#+title: Modus themes for GNU Emacs #+author: Protesilaos Stavrou #+email: info@protesilaos.com #+language: en #+options: ':t toc:nil author:t email:t num:t #+startup: content #+macro: stable-version 1.6.0 #+macro: release-date 2021-09-29 #+macro: development-version 1.7.0-dev #+macro: file @@texinfo:@file{@@$1@@texinfo:}@@ #+macro: space @@texinfo:@: @@ #+macro: kbd @@texinfo:@kbd{@@$1@@texinfo:}@@ #+texinfo_filename: modus-themes.info #+texinfo_dir_category: Emacs misc features #+texinfo_dir_title: Modus Themes: (modus-themes) #+texinfo_dir_desc: Highly accessible themes (WCAG AAA) #+texinfo_header: @set MAINTAINERSITE @uref{https://protesilaos.com,maintainer webpage} #+texinfo_header: @set MAINTAINER Protesilaos Stavrou #+texinfo_header: @set MAINTAINEREMAIL @email{info@protesilaos.com} #+texinfo_header: @set MAINTAINERCONTACT @uref{mailto:info@protesilaos.com,contact the maintainer} #+texinfo: @insertcopying This manual, written by Protesilaos Stavrou, describes the customization options for the ~modus-operandi~ and ~modus-vivendi~ themes, and provides every other piece of information pertinent to them. The documentation furnished herein corresponds to stable version {{{stable-version}}}, released on {{{release-date}}}. Any reference to a newer feature which does not yet form part of the latest tagged commit, is explicitly marked as such. Current development target is {{{development-version}}}. #+toc: headlines 8 insert TOC here, with eight headline levels * COPYING :properties: :copying: t :custom_id: h:b14c3fcb-13dd-4144-9d92-2c58b3ed16d3 :end: Copyright (C) 2020-2021 Free Software Foundation, Inc. #+begin_quote Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.3 or any later version published by the Free Software Foundation; with no Invariant Sections, with the Front-Cover Texts being “A GNU Manual,” and with the Back-Cover Texts as in (a) below. A copy of the license is included in the section entitled “GNU Free Documentation License.” (a) The FSF’s Back-Cover Text is: “You have the freedom to copy and modify this GNU manual.” #+end_quote * Overview :properties: :custom_id: h:f0f3dbcb-602d-40cf-b918-8f929c441baf :end: The Modus themes are designed for accessible readability. They conform with the highest standard for color contrast between any given combination of background and foreground values. This corresponds to the WCAG AAA standard, which specifies a minimum rate of distance in relative luminance of 7:1. Modus Operandi (~modus-operandi~) is a light theme, while Modus Vivendi (~modus-vivendi~) is dark. Each theme's color palette is designed to meet the needs of the numerous interfaces that are possible in the Emacs computing environment. The overarching objective of this project is to always offer accessible color combinations. There shall never be a compromise on this principle. If there arises an inescapable trade-off between readability and stylistic considerations, we will always opt for the former. To ensure that users have a consistently accessible experience, the themes strive to achieve as close to full face coverage as possible ([[#h:a9c8f29d-7f72-4b54-b74b-ddefe15d6a19][Face coverage]]). Furthermore, the themes are designed to empower users with red-green color deficiency (deuteranopia). This is achieved through customization options which have the effect of replacing all relevant instances of green with a variant of blue ([[#h:bf1c82f2-46c7-4eb2-ad00-dd11fdd8b53f][Customization Options]]). Starting with version 0.12.0 and onwards, the themes are built into GNU Emacs. ** How do the themes look like :properties: :custom_id: h:69b92089-069c-4ba1-9d94-cc3415fc4f87 :end: #+cindex: Screenshots Check the web page with [[https://protesilaos.com/modus-themes-pictures/][the screen shots]]. There are lots of scenarios on display that draw attention to details and important aspects in the design of the themes. They also showcase the numerous customization options. [[#h:bf1c82f2-46c7-4eb2-ad00-dd11fdd8b53f][Customization options]]. ** Learn about the latest changes :properties: :custom_id: h:2cc37c36-6c1a-48b2-a010-1050b270ee18 :end: #+cindex: Changelog Please refer to the [[https://protesilaos.com/modus-themes-changelog][web page with the change log]]. It is comprehensive and covers everything that goes into every tagged release of the themes. * Installation :properties: :custom_id: h:1af85373-7f81-4c35-af25-afcef490c111 :end: The Modus themes are distributed with Emacs starting with version 28.1. On older versions of Emacs, they can be installed using Emacs' package manager or manually from their code repository. There also exist packages for distributions of GNU/Linux. ** Install manually from source :properties: :custom_id: h:da3414b7-1426-46b8-8e76-47b845b76fd0 :end: In the following example, we are assuming that your Emacs files are stored in =~/.emacs.d= and that you want to place the Modus themes in =~/.emacs.d/modus-themes=. 1. Get the source and store it in the desired path by running the following in the command line shell: : $ git clone https://gitlab.com/protesilaos/modus-themes.git ~/.emacs.d/modus-themes 2. Add that path to your known Elisp libraries' list, by placing this snippet of Emacs Lisp in your init file (e.g. {{{file(init.el)}}}): #+begin_src emacs-lisp (add-to-list 'load-path "~/.emacs.d/modus-themes") #+end_src The themes are now ready to be used: [[#h:3f3c3728-1b34-437d-9d0c-b110f5b161a9][Enable and load]]. ** Install from the archives :properties: :custom_id: h:c4b10085-149f-43e2-bd4d-347f33aee054 :end: The ~modus-themes~ package is available from the GNU ELPA archive, which is configured by default. Prior to querying any package archive, make sure to have updated the index, with {{{kbd(M-x package-refresh-contents)}}}. Then all you need to do is type {{{kbd(M-x package-install)}}} and specify the ~modus-themes~. Note that older versions of the themes used to be distributed as standalone packages. This practice has been discontinued starting with version 1.0.0 of this project. Once installed, the themes are ready to be used: [[#h:3f3c3728-1b34-437d-9d0c-b110f5b161a9][Enable and load]]. ** Install on GNU/Linux :properties: :custom_id: h:da640eb1-95dd-4e86-bb4e-1027b27885f0 :end: The themes are also available from the archives of some distributions of GNU/Linux. These should correspond to a tagged release rather than building directly from the latest Git commit. It all depends on the distro's packaging policies. *** Debian 11 Bullseye :properties: :custom_id: h:7e570360-9ee6-4bc5-8c04-9dc11418a3e4 :end: The themes are part of Debian 11 Bullseye. Get them with: #+begin_src sh sudo apt install elpa-modus-themes #+end_src They are now ready to be used: [[#h:3f3c3728-1b34-437d-9d0c-b110f5b161a9][Enable and load]]. *** GNU Guix :properties: :custom_id: h:a4ca52cd-869f-46a5-9e16-4d9665f5b88e :end: Users of Guix can get the themes with this command: #+begin_src sh guix package -i emacs-modus-themes #+end_src They are now ready to be used: [[#h:3f3c3728-1b34-437d-9d0c-b110f5b161a9][Enable and load]]. * Enable and load :properties: :custom_id: h:3f3c3728-1b34-437d-9d0c-b110f5b161a9 :end: #+findex: modus-themes-load-themes #+findex: modus-themes-toggle #+findex: modus-themes-load-operandi #+findex: modus-themes-load-vivendi #+cindex: Essential configuration #+vindex: modus-themes-after-load-theme-hook Users of the built-in themes can load and automatically enable the theme of their preference by adding either form to their init file: #+begin_src emacs-lisp (load-theme 'modus-operandi) ; Light theme (load-theme 'modus-vivendi) ; Dark theme #+end_src This is all one needs. Users of packaged variants of the themes must add a few more lines to ensure that everything works as intended. First, one has to require the main library before loading either theme: #+begin_src emacs-lisp (require 'modus-themes) #+end_src Then it is recommended to load the individual theme files with the helper function ~modus-themes-load-themes~: #+begin_src emacs-lisp ;; Load the theme files before enabling a theme (else you get an error). (modus-themes-load-themes) #+end_src Once the libraries that define the themes are enabled, one can activate a theme with either of the following expressions: #+begin_src emacs-lisp (modus-themes-load-operandi) ; Light theme ;; OR (modus-themes-load-vivendi) ; Dark theme #+end_src Changes to the available customization options must always be evaluated before loading a theme ([[#h:bf1c82f2-46c7-4eb2-ad00-dd11fdd8b53f][Customization Options]]). An exception to this norm is when using the various Custom interfaces or with commands like {{{kbd(M-x customize-set-variable)}}}, which automatically reload the theme by default ([[#h:9001527a-4e2c-43e0-98e8-3ef72d770639][Option for inhibiting theme reload]]). This is how a basic setup could look like: #+begin_src emacs-lisp (require 'modus-themes) ;; Your customisations here. For example: (setq modus-themes-bold-constructs t modus-themes-mode-line '3d) ;; Load the theme files before enabling a theme (else you get an error). (modus-themes-load-themes) ;; Enable the theme of your preference: (modus-themes-load-operandi) ;; Optionally add a key binding for the toggle between the themes: (define-key global-map (kbd "") #'modus-themes-toggle) #+end_src [[#h:e979734c-a9e1-4373-9365-0f2cd36107b8][Sample configuration for use-package]]. With those granted, bear in mind a couple of technical points on ~modus-themes-load-operandi~ and ~modus-themes-load-vivendi~, as well as ~modus-themes-toggle~ which relies on them: 1. Those functions call ~load-theme~. Some users prefer to opt for ~enable-theme~ instead ([[#h:e68560b3-7fb0-42bc-a151-e015948f8a35][Differences between loading and enabling]]). 2. The functions will run the ~modus-themes-after-load-theme-hook~ as their final step. This can be employed for bespoke configurations ([[#h:f4651d55-8c07-46aa-b52b-bed1e53463bb][Advanced customization (do-it-yourself)]]). Experienced users may not wish to rely on such a hook and the functions that run it: they may prefer a custom solution ([[#h:86f6906b-f090-46cc-9816-1fe8aeb38776][A theme-agnostic hook for theme loading]]). ** Sample configuration for use-package :properties: :custom_id: h:e979734c-a9e1-4373-9365-0f2cd36107b8 :end: #+cindex: use-package configuration It is common for Emacs users to rely on ~use-package~ for declaring package configurations in their setup. We use this as an example: #+begin_src emacs-lisp (use-package modus-themes :ensure ; omit this to use the built-in themes :init ;; Add all your customizations prior to loading the themes (setq modus-themes-italic-constructs t modus-themes-bold-constructs nil modus-themes-region '(bg-only no-extend)) ;; Load the theme files before enabling a theme (else you get an error). (modus-themes-load-themes) :config ;; Load the theme of your choice: (modus-themes-load-operandi) ;; OR (modus-themes-load-vivendi) :bind ("" . modus-themes-toggle)) #+end_src [[#h:e68560b3-7fb0-42bc-a151-e015948f8a35][Differences between loading and enabling]]. Note: make sure not to customize the variable ~custom-theme-load-path~ or ~custom-theme-directory~ after the themes' package declaration. That will lead to failures in loading the files. If either or both of those variables need to be changed, their values should be defined before the package declaration of the themes. ** Differences between loading and enabling :properties: :custom_id: h:e68560b3-7fb0-42bc-a151-e015948f8a35 :end: #+cindex: load-theme VS enable-theme The reason we recommend ~load-theme~ instead of the other option of ~enable-theme~ is that the former does a kind of "reset" on the face specs. It quite literally loads (or re-loads) the theme. Whereas the latter simply puts an already loaded theme at the top of the list of enabled items, re-using whatever state was last loaded. As such, ~load-theme~ reads all customizations that may happen during any given Emacs session: even after the initial setup of a theme. Examples are calls to ~custom-set-faces~, as well as new values assigned to the options the Modus themes provide ([[#h:bf1c82f2-46c7-4eb2-ad00-dd11fdd8b53f][Customization Options]]). Our tests show that ~enable-theme~ does not read such variables anew, so it might appear to the unsuspecting user that the themes are somehow broken whenever they try to assign a new value to a customization option or some face. This "reset" that ~load-theme~ conducts does, however, come at the cost of being somewhat slower than ~enable-theme~. Users who have a stable setup and who seldom update their variables during a given Emacs session, are better off using something like this: #+begin_src emacs-lisp (require 'modus-themes) (load-theme 'modus-operandi t t) (load-theme 'modus-vivendi t t) (enable-theme 'modus-operandi) ;; OR (enable-theme 'modus-vivendi) #+end_src [[#h:e979734c-a9e1-4373-9365-0f2cd36107b8][Sample configuration for use-package]]. With the above granted, other sections of the manual discuss how to configure custom faces, where ~load-theme~ is expected, though ~enable-theme~ could still apply in stable setups: [[#h:1487c631-f4fe-490d-8d58-d72ffa3bd474][Case-by-case face specs using the themes' palette]]. [[#h:51ba3547-b8c8-40d6-ba5a-4586477fd4ae][Face specs at scale using the themes' palette]]. * Customization Options :properties: :custom_id: h:bf1c82f2-46c7-4eb2-ad00-dd11fdd8b53f :end: The Modus themes are highly configurable, though they should work well without any further tweaks. By default, all customization options are set to nil, unless otherwise noted in this manual. Remember that all customization options must be evaluated before loading a theme ([[#h:3f3c3728-1b34-437d-9d0c-b110f5b161a9][Enable and load]]). Below is a summary of what you will learn in the subsequent sections of this manual. #+begin_src emacs-lisp (setq modus-themes-italic-constructs t modus-themes-bold-constructs nil modus-themes-no-mixed-fonts nil modus-themes-subtle-line-numbers nil modus-themes-success-deuteranopia t modus-themes-tabs-accented t modus-themes-inhibit-reload t ; only applies to `customize-set-variable' and related modus-themes-fringes nil ; {nil,'subtle,'intense} ;; Options for `modus-themes-lang-checkers' are either nil (the ;; default), or a list of properties that may include any of those ;; symbols: `straight-underline', `text-also', `background', ;; `intense' modus-themes-lang-checkers nil ;; Options for `modus-themes-mode-line' are either nil, or a list ;; that can combine any of `3d' OR `moody', `borderless', ;; `accented', `padded'. modus-themes-mode-line '(padded accented borderless) ;; Options for `modus-themes-syntax' are either nil (the default), ;; or a list of properties that may include any of those symbols: ;; `faint', `yellow-comments', `green-strings', `alt-syntax' modus-themes-syntax nil ;; Options for `modus-themes-hl-line' are either nil (the default), ;; or a list of properties that may include any of those symbols: ;; `accented', `underline', `intense' modus-themes-hl-line '(underline accented) ;; Options for `modus-themes-paren-match' are either nil (the ;; default), or a list of properties that may include any of those ;; symbols: `bold', `intense', `underline' modus-themes-paren-match '(bold intense) ;; Options for `modus-themes-links' are either nil (the default), ;; or a list of properties that may include any of those symbols: ;; `neutral-underline' OR `no-underline', `faint' OR `no-color', ;; `bold', `italic', `background' modus-themes-links '(neutral-underline background) ;; Options for `modus-themes-prompts' are either nil (the ;; default), or a list of properties that may include any of those ;; symbols: `background', `bold', `gray', `intense', `italic' modus-themes-prompts '(intense bold) modus-themes-completions 'moderate ; {nil,'moderate,'opinionated} modus-themes-mail-citations nil ; {nil,'faint,'monochrome} ;; Options for `modus-themes-region' are either nil (the default), ;; or a list of properties that may include any of those symbols: ;; `no-extend', `bg-only', `accented' modus-themes-region '(bg-only no-extend) ;; Options for `modus-themes-diffs': nil, 'desaturated, ;; 'bg-only, 'deuteranopia, 'fg-only-deuteranopia modus-themes-diffs 'fg-only-deuteranopia modus-themes-org-blocks 'gray-background ; {nil,'gray-background,'tinted-background} modus-themes-org-agenda ; this is an alist: read the manual or its doc string '((header-block . (variable-pitch scale-title)) (header-date . (grayscale workaholic bold-today)) (event . (accented scale-small)) (scheduled . uniform) (habit . traffic-light-deuteranopia)) modus-themes-headings ; this is an alist: read the manual or its doc string '((1 . (overline background)) (2 . (rainbow overline)) (t . (no-bold))) modus-themes-variable-pitch-ui nil modus-themes-variable-pitch-headings t modus-themes-scale-headings t modus-themes-scale-1 1.1 modus-themes-scale-2 1.15 modus-themes-scale-3 1.21 modus-themes-scale-4 1.27 modus-themes-scale-title 1.33) #+end_src ** Option for inhibiting theme reload :properties: :alt_title: Custom reload theme :description: Toggle auto-reload of the theme when setting custom variables :custom_id: h:9001527a-4e2c-43e0-98e8-3ef72d770639 :end: #+vindex: modus-themes-inhibit-reload Symbol: ~modus-themes-inhibit-reload~ Possible values: 1. ~nil~ 2. ~t~ (default) By default, customizing a theme-related user option through the Custom interfaces or with {{{kbd(M-x customize-set-variable)}}} will not reload the currently active Modus theme. Enable this behaviour by setting this variable to ~nil~. ** Option for color-coding success state (deuteranopia) :properties: :alt_title: Success' color-code :description: Toggle blue color for success or done states :custom_id: h:3ed03a48-20d8-4ce7-b214-0eb7e4c79abe :end: #+vindex: modus-themes-success-deuteranopia Symbol: ~modus-themes-success-deuteranopia~ Possible values: 1. ~nil~ (default) 2. ~t~ The default is to colorise all faces that denote "success", "done", or similar with a variant of green. With a non-nil value (~t~), use variants of blue instead of green. This is meant to empower users with red-green color deficiency. The present customization option should apply to all contexts where there can be a color-coded distinction between success and failure, to-do and done, and so on. Diffs, which have a red/green dichotomy by default, can also be configured to conform with deuteranopia. [[#h:ea7ac54f-5827-49bd-b09f-62424b3b6427][Option for diff buffer looks]]. ** Option for more bold constructs :properties: :alt_title: Bold constructs :description: Toggle bold constructs in code :custom_id: h:b25714f6-0fbe-41f6-89b5-6912d304091e :end: #+vindex: modus-themes-bold-constructs Symbol: ~modus-themes-bold-constructs~ Possible values: 1. ~nil~ (default) 2. ~t~ The default is to use a bold typographic weight only when it is required. With a non-nil value (~t~) display several syntactic constructs in bold weight. This concerns keywords and other important aspects of code syntax. It also affects certain mode line indicators and command-line prompts. Advanced users may also want to configure the exact attributes of the ~bold~ face. [[#h:2793a224-2109-4f61-a106-721c57c01375][Configure bold and italic faces]]. ** Option for more italic constructs :properties: :alt_title: Italic constructs :description: Toggle italic font constructs in code :custom_id: h:977c900d-0d6d-4dbb-82d9-c2aae69543d6 :end: #+vindex: modus-themes-italic-constructs Symbol: ~modus-themes-italic-constructs~ Possible values: 1. ~nil~ (default) 2. ~t~ The default is to not use slanted text forms (italics) unless it is absolutely necessary. With a non-nil value (~t~) choose to render more faces in italics. This typically affects documentation strings and code comments. Advanced users may also want to configure the exact attributes of the ~italic~ face. [[#h:2793a224-2109-4f61-a106-721c57c01375][Configure bold and italic faces]]. ** Option for syntax highlighting :properties: :alt_title: Syntax styles :description: Choose the overall aesthetic of code syntax :custom_id: h:c119d7b2-fcd4-4e44-890e-5e25733d5e52 :end: #+vindex: modus-themes-syntax Symbol: ~modus-themes-syntax~ Possible values are expressed as a list of properties (default is ~nil~ or an empty list). The list can include any of the following symbols: + ~faint~ + ~yellow-comments~ + ~green-strings~ + ~alt-syntax~ The default (a ~nil~ value or an empty list) is to use a balanced combination of colors on the cyan-blue-magenta side of the spectrum. There is little to no use of greens, yellows, and reds. Comments are gray, strings are blue colored, doc strings are a shade of cyan, while color combinations are designed to avoid exaggerations. The property ~faint~ fades the saturation of all applicable colors, where that is possible or appropriate. The property ~yellow-comments~ applies a yellow color to comments. The property ~green-strings~ applies a green color to strings and a green tint to doc strings. The property ~alt-syntax~ changes the combination of colors beyond strings and comments, so that the effective palette is broadened to provide greater variety relative to the default. Combinations of any of those properties are expressed as a list, like in these examples: #+begin_src emacs-lisp (faint) (green-strings yellow-comments) (alt-syntax green-strings yellow-comments) (faint alt-syntax green-strings yellow-comments) #+end_src The order in which the properties are set is not significant. In user configuration files the form may look like this: #+begin_src emacs-lisp (setq modus-themes-syntax '(faint alt-syntax)) #+end_src Independent of this variable, users may also control the use of a bold weight or italic text: ~modus-themes-bold-constructs~ and ~modus-themes-italic-constructs~. [[#h:b25714f6-0fbe-41f6-89b5-6912d304091e][Option for more bold constructs]]. [[#h:977c900d-0d6d-4dbb-82d9-c2aae69543d6][Option for more italic constructs]]. ** Option for no font mixing :properties: :alt_title: No mixed fonts :description: Toggle mixing of font families :custom_id: h:115e6c23-ee35-4a16-8cef-e2fcbb08e28b :end: #+vindex: modus-themes-no-mixed-fonts Symbol: ~modus-themes-no-mixed-fonts~ Possible values: 1. ~nil~ (default) 2. ~t~ By default, the themes configure some spacing-sensitive faces like Org tables and code blocks to always inherit from the ~fixed-pitch~ face. This is to ensure that those constructs remain monospaced even when users opt for a mode that remaps typeface families, such as the built-in {{{kbd(M-x variable-pitch-mode)}}}. Otherwise the layout would appear broken, due to how spacing is done. To disable this behaviour, set the option to ~t~. Users may prefer to use another package for handling mixed typeface configurations, rather than letting the theme do it, perhaps because a purpose-specific package has extra functionality. Two possible options are ~org-variable-pitch~ and ~mixed-pitch~. [[#h:defcf4fc-8fa8-4c29-b12e-7119582cc929][Font configurations for Org and others]]. ** Option for links :properties: :alt_title: Link styles :description: Choose among several styles, with or without underline :custom_id: h:c119d7b2-fcd4-4e44-890e-5e25733d5e52 :end: #+vindex: modus-themes-links Symbol: ~modus-themes-links~ Possible values are expressed as a list of properties (default is ~nil~ or an empty list). The list can include any of the following symbols: + Underline style: - ~neutral-underline~ - ~no-underline~ + Text coloration: - ~faint~ - ~no-color~ + ~bold~ + ~italic~ + ~background~ The default (a ~nil~ value or an empty list) is a prominent text color, typically blue, with an underline of the same color. For the style of the underline, a ~neutral-underline~ property turns the color of the line into a subtle gray, while the ~no-underline~ property removes the line altogether. If both of those are set, the latter takes precedence. For text coloration, a ~faint~ property desaturates the color of the text and the underline, unless the underline is affected by the aforementioned properties. While a ~no-color~ property removes the color from the text. If both of those are set, the latter takes precedence. A ~bold~ property applies a heavy typographic weight to the text of the link. An ~italic~ property adds a slant to the link's text (italic or oblique forms, depending on the typeface). A ~background~ property applies a subtle tinted background color. In case both ~no-underline~ and ~no-color~ are set, then a subtle gray background is applied to all links. This can still be combined with the ~bold~ and ~italic~ properties. Combinations of any of those properties are expressed as a list, like in these examples: #+begin_src emacs-lisp (faint) (no-underline faint) (no-color no-underline bold) (italic bold background no-color no-underline) #+end_src The order in which the properties are set is not significant. In user configuration files the form may look like this: #+begin_src emacs-lisp (setq modus-themes-links '(neutral-underline background)) #+end_src The placement of the underline, meaning its proximity to the text, is controlled by ~x-use-underline-position-properties~, ~x-underline-at-descent-line~, ~underline-minimum-offset~. Please refer to their documentation strings. ** Option for command prompt styles :properties: :alt_title: Command prompts :description: Choose among plain, subtle, or intense prompts :custom_id: h:db5a9a7c-2928-4a28-b0f0-6f2b9bd52ba1 :end: #+vindex: modus-themes-prompts Symbol: ~modus-themes-prompts~ Possible values are expressed as a list of properties (default is ~nil~ or an empty list). The list