[nongnu] elpa/git-commit d46270cb65 3/4: git-commit-setup-font-lock: Set comment-end to the empty string

[ELPA Syncer]

branch: elpa/git-commit
commit d46270cb65e24e131483ee5976d7c040bfcffd57
Author: Jonas Bernoulli <jonas@bernoul.li>
Commit: Jonas Bernoulli <jonas@bernoul.li>

    git-commit-setup-font-lock: Set comment-end to the empty string
    
    Some major-modes used while editing commit messages, may set that
    variable and other `comment-*' variables to values that are not
    compatible with Git's understanding of comments, which always only
    uses a comment character at the beginning, either the default "#" or
    what is specified using `core.commentchar'.  Git's understanding of
    how comments are delimited takes precedence over the major-modes
    style, because it is Git that strips the comments.
    
    `markdown-mode', for example, sets `comment-start' to "<!--" and
    `comment-end' to "-->"; and we failed to override the latter until
    now.
    
    Furthermore, `markdown-fill-paragraph' does not handle Git-style
    comments, which is to be expected, but forces us neutralize it when
    called on a comment.  This is not necessary for any of the other
    modes we suggest for `git-commit-major-mode'.
    
    Closes #4990.
    Replaces #4991.
---
 lisp/git-commit.el | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/lisp/git-commit.el b/lisp/git-commit.el
index 2b39bba00c..0524aad14e 100644
--- a/lisp/git-commit.el
+++ b/lisp/git-commit.el
@@ -1076,8 +1076,15 @@ Added to `font-lock-extend-region-functions'."
                              (buffer-substring (point) (line-end-position)))))
                     "#"))
     (setq-local comment-start-skip (format "^%s+[\s\t]*" comment-start))
+    (setq-local comment-end "")
     (setq-local comment-end-skip "\n")
     (setq-local comment-use-syntax nil)
+    (when (derived-mode-p 'markdown-mode)
+      (setq-local fill-paragraph-function
+                  (lambda (&optional justify)
+                    (and (not (= (char-after (line-beginning-position))
+                                 (aref comment-start 0)))
+                         (markdown-fill-paragraph justify)))))
     (setq-local git-commit--branch-name-regexp
                 (if (and (featurep 'magit-git)
                          ;; When using cygwin git, we may end up in a