diff options
Diffstat (limited to 'lisp/vc/diff.el')
| -rw-r--r-- | lisp/vc/diff.el | 24 |
1 files changed, 17 insertions, 7 deletions
diff --git a/lisp/vc/diff.el b/lisp/vc/diff.el index 341a2891265..3e35a3329b1 100644 --- a/lisp/vc/diff.el +++ b/lisp/vc/diff.el @@ -52,6 +52,12 @@ set (`vc-git-diff-switches' for git, for instance), and "The command to use to run diff." :type 'string) +(defcustom diff-entire-buffers t + "If non-nil, diff the entire buffers, not just the visible part. +If nil, only use the narrowed-to parts of the buffers." + :type 'boolean + :version "29.1") + ;; prompt if prefix arg present (defun diff-switches () (if current-prefix-arg @@ -96,15 +102,15 @@ Non-interactively, OLD and NEW may each be a file or a buffer." (interactive (let* ((newf (if (and buffer-file-name (file-exists-p buffer-file-name)) (read-file-name - (concat "Diff new file (default " - (file-name-nondirectory buffer-file-name) "): ") + (format-prompt "Diff new file" + (file-name-nondirectory buffer-file-name)) nil buffer-file-name t) (read-file-name "Diff new file: " nil nil t))) (oldf (file-newest-backup newf))) (setq oldf (if (and oldf (file-exists-p oldf)) (read-file-name - (concat "Diff original file (default " - (file-name-nondirectory oldf) "): ") + (format-prompt "Diff original file" + (file-name-nondirectory oldf)) (file-name-directory oldf) oldf t) (read-file-name "Diff original file: " (file-name-directory newf) nil t))) @@ -119,7 +125,9 @@ temporary file with the buffer's contents." (if (bufferp file-or-buf) (with-current-buffer file-or-buf (let ((tempfile (make-temp-file "buffer-content-"))) - (write-region nil nil tempfile nil 'nomessage) + (if diff-entire-buffers + (write-region nil nil tempfile nil 'nomessage) + (write-region (point-min) (point-max) tempfile nil 'nomessage)) tempfile)) (file-local-copy file-or-buf))) @@ -145,7 +153,7 @@ Possible values are: ;; Noninteractive helper for creating and reverting diff buffers "Compare the OLD and NEW file/buffer. If the optional SWITCHES is nil, the switches specified in the -variable ‘diff-switches’ are passed to the diff command, +variable `diff-switches' are passed to the diff command, otherwise SWITCHES is used. SWITCHES can be a string or a list of strings. @@ -274,7 +282,9 @@ interactively for diff switches. Otherwise, the switches specified in the variable `diff-switches' are passed to the diff command. -OLD and NEW may each be a buffer or a buffer name." +OLD and NEW may each be a buffer or a buffer name. + +Also see the `diff-entire-buffers' variable." (interactive (let ((newb (read-buffer "Diff new buffer" (current-buffer) t)) (oldb (read-buffer "Diff original buffer" |