can include any of the following symbols: + ~background~ + ~bold~ + ~gray~ + ~intense~ + ~italic~ The default (a ~nil~ value or an empty list) means to only use a subtle accented foreground color. The property ~background~ applies a background color to the prompt's text. By default, this is a subtle accented value. The property ~intense~ makes the foreground color more prominent. If the ~background~ property is also set, it amplifies the value of the background as well. The property ~gray~ changes the prompt's colors to grayscale. This affects the foreground and, if the ~background~ property is also set, the background. Its effect is subtle, unless it is combined with the ~intense~ property. The property ~bold~ makes the text use a bold typographic weight. Similarly, ~italic~ adds a slant to the font's forms (italic or oblique forms, depending on the typeface). Combinations of any of those properties are expressed as a list, like in these examples: #+begin_src emacs-lisp (intense) (bold intense) (intense bold gray) (intense background gray bold) #+end_src The order in which the properties are set is not significant. In user configuration files the form may look like this: #+begin_src emacs-lisp (setq modus-themes-prompts '(background gray)) #+end_src ** Option for mode line presentation :properties: :alt_title: Mode line :description: Choose among several styles, with or without borders :custom_id: h:27943af6-d950-42d0-bc23-106e43f50a24 :end: #+vindex: modus-themes-mode-line Symbol: ~modus-themes-mode-line~ Possible values, which can be expressed as a list of combinations of box effect, color, and border visibility: + Overall style: - ~3d~ - ~moody~ + ~accented~ + ~borderless~ + ~padded~ The default (a nil value or an empty list) is a two-dimensional rectangle with a border around it. The active and the inactive mode lines use different shades of grayscale values for the background, foreground, border. The ~3d~ property applies a three-dimensional effect to the active mode line. The inactive mode lines remain two-dimensional and are toned down a bit, relative to the default style. The ~moody~ property optimizes the mode line for use with the library of the same name (hereinafter referred to as 'Moody'). In practice, it removes the box effect and replaces it with underline and overline properties. It also tones down the inactive mode lines. Despite its intended purpose, this option can also be used without the Moody library (please consult the themes' manual on this point for more details). If both ~3d~ and ~moody~ properties are set, the latter takes precedence. The ~borderless~ property removes the color of the borders. It does not actually remove the borders, but only makes their color the same as the background, effectively creating some padding. The ~accented~ property ensures that the active mode line uses a colored background instead of the standard shade of gray. The ~padded~ property increases the apparent height of the mode line. This is done by applying box effects and combining them with an underline and overline. To ensure that the underline is placed at the bottom, set ~x-underline-at-descent-line~ to non-nil. The ~padded~ property has no effect when the ~moody~ property is also used, because Moody already applies its own padding. Combinations of any of those properties are expressed as a list, like in these examples: #+begin_src emacs-lisp (accented) (borderless 3d) (moody accented borderless) #+end_src The order in which the properties are set is not significant. In user configuration files the form may look like this: #+begin_src emacs-lisp (setq modus-themes-mode-line '(borderless accented)) #+end_src Note that Moody does not expose any faces that the themes could style directly. Instead it re-purposes existing ones to render its tabs and ribbons. As such, there may be cases where the contrast ratio falls below the 7:1 target that the themes conform with (WCAG AAA). To hedge against this, we configure a fallback foreground for the ~moody~ property, which will come into effect when the background of the mode line changes to something less accessible, such as Moody ribbons (read the doc string of ~set-face-attribute~, specifically ~:distant-foreground~). This fallback is activated when Emacs determines that the background and foreground of the given construct are too close to each other in terms of color distance. In practice, users will need to experiment with the variable ~face-near-same-color-threshold~ to trigger the effect. We find that a value of =45000= shall suffice, contrary to the default =30000=. Though for the combinations that involve the ~accented~ and ~moody~ properties, as mentioned above, that should be raised up to =70000=. Do not set it too high, because it has the adverse effect of always overriding the default colors (which have been carefully designed to be highly accessible). Furthermore, because Moody expects an underline and overline instead of a box style, it is advised to set ~x-underline-at-descent-line~ to a non-nil value. ** Option for accented background in tab interfaces :properties: :alt_title: Tab style :description: Toggle accented background for tabs :custom_id: h:27cef8f5-dc4e-4c93-ba41-b899e650d936 :end: #+vindex: modus-themes-tabs-accented Symbol: ~modus-themes-tabs-accented~ Possible values: + ~nil~ (default) + ~t~ By default, all tab interfaces use backgrounds which are shades of gray. When this option is set to non-nil, the backgrounds become colorful. This affects the built-in ~tab-bar-mode~ and ~tab-line-mode~, as well as the Centaur tabs package. ** Option for completion framework aesthetics :properties: :alt_title: Completion UIs :description: Choose among standard, moderate, or opinionated looks :custom_id: h:f1c20c02-7b34-4c35-9c65-99170efb2882 :end: #+vindex: modus-themes-completions Symbol: ~modus-themes-completions~ Possible values: 1. ~nil~ (default) 2. ~moderate~ 3. ~opinionated~ This is a special option that has different effects depending on the completion UI. The interfaces can be grouped in two categories, based on their default aesthetics: (i) those that only or mostly use foreground colors for their interaction model, and (ii) those that combine background and foreground values for some of their metaphors. The former category encompasses Icomplete, Ido, Selectrum, Vertico, as well as pattern matching styles like Orderless and Flx. The latter covers Helm, Ivy, and Sallet. A value of ~nil~ (the default) will simply respect the metaphors of each completion framework. Option ~moderate~ applies a combination of background and foreground that is fairly subtle. For Icomplete and friends this constitutes a departure from their default aesthetics, however the difference is small. While Helm, Ivy et al appear slightly different than their original looks, as they are toned down a bit. Option ~opinionated~ uses color combinations that refashion the completion UI. For the Icomplete camp this means that intense background and foreground combinations are used: in effect their looks emulate those of Helm, Ivy and co. in their original style. Whereas the other group of packages will revert to an even more nuanced aesthetic with some additional changes to the choice of hues. To appreciate the scope of this customization option, you should spend some time with every one of the ~nil~ (default), ~moderate~, and ~opinionated~ possibilities. ** Option for mail citations :properties: :alt_title: Mail citations :description: Choose among colorful, desaturated, monochrome citations :custom_id: h:5a12765d-0ba0-4a75-ab11-e35d3bbb317d :end: #+vindex: modus-themes-mail-citations Symbol: ~modus-themes-mail-citations~ Possible values: 1. ~nil~ (default) 2. ~faint~ 3. ~monochrome~ By default, citations in email-related buffers apply contrasting hues to different levels of depth in cited text. The colors are fairly easy to tell apart. A value of ~faint~ makes all citation levels less intense, while retaining the default style of contrasting hues (albeit very subtle ones). Option ~monochrome~ turns all citations in to a uniform shade of gray. Whatever the value assigned to this variable, citations in emails are controlled by typographic elements or indentation, which the themes do not touch. ** Option for fringe visibility :properties: :alt_title: Fringes :description: Choose among invisible, subtle, or intense fringe styles :custom_id: h:1983c3fc-74f6-44f3-b917-967c403bebae :end: #+vindex: modus-themes-fringes Symbol: ~modus-themes-fringes~ Possible values: 1. ~nil~ (default) 2. ~subtle~ 3. ~intense~ The default is to use the same color as that of the main background, meaning that the fringes are not obvious though they still occupy the space given to them by ~fringe-mode~. Options ~subtle~ and ~intense~ apply a gray background, making the fringes visible. The difference between the two is one of degree, as their names imply. ** Option for language checkers :properties: :alt_title: Language checkers :description: Control the style of language checkers/linters :custom_id: h:4b13743a-8ebf-4d2c-a043-cceba10b1eb4 :end: #+vindex: modus-themes-lang-checkers Symbol: ~modus-themes-lang-checkers~ Possible values are expressed as a list of properties (default is ~nil~ or an empty list). The list can include any of the following symbols: + ~straight-underline~ + ~text-also~ + ~background~ + ~intense~ The default (a ~nil~ value or an empty list) applies a color-coded underline to the affected text, while it leaves the original foreground intact. If the display spec of Emacs has support for it, the underline's style is that of a wave, otherwise it is a straight line. The property ~straight-underline~ ensures that the underline under the affected text is always drawn as a straight line. The property ~text-also~ applies the same color of the underline to the affected text. The property ~background~ adds a color-coded background. The property ~intense~ amplifies the applicable colors if ~background~ and/or ~text-only~ are set. If ~intense~ is set on its own, then it implies ~text-only~. To disable fringe indicators for Flymake or Flycheck, refer to variables ~flymake-fringe-indicator-position~ and ~flycheck-indication-mode~, respectively. Combinations of any of those properties can be expressed in a list, as in those examples: #+begin_src emacs-lisp (background) (straight-underline intense) (background text-also straight-underline) #+end_src The order in which the properties are set is not significant. In user configuration files the form may look like this: #+begin_src emacs-lisp (setq modus-themes-lang-checkers '(text-also background)) #+end_src NOTE: The placement of the straight underline, though not the wave style, is controlled by the built-in variables ~underline-minimum-offset~, ~x-underline-at-descent-line~, ~x-use-underline-position-properties~. ** Option for line highlighting (hl-line-mode) :properties: :alt_title: Line highlighting :description: Choose style of current line (hl-line-mode) :custom_id: h:1dba1cfe-d079-4c13-a810-f768e8789177 :end: #+vindex: modus-themes-hl-line Symbol: ~modus-themes-hl-line~ Possible values are expressed as a list of properties (default is ~nil~ or an empty list). The list can include any of the following symbols: + ~accented~ + ~intense~ + ~underline~ The default (a ~nil~ value or an empty list) is a subtle gray background color. The property ~accented~ changes the background to a colored variant. An ~underline~ property draws a line below the highlighted area. Its color is similar to the background, so gray by default or an accent color when ~accented~ is also set. An ~intense~ property amplifies the colors in use, which may be both the background and the underline. Combinations of any of those properties are expressed as a list, like in these examples: #+begin_src emacs-lisp (intense) (underline intense) (accented intense underline) #+end_src The order in which the properties are set is not significant. In user configuration files the form may look like this: #+begin_src emacs-lisp (setq modus-themes-hl-line '(underline accented)) #+end_src Set ~x-underline-at-descent-line~ to a non-nil value for better results with underlines. This style affects several packages that enable ~hl-line-mode~, such as =elfeed=, =notmuch=, and =mu4e=. ** Option for line numbers (display-line-numbers-mode) :properties: :alt_title: Line numbers :description: Toggle subtle style for line numbers :custom_id: h:8c4a6230-2e43-4aa2-a631-3b7179392e09 :end: #+vindex: modus-themes-subtle-line-numbers Symbol: ~modus-themes-subtle-line-numbers~ Possible value: 1. ~nil~ (default) 2. ~t~ The default style for ~display-line-numbers-mode~ and its global variant is to apply a subtle gray background to the line numbers. The current line has a more pronounced background and foreground combination to bring more attention to itself. Similarly, the faces for ~display-line-numbers-major-tick~ and its counterpart ~display-line-numbers-minor-tick~ use appropriate styles that involve a bespoke background and foreground combination. With a non-nil value (~t~), line numbers have no background of their own. Instead they retain the primary background of the theme, blending with the rest of the buffer. Foreground values for all relevant faces are updated to accommodate this aesthetic. ** Option for parenthesis matching (show-paren-mode) :properties: :alt_title: Matching parentheses :description: Choose between various styles for matching delimiters/parentheses :custom_id: h:e66a7e4d-a512-4bc7-9f86-fbbb5923bf37 :end: #+vindex: modus-themes-paren-match Symbol: ~modus-themes-paren-match~ Possible values are expressed as a list of properties (default is ~nil~ or an empty list). The list can include any of the following symbols: + ~bold~ + ~intense~ + ~underline~ The default (a ~nil~ value or an empty list) is a subtle background color. The ~bold~ property adds a bold weight to the characters of the matching delimiters. The ~intense~ property applies a more prominent background color to the delimiters. The ~underline~ property draws a straight line under the affected text. Combinations of any of those properties are expressed as a list, like in these examples: #+begin_src emacs-lisp (bold) (underline intense) (bold intense underline) #+end_src The order in which the properties are set is not significant. In user configuration files the form may look like this: #+begin_src emacs-lisp (setq modus-themes-paren-match '(bold intense)) #+end_src This customization variable affects the built-in ~show-paren-mode~ and the =smartparens= package. ** Option for active region :properties: :alt_title: Active region :description: Choose between various styles for the active region :custom_id: h:60798063-b4ad-45ea-b9a7-ff7b5c0ab74c :end: #+vindex: modus-themes-region Symbol: ~modus-themes-region~ Possible values are expressed as a list of properties (default is ~nil~ or an empty list). The list can include any of the following symbols: + ~no-extend~ + ~bg-only~ + ~accented~ The default (a ~nil~ value or an empty list) is a prominent gray background that overrides all foreground colors in the area it encompasses. Its reach extends to the edge of the window. The ~no-extend~ property limits the region to the end of the line, so that it does not reach the edge of the window. The ~bg-only~ property makes the region's background color more subtle to allow the underlying text to retain its foreground colors. The ~accented~ property applies a more colorful background to the region. Combinations of any of those properties are expressed as a list, like in these examples: #+begin_src emacs-lisp (no-extend) (bg-only accented) (accented bg-only no-extend) #+end_src The order in which the properties are set is not significant. In user configuration files the form may look like this: #+begin_src emacs-lisp (setq modus-themes-region '(bg-only no-extend)) #+end_src ** Option for diff buffer looks :properties: :alt_title: Diffs :description: Choose among intense, desaturated, or text-only diffs :custom_id: h:ea7ac54f-5827-49bd-b09f-62424b3b6427 :end: #+vindex: modus-themes-diffs Symbol: ~modus-themes-diffs~ Possible values: 1. ~nil~ (default) 2. ~desaturated~ 3. ~bg-only~ 4. ~deuteranopia~ 5. ~fg-only-deuteranopia~ The default (~nil~) uses fairly intense color combinations for diffs, by applying prominently colored backgrounds, with appropriate foregrounds. Option ~desaturated~ follows the same principles as with the default (~nil~), though it tones down all relevant colors. Option ~bg-only~ applies a background but does not override the text's foreground. This makes it suitable for a non-nil value passed to ~diff-font-lock-syntax~ (note: Magit does not support syntax highlighting in diffs---last checked on 2021-04-21). Option ~deuteranopia~ is like the default (~nil~) in terms of using prominently colored backgrounds, except that it also accounts for red-green color defficiency by replacing all instances of green with colors on the blue side of the spectrum. Other stylistic changes are made in the interest of optimizing for such a use-case. Option ~fg-only-deuteranopia~ removes all colored backgrounds, except from word-wise or refined changes. Instead, it only uses color-coded foreground values to differentiate between added, removed, and changed lines. If a background is necessary to denote context, a subtle grayscale value is applied. The color used for added lines is a variant of blue to account for red-green color defficiency but also because green text alone is hard to discern in the diff's context (hard for our accessibility purposes). The ~fg-only~ option that existed in older versions of the themes is now an alias of ~fg-only-deuteranopia~, in the interest of backward compatibility. ** Option for org-mode block styles :properties: :alt_title: Org mode blocks :description: Choose among plain, gray, or tinted backgrounds :custom_id: h:b7e328c0-3034-4db7-9cdf-d5ba12081ca2 :end: #+vindex: modus-themes-org-blocks Symbol: ~modus-themes-org-blocks~ Possible values: 1. ~nil~ (default) 2. ~gray-background~ (value ~grayscale~ exists for backward compatibility) 3. ~tinted-background~ (value ~rainbow~ exists for backward compatibility) The default means that the block has no distinct background of its own and uses the one that applies to the rest of the buffer. Option ~gray-background~ applies a subtle gray background to the block's contents. It also affects the begin and end lines of the block: their background extends to the edge of the window for Emacs version >= 27 where the ~:extend~ keyword is recognized by ~set-face-attribute~ (this is contingent on the variable ~org-fontify-whole-block-delimiter-line~). Option ~tinted-background~ uses a slightly colored background for the contents of the block. The exact color will depend on the programming language and is controlled by the variable ~org-src-block-faces~ (refer to the theme's source code for the current association list). For this to take effect, Org must be restarted with {{{kbd(M-x org-mode-restart)}}}. Code blocks use their major mode's colors only when the variable ~org-src-fontify-natively~ is non-nil. While quote/verse blocks require setting ~org-fontify-quote-and-verse-blocks~ to a non-nil value. [[#h:f44cc6e3-b0f1-4a5e-8a90-9e48fa557b50][Update Org block delimiter fontification]]. Older versions of the themes provided options ~grayscale~ (or ~greyscale~) and ~rainbow~. Those will continue to work as they are aliases for ~gray-background~ and ~tinted-background~, respectively. ** Option for Org agenda constructs :properties: :alt_title: Org agenda :description: Control each element in the presentation of the agenda :custom_id: h:68f481bc-5904-4725-a3e6-d7ecfa7c3dbc :end: #+vindex: modus-themes-org-agenda Symbol: ~modus-themes-org-agenda~ This is an alist that accepts a =(key . value)= combination. Some values are specified as a list. Here is a sample, followed by a description of all possible combinations: #+begin_src emacs-lisp (setq modus-themes-org-agenda '((header-block . (variable-pitch scale-title)) (header-date . (grayscale workaholic bold-today)) (event . (accented scale-small)) (scheduled . uniform) (habit . traffic-light))) #+end_src A ~header-block~ key applies to elements that concern the headings which demarcate blocks in the structure of the agenda. By default (a ~nil~ value) those are rendered in a bold typographic weight, plus a height that is slightly taller than the default font size. Acceptable values come in the form of a list that can include either or both of those properties: - ~variable-pitch~ to use a proportionately spaced typeface; - ~scale-title~ to increase the size to the number assigned to ~modus-themes-scale-title~ ([[#h:6868baa1-beba-45ed-baa5-5fd68322ccb3][Control the scale of headings]]) or ~no-scale~ to make the font use the same height as the rest of the buffer. In case both ~scale-title~ and ~no-scale~ are in the list, the latter takes precedence. Example usage: #+begin_src emacs-lisp (header-block . nil) (header-block . (scale-title)) (header-block . (no-scale)) (header-block . (variable-pitch scale-title)) #+end_src A ~header-date~ key covers date headings. Dates use only a foreground color by default (a ~nil~ value), with weekdays and weekends having a slight difference in hueness. The current date has an added gray background. This key accepts a list of values that can include any of the following properties: - ~grayscale~ to make weekdays use the main foreground color and weekends a more subtle gray; - ~workaholic~ to make weekdays and weekends look the same in terms of color; - ~bold-today~ to apply a bold typographic weight to the current date; - ~bold-all~ to render all date headings in a bold weight. - ~scale-heading~ increases the height of the date headings to the value of ~modus-themes-scale-1~ (which is the first step in the scale for regular headings). - ~underline-today~ applies an underline to the current date while removing the background it has by default. For example: #+begin_src emacs-lisp (header-date . nil) (header-date . (workaholic)) (header-date . (grayscale bold-all)) (header-date . (grayscale workaholic)) (header-date . (grayscale workaholic bold-today)) (header-date . (grayscale workaholic bold-today scale-heading)) #+end_src An ~event~ key covers events from the diary and other entries that derive from a symbolic expression or sexp (e.g. phases of the moon, holidays). This key accepts a list of values. By default (a nil value or an empty list) those have a gray foreground, while sexp events are additionally presented using slanted text (italics). The properties that can form a list of possible values are: - ~scale-small~ reduces the height of the entries to the value of the user option ~modus-themes-scale-small~ (0.9 the height of the main font size by default). - ~accented~ applies an accent value to the event's foreground, replacing the original gray. - ~italic~ adds a slant to the font's forms (italic or oblique forms, depending on the typeface). For example: #+begin_src emacs-lisp (event . nil) (event . (scale-small)) (event . (scale-small accented)) (event . (scale-small accented italic)) #+end_src A ~scheduled~ key applies to tasks with a scheduled date. By default (a ~nil~ value), those use varying shades of yellow to denote (i) a past or current date and (ii) a future date. Valid values are symbols: - nil (default); - ~uniform~ to make all scheduled dates the same color; - ~rainbow~ to use contrasting colors for past, present, future scheduled dates. For example: #+begin_src emacs-lisp (scheduled . nil) (scheduled . uniform) (scheduled . rainbow) #+end_src A ~habit~ key applies to the ~org-habit~ graph. All possible value are passed as a symbol. Those are: - The default (~nil~) is meant to conform with the original aesthetic of ~org-habit~. It employs all four color codes that correspond to the org-habit states---clear, ready, alert, and overdue---while distinguishing between their present and future variants. This results in a total of eight colors in use: red, yellow, green, blue, in tinted and shaded versions. They cover the full set of information provided by the ~org-habit~ consistency graph. - ~simplified~ is like the default except that it removes the dichotomy between current and future variants by applying uniform color-coded values. It applies a total of four colors: red, yellow, green, blue. They produce a simplified consistency graph that is more legible (or less busy) than the default. The intent is to shift focus towards the distinction between the four states of a habit task, rather than each state's present/future outlook. - ~traffic-light~ further reduces the available colors to red, yellow, and green. As in ~simplified~, present and future variants appear uniformly, but differently from it, the ~clear~ state is rendered in a green hue, instead of the original blue. This is meant to capture the use-case where a habit task being too early is less important than it being too late. The difference between ready and clear states is attenuated by painting both of them using shades of green. This option thus highlights the alert and overdue states. - ~traffic-light-deuteranopia~ is like the ~traffic-light~ except its three colors are red, yellow, and blue to be suitable for users with red-green color deficiency (deuteranopia). For example: #+begin_src emacs-lisp (habit . nil) (habit . simplified) (habit . traffic-light) #+end_src Putting it all together, the alist can look like this: #+begin_src emacs-lisp '((header-block . (scale-title variable-pitch)) (header-date . (grayscale workaholic bold-today)) (event . (accented scale-small)) (scheduled . uniform) (habit . traffic-light)) ;; Or else: (setq modus-themes-org-agenda '((header-block . (scale-title variable-pitch)) (header-date . (grayscale workaholic bold-today)) (event . (accented scale-small)) (scheduled . uniform) (habit . traffic-light))) #+end_src ** Option for the headings' overall style :properties: :alt_title: Heading styles :description: Choose among several styles, also per heading level :custom_id: h:271eff19-97aa-4090-9415-a6463c2f9ae1 :end: #+vindex: modus-themes-headings Symbol: ~modus-themes-headings~ This is an alist that accepts a =(key . list-of-values)= combination. The key is either a number, representing the heading's level or ~t~, which pertains to the fallback style. The list of values covers symbols that refer to properties, as described below. Here is a sample, followed by a presentation of all available properties: #+begin_src emacs-lisp (setq modus-themes-headings '((1 . (background overline)) (2 . (overline rainbow)) (t . (monochrome)))) #+end_src Properties: + ~rainbow~ + ~overline~ + ~background~ + ~no-bold~ + ~monochrome~ By default (a ~nil~ value for this variable), all headings have a bold typographic weight and use a desaturated text color. A ~rainbow~ property makes the text color more saturated. An ~overline~ property draws a line above the area of the heading. A ~background~ property adds a subtle tinted color to the background of the heading. A ~no-bold~ property removes the bold weight from the heading's text. A ~monochrome~ property makes all headings the same base color, which is that of the default for the active theme (black/white). When ~background~ is also set, ~monochrome~ changes its color to gray. If both ~monochrome~ and ~rainbow~ are set, the former takes precedence. Combinations of any of those properties are expressed as a list, like in these examples: #+begin_src emacs-lisp (no-bold) (rainbow background) (overline monochrome no-bold) #+end_src The order in which the properties are set is not significant. In user configuration files the form may look like this: #+begin_src emacs-lisp (setq modus-themes-headings '((1 . (background overline rainbow)) (2 . (background overline)) (t . (overline no-bold)))) #+end_src When defining the styles per heading level, it is possible to pass a non-nil value (~t~) instead of a list of properties. This will retain the original aesthetic for that level. For example: #+begin_src emacs-lisp (setq modus-themes-headings '((1 . t) ; keep the default style (2 . (background overline)) (t . (rainbow)))) ; style for all other headings (setq modus-themes-headings '((1 . (background overline)) (2 . (rainbow no-bold)) (t . t))) ; default style for all other levels #+end_src For Org users, the extent of the heading depends on the variable ~org-fontify-whole-heading-line~. This affects the ~overline~ and ~background~ properties. Depending on the version of Org, there may be others, such as ~org-fontify-done-headline~. [[#h:075eb022-37a6-41a4-a040-cc189f6bfa1f][Option for scaled headings]]. [[#h:97caca76-fa13-456c-aef1-a2aa165ea274][Option for variable-pitch font in headings]]. ** Option for scaled headings :properties: :alt_title: Scaled headings :description: Toggle scaling of headings :custom_id: h:075eb022-37a6-41a4-a040-cc189f6bfa1f :end: #+vindex: modus-themes-scale-headings Symbol: ~modus-themes-scale-headings~ Possible values: 1. ~nil~ (default) 2. ~t~ The default is to use the same size for headings and paragraph text. With a non-nil value (~t~) make headings larger in height relative to the main text. This is noticeable in modes like Org, Markdown, and Info. *** Control the scale of headings :properties: :alt_title: Scaled heading sizes :description: Specify rate of increase for scaled headings :custom_id: h:6868baa1-beba-45ed-baa5-5fd68322ccb3 :end: In addition to the toggle for enabling scaled headings, users can also specify a number of their own. + If it is a floating point, say, =1.5=, it is interpreted as a multiple of the base font size. This is the recommended method, because it will always adapt to changes in the base font size, such as while using the ~text-scale-adjust~ command. + If it is an integer, it is read as an absolute font height that is 1/10 of the typographic point size. Thus a value of =18pt= must be expressed as =180=. Setting an absolute value is discouraged, as it will break the layout in cases where the base font size must change, such as with the ~text-scale-adjust~ command ([[#h:defcf4fc-8fa8-4c29-b12e-7119582cc929][Font configurations]]). While we discourage using absolute values, we still provide for this option for users who do not need to perform text-scaling operations or who are content with whatever discrepancies in height. Below are the variables in their default values, using the floating point paradigm. The numbers are very conservative, but one is free to change them to their liking, such as =1.2=, =1.4=, =1.6=, =1.8=, =2.0=---or use a resource for finding a consistent scale: #+begin_src emacs-lisp (setq modus-themes-scale-1 1.05 modus-themes-scale-2 1.1 modus-themes-scale-3 1.15 modus-themes-scale-4 1.2 modus-themes-scale-title 1.3 modus-themes-scale-small 0.9) #+end_src As for the application of that scale, the variables that range from ~modus-themes-scale-1~ up to ~modus-themes-scale-4~ apply to regular headings within the context of the given major mode. The former is the smallest, while the latter is the largest. "Regular headings" are those that have a standard syntax for their scale, such as Org mode's eight levels of asterisks or Markdown's six columns. Whereas ~modus-themes-scale-title~ is applied to special headings that do not conform with the aforementioned syntax, yet which are expected to be larger than the largest value on that implied scale or at least have some unique purpose in the buffer. Put concretely, Org's =#+title= meta datum is not part of the eight levels of headings in an Org file, yet is supposed to signify the primary header. Similarly, the Org Agenda's structure headings are not part of a recognisable scale and so they also get ~modus-themes-scale-title~ ([[#h:68f481bc-5904-4725-a3e6-d7ecfa7c3dbc][Option for Org agenda constructs]]). Similarly ~modus-themes-scale-small~ is not applied to regular headings, but reserved for special contexts where the user is presented with an option to use a smaller font height than the base size. It is only implemented for the Org agenda. Users who wish to maintain scaled headings for the normal syntax while preventing special headings from standing out, can assign a value of =1.0= to ~modus-themes-scale-title~ to make it the same as body text (or whatever value would render it indistinguishable from the desired point of reference). Note that in earlier versions of Org, scaling would only increase the size of the heading, but not of keywords that were added to it, like "TODO". The issue has been fixed upstream: . ** Option for variable-pitch font in UI elements :properties: :alt_title: UI typeface :description: Toggle the use of variable-pitch across the User Interface :custom_id: h:16cf666c-5e65-424c-a855-7ea8a4a1fcac :end: #+vindex: modus-themes-variable-pitch-ui Symbol: ~modus-themes-variable-pitch-ui~ Possible values: 1. ~nil~ (default) 2. ~t~ This option concerns User Interface elements that are under the direct control of Emacs. In particular: the mode line, header line, tab bar, and tab line. The default is to use the same font as the rest of Emacs, which usually is a monospaced family. With a non-nil value (~t~) apply a proportionately spaced typeface. This is done by assigning the ~variable-pitch~ face to the relevant items. [[#h:defcf4fc-8fa8-4c29-b12e-7119582cc929][Font configurations for Org and others]]. ** Option for variable-pitch font in headings :properties: :alt_title: Headings' typeface :description: Toggle the use of variable-pitch in headings :custom_id: h:97caca76-fa13-456c-aef1-a2aa165ea274 :end: #+vindex: modus-themes-variable-pitch-headings Symbol: ~modus-themes-variable-pitch-headings~ Possible values: 1. ~nil~ (default) 2. ~t~ The default is to use the main font family, which typically is monospaced. With a non-nil value (~t~) apply a proportionately spaced typeface, else "variable-pitch", to headings (such as in Org mode). [[#h:defcf4fc-8fa8-4c29-b12e-7119582cc929][Font configurations for Org and others]]. * Advanced customization (do-it-yourself) :properties: :custom_id: h:f4651d55-8c07-46aa-b52b-bed1e53463bb :end: Unlike the predefined customization options which follow a clear pattern of allowing the user to quickly specify their preference, the themes also provide a more flexible, albeit difficult, mechanism to control things with precision ([[#h:bf1c82f2-46c7-4eb2-ad00-dd11fdd8b53f][Customization Options]]). This section is of interest only to users who are prepared to maintain their own local tweaks and who are willing to deal with any possible incompatibilities between versioned releases of the themes. As such, they are labelled as "do-it-yourself" or "DIY". ** Per-theme customization settings (DIY) :properties: :custom_id: h:a897b302-8e10-4a26-beab-3caaee1e1193 :end: If you prefer to maintain different customization options between the two themes, it is best you write your own functions that first set those options and then load the relevant theme. The following code does exactly that by simply differentiating the two themes on the choice of bold constructs in code syntax (enabled for one, disabled for the other). #+begin_src emacs-lisp (defun my-demo-modus-operandi () (interactive) (setq modus-themes-bold-constructs t) ; ENABLE bold (modus-themes-load-operandi)) (defun my-demo-modus-vivendi () (interactive) (setq modus-themes-bold-constructs nil) ; DISABLE bold (modus-themes-load-vivendi)) (defun my-demo-modus-themes-toggle () (if (eq (car custom-enabled-themes) 'modus-operandi) (my-demo-modus-vivendi) (my-demo-modus-operandi))) #+end_src Then assign ~my-demo-modus-themes-toggle~ to a key instead of the equivalent the themes provide. For a more elaborate design, it is better to inspect the source code of ~modus-themes-toggle~ and relevant functions. ** Case-by-case face specs using the themes' palette (DIY) :properties: :custom_id: h:1487c631-f4fe-490d-8d58-d72ffa3bd474 :end: #+findex: modus-themes-color #+findex: modus-themes-color-alts #+cindex: Extracting individual colors This section is about tweaking individual faces. If you plan to do things at scale, consult the next section: [[#h:51ba3547-b8c8-40d6-ba5a-4586477fd4ae][Set multiple faces]]. We already covered in previous sections how to toggle between the themes and how to configure options prior to loading. We also explained that some of the functions made available to users will fire up a hook that can be used to pass tweaks in the post-theme-load phase. Now assume you wish to change a single face, say, the ~cursor~. And you would like to get the standard "blue" color value of the active Modus theme, whether it is Modus Operandi or Modus Vivendi. To do that, you can use the ~modus-themes-color~ function. It accepts a symbol that is associated with a color in ~modus-themes-operandi-colors~ and ~modus-themes-vivendi-colors~. Like this: #+begin_src emacs-lisp (modus-themes-color 'blue) #+end_src The function always extracts the color value of the active Modus theme. #+begin_src emacs-lisp (progn (load-theme 'modus-operandi t) (modus-themes-color 'blue)) ; "#0031a9" for `modus-operandi' (progn (load-theme 'modus-vivendi t) (modus-themes-color 'blue)) ; "#2fafff" for `modus-vivendi' #+end_src Do {{{kbd(C-h v)}}} on the aforementioned variables to check all the available symbols that can be passed to this function. With that granted, let us expand the example to actually change the ~cursor~ face's background property. We employ the built-in function of ~set-face-attribute~: #+begin_src emacs-lisp (set-face-attribute 'cursor nil :background (modus-themes-color 'blue)) #+end_src If you evaluate this form, your cursor will become blue. But if you change themes, such as with ~modus-themes-toggle~, your edits will be lost, because the newly loaded theme will override the ~:background~ attribute you had assigned to that face. For such changes to persist, we need to make them after loading the theme. So we rely on ~modus-themes-after-load-theme-hook~, which gets called from ~modus-themes-load-operandi~, ~modus-themes-load-vivendi~, as well as the command ~modus-themes-toggle~. Here is a sample function that tweaks two faces and then gets added to the hook: #+begin_src emacs-lisp (defun my-modus-themes-custom-faces () (set-face-attribute 'cursor nil :background (modus-themes-color 'blue)) (set-face-attribute 'font-lock-type-face nil :foreground (modus-themes-color 'magenta-alt))) (add-hook 'modus-themes-after-load-theme-hook #'my-modus-themes-custom-faces) #+end_src [[#h:86f6906b-f090-46cc-9816-1fe8aeb38776][A theme-agnostic hook for theme loading]]. Using this principle, it is possible to override the styles of faces without having to find color values for each case. Another application is to control the precise weight for bold constructs. This is particularly useful if your typeface has several variants such as "heavy", "extrabold", "semibold". All you have to do is edit the ~bold~ face. For example: #+begin_src emacs-lisp (set-face-attribute 'bold nil :weight 'semibold) #+end_src Remember to use the custom function and hook combo we demonstrated above. Because the themes do not hard-wire a specific weight, this simple form is enough to change the weight of all bold constructs throughout the interface. Finally, there are cases where you want to tweak colors though wish to apply different ones to each theme, say, a blue hue for Modus Operandi and a shade of red for Modus Vivendi. To this end, we provide ~modus-themes-color-alts~ as a convenience function to save you from the trouble of writing separate wrappers for each theme. It still returns a single value by querying either of ~modus-themes-operandi-colors~ and ~modus-themes-vivendi-colors~, only here you pass the two keys you want, first for ~modus-operandi~ then ~modus-vivendi~. Take the previous example with the ~cursor~ face: #+begin_src emacs-lisp ;; Blue for `modus-operandi' and red for `modus-vivendi' (set-face-attribute 'cursor nil :background (modus-themes-color-alts 'blue 'red)) #+end_src ** Face specs at scale using the themes' palette (DIY) :properties: :custom_id: h:51ba3547-b8c8-40d6-ba5a-4586477fd4ae :end: #+findex: modus-themes-with-colors #+cindex: Extracting colors en masse The examples here are for large scale operations. For simple, one-off tweaks, you may prefer the approach documented in the previous section ([[#h:1487c631-f4fe-490d-8d58-d72ffa3bd474][Case-by-case face specs using the themes' palette]]). The ~modus-themes-with-colors~ macro lets you retrieve multiple color values by employing the backquote/backtick and comma notation. The values are stored in the alists ~modus-themes-operandi-colors~ and ~modus-themes-vivendi-colors~, while the macro always queries that of the active Modus theme. Here is an abstract example that just returns a list of color values while ~modus-operandi~ is enabled: #+begin_src emacs-lisp (modus-themes-with-colors (list fg-main blue-faint magenta magenta-alt-other cyan-alt-other fg-special-cold blue-alt magenta-faint cyan fg-main green-faint red-alt-faint blue-alt-faint fg-special-warm cyan-alt blue)) ;; => ;; ("#000000" "#002f88" "#721045" "#5317ac" ;; "#005a5f" "#093060" "#2544bb" "#752f50" ;; "#00538b" "#000000" "#104410" "#702f00" ;; "#003f78" "#5d3026" "#30517f" "#0031a9") #+end_src Getting a list of colors may have its applications, though what you are most likely interested in is how to use those variables to configure several faces at once. To do so we can rely on the built-in ~custom-set-faces~ function, which sets face specifications for the special ~user~ theme. That "theme" gets applied on top of regular themes like ~modus-operandi~ and ~modus-vivendi~. This is how it works: #+begin_src emacs-lisp (modus-themes-with-colors (custom-set-faces `(cursor ((,class :background ,blue))) `(mode-line ((,class :background ,yellow-nuanced-bg :foreground ,yellow-nuanced-fg))) `(mode-line-inactive ((,class :background ,blue-nuanced-bg :foreground ,blue-nuanced-fg))))) #+end_src The above snippet will immediately refashion the faces it names once it is evaluated. However, if you switch between the Modus themes, say, from ~modus-operandi~ to ~modus-vivendi~, the colors will not get updated to match those of the new theme. To make things work across the themes, we need to employ the same technique we discussed in the previous section, namely, to pass our changes at the post-theme-load phase via a hook. The themes provide the ~modus-themes-after-load-theme-hook~, which gets called from ~modus-themes-load-operandi~, ~modus-themes-load-vivendi~, as well as the command ~modus-themes-toggle~. With this knowledge, you can wrap the macro in a function and then assign that function to the hook. Thus: #+begin_src emacs-lisp (defun my-modus-themes-custom-faces () (modus-themes-with-colors (custom-set-faces `(cursor ((,class :background ,blue))) `(mode-line ((,class :background ,yellow-nuanced-bg :foreground ,yellow-nuanced-fg))) `(mode-line-inactive ((,class :background ,blue-nuanced-bg :foreground ,blue-nuanced-fg)))))) (add-hook 'modus-themes-after-load-theme-hook #'my-modus-themes-custom-faces) #+end_src [[#h:86f6906b-f090-46cc-9816-1fe8aeb38776][A theme-agnostic hook for theme loading]]. To discover the faces defined by all loaded libraries, you may do {{{kbd(M-x list-faces-display)}}}. Be warned that when you ~:inherit~ a face you are introducing an implicit dependency, so try to avoid doing so for libraries other than the built-in {{{file(faces.el)}}} (or at least understand that things may break if you inherit from a yet-to-be-loaded face). Also bear in mind that these examples are meant to work with the Modus themes. If you are cycling between multiple themes you may encounter unforeseen issues, such as the colors of the Modus themes being applied to a non-Modus item. Finally, note that you can still use other functions where those make sense. For example, the ~modus-themes-color-alts~ that was discussed in the previous section. Adapt the above example like this: #+begin_src emacs-lisp ... (modus-themes-with-colors (custom-set-faces `(cursor ((,class :background ,(modus-themes-color-alts 'blue 'green)))) ...)) #+end_src ** Remap face with local value (DIY) :properties: :custom_id: h:7a93cb6f-4eca-4d56-a85c-9dcd813d6b0f :end: #+cindex: Remapping faces There are cases where we need to change the buffer-local attributes of a face. This might be because we have our own minor mode that re-uses a face for a particular purpose, such as a line selection tool that activates ~hl-line-mode~, but we wish to keep it distinct from other buffers. This is where ~face-remap-add-relative~ can be applied and may be combined with ~modus-themes-with-colors~ to deliver consistent results. [[#h:51ba3547-b8c8-40d6-ba5a-4586477fd4ae][Face specs at scale using the themes' palette]]. In this example we will write a simple interactive function that adjusts the background color of the ~region~ face. This is the sample code: #+begin_src emacs-lisp (defvar my-rainbow-region-colors (modus-themes-with-colors `((red . ,red-subtle-bg) (green . ,green-subtle-bg) (yellow . ,yellow-subtle-bg) (blue . ,blue-subtle-bg) (magenta . ,magenta-subtle-bg) (cyan . ,cyan-subtle-bg))) "Sample list of color values for `my-rainbow-region'.") (defun my-rainbow-region (color) "Remap buffer-local attribute of `region' using COLOR." (interactive (list (completing-read "Pick a color: " my-rainbow-region-colors))) (face-remap-add-relative 'region `( :background ,(alist-get (intern color) my-rainbow-region-colors) :foreground ,(face-attribute 'default :foreground)))) #+end_src When ~my-rainbow-region~ is called interactively, it prompts for a color to use. The list of candidates is drawn from the car of each association in ~my-rainbow-region-colors~ (so "red", "green", etc.). To extend this principle, we may write wrapper functions that pass a color directly. Those can be useful in tandem with hooks. Consider this example: #+begin_src emacs-lisp (defun my-rainbow-region-magenta () (my-rainbow-region 'magenta)) (add-hook 'diff-mode-hook #'my-rainbow-region-magenta) #+end_src Whenever we enter a ~diff-mode~ buffer, we now get a magenta-colored region. Perhaps you may wish to generalise those findings in to a set of functions that also accept an arbitrary face. We shall leave the experimentation up to you. ** Cycle through arbitrary colors (DIY) :properties: :custom_id: h:77dc4a30-b96a-4849-85a8-fee3c2995305 :end: #+cindex: Cycle colors Users may opt to customize individual faces of the themes to accommodate their particular needs. One such case is with the color intensity of comments, specifically the foreground of ~font-lock-comment-face~. The Modus themes set that to a readable value, in accordance with their accessibility objective, though users may prefer to lower the overall contrast on an on-demand basis. One way to achieve this is to design a command that cycles through three distinct levels of intensity, though the following can be adapted to any kind of cyclic behaviour, such as to switch between red, green, and blue. In the following example, we employ the ~modus-themes-color~ function which reads a symbol that represents an entry in the active theme's color palette ([[#h:1487c631-f4fe-490d-8d58-d72ffa3bd474][Case-by-case face specs using the themes' palette]]). Those are stored in ~my-modus-themes-comment-colors~. #+begin_src emacs-lisp (defvar my-modus-themes-comment-colors ;; We are abusing the palette here, as those colors have their own ;; purpose in the palette, so please ignore the semantics of their ;; names. '((low . bg-region) (medium . bg-tab-inactive-alt) (high . fg-alt)) "Alist of levels of intensity mapped to color palette entries. The entries are found in `modus-themes-operandi-colors' or `modus-themes-vivendi-colors'.") (defvar my-modus-themes--adjust-comment-color-state nil "The cyclic state of `my-modus-themes-adjust-comment-color'. For internal use.") (defun my-modus-themes--comment-foreground (degree state) "Set `font-lock-comment-face' foreground. Use `my-modus-themes-comment-colors' to extract the color value for each level of intensity. This is complementary to `my-modus-themes-adjust-comment-color'." (let ((palette-colors my-modus-themes-comment-colors)) (set-face-foreground 'font-lock-comment-face (modus-themes-color (alist-get degree palette-colors))) (setq my-modus-themes--adjust-comment-color-state state) (message "Comments are set to %s contrast" degree))) (defun my-modus-themes-adjust-comment-color () "Cycle through levels of intensity for comments. The levels are determined by `my-modus-themes-comment-colors'." (interactive) (pcase my-modus-themes--adjust-comment-color-state ('nil (my-modus-themes--comment-foreground 'low 1)) (1 (my-modus-themes--comment-foreground 'medium 2)) (_ (my-modus-themes--comment-foreground 'high nil)))) #+end_src With the above, {{{kbd(M-x my-modus-themes-adjust-comment-color)}}} will cycle through the three levels of intensity that have been specified. Another approach is to not read from the active theme's color palette and instead provide explicit color values, either in hexadecimal RGB notation (like =#123456=) or as the names that are displayed in the output of {{{kbd(M-x list-colors-display)}}}. In this case, the alist with the colors will have to account for the active theme, so as to set the appropriate colors. While this introduces a bit more complexity, it ultimately offers greater flexibility on the choice of colors for such a niche functionality (so there is no need to abuse the palette of the active Modus theme): #+begin_src emacs-lisp (defvar my-modus-themes-comment-colors '((light . ((low . "gray75") (medium . "gray50") (high . "#505050"))) ; the default for `modus-operandi' (dark . ((low . "gray25") (medium . "gray50") (high . "#a8a8a8")))) ; the default for `modus-vivendi' "Alist of levels of intensity mapped to color values. For such colors, consult the command `list-colors-display'. Pass the name of a color or its hex value.") (defvar my-modus-themes--adjust-comment-color-state nil "The cyclic state of `my-modus-themes-adjust-comment-color'. For internal use.") (defun my-modus-themes--comment-foreground (degree state) "Set `font-lock-comment-face' foreground. Use `my-modus-themes-comment-colors' to extract the color value for each level of intensity. This is complementary to `my-modus-themes-adjust-comment-color'." (let* ((colors my-modus-themes-comment-colors) (levels (pcase (car custom-enabled-themes) ('modus-operandi (alist-get 'light colors)) ('modus-vivendi (alist-get 'dark colors))))) (set-face-foreground 'font-lock-comment-face (alist-get degree levels)) (setq my-modus-themes--adjust-comment-color-state state) (message "Comments are set to %s contrast" degree))) (defun my-modus-themes-adjust-comment-color () "Cycle through levels of intensity for comments. The levels are determined by `my-modus-themes-comment-colors'." (interactive) (pcase my-modus-themes--adjust-comment-color-state ('nil (my-modus-themes--comment-foreground 'low 1)) (1 (my-modus-themes--comment-foreground 'medium 2)) (_ (my-modus-themes--comment-foreground 