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Author	SHA1	Message	Date
Johan Herland	3e5a188f1d	diff.c: Ensure "index $from..$to" line contains unambiguous SHA1s In the metainfo section of git diffs there's an "index" line providing abbreviated (unless --full-index is used) blob SHA1s from the pre-/post-images used to generate the diff. These provide hints that can be used to reconstruct a 3-way merge when applying the patch (see the --3way option to 'git am' for more details). In order for this to work, however, the blob SHA1s must not be abbreviated into ambiguity. This patch eliminates the possible ambiguity by using find_unique_abbrev() to produce the abbreviated SHA1s (instead of blind abbreviation by way of "%.*s"). A testcase verifying the fix is also included. Signed-off-by: Johan Herland <johan@herland.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>	15 years ago

Author

SHA1

Message

Date

Johan Herland

3e5a188f1d

diff.c: Ensure "index $from..$to" line contains unambiguous SHA1s

In the metainfo section of git diffs there's an "index" line providing
abbreviated (unless --full-index is used) blob SHA1s from the
pre-/post-images used to generate the diff. These provide hints that
can be used to reconstruct a 3-way merge when applying the patch
(see the --3way option to 'git am' for more details).

In order for this to work, however, the blob SHA1s must not be
abbreviated into ambiguity.

This patch eliminates the possible ambiguity by using find_unique_abbrev()
to produce the abbreviated SHA1s (instead of blind abbreviation by way of
"%.*s").

A testcase verifying the fix is also included.

Signed-off-by: Johan Herland <johan@herland.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

15 years ago

1 Commits (594ffe80e7827b20335c5c6dde2cf57c9919db68)