Function: vc-diff

vc-diff is an autoloaded, interactive and byte-compiled function defined in vc.el.gz.

Signature

(vc-diff &optional HISTORIC NOT-ESSENTIAL FILESET)

Documentation

Display diffs between file revisions.

Normally this compares the currently selected fileset with their working revisions. With a prefix argument HISTORIC, it reads two revision designators specifying which revisions to compare.

Optional argument NOT-ESSENTIAL non-nil means it is okay to say no to saving the buffer. Optional argument FILESET, if non-nil, overrides the fileset.

View in manual

Probably introduced at or before Emacs version 20.3.

Key Bindings

Source Code

;; Defined in /usr/src/emacs/lisp/vc/vc.el.gz
;;;###autoload
(defun vc-diff (&optional historic not-essential fileset)
  "Display diffs between file revisions.
Normally this compares the currently selected fileset with their
working revisions.  With a prefix argument HISTORIC, it reads two revision
designators specifying which revisions to compare.

Optional argument NOT-ESSENTIAL non-nil means it is okay to say no to
saving the buffer.
Optional argument FILESET, if non-nil, overrides the fileset."
  (interactive (list current-prefix-arg t))
  (if historic
      (call-interactively 'vc-version-diff)
    (let ((fileset (or fileset (vc-deduce-fileset t))))
      (vc-buffer-sync-fileset fileset not-essential)
      (vc-diff-internal vc-allow-async-diff fileset nil nil
			(called-interactively-p 'interactive)))))