'high nil)))) #+end_src The effect of the above configurations on ~font-lock-comment-face~ is global. To make it buffer-local, one must tweak the code to employ the function ~face-remap-add-relative~ ([[#h:7a93cb6f-4eca-4d56-a85c-9dcd813d6b0f][Remap face with local value]]). So this form in ~my-modus-themes--comment-foreground~: #+begin_src emacs-lisp ;; example 1 (... (set-face-foreground 'font-lock-comment-face (modus-themes-color (alist-get degree palette-colors))) ...) ;; example 2 (... (set-face-foreground 'font-lock-comment-face (alist-get degree levels)) ...) #+end_src Must become this: #+begin_src emacs-lisp ;; example 1 (... (face-remap-add-relative 'font-lock-comment-face `(:foreground ,(modus-themes-color (alist-get degree palette-colors)))) ...) ;; example 2 (... (face-remap-add-relative 'font-lock-comment-face `(:foreground ,(alist-get degree levels))) ...) #+end_src ** Override colors (DIY) :properties: :custom_id: h:307d95dd-8dbd-4ece-a543-10ae86f155a6 :end: #+vindex: modus-themes-operandi-color-overrides #+vindex: modus-themes-vivendi-color-overrides #+cindex: Change a theme's colors The themes provide a mechanism for overriding their color values. This is controlled by the variables ~modus-themes-operandi-color-overrides~ and ~modus-themes-vivendi-color-overrides~, which are alists that should mirror a subset of the associations in ~modus-themes-operandi-colors~ and ~modus-themes-vivendi-colors~ respectively. As with all customisations, overriding must be done before loading the affected theme. Let us approach the present topic one step at a time. Here is a simplified excerpt of the default palette for Modus Operandi with some basic background values that apply to buffers and the mode line (remember to inspect the actual value to find out all the associations that can be overridden): #+begin_src emacs-lisp (defconst modus-themes-operandi-colors '((bg-main . "#ffffff") (bg-dim . "#f8f8f8") (bg-alt . "#f0f0f0") (bg-active . "#d7d7d7") (bg-inactive . "#efefef"))) #+end_src As one can tell, we bind a key to a hexadecimal RGB color value. Now say we wish to override those specific values and have our changes propagate to all faces that use those keys. We could write something like this, which adds a subtle ochre tint: #+begin_src emacs-lisp (setq modus-themes-operandi-color-overrides '((bg-main . "#fefcf4") (bg-dim . "#faf6ef") (bg-alt . "#f7efe5") (bg-active . "#e8dfd1") (bg-inactive . "#f6ece5"))) #+end_src Once this is evaluated, any subsequent loading of ~modus-operandi~ will use those values instead of the defaults. No further intervention is required. To reset the changes, we apply this and reload the theme: #+begin_src emacs-lisp (setq modus-themes-operandi-color-overrides nil) #+end_src Users who wish to leverage such a mechanism can opt to implement it on-demand by means of a global minor mode. The following snippet covers both themes and expands to some more assosiations in the palette: #+begin_src emacs-lisp (define-minor-mode my-modus-themes-tinted "Tweak some Modus themes colors." :init-value nil :global t (if my-modus-themes-tinted (setq modus-themes-operandi-color-overrides '((bg-main . "#fefcf4") (bg-dim . "#faf6ef") (bg-alt . "#f7efe5") (bg-hl-line . "#f4f0e3") (bg-active . "#e8dfd1") (bg-inactive . "#f6ece5") (bg-region . "#c6bab1") (bg-header . "#ede3e0") (bg-tab-bar . "#dcd3d3") (bg-tab-active . "#fdf6eb") (bg-tab-inactive . "#c8bab8") (fg-unfocused . "#55556f")) modus-themes-vivendi-color-overrides '((bg-main . "#100b17") (bg-dim . "#161129") (bg-alt . "#181732") (bg-hl-line . "#191628") (bg-active . "#282e46") (bg-inactive . "#1a1e39") (bg-region . "#393a53") (bg-header . "#202037") (bg-tab-bar . "#262b41") (bg-tab-active . "#120f18") (bg-tab-inactive . "#3a3a5a") (fg-unfocused . "#9a9aab"))) (setq modus-themes-operandi-color-overrides nil modus-themes-vivendi-color-overrides nil))) #+end_src With this in place, one can invoke {{{kbd(M-x my-modus-themes-tinted)}}} and then load the Modus theme of their choice. The new palette subset will come into effect: subtle ochre tints for Modus Operandi and night sky shades for Modus Vivendi. Switching between the two themes, such as with {{{kbd(M-x modus-themes-toggle)}}} will also use the overrides. Given that this is a user-level customisation, one is free to implement whatever color values they desire, even if the possible combinations fall below the minimum 7:1 contrast ratio that governs the design of the themes (the WCAG AAA legibility standard). Alternatively, this can also be done programmatically ([[#h:4589acdc-2505-41fc-9f5e-699cfc45ab00][Override color saturation]]). For manual interventions it is advised to inspect the source code of ~modus-themes-operandi-colors~ and ~modus-themes-vivendi-colors~ for the inline commentary: it explains what the intended use of each palette subset is. Furthermore, users may benefit from the ~modus-themes-contrast~ function that we provide: [[#h:02e25930-e71a-493d-828a-8907fc80f874][test color combinations]]. It measures the contrast ratio between two color values, so it can help in overriding the palette (or a subset thereof) without making the end result inaccessible. ** Override color saturation (DIY) :properties: :custom_id: h:4589acdc-2505-41fc-9f5e-699cfc45ab00 :end: #+cindex: Change a theme's color saturation In the previous section we documented how one can override color values manually ([[#h:307d95dd-8dbd-4ece-a543-10ae86f155a6][Override colors]]). Here we use a programmatic approach which leverages the built-in ~color-saturate-name~ function to adjust the saturation of all color values used by the active Modus theme. Our goal is to prepare a counterpart of the active theme's palette that holds modified color values, adjusted for a percent change in saturation. A positive number amplifies the effect, while a negative one will move towards a grayscale spectrum. We start with a function that can be either called from Lisp or invoked interactively. In the former scenario, we pass to it the rate of change we want. While in the latter, a minibuffer prompt asks for a number to apply the desired effect. In either case, we intend to assign anew the value of ~modus-themes-operandi-color-overrides~ (light theme) and the same for ~modus-themes-vivendi-color-overrides~ (dark theme). #+begin_src emacs-lisp (defun my-modus-themes-saturate (percent) "Saturate current Modus theme palette overrides by PERCENT." (interactive (list (read-number "Saturation by percent: "))) (let* ((theme (modus-themes--current-theme)) (palette (pcase theme ('modus-operandi modus-themes-operandi-colors) ('modus-vivendi modus-themes-vivendi-colors) (_ (error "No Modus theme is active")))) (overrides (pcase theme ('modus-operandi 'modus-themes-operandi-color-overrides) ('modus-vivendi 'modus-themes-vivendi-color-overrides) (_ (error "No Modus theme is active"))))) (let (name cons colors) (dolist (cons palette) (setq name (color-saturate-name (cdr cons) percent)) (setq name (format "%s" name)) (setq cons `(,(car cons) . ,name)) (push cons colors)) (set overrides colors)) (pcase theme ('modus-operandi (modus-themes-load-operandi)) ('modus-vivendi (modus-themes-load-vivendi))))) ;; sample Elisp calls (or call `my-modus-themes-saturate' interactively) (my-modus-themes-saturate 50) (my-modus-themes-saturate -75) #+end_src Using the above has an immediate effect, as it reloads the active Modus theme. The =my-modus-themes-saturate= function stores new color values in the variables ~modus-themes-operandi-color-overrides~ and ~modus-themes-vivendi-color-overrides~, meaning that it undoes changes implemented by the user on individual colors. To have both automatic saturation adjustment across the board and retain per-case edits to the palette, some tweaks to the above function are required. For example: #+begin_src emacs-lisp (defvar my-modus-themes-vivendi-extra-color-overrides '((fg-main . "#ead0c0") (bg-main . "#050515")) "My bespoke colors for `modus-vivendi'.") (defvar my-modus-themes-operandi-extra-color-overrides '((fg-main . "#1a1a1a") (bg-main . "#fefcf4")) "My bespoke colors for `modus-operandi'.") (defun my-modus-themes-saturate (percent) "Saturate current Modus theme palette overrides by PERCENT. Preserve the color values stored in `my-modus-themes-operandi-extra-color-overrides', `my-modus-themes-vivendi-extra-color-overrides'." (interactive (list (read-number "Saturation by percent: "))) (let* ((theme (modus-themes--current-theme)) (palette (pcase theme ('modus-operandi modus-themes-operandi-colors) ('modus-vivendi modus-themes-vivendi-colors) (_ (error "No Modus theme is active")))) (overrides (pcase theme ('modus-operandi 'modus-themes-operandi-color-overrides) ('modus-vivendi 'modus-themes-vivendi-color-overrides) (_ (error "No Modus theme is active")))) (extra-overrides (pcase theme ('modus-operandi my-modus-themes-operandi-extra-color-overrides) ('modus-vivendi my-modus-themes-vivendi-extra-color-overrides) (_ (error "No Modus theme is active"))))) (let (name cons colors) (dolist (cons palette) (setq name (color-saturate-name (cdr cons) percent)) (setq name (format "%s" name)) (setq cons `(,(car cons) . ,name)) (push cons colors)) (set overrides (append extra-overrides colors))) (pcase theme ('modus-operandi (modus-themes-load-operandi)) ('modus-vivendi (modus-themes-load-vivendi))))) #+end_src To disable the effect, one must reset the aforementioned variables of the themes to ~nil~. Or specify a command for it, such as by taking inspiration from the ~modus-themes-toggle~ we already provide: #+begin_src emacs-lisp (defun my-modus-themes-revert-overrides () "Reset palette overrides and reload active Modus theme." (interactive) (setq modus-themes-operandi-color-overrides nil modus-themes-vivendi-color-overrides nil) (pcase (modus-themes--current-theme) ('modus-operandi (modus-themes-load-operandi)) ('modus-vivendi (modus-themes-load-vivendi)))) #+end_src ** Font configurations for Org and others (DIY) :properties: :custom_id: h:defcf4fc-8fa8-4c29-b12e-7119582cc929 :end: #+cindex: Font configurations The themes are designed to cope well with mixed font configurations. [[#h:115e6c23-ee35-4a16-8cef-e2fcbb08e28b][Option for no font mixing]]. This mostly concerns ~org-mode~ and ~markdown-mode~, though expect to find it elsewhere like in ~Info-mode~. In practice it means that the user can safely opt for a more prose-friendly proportionately spaced typeface as their default, while letting spacing-sensitive elements like tables and inline code always use a monospaced font, by inheriting from the ~fixed-pitch~ face. Users can try the built-in {{{kbd(M-x variable-pitch-mode)}}} to see the effect in action. To make everything use your desired font families, you need to configure the ~variable-pitch~ (proportional spacing) and ~fixed-pitch~ (monospaced) faces respectively. It may also be convenient to set your main typeface by configuring the ~default~ face the same way. Put something like this in your initialization file (also consider reading the doc string of ~set-face-attribute~): #+begin_src emacs-lisp ;; Main typeface (set-face-attribute 'default nil :family "DejaVu Sans Mono" :height 110) ;; Proportionately spaced typeface (set-face-attribute 'variable-pitch nil :family "DejaVu Serif" :height 1.0) ;; Monospaced typeface (set-face-attribute 'fixed-pitch nil :family "DejaVu Sans Mono" :height 1.0) #+end_src The next section shows how to make those work in a more elaborate setup that is robust to changes between the Modus themes. [[#h:2793a224-2109-4f61-a106-721c57c01375][Configure bold and italic faces]]. Note the differences in the ~:height~ property. The ~default~ face must specify an absolute value, which is the point size × 10. So if you want to use a font at point size =11=, you set the height to =110=.[fn:: ~:height~ values do not need to be rounded to multiples of ten: the likes of =115= are perfectly valid—some typefaces will change to account for those finer increments.] Whereas every other face must have a value that is relative to the default, represented as a floating point (if you use an integer, then that means an absolute height). This is of paramount importance: it ensures that all fonts can scale gracefully when using something like the ~text-scale-adjust~ command which only operates on the base font size (i.e. the ~default~ face's absolute height). [[#h:e6c5451f-6763-4be7-8fdb-b4706a422a4c][Note for EWW and Elfeed fonts (SHR fonts)]]. ** Configure bold and italic faces (DIY) :properties: :custom_id: h:2793a224-2109-4f61-a106-721c57c01375 :end: #+cindex: Bold and italic fonts The Modus themes do not hardcode a ~:weight~ or ~:slant~ attribute in the thousands of faces they cover. Instead, they configure the generic faces called ~bold~ and ~italic~ to use the appropriate styles and then instruct all relevant faces that require emphasis to inherit from them. This practically means that users can change the particularities of what it means for a construct to be bold/italic, by tweaking the ~bold~ and ~italic~ faces. Cases where that can be useful include: + The default typeface does not have a variant with slanted glyphs (e.g. Fira Mono/Code as of this writing on 2021-07-07), so the user wants to add another family for the italics, such as Hack. + The typeface of choice provides a multitude of weights and the user prefers the light one by default. To prevent the bold weight from being too heavy compared to the light one, they opt to make ~bold~ use a semibold weight. + The typeface distinguishes between oblique and italic forms by providing different font variants (the former are just slanted versions of the upright forms, while the latter have distinguishing features as well). In this case, the user wants to specify the font that applies to the ~italic~ face. To achieve those effects, one must first be sure that the fonts they use have support for those features. It then is a matter of following the instructions for all face tweaks. [[#h:defcf4fc-8fa8-4c29-b12e-7119582cc929][Font configurations for Org and others]]. In this example, we set the default font family to Fira Code, while we choose to render italics in the Hack typeface (obviously you need to pick fonts that work well together): #+begin_src emacs-lisp (set-face-attribute 'default nil :family "Fira Code" :height 110) (set-face-attribute 'italic nil :family "Hack") #+end_src And here we play with different weights, using Source Code Pro: #+begin_src emacs-lisp (set-face-attribute 'default nil :family "Source Code Pro" :height 110 :weight 'light) (set-face-attribute 'bold nil :weight 'semibold) #+end_src To reset the font family, one can use this: #+begin_src emacs-lisp (set-face-attribute 'italic nil :family 'unspecified) #+end_src To ensure that the effects persist after switching between the Modus themes (such as with {{{kbd(M-x modus-themes-toggle)}}}), the user needs to write their configurations to a function and hook it up to the ~modus-themes-after-load-theme-hook~. This is necessary because the themes set the default styles of faces (otherwise changing themes would not be possible). [[#h:86f6906b-f090-46cc-9816-1fe8aeb38776][A theme-agnostic hook for theme loading]]. This is a minimal setup to preserve font configurations across theme load phases. For a more permanent setup, it is better to employ the ~custom-set-faces~ function: ~set-face-attribute~ works just fine, though it is more convenient for quick previews or for smaller scale operations (~custom-set-faces~ follows the format used in the source code of the themes). #+begin_src emacs-lisp ;; our generic function (defun my-modes-themes-bold-italic-faces () (set-face-attribute 'default nil :family "Source Code Pro" :height 110) (set-face-attribute 'bold nil :weight 'semibold)) ;; or use this if you configure a lot of face and attributes and ;; especially if you plan to use `modus-themes-with-colors', as shown ;; elsewhere in the manual (defun my-modes-themes-bold-italic-faces () (custom-set-faces '(default ((t :family "Source Code Pro" :height 110))) '(bold ((t :weight semibold))))) ;; and here is the hook (add-hook 'modus-themes-after-load-theme-hook #'my-modes-themes-bold-italic-faces) #+end_src ** Custom Org user faces (DIY) :properties: :custom_id: h:89f0678d-c5c3-4a57-a526-668b2bb2d7ad :end: #+cindex: Org extra faces Users of ~org-mode~ have the option to configure various keywords and priority cookies to better match their workflow. User options are ~org-todo-keyword-faces~ and ~org-priority-faces~. As those are meant to be custom faces, it is futile to have the themes guess what each user wants to use, which keywords to target, and so on. Instead, we can provide guidelines on how to customize things to one's liking with the intent of retaining the overall aesthetic of the themes. Please bear in mind that the end result of those is not controlled by the active Modus theme but by how Org maps faces to its constructs. Editing those while ~org-mode~ is active requires re-initialization of the mode with {{{kbd(M-x org-mode-restart)}}} for changes to take effect. Let us assume you wish to visually differentiate your keywords. You have something like this: #+begin_src emacs-lisp (setq org-todo-keywords '((sequence "TODO(t)" "|" "DONE(D)" "CANCEL(C)") (sequence "MEET(m)" "|" "MET(M)") (sequence "STUDY(s)" "|" "STUDIED(S)") (sequence "WRITE(w)" "|" "WROTE(W)"))) #+end_src You could then use a variant of the following to inherit from a face that uses the styles you want and also to preserve the properties applied by the ~org-todo~ face (in case there is a difference between the two): #+begin_src emacs-lisp (setq org-todo-keyword-faces '(("MEET" . '(bold org-todo)) ("STUDY" . '(warning org-todo)) ("WRITE" . '(shadow org-todo)))) #+end_src This will refashion the keywords you specify, while letting the other items in ~org-todo-keywords~ use their original styles (which are defined in the ~org-todo~ and ~org-done~ faces). If you want back the defaults, try specifying just the ~org-todo~ face: #+begin_src emacs-lisp (setq org-todo-keyword-faces '(("MEET" . org-todo) ("STUDY" . org-todo) ("WRITE" . org-todo))) #+end_src When you inherit from multiple faces, you need to quote the list as shown further above. The order is significant: the first entry is applied on top of the second, overriding any properties that are explicitly set for both of them: any property that is not specified is not overridden, so, for example, if ~org-todo~ has a background and a foreground, while ~font-lock-type-face~ only has a foreground, the merged face will include the background of the former and the foreground of the latter. If you do not want to blend multiple faces, you do not need a quoted list. A pattern of =keyword . face= will suffice. Both approaches can be used simultaneously, as illustrated in this configuration of the priority cookies: #+begin_src emacs-lisp (setq org-priority-faces '((?A . '(bold org-priority)) (?B . org-priority) (?C . '(shadow org-priority)))) #+end_src To find all the faces that are loaded in your current Emacs session, use {{{kbd(M-x list-faces-display)}}}. Try {{{kbd(M-x describe-variable)}}} as well and then specify the name of each of those Org variables demonstrated above. Their documentation strings will offer you further guidance. Recall that the themes let you retrieve a color from their palette. Do it if you plan to control face attributes. [[#h:1487c631-f4fe-490d-8d58-d72ffa3bd474][Custom face specs using the themes' palette]]. [[#h:02e25930-e71a-493d-828a-8907fc80f874][Check color combinations]]. ** Update Org block delimiter fontification (DIY) :properties: :custom_id: h:f44cc6e3-b0f1-4a5e-8a90-9e48fa557b50 :end: As noted in the section about ~modus-themes-org-blocks~, Org contains a variable that determines whether the block's begin and end lines are extended to the edge of the window ([[#h:b7e328c0-3034-4db7-9cdf-d5ba12081ca2][Option for org-mode block styles]]). The variable is ~org-fontify-whole-block-delimiter-line~. Users who change the style of Org blocks from time to time may prefer to automatically update delimiter line fontification, such as with the following setup: #+begin_src emacs-lisp (defun my-modus-themes-org-fontify-block-delimiter-lines () "Match `org-fontify-whole-block-delimiter-line' to theme style. Run this function at the post theme load phase, such as with the `modus-themes-after-load-theme-hook'." (if (eq modus-themes-org-blocks 'gray-background) (setq org-fontify-whole-block-delimiter-line t) (setq org-fontify-whole-block-delimiter-line nil))) (add-hook 'modus-themes-after-load-theme-hook #'my-modus-themes-org-fontify-block-delimiter-lines) #+end_src Then {{{kbd(M-x org-mode-restart)}}} for changes to take effect, though manual intervention can be circumvented by tweaking the function thus: #+begin_src emacs-lisp (defun my-modus-themes-org-fontify-block-delimiter-lines () "Match `org-fontify-whole-block-delimiter-line' to theme style. Run this function at the post theme load phase, such as with the `modus-themes-after-load-theme-hook'." (if (eq modus-themes-org-blocks 'gray-background) (setq org-fontify-whole-block-delimiter-line t) (setq org-fontify-whole-block-delimiter-line nil)) (when (derived-mode-p 'org-mode) (font-lock-flush))) #+end_src ** Measure color contrast (DIY) :properties: :custom_id: h:02e25930-e71a-493d-828a-8907fc80f874 :end: #+findex: modus-themes-contrast #+findex: modus-themes-wcag-formula #+cindex: Color contrast The themes provide the functions ~modus-themes-wcag-formula~ and ~modus-themes-contrast~. The former is a direct implementation of the WCAG formula: . It calculates the relative luminance of a color value that is expressed in hexadecimal RGB notation. While the latter function is just a convenient wrapper for comparing the relative luminance between two colors. In practice, one needs to work only with ~modus-themes-contrast~. It accepts two color values and returns their contrast ratio. Values range from 1 to 21 (lowest to highest). The themes are designed to always be equal or higher than 7 for each combination of background and foreground that they use (this is the WCAG AAA standard---the most demanding of its kind). A couple of examples (rounded numbers): #+begin_src emacs-lisp ;; Pure white with pure green (modus-themes-contrast "#ffffff" "#00ff00") ;; => 1.37 ;; That is an outright inaccessible combo ;; Pure black with pure green (modus-themes-contrast "#000000" "#00ff00") ;; => 15.3 ;; That is a highly accessible combo #+end_src It does not matter which color value comes first. The ratio is always the same. If one does not wish to read all the decimal points, it is possible to try something like this: #+begin_src emacs-lisp (format "%0.2f" (modus-themes-contrast "#000000" "#00ff00")) #+end_src While it is fine to perform such calculations on a case-by-case basis, it is preferable to implement formulas and tables for more demanding tasks. Such instruments are provided by ~org-mode~ or ~orgtbl-mode~, both of which are built into Emacs. Below is such a table that derives the contrast ratio of all colors in the first column (pure red, green, blue) relative to the color specified in the first row of the second column (pure white) and rounds the results: #+begin_example | | #ffffff | |---------+---------| | #ff0000 | 4.00 | | #00ff00 | 1.37 | | #0000ff | 8.59 | #+tblfm: $2='(modus-themes-contrast $1 @1$2);%0.2f #+end_example To measure color contrast one needs to start from a known value. This typically is the background. The Modus themes define an expanded palette in large part because certain colors are only meant to be used in combination with some others. Consult the source code for the minutia and relevant commentary. Such knowledge may prove valuable while attempting to override some of the themes' colors: [[#h:307d95dd-8dbd-4ece-a543-10ae86f155a6][Override colors]]. ** Load theme depending on time of day (DIY) :properties: :custom_id: h:1d1ef4b4-8600-4a09-993c-6de3af0ddd26 :end: While we do provide ~modus-themes-toggle~ to manually switch between the themes, users may also set up their system to perform such a task automatically at sunrise and sunset. This can be accomplished by specifying the coordinates of one's location using the built-in {{{file(solar.el)}}} and then configuring the =circadian= package: #+begin_src emacs-lisp (use-package solar ; built-in :config (setq calendar-latitude 35.17 calendar-longitude 33.36)) (use-package circadian ; you need to install this :ensure :after solar (setq circadian-themes '((:sunrise . modus-operandi) (:sunset . modus-vivendi))) (circadian-setup)) #+end_src ** Backdrop for pdf-tools (DIY) :properties: :custom_id: h:ff69dfe1-29c0-447a-915c-b5ff7c5509cd :end: #+cindex: Remapping pdf-tools backdrop Most PDF files use a white background for their page, making it impossible to discern the file's boundaries in the buffer while using the Modus Operandi theme. To introduce a distinction between the buffer's backdrop and the PDF page's background, the former must be rendered as some shade of gray. Ideally, ~pdf-tools~ would provide a face that the themes could support directly, though this does not seem to be the case for the time being. We must thus employ the face remapping technique that is documented elsewhere in this document to change the buffer-local value of the ~default~ face. [[#h:7a93cb6f-4eca-4d56-a85c-9dcd813d6b0f][Remap face with local value]]. To remap the buffer's backdrop, we start with a function like this one: #+begin_src emacs-lisp (defun my-pdf-tools-backdrop () (face-remap-add-relative 