undef/git-commit-vandalism
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add --edit: truncate the patch file

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If there is already a .git/ADD_EDIT.patch file, we fail to truncate it
properly, which could result in very funny errors.

Of course, this file should not be left lying around. But at least in
one case, there was a stale copy, larger than the current diff. So the
result was a corrupt diff.

Let's just truncate the file when we write it and not worry about it too
much.

Reported by J Wyman.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Johannes Schindelin 2019-01-15 07:42:52 -08:00 committed by Junio C Hamano
parent 268fbcd172
commit fa6f225e01
1 changed files with 1 additions and 1 deletions
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2
builtin/add.c
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@ -239,7 +239,7 @@ static int edit_patch(int argc, const char **argv, const char *prefix)
rev.diffopt.output_format = DIFF_FORMAT_PATCH;
rev.diffopt.use_color = 0;
rev.diffopt.flags.ignore_dirty_submodules = 1;
out = open(file, O_CREAT | O_WRONLY, 0666);
out = open(file, O_CREAT | O_WRONLY | O_TRUNC, 0666);
if (out < 0)
die(_("Could not open '%s' for writing."), file);
rev.diffopt.file = xfdopen(out, "w");