* Separating colour and positioning functioning
@ 2021-02-08 15:02 Christopher Dimech
2021-02-08 21:37 ` Emanuel Berg via Users list for the GNU Emacs text editor
0 siblings, 1 reply; 6+ messages in thread
From: Christopher Dimech @ 2021-02-08 15:02 UTC (permalink / raw)
To: Help Gnu Emacs
Have written a minor mode with part of the the code below and want to
modify tex-typeface-crucible so that the colour scheme is enabled when
the minor-mode is on.
Then one can apply supinf as an option
(defface colour-tex-cruc
'( (default :inherit bold)
( ((class color) (min-colors 88) (background light))
:foreground "#FF0000" )
( ((class color) (min-colors 88) (background dark))
:foreground "#FF0000")
(t :inherit font-lock-builtin-face) )
"Typeface for tex keywords.")
(defconst crucible-tex-keywords
`( (,(rx "\\" word-start (group (or "alpha" "beta")) word-end)
(1 'colour-tex-cruc)) )
"Fontification for letters and symbols.")
(defun supinf-disable-cruc (beg end)
"Set typeface for text between BEG and END."
(font-lock-default-unfontify-region beg end)
(while (< beg end)
(let ((next (next-single-property-change beg 'display nil end))
(prop (get-text-property beg 'display)))
(if (and (eq (car-safe prop) 'raise)
(member (car-safe (cdr prop)) crucible-supinf-vshift)
(null (cddr prop)))
(put-text-property beg next 'display nil))
(setq beg next))))
(defun tex-typeface-crucible ()
"Font-lock setup for mathematical symbols."
(font-lock-flush (point-min) (point-max))
(if crucible-supinf-enable
(progn
(font-lock-add-keywords nil crucible-tex-keywords t)
(font-lock-add-keywords nil supinf-font-lock-cruc t))
(font-lock-remove-keywords nil crucible-tex-keywords)
(supinf-disable-cruc (point-min) (point-max)))
(font-lock-flush (point-min) (point-max)))
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Separating colour and positioning functioning
2021-02-08 15:02 Separating colour and positioning functioning Christopher Dimech
@ 2021-02-08 21:37 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-02-09 0:20 ` Christopher Dimech
2021-02-09 0:27 ` Christopher Dimech
0 siblings, 2 replies; 6+ messages in thread
From: Emanuel Berg via Users list for the GNU Emacs text editor @ 2021-02-08 21:37 UTC (permalink / raw)
To: help-gnu-emacs
Christopher Dimech wrote:
> Have written a minor mode with part of the the code below
> and want to modify tex-typeface-crucible so that the colour
> scheme is enabled when the minor-mode is on.
I got the following warnings from the byte compiler:
Warning: defface for ‘colour-tex-cruc’ fails to specify containing group
Warning: reference to free variable ‘crucible-supinf-enable’
Warning: reference to free variable ‘crucible-supinf-vshift’
Warning: reference to free variable ‘supinf-font-lock-cruc’
Style PO-lice:
> (defface colour-tex-cruc
US English is preferable, then it becomes consistent. The user
shouldn't have think, "is the programmer a 'bloke' or
a 'dude'?" ...
> '( (default :inherit bold)
> ( ((class color) (min-colors 88) (background light))
> :foreground "#FF0000" )
> ( ((class color) (min-colors 88) (background dark))
> :foreground "#FF0000")
> (t :inherit font-lock-builtin-face) )
> "Typeface for tex keywords.")
Avoid hard-coding the same data (88 and "#FF0000") repeatedly.
Normally, the method is to use `let'.
> (defun supinf-disable-cruc (beg end)
> "Set typeface for text between BEG and END."
> (font-lock-default-unfontify-region beg end)
> (while (< beg end)
> (let ((next (next-single-property-change beg 'display nil end))
> (prop (get-text-property beg 'display)))
> (if (and (eq (car-safe prop) 'raise)
`if' -> `while'
> (member (car-safe (cdr prop)) crucible-supinf-vshift)
> (null (cddr prop)))
> (put-text-property beg next 'display nil))
> (setq beg next))))
This looks unorthodox but OK, I don't have a snappy answer
what to do instead...
> (defun tex-typeface-crucible ()
> "Font-lock setup for mathematical symbols."
> (font-lock-flush (point-min) (point-max))
Is that the same as just (font-lock-flush) ?
> (if crucible-supinf-enable
> (progn
> (font-lock-add-keywords nil crucible-tex-keywords t)
> (font-lock-add-keywords nil supinf-font-lock-cruc t))
> (font-lock-remove-keywords nil crucible-tex-keywords)
> (supinf-disable-cruc (point-min) (point-max)))
> (font-lock-flush (point-min) (point-max)))
Is that the same as ... same.