'default `(:background ,(modus-themes-color 'bg-alt)))) (add-hook 'pdf-tools-enabled-hook #'my-pdf-tools-backdrop) #+end_src The idea is to assign that function to a hook that gets called when ~pdf-tools~ renders the document: ~pdf-tools-enabled-hook~. This is enough when you only use one theme. However it has the downside of setting the background color value only at render time. In other words, the face remapping function does not get evaluated anew whenever the theme changes, such as upon invoking {{{kbd(M-x modus-themes-toggle)}}}. To have our face remapping adapt gracefully while switching between the Modus themes, we need to also account for the current theme and control the activation of ~pdf-view-midnight-minor-mode~. To which end we arrive at something like the following, which builds on the above example: #+begin_src emacs-lisp (defun my-pdf-tools-backdrop () (face-remap-add-relative 'default `(:background ,(modus-themes-color 'bg-alt)))) (defun my-pdf-tools-midnight-mode-toggle () (when (derived-mode-p 'pdf-view-mode) (if (eq (car custom-enabled-themes) 'modus-vivendi) (pdf-view-midnight-minor-mode 1) (pdf-view-midnight-minor-mode -1)) (my-pdf-tools-backdrop))) (add-hook 'pdf-tools-enabled-hook #'my-pdf-tools-midnight-mode-toggle) (add-hook 'modus-themes-after-load-theme-hook #'my-pdf-tools-midnight-mode-toggle) #+end_src With those in place, PDFs have a distinct backdrop for their page, while they automatically switch to their dark mode when ~modus-themes-toggle~ is called from inside a buffer whose major-mode is ~pdf-view-mode~. ** A theme-agnostic hook for theme loading (DIY) :properties: :custom_id: h:86f6906b-f090-46cc-9816-1fe8aeb38776 :end: The themes are designed with the intent to be useful to Emacs users of varying skill levels, from beginners to experts. This means that we try to make things easier by not expecting anyone reading this document to be proficient in Emacs Lisp or programming in general. Such a case is with the use of the ~modus-themes-after-load-theme-hook~, which runs after ~modus-themes-toggle~, ~modus-themes-load-operandi~, or ~modus-themes-load-vivendi~ is evaluated. We recommend using that hook for advanced customizations, because (1) we know for sure that it is available once the themes are loaded, and (2) anyone consulting this manual, especially the sections on enabling and loading the themes, will be in a good position to benefit from that hook. Advanced users who have a need to switch between the Modus themes and other items will find that such a hook does not meet their requirements: it only works with the Modus themes and only with the aforementioned functions. A theme-agnostic setup can be configured thus: #+begin_src emacs-lisp (defvar after-enable-theme-hook nil "Normal hook run after enabling a theme.") (defun run-after-enable-theme-hook (&rest _args) "Run `after-enable-theme-hook'." (run-hooks 'after-enable-theme-hook)) (advice-add 'enable-theme :after #'run-after-enable-theme-hook) #+end_src This creates the ~after-enable-theme-hook~ and makes it run after each call to ~enable-theme~, which means that it will work for all themes and also has the benefit that it does not depend on functions such as ~modus-themes-toggle~ and the others mentioned above. ~enable-theme~ is called internally by ~load-theme~, so the hook works everywhere. Now this specific piece of Elisp may be simple for experienced users, but it is not easy to read for newcomers, including the author of the Modus themes for the first several months of their time as an Emacs user. Hence our hesitation to recommend it as part of the standard setup of the Modus themes (it is generally a good idea to understand what the implications are of advising a function). * Face coverage :properties: :custom_id: h:a9c8f29d-7f72-4b54-b74b-ddefe15d6a19 :end: The Modus themes try to provide as close to full face coverage as possible. This is necessary to ensure a consistently accessible reading experience across all available interfaces. ** Full support for packages or face groups :properties: :alt_title: Supported packages :description: Full list of covered face groups :custom_id: h:60ed4275-60d6-49f8-9287-9a64e54bea0e :end: #+cindex: Explicitly supported packages This list will always be updated to reflect the current state of the project. The idea is to offer an overview of the known status of all affected face groups. The items with an appended asterisk =*= tend to have lots of extensions, so the "full support" may not be 100% true… + ace-window + ag + alert + all-the-icons + annotate + ansi-color + anzu + apropos + apt-sources-list + artbollocks-mode + auctex and TeX + auto-dim-other-buffers + avy + awesome-tray + bbdb + binder + bm + bongo + boon + bookmark + breakpoint (provided by the built-in {{{file(gdb-mi.el)}}} library) + buffer-expose + calendar and diary + calfw + centaur-tabs + cfrs + change-log and log-view (such as ~vc-print-log~, ~vc-print-root-log~) + cider + circe + color-rg + column-enforce-mode + company-mode* + company-posframe + compilation-mode + completions + consult + corfu + counsel* + counsel-css + counsel-org-capture-string + cov + cperl-mode + css-mode + csv-mode + ctrlf + cursor-flash + custom (what you get with {{{kbd(M-x customize)}}}) + dap-mode + dashboard (emacs-dashboard) + deadgrep + debbugs + define-word + deft + dictionary + diff-hl + diff-mode + dim-autoload + dir-treeview + dired + dired-async + dired-git + dired-git-info + dired-narrow + dired-subtree + diredc + diredfl + diredp (dired+) + disk-usage + display-fill-column-indicator-mode + doom-modeline + dynamic-ruler + easy-jekyll + easy-kill + ebdb + ediff + eglot + el-search + eldoc-box + elfeed + elfeed-score + elpher + embark + emms + enh-ruby-mode (enhanced-ruby-mode) + epa + equake + erc + eros + ert + eshell + eshell-fringe-status + eshell-git-prompt + eshell-prompt-extras (epe) + eshell-syntax-highlighting + evil* (evil-mode) + evil-goggles + evil-snipe + evil-visual-mark-mode + eww + exwm + eyebrowse + fancy-dabbrev + flycheck + flycheck-color-mode-line + flycheck-indicator + flycheck-posframe + flymake + flyspell + flyspell-correct + flx + freeze-it + frog-menu + focus + fold-this + font-lock (generic syntax highlighting) + forge + fountain (fountain-mode) + geiser + git-commit + git-gutter (and variants) + git-lens + git-rebase + git-timemachine + git-walktree + gnus + gotest + golden-ratio-scroll-screen + helm* + helm-ls-git + helm-switch-shell + helm-xref + helpful + highlight-blocks + highlight-defined + highlight-escape-sequences (~hes-mode~) + highlight-indentation + highlight-numbers + highlight-parentheses ([[#h:24bab397-dcb2-421d-aa6e-ec5bd622b913][Note on highlight-parentheses.el]]) + highlight-symbol + highlight-tail + highlight-thing + hl-defined + hl-fill-column + hl-line-mode + hl-todo + hydra + hyperlist + ibuffer + icomplete + icomplete-vertical + ido-mode + iedit + iflipb + imenu-list + indium + info + info-colors + interaction-log + ioccur + isearch, occur, etc. + isl (isearch-light) + ivy* + ivy-posframe + jira (org-jira) + journalctl-mode + js2-mode + julia + jupyter + kaocha-runner + keycast + ledger-mode + line numbers (~display-line-numbers-mode~ and global variant) + lsp-mode + lsp-ui + macrostep + magit + magit-imerge + make-mode + man + marginalia + markdown-mode + markup-faces (~adoc-mode~) + mentor + messages + minibuffer-line + minimap + mmm-mode + mode-line + mood-line + moody + mpdel + mu4e + mu4e-conversation + multiple-cursors + neotree + no-emoji + notmuch + num3-mode + nxml-mode + objed + orderless + org* + org-journal + org-noter + org-pomodoro + org-recur + org-roam + org-superstar + org-table-sticky-header + org-tree-slide + org-treescope + origami + outline-mode + outline-minor-faces + package (what you get with {{{kbd(M-x list-packages)}}}) + page-break-lines + pandoc-mode + paradox + paren-face + parrot + pass + pdf-tools + persp-mode + perspective + phi-grep + phi-search + pkgbuild-mode + pomidor + popup + powerline + powerline-evil + prism ([[#h:a94272e0-99da-4149-9e80-11a7e67a2cf2][Note for prism.el]]) + proced + prodigy + pulse + quick-peek + racket-mode + rainbow-blocks + rainbow-identifiers + rainbow-delimiters + rcirc + recursion-indicator + regexp-builder (also known as ~re-builder~) + rg (rg.el) + ripgrep + rmail + ruler-mode + sallet + selectrum + selectrum-prescient + semantic + sesman + shell-script-mode + shortdoc + show-paren-mode + shr + side-notes + sieve-mode + skewer-mode + smart-mode-line + smartparens + smerge + solaire + spaceline + speedbar + spell-fu + spray + stripes + suggest + switch-window + swiper + swoop + sx + symbol-overlay + syslog-mode + tab-bar-groups + tab-bar-mode + tab-line-mode + table (built-in table.el) + telega + telephone-line + terraform-mode + term + tomatinho + transient (pop-up windows such as Magit's) + trashed + treemacs + tty-menu + tuareg + typescript + undo-tree + vc (vc-dir.el, vc-hooks.el) + vc-annotate (the output of {{{kbd(C-x v g)}}}) + vdiff + vertico + vimish-fold + visible-mark + visual-regexp + volatile-highlights + vterm + wcheck-mode + web-mode + wgrep + which-function-mode + which-key + whitespace-mode + window-divider-mode + winum + writegood-mode + woman + xah-elisp-mode + xref + xterm-color (and ansi-colors) + yaml-mode + yasnippet + ztree Plus many other miscellaneous faces that are provided by the upstream GNU Emacs distribution. ** Indirectly covered packages :properties: :custom_id: h:2cb359c7-3a84-4262-bab3-dcdc1d0034d7 :end: #+cindex: Implicitly supported packages These do not require any extra styles because they are configured to inherit from some basic faces or their dependencies which are directly supported by the themes. + bufler + counsel-notmuch + edit-indirect + evil-owl + fortran-mode + goggles + i3wm-config-mode + perl-mode + php-mode + rjsx-mode + side-hustle + swift-mode + tab-bar-echo-area + tide + vertico-indexed + vertico-mouse + vertico-quick * Notes on individual packages :properties: :custom_id: h:4c4d901a-84d7-4f20-bd99-0808c2b06eba :end: This section covers information that may be of interest to users of individual packages. ** Note on avy hints :properties: :custom_id: h:2fdce705-6de7-44e6-ab7f-18f59af99e01 :end: Hints can appear everywhere, in wildly varying contexts, hence, their appearance, by necessity, is a compromise. However, there are various options for making them stand out. First is dimming the surroundings: #+begin_src emacs-lisp (setq avy-background t) #+end_src Dimming works well when you find it difficult to spot hints, any hint. Second is limiting the number of faces used by hints: #+begin_src emacs-lisp (setq avy-lead-faces '(avy-lead-face avy-lead-face-1 avy-lead-face-1 avy-lead-face-1 avy-lead-face-1)) #+end_src Limiting the number of faces works well with longer hints when you find it difficult to identify individual hints, especially with hints touching each other. The first character of the hint will have an intense color, the remaining ones the same neutral color. Third is preferring commands that produce fewer candidates. Fewer hints is less noise: ~avy-goto-char-timer~ is an excellent alternative to ~avy-goto-char~. ** Note on calendar.el weekday and weekend colors :properties: :custom_id: h:b2db46fb-32f4-44fd-8e11-d2b261cf51ae :end: By default, the {{{kbd(M-x calendar)}}} interface differentiates weekdays from weekends by applying a gray color to the former and a faint red to the latter. The idea for this approach is that the weekend should serve as a subtle warning that no work is supposed to be done on that day, per the design of traditional calendars. Users who prefer all days to look the same can configure the variable ~calendar-weekend-days~ to either use gray of weekdays or the faint red of weekends uniformly. #+begin_src emacs-lisp ;; All are treated like weekdays (gray color) (setq calendar-weekend-days nil) ;; All are treated like weekends (red-faint color) (setq calendar-weekend-days (number-sequence 0 6)) ;; The default marks the Saturday and Sunday as the weekend (setq calendar-weekend-days '(0 6)) #+end_src For changes to take effect, the Calendar buffer needs to be generated anew. ** Note on underlines in compilation buffers :properties: :custom_id: h:420f5a33-c7a9-4112-9b04-eaf2cbad96bd :end: Various buffers that produce compilation results or run tests on code apply an underline to the file names they reference or to relevant messages. Users may consider this unnecessary or excessive. To outright disable the effect, use this: #+begin_src emacs-lisp (setq compilation-message-face nil) #+end_src If some element of differentiation is still desired, a good option is to render the affected text using the ~italic~ face: #+begin_src emacs-lisp (setq compilation-message-face 'italic) #+end_src [[#h:2793a224-2109-4f61-a106-721c57c01375][Configure bold and italic faces]]. ** Note on inline Latex in Org buffers :properties: :custom_id: h:dd8478da-f56a-45cd-b199-b836c85c3c5a :end: Org can work with inline latex and related syntax. To actually fontify those constructs, set the variable ~org-highlight-latex-and-related~ to the desired list of values (per its doc string). For example: #+begin_src emacs-lisp (setq org-highlight-latex-and-related '(latex script)) #+end_src Remember to use {{{kbd(M-x org-mode-restart)}}} for changes to take effect. ** Note on dimmer.el :properties: :custom_id: h:8eb4b758-d318-4480-9ead-357a571beb93 :end: The {{{file(dimmer.el)}}} library by Neil Okamoto can be configured to automatically dim the colors of inactive Emacs windows. To guarantee consistent results with the Modus themes, we suggest some tweaks to the default styles, such as in this minimal setup: #+begin_src emacs-lisp (use-package dimmer :config (setq dimmer-fraction 0.3) (setq dimmer-adjustment-mode :foreground) (setq dimmer-use-colorspace :rgb) (dimmer-mode 1)) #+end_src Of the above, we strongly recommend the RGB color space because it is the one that remains faithful to the hueness of the colors used by the themes. Whereas the default CIELAB space has a tendency to distort colors in addition to applying the dim effect, which can be somewhat disorienting. The value of the ~dimmer-fraction~ has been selected empirically. Users might prefer to tweak it further (increasing it makes the dim effect more pronounced). Changing the ~dimmer-adjustment-mode~ is a matter of preference. Though because the Modus themes use black and white as their base colors, any other value for that variable will turn the main background gray. This inadvertently leads to the opposite of the intended utility of this package: it draws too much attention to unfocused windows. ** Note on display-fill-column-indicator-mode :properties: :custom_id: h:2a602816-bc1b-45bf-9675-4cbbd7bf6cab :end: While designing the style for ~display-fill-column-indicator-mode~, we stayed close to the mode's defaults: to apply a subtle foreground color to the ~fill-column-indicator~ face, which blends well with the rest of theme and is consistent with the role of that mode. This is to not upset the expectations of users. Nevertheless, ~display-fill-column-indicator-mode~ has some known limitations pertaining to its choice of using typographic characters to draw its indicator. What should be a continuous vertical line might appear as a series of dashes in certain contexts or under specific conditions: a non-default value for ~line-spacing~, scaled and/or variable-pitch headings have been observed to cause this effect. Given that we cannot control such factors, it may be better for affected users to deviate from the default style of the ~fill-column-indicator~ face. Instead of setting a foreground color, one could use a background and have the foreground be indistinguishable from it. For example: #+begin_src emacs-lisp (modus-themes-with-colors (custom-set-faces `(fill-column-indicator ((,class :background ,bg-inactive :foreground ,bg-inactive))))) #+end_src [[#h:51ba3547-b8c8-40d6-ba5a-4586477fd4ae][Face specs at scale using the themes' palette]]. ** Note on highlight-parentheses.el :PROPERTIES: :CUSTOM_ID: h:24bab397-dcb2-421d-aa6e-ec5bd622b913 :END: The =highlight-parentheses= package provides contextual coloration of surrounding parentheses, highlighting only those which are around the point. The package expects users to customize the applicable colors on their own by configuring certain variables. To make the Modus themes work as expected with this, we need to use some of the techniques that are discussed at length in the various "Do-It-Yourself" (DIY) sections, which provide insight into the more advanced customization options of the themes. [[#h:f4651d55-8c07-46aa-b52b-bed1e53463bb][Advanced customization (do-it-yourself)]]. In the following example, we are assuming that the user wants to (i) re-use color variables provided by the themes, (ii) be able to retain their tweaks while switching between ~modus-operandi~ and ~modus-vivendi~, and (iii) have the option to highlight either the foreground of the parentheses or the background as well. We start by defining our own variable, which will serve as a toggle between foreground and background coloration styles: #+begin_src emacs-lisp (defvar my-highlight-parentheses-use-background t "Prefer `highlight-parentheses-background-colors'.") #+end_src Then we can update our preference with this: #+begin_src emacs-lisp ;; Set to nil to disable backgrounds. (setq my-highlight-parentheses-use-background nil) #+end_src To re-use colors from the themes, we must wrap our code in the ~modus-themes-with-colors~ macro. Our implementation must interface with the variables ~highlight-parentheses-background-colors~ and/or ~highlight-parentheses-colors~. So we can have something like this (the doc string of ~modus-themes-with-colors~ explains where the names of the colors can be found): #+begin_src emacs-lisp (modus-themes-with-colors ;; Our preference for setting either background or foreground ;; styles, depending on `my-highlight-parentheses-use-background'. (if my-highlight-parentheses-use-background ;; Here we set color combinations that involve both a background ;; and a foreground value. (setq highlight-parentheses-background-colors (list cyan-refine-bg magenta-refine-bg green-refine-bg yellow-refine-bg) highlight-parentheses-colors (list cyan-refine-fg magenta-refine-fg green-refine-fg yellow-refine-fg)) ;; And here we pass only foreground colors while disabling any ;; backgrounds. (setq highlight-parentheses-colors (list green-intense magenta-intense blue-intense red-intense) highlight-parentheses-background-colors nil))) ;; Include this if you also want to make the parentheses bold: (set-face-attribute 'highlight-parentheses-highlight nil :inherit 'bold) ;; Our changes must be evaluated before enabling the relevant mode, so ;; this comes last. (global-highlight-parentheses-mode 1) #+end_src For our changes to persist while switching between the Modus themes, we need to include them in a function which can then get passed to ~modus-themes-after-load-theme-hook~. This is the complete implementation: #+begin_src emacs-lisp ;; Configurations for `highlight-parentheses': (require 'highlight-parentheses) (defvar my-highlight-parentheses-use-background t "Prefer `highlight-parentheses-background-colors'.") (setq my-highlight-parentheses-use-background nil) ; Set to nil to disable backgrounds (defun my-modus-themes-highlight-parentheses () (modus-themes-with-colors ;; Our preference for setting either background or foreground ;; styles, depending on `my-highlight-parentheses-use-background'. (if my-highlight-parentheses-use-background ;; Here we set color combinations that involve both a background ;; and a foreground value. (setq highlight-parentheses-background-colors (list cyan-refine-bg magenta-refine-bg green-refine-bg yellow-refine-bg) highlight-parentheses-colors (list cyan-refine-fg magenta-refine-fg green-refine-fg yellow-refine-fg)) ;; And here we pass only foreground colors while disabling any ;; backgrounds. (setq highlight-parentheses-colors (list green-intense magenta-intense blue-intense red-intense) highlight-parentheses-background-colors nil))) ;; Include this if you also want to make the parentheses bold: (set-face-attribute 'highlight-parentheses-highlight nil :inherit 'bold) ;; Our changes must be evaluated before enabling the relevant mode, so ;; this comes last. (global-highlight-parentheses-mode 1)) (add-hook 'modus-themes-after-load-theme-hook #'my-modus-themes-highlight-parentheses) #+end_src ** Note on mmm-mode.el background colors :properties: :custom_id: h:99cf0d6c-e478-4e26-9932-3bf3427d13f6 :end: The faces used by {{{file(mmm-mode.el)}}} are expected to have a colorful background, while they should not touch any foreground value. The idea is that they must not interfere with existing fontification. Those background colors need to be distinct from each other, such as an unambiguous red juxtaposed with a clear blue. While this design may be internally consistent with the raison d'être of that library, it inevitably produces inaccessible color combinations. There are two competing goals at play: 1. Legibility of the text, understood as the contrast ratio between the background and the foreground. 2. Semantic precision of each face which entails faithfulness to color-coding of the underlying background. As the Modus themes are designed with the express purpose of conforming with the first point, we have to forgo the apparent color-coding of the background elements. Instead we use subtle colors that do not undermine the legibility of the affected text while they still offer a sense of added context. Users who might prefer to fall below the minimum 7:1 contrast ratio in relative luminance (the accessibility target we conform with), can opt to configure the relevant faces on their own. [[#h:51ba3547-b8c8-40d6-ba5a-4586477fd4ae][Face specs at scale using the themes' palette]]. This example uses more vivid background colors, though it comes at the very high cost of degraded legibility. #+begin_src emacs-lisp (modus-themes-with-colors (custom-set-faces `(mmm-cleanup-submode-face ((,class :background ,yellow-refine-bg))) `(mmm-code-submode-face ((,class :background ,bg-active))) `(mmm-comment-submode-face ((,class :background ,blue-refine-bg))) `(mmm-declaration-submode-face ((,class :background ,cyan-refine-bg))) `(mmm-default-submode-face ((,class :background ,bg-alt))) `(mmm-init-submode-face ((,class :background ,magenta-refine-bg))) `(mmm-output-submode-face ((,class :background ,red-refine-bg))) `(mmm-special-submode-face ((,class :background ,green-refine-bg))))) #+end_src ** Note on prism.el :properties: :alt_title: Note for prism :custom_id: h:a94272e0-99da-4149-9e80-11a7e67a2cf2 :end: This package by Adam Porter, aka "alphapapa" or "github-alphapapa", implements an alternative to the typical coloration of code. Instead of highlighting the syntactic constructs, it applies color to different levels of depth in the code structure. As {{{file(prism.el)}}} offers a broad range of customisations, we cannot style it directly at the theme level: that would run contrary to the spirit of the package. Instead, we may offer preset color schemes. Those should offer a starting point for users to adapt to their needs. In the following code snippets, we employ the ~modus-themes-with-colors~ macro: [[#h:51ba3547-b8c8-40d6-ba5a-4586477fd4ae][Face specs at scale using the themes' palette]]. These are the minimum recommended settings with 16 colors: #+begin_src emacs-lisp (setq prism-num-faces 16) (prism-set-colors :desaturations '(0) ; do not change---may lower the contrast ratio :lightens '(0) ; same :colors (modus-themes-with-colors (list fg-main magenta cyan-alt-other magenta-alt-other blue magenta-alt cyan-alt red-alt-other green fg-main cyan yellow blue-alt red-alt green-alt-other fg-special-warm))) #+end_src With 8 colors: #+begin_src emacs-lisp (setq prism-num-faces 8) (prism-set-colors :desaturations '(0) ; do not change---may lower the contrast ratio :lightens '(0) ; same :colors (modus-themes-with-colors (list blue magenta magenta-alt-other cyan-alt-other fg-main blue-alt red-alt-other cyan))) #+end_src And this is with 4 colors, which produces results that are the closest to the themes' default aesthetic: #+begin_src emacs-lisp (setq prism-num-faces 4) (prism-set-colors :desaturations '(0) ; do not change---may lower the contrast ratio :lightens '(0) ; same :colors (modus-themes-with-colors (list blue magenta magenta-alt-other green-alt))) #+end_src If you need to apply desaturation and lightening, you can use what the {{{file(prism.el)}}} documentation recommends, like this (adapting to the examples with the 4, 8, 16 colors): #+begin_src emacs-lisp (prism-set-colors :desaturations (cl-loop for i from 0 below 16 collect (* i 2.5)) :lightens (cl-loop for i from 0 below 16 collect (* i 2.5)) :colors (modus-themes-with-colors (list fg-main cyan-alt-other magenta-alt-other magenta))) #+end_src ** Note on god-mode.el :properties: :alt_title: Note for god-mode :custom_id: h:4da1d515-3e05-47ef-9e45-8251fc7e986a :end: The ~god-mode~ library does not provide faces that could be configured by the Modus themes. Users who would like to get some visual feedback on the status of {{{kbd(M-x god-mode)}}} are instead encouraged by upstream to set up their own configurations, such as by changing the ~mode-line~ face ([[#h:f4651d55-8c07-46aa-b52b-bed1e53463bb][Advanced customization (do-it-yourself)]]). This is an adaptation of the approach followed in the upstream README: #+begin_src emacs-lisp (defun my-god-mode-update-mode-line () "Make `mode-line' blue if God local mode is active." (modus-themes-with-colors (if god-local-mode (set-face-attribute 'mode-line nil :foreground blue-active :background bg-active-accent :box blue) (set-face-attribute 'mode-line nil :foreground fg-active :background bg-active :box fg-alt)))) (add-hook 'post-command-hook 'my-god-mode-update-mode-line) #+end_src We employ the ~modus-themes-with-colors~ which provides access to color variables defined by the active theme. Its use is covered elsewhere in this manual ([[#h:51ba3547-b8c8-40d6-ba5a-4586477fd4ae][Face specs at scale using the themes' palette]]). As for the attributes that can be passed to each face, start by consulting the documentation string of ~set-face-attribute~. ** Note on company-mode overlay pop-up :properties: :custom_id: h:20cef8c4-d11f-4053-8b2c-2872925780b1 :end: By default, the ~company-mode~ pop-up that lists completion candidates is drawn using an overlay. This creates alignment issues every time it is placed above a piece of text that has a different height than the default. The solution recommended by the project's maintainer is to use an alternative front-end for drawing the pop-up which draws child frames instead of overlays.