diff options
| author | Junio C Hamano <gitster@pobox.com> | 2010-08-23 10:17:03 -0700 |
|---|---|---|
| committer | Junio C Hamano <gitster@pobox.com> | 2010-08-31 14:30:29 -0700 |
| commit | f506b8e8b5fb231e63b69668b6b7516f12b32228 (patch) | |
| tree | 02a300dcd882e8ee1d921345250dbe48702da0fe /Documentation/diff-options.txt | |
| parent | 382f013bc40452e4c24b8698217a14ff35f6dcec (diff) | |
| download | git-f506b8e8b5fb231e63b69668b6b7516f12b32228.tar.gz | |
git log/diff: add -G<regexp> that greps in the patch text
Teach "-G<regexp>" that is similar to "-S<regexp> --pickaxe-regexp" to the
"git diff" family of commands. This limits the diff queue to filepairs
whose patch text actually has an added or a deleted line that matches the
given regexp. Unlike "-S<regexp>", changing other parts of the line that
has a substring that matches the given regexp IS counted as a change, as
such a change would appear as one deletion followed by one addition in a
patch text.
Unlike -S (pickaxe) that is intended to be used to quickly detect a commit
that changes the number of occurrences of hits between the preimage and
the postimage to serve as a part of larger toolchain, this is meant to be
used as the top-level Porcelain feature.
The implementation unfortunately has to run "diff" twice if you are
running "log" family of commands to produce patches in the final output
(e.g. "git log -p" or "git format-patch"). I think we _could_ cache the
result in-core if we wanted to, but that would require larger surgery to
the diffcore machinery (i.e. adding an extra pointer in the filepair
structure to keep a pointer to a strbuf around, stuff the textual diff to
the strbuf inside diffgrep_consume(), and make use of it in later stages
when it is available) and it may not be worth it.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'Documentation/diff-options.txt')
| -rw-r--r-- | Documentation/diff-options.txt | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/Documentation/diff-options.txt b/Documentation/diff-options.txt index 4656a97e60..f77a0f8749 100644 --- a/Documentation/diff-options.txt +++ b/Documentation/diff-options.txt @@ -284,8 +284,12 @@ ifndef::git-format-patch[] appearing in diff output; see the 'pickaxe' entry in linkgit:gitdiffcore[7] for more details. +-G<regex>:: + Look for differences whose added or removed line matches + the given <regex>. + --pickaxe-all:: - When `-S` finds a change, show all the changes in that + When `-S` or `-G` finds a change, show all the changes in that changeset, not just the files that contain the change in <string>. |