--
underground experts united
http://user.it.uu.se/~embe8573
https://dataswamp.org/~incal
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Separating colour and positioning functioning
2021-02-08 21:37 ` Emanuel Berg via Users list for the GNU Emacs text editor
@ 2021-02-09 0:20 ` Christopher Dimech
2021-02-09 0:27 ` Christopher Dimech
1 sibling, 0 replies; 6+ messages in thread
From: Christopher Dimech @ 2021-02-09 0:20 UTC (permalink / raw)
To: moasenwood; +Cc: help-gnu-emacs
> Sent: Tuesday, February 09, 2021 at 9:37 AM
> From: "Emanuel Berg via Users list for the GNU Emacs text editor" <help-gnu-emacs@gnu.org>
> To: help-gnu-emacs@gnu.org
> Subject: Re: Separating colour and positioning functioning
>
> Christopher Dimech wrote:
>
> > Have written a minor mode with part of the the code below
> > and want to modify tex-typeface-crucible so that the colour
> > scheme is enabled when the minor-mode is on.
>
> I got the following warnings from the byte compiler:
>
> Warning: defface for ‘colour-tex-cruc’ fails to specify containing group
> Warning: reference to free variable ‘crucible-supinf-enable’
> Warning: reference to free variable ‘crucible-supinf-vshift’
> Warning: reference to free variable ‘supinf-font-lock-cruc’
>
> Style PO-lice:
>
> > (defface colour-tex-cruc
>
> US English is preferable, then it becomes consistent. The user
> shouldn't have think, "is the programmer a 'bloke' or
> a 'dude'?" ...
>
> > '( (default :inherit bold)
> > ( ((class color) (min-colors 88) (background light))
> > :foreground "#FF0000" )
> > ( ((class color) (min-colors 88) (background dark))
> > :foreground "#FF0000")
> > (t :inherit font-lock-builtin-face) )
> > "Typeface for tex keywords.")
>
> Avoid hard-coding the same data (88 and "#FF0000") repeatedly.
> Normally, the method is to use `let'.
>
> > (defun supinf-disable-cruc (beg end)
> > "Set typeface for text between BEG and END."
> > (font-lock-default-unfontify-region beg end)
> > (while (< beg end)
> > (let ((next (next-single-property-change beg 'display nil end))
> > (prop (get-text-property beg 'display)))
> > (if (and (eq (car-safe prop) 'raise)
>
> `if' -> `while'
>
> > (member (car-safe (cdr prop)) crucible-supinf-vshift)
> > (null (cddr prop)))
> > (put-text-property beg next 'display nil))
> > (setq beg next))))
>
> This looks unorthodox but OK, I don't have a snappy answer
> what to do instead...
>
> > (defun tex-typeface-crucible ()
> > "Font-lock setup for mathematical symbols."
> > (font-lock-flush (point-min) (point-max))
>
> Is that the same as just (font-lock-flush) ?
The code is using narrow-to-region for finding areas where superior and
inferior typeface is enabled.
(defun crucible-supinf-match (limit)
"Match superior and inferior glyph patterns up to LIMIT."
(when (and crucible-mode
(re-search-forward "[_^] *\\([^\n\\{}]\\|\
\\\\\\([a-zA-Z@]+\\|[^ \t\n]\\)\\|\\({\\)\\)" limit t))
(when (match-end 3)
(let ((beg (match-beginning 3))
(end (save-restriction
(narrow-to-region (point-min) limit)
(condition-case nil
(scan-lists (point) 1 1) (error nil)))))
;; body of let
(store-match-data
(if end
(list (match-beginning 0) end beg end)
(list beg beg beg beg)))))
t))
> > (if crucible-supinf-enable
> > (progn
> > (font-lock-add-keywords nil crucible-tex-keywords t)
> > (font-lock-add-keywords nil supinf-font-lock-cruc t))
> > (font-lock-remove-keywords nil crucible-tex-keywords)
> > (supinf-disable-cruc (point-min) (point-max)))
> > (font-lock-flush (point-min) (point-max)))
>
> Is that the same as ... same.
>
> --
> underground experts united
> http://user.it.uu.se/~embe8573
> https://dataswamp.org/~incal
>
>
>
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Separating colour and positioning functioning
2021-02-08 21:37 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-02-09 0:20 ` Christopher Dimech
@ 2021-02-09 0:27 ` Christopher Dimech
2021-02-09 1:01 ` Emanuel Berg via Users list for the GNU Emacs text editor
1 sibling, 1 reply; 6+ messages in thread
From: Christopher Dimech @ 2021-02-09 0:27 UTC (permalink / raw)
To: moasenwood; +Cc: help-gnu-emacs
I am working on crucible-supinf-enable, which currently does both
font-lock-add-keywords and font-lock-unfontify-region-function
And would like the functionality to enable or disable only supinf
rather than disabling tex-keywords-cruc.
tex-keywords-cruc turns tex keywords to a red colour.
I want to have two functions, one to enable supinf, another to disable it.
> Sent: Tuesday, February 09, 2021 at 9:37 AM
> From: "Emanuel Berg via Users list for the GNU Emacs text editor" <help-gnu-emacs@gnu.org>
> To: help-gnu-emacs@gnu.org
> Subject: Re: Separating colour and positioning functioning
>
> Christopher Dimech wrote:
>
> > Have written a minor mode with part of the the code below
> > and want to modify tex-typeface-crucible so that the colour
> > scheme is enabled when the minor-mode is on.