[fn:: https://github.com/company-mode/company-mode/issues/1010][fn:: https://github.com/tumashu/company-posframe/] ** Note on ERC escaped color sequences :properties: :custom_id: h:98bdf319-1e32-4469-8a01-771200fba65c :end: The built-in IRC client ~erc~ has the ability to colorise any text using escape sequences that start with =^C= (inserted with {{{kbd(C-q C-c)}}}) and are followed by a number for the foreground and background.[fn:: This page explains the basics, though it is not specific to Emacs: https://www.mirc.com/colors.html] Possible numbers are 0-15, with the first entry being the foreground and the second the background, separated by a comma. Like this =^C1,6=. The minimum setup is this: #+begin_src emacs-lisp (add-to-list 'erc-modules 'irccontrols) (setq erc-interpret-controls-p t erc-interpret-mirc-color t) #+end_src As this allows users the chance to make arbitrary combinations, it is impossible to guarantee a consistently high contrast ratio. All we can we do is provide guidance on the combinations that satisfy the accessibility standard of the themes: + Modus Operandi :: Use foreground color 1 for all backgrounds from 2-15. Like so: {{{kbd(C-q C-c1,N)}}} where =N= is the background. + Modus Vivendi :: Use foreground color 0 for all backgrounds from 2-13. Use foreground =1= for backgrounds 14, 15. Colors 0 and 1 are white and black respectively. So combine them together, if you must. ** Note on powerline or spaceline :properties: :custom_id: h:9130a8ba-d8e3-41be-a58b-3cb1eb7b6d17 :end: Both Powerline and Spaceline package users will likely need to use the command ~powerline-reset~ whenever they make changes to their themes and/or mode line setup. ** Note on SHR colors :properties: :custom_id: h:4cc767dc-ffef-4c5c-9f10-82eb7b8921bf :end: Emacs' HTML rendering library ({{{file(shr.el)}}}) may need explicit configuration to respect the theme's colors instead of whatever specifications the webpage provides. Consult {{{kbd(C-h v shr-use-colors)}}}. ** Note on EWW and Elfeed fonts (SHR fonts) :properties: :custom_id: h:e6c5451f-6763-4be7-8fdb-b4706a422a4c :end: EWW and Elfeed rely on the Simple HTML Renderer to display their content. The {{{file(shr.el)}}} library contains the variable ~shr-use-fonts~ that controls whether the text in the buffer is set to a ~variable-pitch~ typeface (proportionately spaced) or if just retains whatever the default font family is. Its default value is non-nil, which means that ~variable-pitch~ is applied. [[#h:defcf4fc-8fa8-4c29-b12e-7119582cc929][Font configurations for Org and others]]. ** Note on Helm grep :properties: :custom_id: h:d28879a2-8e4b-4525-986e-14c0f873d229 :end: There is one face from the Helm package that is meant to highlight the matches of a grep or grep-like command (=ag= or =ripgrep=). It is ~helm-grep-match~. However, this face can only apply when the user does not pass =--color=always= as a command-line option for their command. Here is the docstring for that face, which is defined in the {{{file(helm-grep.el)}}} library (you can always visit the source code with {{{kbd(M-x find-library)}}}). #+begin_quote Face used to highlight grep matches. Have no effect when grep backend use "--color=" #+end_quote The user must either remove =--color= from the flags passed to the grep function, or explicitly use =--color=never= (or equivalent). Helm provides user-facing customization options for controlling the grep function's parameters, such as ~helm-grep-default-command~ and ~helm-grep-git-grep-command~. When =--color=always= is in effect, the grep output will use red text in bold letter forms to present the matching part in the list of candidates. That style still meets the contrast ratio target of >= 7:1 (accessibility standard WCAG AAA), because it draws the reference to ANSI color number 1 (red) from the already-supported array of ~ansi-color-names-vector~. ** Note on vc-annotate-background-mode :properties: :custom_id: h:5095cbd1-e17a-419c-93e8-951c186362a3 :end: Due to the unique way ~vc-annotate~ ({{{kbd(C-x v g)}}}) applies colors, support for its background mode (~vc-annotate-background-mode~) is disabled at the theme level. Normally, such a drastic measure should not belong in a theme: assuming the user's preferences is bad practice. However, it has been deemed necessary in the interest of preserving color contrast accessibility while still supporting a useful built-in tool. If there actually is a way to avoid such a course of action, without prejudice to the accessibility standard of this project, then please report as much or send patches ([[#h:9c3cd842-14b7-44d7-84b2-a5c8bc3fc3b1][Contributing]]). ** Note on pdf-tools link hints :properties: :custom_id: h:2659d13e-b1a5-416c-9a89-7c3ce3a76574 :end: Hints are drawn by [[https://imagemagick.org/][ImageMagick]], not Emacs, i.e., ImageMagick doesn't know about the hint face unless you tell ImageMagick about it. By default, only the foreground and background color attributes are passed. The below snippet adds to those the various font attributes. As it queries various faces, specifically ~pdf-links-read-link~ and the faces it inherits, it needs to be added to your initialization file after you've customized any faces. #+begin_src emacs-lisp (use-package pdf-links :config (let ((spec (apply #'append (mapcar (lambda (name) (list name (face-attribute 'pdf-links-read-link name nil 'default))) '(:family :width :weight :slant))))) (setq pdf-links-read-link-convert-commands `("-density" "96" "-family" ,(plist-get spec :family) "-stretch" ,(let* ((width (plist-get spec :width)) (name (symbol-name width))) (replace-regexp-in-string "-" "" (capitalize name))) "-weight" ,(pcase (plist-get spec :weight) ('ultra-light "Thin") ('extra-light "ExtraLight") ('light "Light") ('semi-bold "SemiBold") ('bold "Bold") ('extra-bold "ExtraBold") ('ultra-bold "Black") (_weight "Normal")) "-style" ,(pcase (plist-get spec :slant) ('italic "Italic") ('oblique "Oblique") (_slant "Normal")) "-pointsize" "%P" "-undercolor" "%f" "-fill" "%b" "-draw" "text %X,%Y '%c'")))) #+end_src * Frequently Asked Questions (FAQ) :properties: :custom_id: h:b3384767-30d3-4484-ba7f-081729f03a47 :end: #+cindex: Frequently Asked Questions (FAQ) In this section we provide answers related to some aspects of the Modus themes' design and application. ** Is the contrast ratio about adjacent colors? :properties: :custom_id: h:5ce7ae2e-9348-4e55-b4cf-9302345b1826 :end: #+cindex: Contrast between adjacent colors The minimum contrast ratio in relative luminance that the themes conform with always refers to any given combination of background and foreground colors. If we have some blue colored text next to a magenta one, both against a white background, we do not mean to imply that blue:magenta is 7:1 in terms of relative luminance. Rather, we state that blue:white and magenta:white each are 7:1 or higher. The point of reference is always the background. Because colors have about the same minimum distance in luminance from their backdrop, they necessarily are fairly close to each other in this measure. A possible blue:magenta combination would naturally be around 1:1 in contrast of the sort here considered. To differentiate between sequential colors, we rely on hueness by mapping contrasting hues to adjacent constructs, while avoiding exaggerations. A blue next to a magenta can be told apart regardless of their respective contrast ratio against their common background. Exceptions would be tiny characters in arguably not so realistic cases, such as two dots drawn side-by-side which for some reason would need to be colored differently. They would still be legible though, which is the primary objective of the Modus themes. ** What does it mean to avoid exaggerations? :properties: :custom_id: h:44284e1f-fab8-4c4f-92f0-544728a7c91e :end: #+cindex: Avoiding exaggerations in design The Modus themes are designed with restraint, so that their default looks do not overdo it with the application of color. [[#h:bf1c82f2-46c7-4eb2-ad00-dd11fdd8b53f][Customization Options]]. This is the non-quantifiable aspect of the themes' design: the artistic part, if you will. There are a lot of cases where color can be used inconsiderately, without accounting for layout, typographic, or other properties of the presentation. For example, two headings with distinct markers, such as leading asterisks in Org buffers, do not have to have highly contrasting hues between them in order to be told apart: the added element of contrast in hueness does not contribute significantly more to the distinction between the headings than colors whose hues are relatively closer to each other in the color space. Exaggerations can be hard to anticipate or identify. Multiple shades of blue and magenta in the same context may not seem optimal: one might think that it would be better to use highly contrasting hues to ensure that all colors stand out, such as by placing blue next to yellow, next to magenta, and green. That would, however, be a case of design for its own sake; a case where color is being applied without consideration of its end results in the given context. Too many contrasting hues in close proximity force an erratic rate to how the eye jumps from one piece of text to the next. Whereas multiple shades of, say, blue and magenta can suffice to tell things apart and avoid excess coloration: a harmonious rhythm. ** Why are colors mostly variants of blue, magenta, cyan? :properties: :custom_id: h:0b26cb47-9733-4cb1-87d9-50850cb0386e :end: #+cindex: Innate color qualities of the palette Due to the innate properties of color, some options are better than others for the accessibility purposes of the themes, the stylistic consistency between ~modus-operandi~ and ~modus-vivendi~, and the avoidance of exaggerations in design. [[#h:44284e1f-fab8-4c4f-92f0-544728a7c91e][What does it mean to avoid exaggerations?]] What we describe as color is a function of three distinct channels of light: red, green, blue. In hexadecimal RGB notation, a color value is read as three pairs of red, green, and blue light: =#RRGGBB=. Of those three, the most luminant is green, while the least luminant is blue. The three basic colors represent each of the channels of light. They can be intermixed to give us six colors: red and green derive yellow, green and blue make cyan, red and blue turn into magenta. We can test the luminance of each of those against white and black to get a sense of how not all colors are equally good for accessibility (white is =#ffffff=, which means that all three light channels are fully luminated, while black is =#000000= meaning that no light is present (notwithstanding display technology)). #+begin_example | Name | | #ffffff | #000000 | |---------+---------+---------+---------| | red | #ff0000 | 4.00 | 5.25 | | yellow | #ffff00 | 1.07 | 19.56 | | green | #00ff00 | 1.37 | 15.30 | | cyan | #00ffff | 1.25 | 16.75 | | blue | #0000ff | 8.59 | 2.44 | | magenta | #ff00ff | 3.14 | 6.70 | #+end_example [[#h:02e25930-e71a-493d-828a-8907fc80f874][Measure color contrast]]. By reading this table we learn that every color that has a high level of green light (green, yellow, cyan) is virtually unreadable against a white background and, conversely, can be easily read against black. We can then infer that red and blue, in different combinations, with green acting as calibrator for luminance, will give us fairly moderate colors that pass the 7:1 target. Blue with a bit of green produce appropriate variants of cyan. Similarly, blue combined with some red and hints of green give us suitable shades of purple. Due to the need of maintaining some difference in hueness between adjacent colors, it is not possible to make red, green, and yellow the primary colors, because blue could not be used to control their luminance and, thus the relevant space would shrink considerably. [[#h:5ce7ae2e-9348-4e55-b4cf-9302345b1826][Is the contrast ratio about adjacent colors?]] This phenomenon is best illustrated by the following table that measures the relative luminance of shades of red, yellow, magenta against white: #+begin_example | | #ffffff | |---------+---------| | #990000 | 8.92 | | #995500 | 5.75 | | #990099 | 7.46 | #+end_example We notice that equal values of red and blue light in =#990099= (magenta shade) do not lead to a considerable change in luminance compared with =#990000= (red variant). Whereas less amount of green light in =#995500= leads to a major drop in luminance relative to white. It follows that using the green channel of light to calibrate the luminance of colors is more effective than trying to do the same with either red or blue (the latter is the least effective in that regard). When we need to work with several colors, it is always better to have sufficient manoeuvring space, especially since we cannot pick arbitrary colors but only those that satisfy the accessibility objectives of the themes. As for why we do not mostly use green, yellow, cyan for the dark theme, it is because those colors are far more luminant than their counterparts on the other side of the spectrum, so to ensure that they all have about the same contrast ratios we would have to alter their hueness considerably. In short, the effect would not be optimal as it would lead to exaggerations. Plus, it would make ~modus-vivendi~ look completely different than ~modus-operandi~, to the effect that the two could not be properly considered part of the same project. ** What is the best setup for legibility? :properties: :custom_id: h:f60cc2ae-129d-47c0-9849-4f6bbd87d8be :end: #+cindex: General setup for readability The Modus themes can be conceptually simplified as combinations of color values that account for relative luminance and inner harmony. Those qualities do not guarantee that every end-user will have the same experience, due to differences between people, but also because of variances in hardware capabilities and configurations. For the purposes of this document, we may only provide suggestions pertaining to the latter case. ~modus-operandi~ is best used outdoors or in a room that either gets direct sunlight or has plenty of light. Whereas ~modus-vivendi~ works better when there is not a lot of sunshine or the room has a source of light that is preferably a faint and/or warm one. It is possible to use ~modus-operandi~ at night and ~modus-vivendi~ during the day, though that will depend on several variables, such as one's overall perception of color, the paint on the walls and how that contributes to the impression of lightness in the room, the sense of space within the eye's peripheral vision, hardware specifications, and environmental factors. In general, an additional source of light other than that of the monitor can help reduce eye strain: the eyes are more relaxed when they do not have to focus on one point to gather light. The monitor's display settings must be accounted for. Gamma values, in particular, need to be calibrated to neither amplify nor distort the perception of black. Same principle for sharpness, brightness, and contrast as determined by the hardware, which all have an effect on how text is read on the screen. There are software level methods on offer, such as the XrandR utility for the X Window System (X.org), which can make gamma corrections for each of the three channels of light (red, green, blue). For example: : xrandr --output LVDS1 --brightness 1.0 --gamma 0.76:0.75:0.68 Typography is another variable. Some font families are blurry at small point sizes. Others may have a regular weight that is lighter (thiner) than that of their peers which may, under certain circumstances, cause a halo effect around each glyph. The gist is that legibility cannot be fully solved at the theme level. The color combinations may have been optimized for accessibility, though the remaining contributing factors in each case need to be considered in full. * Contributing :properties: :custom_id: h:9c3cd842-14b7-44d7-84b2-a5c8bc3fc3b1 :end: This section documents the canonical sources of the themes and the ways in which you can contribute to their ongoing development. ** Sources of the themes :properties: :custom_id: h:89504f1c-c9a1-4bd9-ab39-78fd0eddb47c :end: #+cindex: Sources of the themes The ~modus-operandi~ and ~modus-vivendi~ themes are built into Emacs 28. The source code of the themes is [[https://gitlab.com/protesilaos/modus-themes/][available on Gitlab]], for the time being. A [[https://github.com/protesilaos/modus-themes/][mirror on Github]] is also on offer. An HTML version of this manual is provided as an extension of the [[https://protesilaos.com/modus-themes/][author's personal website]] (does not rely on any non-free code). ** Issues you can help with :properties: :custom_id: h:6536c8d5-3f98-43ab-a787-b94120e735e8 :end: #+cindex: Contributing A few tasks you can help with: + Suggest refinements to packages that are covered. + Report packages not covered thus far. + Report bugs, inconsistencies, shortcomings. + Help expand the documentation of covered-but-not-styled packages. + Suggest refinements to the color palette. + Help expand this document or any other piece of documentation. + Merge requests for code refinements. [[#h:111773e2-f26f-4b68-8c4f-9794ca6b9633][Patches require copyright assignment to the FSF]]. It is preferable that your feedback includes some screenshots, GIFs, or short videos, as well as further instructions to reproduce a given setup. Though this is not a requirement. Whatever you do, bear in mind the overarching objective of the Modus themes: to keep a contrast ratio that is greater or equal to 7:1 between background and foreground colors. If a compromise is ever necessary between aesthetics and accessibility, it shall always be made in the interest of the latter. ** Patches require copyright assignment to the FSF :properties: :custom_id: h:111773e2-f26f-4b68-8c4f-9794ca6b9633 :end: Code contributions are most welcome. For any major edit (more than 15 lines, or so, in aggregate per person), you need to make a copyright assignment to the Free Software Foundation. This is necessary because the themes are part of the upstream Emacs distribution: the FSF must at all times be in a position to enforce the GNU General Public License. Copyright assignment is a simple process. Check the request form below (please adapt it accordingly). You must write an email to the address mentioned in the form and then wait for the FSF to send you a legal agreement. Sign the document and file it back to them. This could all happen via email and take about a week. You are encouraged to go through this process. You only need to do it once. It will allow you to make contributions to Emacs in general. #+begin_example text Please email the following information to assign@gnu.org, and we will send you the assignment form for your past and future changes. Please use your full legal name (in ASCII characters) as the subject line of the message. ---------------------------------------------------------------------- REQUEST: SEND FORM FOR PAST AND FUTURE CHANGES [What is the name of the program or package you're contributing to?] GNU Emacs [Did you copy any files or text written by someone else in these changes? Even if that material is free software, we need to know about it.] Copied a few snippets from the same files I edited. Their author, Protesilaos Stavrou, has already assigned copyright to the Free Software Foundation. [Do you have an employer who might have a basis to claim to own your changes? Do you attend a school which might make such a claim?] [For the copyright registration, what country are you a citizen of?] [What year were you born?] [Please write your email address here.] [Please write your postal address here.] [Which files have you changed so far, and which new files have you written so far?] #+end_example * Acknowledgements :properties: :custom_id: h:95c3da23-217f-404e-b5f3-56c75760ebcf :end: #+cindex: Contributors The Modus themes are a collective effort. Every bit of work matters. + Author/maintainer :: Protesilaos Stavrou. + Contributions to code or documentation :: Anders Johansson, Basil L.{{{space()}}} Contovounesios, Carlo Zancanaro, Eli Zaretskii, Fritz Grabo, Kévin Le Gouguec, Kostadin Ninev, Madhavan Krishnan, Markus Beppler, Matthew Stevenson, Mauro Aranda, Nicolas De Jaeghere, Philip Kaludercic, Rudolf Adamkovič, Stephen Gildea, Shreyas Ragavan, Stefan Kangas, Vincent Murphy, Xinglu Chen. + Ideas and user feedback :: Aaron Jensen, Adam Porter, Adam Spiers, Adrian Manea, Alex Griffin, Alex Peitsinis, Alexey Shmalko, Alok Singh, Anders Johansson, André Alexandre Gomes, Arif Rezai, Basil L.{{{space()}}} Contovounesios, Burgess Chang, Christian Tietze, Christopher Dimech, Damien Cassou, Daniel Mendler, Dario Gjorgjevski, David Edmondson, Davor Rotim, Divan Santana, Eliraz Kedmi, Emanuele Michele Alberto Monterosso, Farasha Euker, Feng Shu, Gautier Ponsinet, Gerry Agbobada, Gianluca Recchia, Gustavo Barros, Hörmetjan Yiltiz, Ilja Kocken, Iris Garcia, Jeremy Friesen, Jerry Zhang, John Haman, Joshua O'Connor, Kevin Fleming, Kévin Le Gouguec, Kostadin Ninev, Len Trigg, Manuel Uberti, Mark Burton, Markus Beppler, Mauro Aranda, Michael Goldenberg, Morgan Smith, Murilo Pereira, Nicky van Foreest, Nicolas De Jaeghere, Paul Poloskov, Pengji Zhang, Pete Kazmier, Peter Wu, Philip Kaludercic, Pierre Téchoueyres, Roman Rudakov, Ryan Phillips, Rudolf Adamkovič, Sam Kleinman, Shreyas Ragavan, Simon Pugnet, Tassilo Horn, Thibaut Verron, Thomas Heartman, Trey Merkley, Togan Muftuoglu, Toon Claes, Uri Sharf, Utkarsh Singh, Vincent Foley. As well as users: Ben, CsBigDataHub1, Emacs Contrib, Eugene, Fourchaux, Fredrik, Moesasji, Nick, TheBlob42, Trey, bepolymathe, doolio, fleimgruber, iSeeU, jixiuf, okamsn, pRot0ta1p. + Packaging :: Basil L.{{{space()}}} Contovounesios, Eli Zaretskii, Glenn Morris, Mauro Aranda, Richard Stallman, Stefan Kangas (core Emacs), Stefan Monnier (GNU Elpa), André Alexandre Gomes, Dimakakos Dimos, Morgan Smith, Nicolas Goaziou (Guix), Dhavan Vaidya (Debian). + Inspiration for certain features :: Bozhidar Batsov (zenburn-theme), Fabrice Niessen (leuven-theme). Special thanks, in no particular order, to Manuel Uberti, Gustavo Barros, and Omar Antolín Camarena for their long time contributions and insightful commentary. * Meta :properties: :custom_id: h:13752581-4378-478c-af17-165b6e76bc1b :end: #+cindex: Development notes If you are curious about the principles that govern the development of this project read the essay [[https://protesilaos.com/codelog/2020-03-17-design-modus-themes-emacs/][On the design of the Modus themes]] (2020-03-17). Here are some more publications for those interested in the kind of work that goes into this project (sometimes the commits also include details of this sort): + [[https://protesilaos.com/codelog/2020-05-10-modus-operandi-palette-review/][Modus Operandi theme subtle palette review]] (2020-05-10) + [[https://protesilaos.com/codelog/2020-06-13-modus-vivendi-palette-review/][Modus Vivendi theme subtle palette review]] (2020-06-13) + [[https://protesilaos.com/codelog/2020-07-04-modus-themes-faint-colours/][Modus themes: new "faint syntax" option]] (2020-07-04) + [[https://protesilaos.com/codelog/2020-07-08-modus-themes-nuanced-colours/][Modus themes: major review of "nuanced" colours]] (2020-07-08) + [[https://protesilaos.com/codelog/2020-09-14-modus-themes-review-blues/][Modus themes: review of blue colours]] (2020-09-14) + [[https://protesilaos.com/codelog/2020-12-27-modus-themes-review-rainbow-delimiters/][Modus themes: review rainbow-delimiters faces]] (2020-12-27) + [[https://protesilaos.com/codelog/2021-01-11-modus-themes-review-select-faint-colours/][Modus themes: review of select "faint" colours]] (2021-01-11) + [[https://protesilaos.com/codelog/2021-02-25-modus-themes-diffs-deuteranopia/][The Modus themes now cover deuteranopia in diffs]] (2021-02-25) + [[https://protesilaos.com/codelog/2021-06-02-modus-themes-org-agenda/][Introducing the variable modus-themes-org-agenda]] (2021-06-02) And here are the canonical sources of this project's documentation: + Manual :: + Change Log :: + Screenshots :: * GNU Free Documentation License :properties: :appendix: t :custom_id: h:3077c3d2-7f90-4228-8f0a-73124f4026f6 :end: #+texinfo: @include doclicense.texi #+begin_export html 

