Fix 'diff-font-lock-prettify' breaking display of outline headers

* lisp/vc/diff-mode.el (diff-outline-level): Make hunk headers be
at level 2.
(diff-mode): Use prettified line as outline header.
(diff--outline-level): New function (bug#51016).

* lisp/vc/vc.el (vc-diff-internal): Fix diff mode being set before
content inserted (bug#51016).
This commit is contained in:
Matthias Meulien 2021-11-05 03:50:01 +01:00 committed by Lars Ingebrigtsen
parent 48af19c1f0
commit f0768d3145
2 changed files with 20 additions and 10 deletions

View file

@ -893,6 +893,9 @@ data such as \"Index: ...\" and such."
;; Fix the original hunk-header.
(diff-fixup-modifs start pos))))
(defun diff--outline-level ()
(if (string-match-p diff-hunk-header-re (match-string 0))
2 1))
;;;;
;;;; jump to other buffers
@ -1493,7 +1496,6 @@ a diff with \\[diff-reverse-direction].
(setq-local font-lock-defaults diff-font-lock-defaults)
(add-hook 'font-lock-mode-hook #'diff--font-lock-cleanup nil 'local)
(setq-local outline-regexp diff-outline-regexp)
(setq-local imenu-generic-expression
diff-imenu-generic-expression)
;; These are not perfect. They would be better done separately for
@ -1542,7 +1544,12 @@ a diff with \\[diff-reverse-direction].
(setq-local diff-buffer-type
(if (re-search-forward "^diff --git" nil t)
'git
nil))))
nil)))
(when (eq diff-buffer-type 'git)
(setq diff-outline-regexp
(concat "\\(^diff --git.*\n\\|" diff-hunk-header-re "\\)"))
(setq-local outline-level #'diff--outline-level))
(setq-local outline-regexp diff-outline-regexp))
;;;###autoload
(define-minor-mode diff-minor-mode
@ -2602,13 +2609,15 @@ fixed, visit it in a buffer."
(or (match-beginning 2) (match-beginning 1))
'display (propertize
(cond
((null (match-beginning 1)) "new file ")
((null (match-beginning 2)) "deleted ")
(t "modified "))
((null (match-beginning 1))
(concat "new file " (match-string 2)))
((null (match-beginning 2))
(concat "deleted " (match-string 1)))
(t
(concat "modified " (match-string 1))))
'face '(diff-file-header diff-header)))
(unless (match-beginning 2)
(put-text-property (match-end 1) (1- (match-end 0))
'display "")))))
(put-text-property (match-end 1) (1- (match-end 0))
'display ""))))
nil)
;;; Syntax highlighting from font-lock

View file

@ -1793,7 +1793,6 @@ Return t if the buffer had changes, nil otherwise."
(setq files (nreverse filtered))))
(vc-call-backend (car vc-fileset) 'diff files rev1 rev2 buffer async)
(set-buffer buffer)
(diff-mode)
(setq-local diff-vc-backend (car vc-fileset))
(setq-local diff-vc-revisions (list rev1 rev2))
(setq-local revert-buffer-function
@ -1815,7 +1814,9 @@ Return t if the buffer had changes, nil otherwise."
;; after `pop-to-buffer'; the former assumes the diff buffer is
;; shown in some window.
(let ((buf (current-buffer)))
(vc-run-delayed (vc-diff-finish buf (when verbose messages))))
(vc-run-delayed (progn
(vc-diff-finish buf (when verbose messages))
(diff-mode))))
;; In the async case, we return t even if there are no differences
;; because we don't know that yet.
t)))