>
> I got the following warnings from the byte compiler:
>
> Warning: defface for ‘colour-tex-cruc’ fails to specify containing group
> Warning: reference to free variable ‘crucible-supinf-enable’
> Warning: reference to free variable ‘crucible-supinf-vshift’
> Warning: reference to free variable ‘supinf-font-lock-cruc’
>
> Style PO-lice:
>
> > (defface colour-tex-cruc
>
> US English is preferable, then it becomes consistent. The user
> shouldn't have think, "is the programmer a 'bloke' or
> a 'dude'?" ...
>
> > '( (default :inherit bold)
> > ( ((class color) (min-colors 88) (background light))
> > :foreground "#FF0000" )
> > ( ((class color) (min-colors 88) (background dark))
> > :foreground "#FF0000")
> > (t :inherit font-lock-builtin-face) )
> > "Typeface for tex keywords.")
>
> Avoid hard-coding the same data (88 and "#FF0000") repeatedly.
> Normally, the method is to use `let'.
>
> > (defun supinf-disable-cruc (beg end)
> > "Set typeface for text between BEG and END."
> > (font-lock-default-unfontify-region beg end)
> > (while (< beg end)
> > (let ((next (next-single-property-change beg 'display nil end))
> > (prop (get-text-property beg 'display)))
> > (if (and (eq (car-safe prop) 'raise)
>
> `if' -> `while'
>
> > (member (car-safe (cdr prop)) crucible-supinf-vshift)
> > (null (cddr prop)))
> > (put-text-property beg next 'display nil))
> > (setq beg next))))
>
> This looks unorthodox but OK, I don't have a snappy answer
> what to do instead...
>
> > (defun tex-typeface-crucible ()
> > "Font-lock setup for mathematical symbols."
> > (font-lock-flush (point-min) (point-max))
>
> Is that the same as just (font-lock-flush) ?
>
> > (if crucible-supinf-enable
> > (progn
> > (font-lock-add-keywords nil crucible-tex-keywords t)
> > (font-lock-add-keywords nil supinf-font-lock-cruc t))
> > (font-lock-remove-keywords nil crucible-tex-keywords)
> > (supinf-disable-cruc (point-min) (point-max)))
> > (font-lock-flush (point-min) (point-max)))
>
> Is that the same as ... same.
>
> --
> underground experts united
> http://user.it.uu.se/~embe8573
> https://dataswamp.org/~incal
>
>
>
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Separating colour and positioning functioning
2021-02-09 0:27 ` Christopher Dimech
@ 2021-02-09 1:01 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-02-09 2:30 ` Christopher Dimech
0 siblings, 1 reply; 6+ messages in thread
From: Emanuel Berg via Users list for the GNU Emacs text editor @ 2021-02-09 1:01 UTC (permalink / raw)
To: help-gnu-emacs
Christopher Dimech wrote:
> I want to have two functions, one to enable supinf, another
> to disable it.
An example toggle function:
(defvar erc-do-spell)
(setq erc-do-spell t)
(defun erc-toggle-spell ()
(interactive)
(setq erc-do-spell (not erc-do-spell)) )
https://dataswamp.org/~incal/emacs-init/erc-incal.el
--
underground experts united
http://user.it.uu.se/~embe8573
https://dataswamp.org/~incal
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Separating colour and positioning functioning
2021-02-09 1:01 ` Emanuel Berg via Users list for the GNU Emacs text editor
@ 2021-02-09 2:30 ` Christopher Dimech
0 siblings, 0 replies; 6+ messages in thread
From: Christopher Dimech @ 2021-02-09 2:30 UTC (permalink / raw)
To: moasenwood; +Cc: help-gnu-emacs
I am thinking to call tex-font-lock-unfontify-region
Have done
(defun supinf-disable ()
"Disable the supinf typeface"
(font-lock-flush (point-min) (point-max))
(setq font-lock-defaults
'(font-lock-unfontify-region-function . tex-font-lock-unfontify-region))
(font-lock-flush (point-min) (point-max)) )
> Sent: Tuesday, February 09, 2021 at 1:01 PM
> From: "Emanuel Berg via Users list for the GNU Emacs text editor" <help-gnu-emacs@gnu.org>
> To: help-gnu-emacs@gnu.org
> Subject: Re: Separating colour and positioning functioning
>
> Christopher Dimech wrote:
>
> > I want to have two functions, one to enable supinf, another
> > to disable it.
>
> An example toggle function:
>
> (defvar erc-do-spell)
> (setq erc-do-spell t)
>
> (defun erc-toggle-spell ()
> (interactive)
> (setq erc-do-spell (not erc-do-spell)) )
>
> https://dataswamp.org/~incal/emacs-init/erc-incal.el
>
> --
> underground experts united
> http://user.it.uu.se/~embe8573
> https://dataswamp.org/~incal
>
>
>
^ permalink raw reply [flat|nested] 6+ messages in thread
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2021-02-08 15:02 Separating colour and positioning functioning Christopher Dimech
2021-02-08 21:37 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-02-09 0:20 ` Christopher Dimech
2021-02-09 0:27 ` Christopher Dimech
2021-02-09 1:01 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-02-09 2:30 ` Christopher Dimech
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