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   Document (all of its principal authors, if it has fewer than five),
   unless they release you from this requirement.
C. State on the Title page the name of the publisher of the
   Modified Version, as the publisher.
D. Preserve all the copyright notices of the Document.
E. Add an appropriate copyright notice for your modifications
   adjacent to the other copyright notices.
F. Include, immediately after the copyright notices, a license notice
   giving the public permission to use the Modified Version under the
   terms of this License, in the form shown in the Addendum below.
G. Preserve in that license notice the full lists of Invariant Sections
   and required Cover Texts given in the Document's license notice.
H. Include an unaltered copy of this License.
I. Preserve the section Entitled "History", Preserve its Title, and add
   to it an item stating at least the title, year, new authors, and
   publisher of the Modified Version as given on the Title Page.  If
   there is no section Entitled "History" in the Document, create one
   stating the title, year, authors, and publisher of the Document as
   given on its Title Page, then add an item describing the Modified
   Version as stated in the previous sentence.
J. Preserve the network location, if any, given in the Document for
   public access to a Transparent copy of the Document, and likewise
   the network locations given in the Document for previous versions
   it was based on.  These may be placed in the "History" section.
   You may omit a network location for a work that was published at
   least four years before the Document itself, or if the original
   publisher of the version it refers to gives permission.
K. For any section Entitled "Acknowledgements" or "Dedications",
   Preserve the Title of the section, and preserve in the section all
   the substance and tone of each of the contributor acknowledgements
   and/or dedications given therein.
L. Preserve all the Invariant Sections of the Document,
   unaltered in their text and in their titles.  Section numbers
   or the equivalent are not considered part of the section titles.
M. Delete any section Entitled "Endorsements".  Such a section
   may not be included in the Modified Version.
N. Do not retitle any existing section to be Entitled "Endorsements"
   or to conflict in title with any Invariant Section.
O. Preserve any Warranty Disclaimers.

