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Fix applying patches with Git on MS-Windows

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* lisp/vc/vc.el (vc-diff-internal): For Git, always suppress EOL
conversion when reading the diffs into a buffer.  Doc fix.
* lisp/vc/vc-git.el (vc-git-checkin): Make sure to suppress EOL
conversion when the patch file is written.  (Bug#65049)
This commit is contained in:
Eli Zaretskii 2023-08-27 08:24:39 +03:00
parent de335cb3dc
commit 0c50af054f
2 changed files with 26 additions and 5 deletions
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10
lisp/vc/vc-git.el
View File

@ -1051,7 +1051,15 @@ It is based on `log-edit-mode', and has Git-specific extensions."
(user-error "Index not empty"))
(setq pos (point))))))
(unless (string-empty-p vc-git-patch-string)
(let ((patch-file (make-nearby-temp-file "git-patch")))
(let ((patch-file (make-nearby-temp-file "git-patch"))
;; Temporarily countermand the let-binding at the
;; beginning of this function.
(coding-system-for-write
(coding-system-change-eol-conversion
;; On DOS/Windows, it is important for the patch file
;; to have the Unix EOL format, because Git expects
;; that, even on Windows.
(or pcsw vc-git-commits-coding-system) 'unix)))
(with-temp-file patch-file
(insert vc-git-patch-string))
(unwind-protect

21
lisp/vc/vc.el
View File

@ -1894,7 +1894,9 @@ in the output buffer."
(vc-run-delayed (vc-diff-finish (current-buffer) nil))))
(defun vc-diff-internal (async vc-fileset rev1 rev2 &optional verbose buffer)
"Report diffs between two revisions of a fileset.
"Report diffs between revisions REV1 and REV2 of a fileset in VC-FILESET.
ASYNC non-nil means run the backend's commands asynchronously if possible.
VC-FILESET should have the format described in `vc-deduce-fileset'.
Output goes to the buffer BUFFER, which defaults to *vc-diff*.
BUFFER, if non-nil, should be a buffer or a buffer name.
Return t if the buffer had changes, nil otherwise."
@ -1910,15 +1912,26 @@ Return t if the buffer had changes, nil otherwise."
;; but the only way to set it for each file included would
;; be to call the back end separately for each file.
(coding-system-for-read
(if files (vc-coding-system-for-diff (car files)) 'undecided))
;; Force the EOL conversion to be -unix, in case the files
;; to be compared have DOS EOLs. In that case, EOL
;; conversion will produce a patch file that will either
;; fail to apply, or will change the EOL format of some of
;; the lines in the patched file.
(coding-system-change-eol-conversion
(if files (vc-coding-system-for-diff (car files)) 'undecided)
'unix))
(orig-diff-buffer-clone
(if revert-buffer-in-progress-p
(clone-buffer
(generate-new-buffer-name " *vc-diff-clone*") nil))))
;; On MS-Windows and MS-DOS, Diff is likely to produce DOS-style
;; EOLs, which will look ugly if (car files) happens to have Unix
;; EOLs.
(if (memq system-type '(windows-nt ms-dos))
;; EOLs. But for Git, we must force Unix EOLs in the diffs, since
;; Git always produces Unix EOLs in the parts that didn't come
;; from the file, and wants to see any CR characters when applying
;; patches.
(if (and (memq system-type '(windows-nt ms-dos))
(not (eq (car vc-fileset) 'Git)))
(setq coding-system-for-read
(coding-system-change-eol-conversion coding-system-for-read
'dos)))