Hello,

In the past month or two, I have noticed that left edge of the fringe gets
cut by a pixel if that fringe is on the the left-most window (i.e. not in a
window that shares the left edge of the frame too).

While this might seem nitpicky, that is very evident when using a package
that diff-hl that shows the uncommited changed lines in the fringe.

Step 0: Please eval the below macro.. it's just a helper to install the
needed package.

(defmacro emacs-pkg-debug-setup (pkg-alist &rest body)
  "Install packages in PKG-ALIST and evaluate BODY.
Each element of PKG-ALIST has the form (((ID . LOCATION) . (PKG1 PKG2 ..))
..).
The ID and LOCATION are the same as the ones in `package-archives'.
PKG1, PKG2, .. are package names from the ID archive.

Example usage:

1. Launch 'emacs -Q'.
2. Copy this macro definition to its scratch buffer and evaluate it.
3. Evaluate a minimum working example using this macro as below:
     (emacs-pkg-debug-setup '(;; Install hydra from GNU Elpa
                              (nil . (hydra))
                              ;; Install org from Org Elpa
                              ((\"org\" . \"http://orgmode.org/elpa/\") .
(org)))
       ;; Then evaluate the below forms
       (org-mode)) "
  (declare (indent 1) (debug t))
  `(progn
     (require 'package)
     (setq user-emacs-directory (concat temporary-file-directory
                                        (getenv "USER") "/"
".emacs.d-debug/"))
     (setq package-user-dir (format "%selpa_%s/"
                                    user-emacs-directory
emacs-major-version))
     (let (archive pkgs)
       (dolist (archive-alist ,pkg-alist)
(setq archive (car archive-alist))
(when archive
           (add-to-list 'package-archives archive :append))
         (setq pkgs (append pkgs (cdr archive-alist))))
       (package-initialize)
       (package-refresh-contents)

       (dolist (pkg pkgs)
         (when (and pkg (not (package-installed-p pkg)))
           (package-install pkg))
         (require pkg))

       ,@body)))

;; Step 1: Eval above macro and then the below form
(emacs-pkg-debug-setup '((nil . (diff-hl)))
  (scroll-bar-mode -1)
  (message "Done!"))

(PS: You may skip Steps 0 and 1 and do these instead manually, and then
proceed to Step 2.)
i. Install diff-hl in emacs -Q
ii. (scroll-bar-mode -1)

Step 2: Open a git controlled file, make some changes and save it
Step 3: Eval: (diff-hl-mode)
Step 4: Split the window: C-x 3

[image: image.png]

Notice how the green bracket in the fringe covering the changed line looks
on the left window (sharing the left edge with frame), and how the window
divider overlaps the vertical line of the green bracket in the fringe in
the right-hand-side window.

This did not happen in emacs 25.x or until "recently" (about a month or two
back).

I am copying Dmitry (author of diff-hl package) as he also has seen this
issue happen:
https://github.com/dgutov/diff-hl/issues/94#issuecomment-317815076

Also copying Martin as my gut feeling says that he would know exactly
what's going on here as it has to do with windows and frames :) My
apologies if I shouldn't have copied you.

Thanks.

In GNU Emacs 26.0.50 (build 17, x86_64-pc-linux-gnu, GTK+ Version 2.24.23)
 of 2017-07-25
Repository revision: 6dc5d45c542a6f9cfbcf3e37d597c9e0efb3070d
Windowing system distributor 'The X.Org Foundation', version 11.0.60900000
System Description: Red Hat Enterprise Linux Workstation release 6.6
(Santiago)

Recent messages:
nil
next-line: End of buffer
C-x 3 runs the command split-window-right
C-x 2 runs the command split-window-below
C-x 3 runs the command split-window-right
Mark set [2 times]
Saved text until "mode)
;; Step 4: Split the window: C-x 3"
Mark set
Making completion list...

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Memory information:
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-- 

Kaushal Modi