If the Modified Version includes new front-matter sections or
appendices that qualify as Secondary Sections and contain no material
copied from the Document, you may at your option designate some or all
of these sections as invariant.  To do this, add their titles to the
list of Invariant Sections in the Modified Version's license notice.
These titles must be distinct from any other section titles.

You may add a section Entitled "Endorsements", provided it contains
nothing but endorsements of your Modified Version by various
parties--for example, statements of peer review or that the text has
been approved by an organization as the authoritative definition of a
standard.

You may add a passage of up to five words as a Front-Cover Text, and a
passage of up to 25 words as a Back-Cover Text, to the end of the list
of Cover Texts in the Modified Version.  Only one passage of
Front-Cover Text and one of Back-Cover Text may be added by (or
through arrangements made by) any one entity.  If the Document already
includes a cover text for the same cover, previously added by you or
by arrangement made by the same entity you are acting on behalf of,
you may not add another; but you may replace the old one, on explicit
permission from the previous publisher that added the old one.

The author(s) and publisher(s) of the Document do not by this License
give permission to use their names for publicity for or to assert or
imply endorsement of any Modified Version.


5. COMBINING DOCUMENTS

You may combine the Document with other documents released under this
License, under the terms defined in section 4 above for modified
versions, provided that you include in the combination all of the
Invariant Sections of all of the original documents, unmodified, and
list them all as Invariant Sections of your combined work in its
license notice, and that you preserve all their Warranty Disclaimers.

The combined work need only contain one copy of this License, and
multiple identical Invariant Sections may be replaced with a single
copy.  If there are multiple Invariant Sections with the same name but
different contents, make the title of each such section unique by
adding at the end of it, in parentheses, the name of the original
author or publisher of that section if known, or else a unique number.
Make the same adjustment to the section titles in the list of
Invariant Sections in the license notice of the combined work.

In the combination, you must combine any sections Entitled "History"
in the various original documents, forming one section Entitled
"History"; likewise combine any sections Entitled "Acknowledgements",
and any sections Entitled "Dedications".  You must delete all sections
Entitled "Endorsements".


6. COLLECTIONS OF DOCUMENTS

You may make a collection consisting of the Document and other
documents released under this License, and replace the individual
copies of this License in the various documents with a single copy
that is included in the collection, provided that you follow the rules
of this License for verbatim copying of each of the documents in all
other respects.

You may extract a single document from such a collection, and
distribute it individually under this License, provided you insert a
copy of this License into the extracted document, and follow this
License in all other respects regarding verbatim copying of that
document.


7. AGGREGATION WITH INDEPENDENT WORKS

A compilation of the Document or its derivatives with other separate
and independent documents or works, in or on a volume of a storage or
distribution medium, is called an "aggregate" if the copyright
resulting from the compilation is not used to limit the legal rights
of the compilation's users beyond what the individual works permit.
When the Document is included in an aggregate, this License does not
apply to the other works in the aggregate which are not themselves
derivative works of the Document.

If the Cover Text requirement of section 3 is applicable to these
copies of the Document, then if the Document is less than one half of
the entire aggregate, the Document's Cover Texts may be placed on
covers that bracket the Document within the aggregate, or the
electronic equivalent of covers if the Document is in electronic form.
Otherwise they must appear on printed covers that bracket the whole
aggregate.


8. TRANSLATION

Translation is considered a kind of modification, so you may
distribute translations of the Document under the terms of section 4.
Replacing Invariant Sections with translations requires special
permission from their copyright holders, but you may include
translations of some or all Invariant Sections in addition to the
original versions of these Invariant Sections.  You may include a
translation of this License, and all the license notices in the
Document, and any Warranty Disclaimers, provided that you also include
the original English version of this License and the original versions
of those notices and disclaimers.  In case of a disagreement between
the translation and the original version of this License or a notice
or disclaimer, the original version will prevail.

If a section in the Document is Entitled "Acknowledgements",
"Dedications", or "History", the requirement (section 4) to Preserve
its Title (section 1) will typically require changing the actual
title.


9. TERMINATION

You may not copy, modify, sublicense, or distribute the Document
except as expressly provided under this License.  Any attempt
otherwise to copy, modify, sublicense, or distribute it is void, and
will automatically terminate your rights under this License.

However, if you cease all violation of this License, then your license
from a particular copyright holder is reinstated (a) provisionally,
unless and until the copyright holder explicitly and finally
terminates your license, and (b) permanently, if the copyright holder
fails to notify you of the violation by some reasonable means prior to
60 days after the cessation.

Moreover, your license from a particular copyright holder is
reinstated permanently if the copyright holder notifies you of the
violation by some reasonable means, this is the first time you have
received notice of violation of this License (for any work) from that
copyright holder, and you cure the violation prior to 30 days after
your receipt of the notice.

Termination of your rights under this section does not terminate the
licenses of parties who have received copies or rights from you under
this License.  If your rights have been terminated and not permanently
reinstated, receipt of a copy of some or all of the same material does
not give you any rights to use it.


10. FUTURE REVISIONS OF THIS LICENSE

The Free Software Foundation may publish new, revised versions of the
GNU Free Documentation License from time to time.  Such new versions
will be similar in spirit to the present version, but may differ in
detail to address new problems or concerns.  See
https://www.gnu.org/licenses/.

Each version of the License is given a distinguishing version number.
If the Document specifies that a particular numbered version of this
License "or any later version" applies to it, you have the option of
following the terms and conditions either of that specified version or
of any later version that has been published (not as a draft) by the
Free Software Foundation.  If the Document does not specify a version
number of this License, you may choose any version ever published (not
as a draft) by the Free Software Foundation.  If the Document
specifies that a proxy can decide which future versions of this
License can be used, that proxy's public statement of acceptance of a
version permanently authorizes you to choose that version for the
Document.

11. RELICENSING

"Massive Multiauthor Collaboration Site" (or "MMC Site") means any
World Wide Web server that publishes copyrightable works and also
provides prominent facilities for anybody to edit those works.  A
public wiki that anybody can edit is an example of such a server.  A
"Massive Multiauthor Collaboration" (or "MMC") contained in the site
means any set of copyrightable works thus published on the MMC site.

"CC-BY-SA" means the Creative Commons Attribution-Share Alike 3.0
license published by Creative Commons Corporation, a not-for-profit
corporation with a principal place of business in San Francisco,
California, as well as future copyleft versions of that license
published by that same organization.

"Incorporate" means to publish or republish a Document, in whole or in
part, as part of another Document.

An MMC is "eligible for relicensing" if it is licensed under this
License, and if all works that were first published under this License
somewhere other than this MMC, and subsequently incorporated in whole or
in part into the MMC, (1) had no cover texts or invariant sections, and
(2) were thus incorporated prior to November 1, 2008.

The operator of an MMC Site may republish an MMC contained in the site
under CC-BY-SA on the same site at any time before August 1, 2009,
provided the MMC is eligible for relicensing.


ADDENDUM: How to use this License for your documents

To use this License in a document you have written, include a copy of
the License in the document and put the following copyright and
license notices just after the title page:

    Copyright (c)  YEAR  YOUR NAME.
    Permission is granted to copy, distribute and/or modify this document
    under the terms of the GNU Free Documentation License, Version 1.3
    or any later version published by the Free Software Foundation;
    with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts.
    A copy of the license is included in the section entitled "GNU
    Free Documentation License".

If you have Invariant Sections, Front-Cover Texts and Back-Cover Texts,
replace the "with...Texts." line with this:

    with the Invariant Sections being LIST THEIR TITLES, with the
    Front-Cover Texts being LIST, and with the Back-Cover Texts being LIST.

If you have Invariant Sections without Cover Texts, or some other
combination of the three, merge those two alternatives to suit the
situation.

If your document contains nontrivial examples of program code, we
recommend releasing these examples in parallel under your choice of
free software license, such as the GNU General Public License,
to permit their use in free software.
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