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authorKaushal Modi <kaushal.modi@gmail.com>2017-04-05 17:16:33 -0400
committerNoam Postavsky <npostavs@gmail.com>2017-04-07 18:29:28 -0400
commit75824977851f27146638672bba4d3789f2a32612 (patch)
tree47175fec5badfd681d65e4cdf29709e1aacd22b3 /lisp/vc/ediff-diff.el
parent9e27e0d1a6c90d0d29e41884155245b6c3378b0a (diff)
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Check that file argument is a string
* lisp/vc/ediff-diff.el (ediff-exec-process): Check that the argument passed to `file-local-copy' is a string (Bug#26378). Also fix the existing comment for this function, and convert it to its doc-string.
Diffstat (limited to 'lisp/vc/ediff-diff.el')
-rw-r--r--lisp/vc/ediff-diff.el23
1 files changed, 16 insertions, 7 deletions
diff --git a/lisp/vc/ediff-diff.el b/lisp/vc/ediff-diff.el
index cfa08ef3604..ded82c41c9b 100644
--- a/lisp/vc/ediff-diff.el
+++ b/lisp/vc/ediff-diff.el
@@ -1134,12 +1134,20 @@ delimiter regions"))
))
-;; Execute PROGRAM asynchronously, unless OS/2, Windows-*, or DOS, or unless
-;; SYNCH is non-nil. BUFFER must be a buffer object, and must be alive. The
-;; OPTIONS arg is a list of options to pass to PROGRAM. It may be a blank
-;; string. All elements in FILES must be strings. We also delete nil from
-;; args.
(defun ediff-exec-process (program buffer synch options &rest files)
+ "Execute the diff PROGRAM.
+
+The PROGRAM output is sent to BUFFER, which must be a live buffer
+object.
+
+The PROGRAM is executed asynchronously unless `system-type' is
+`windows-nt' or `ms-dos', or SYNCH is non-nil.
+
+OPTIONS is a string of space-separated options to pass to PROGRAM. It
+may be a blank string.
+
+FILES is a list of filenames to pass to PROGRAM; nil and \"\" elements
+are ignored."
(let ((data (match-data))
;; If this is a buffer job, we are diffing temporary files
;; produced by Emacs with ediff-coding-system-for-write, so
@@ -1151,8 +1159,9 @@ delimiter regions"))
args)
(setq args (append (split-string options)
(mapcar (lambda (file)
- (file-name-unquote
- (or (file-local-copy file) file)))
+ (when (stringp file)
+ (file-name-unquote
+ (or (file-local-copy file) file))))
files)))
(setq args (delete "" (delq nil args))) ; delete nil and "" from arguments
;; the --binary option, if present, should be used only for buffer jobs