On Mon, Feb 25, 2019 at 12:18:17PM -0500, Jeff King wrote:
> > git log docs suggest it should not do this:
> >
> > -s, --no-patch
> > Suppress diff output. Useful for commands like git show
> > that show the patch by default, or to cancel
> > the effect of --patch.
> >
> > Couldn't find anything in a search of the archives of this mailing
> > list, although that's obviously far from conclusive. Seems to be
> > longstanding, as it was mentioned on StackOverflow back in 2015:
>
> I think the issue is just that "-L" follows a very different code path
> than the normal diff generator. Perhaps something like this helps?
Here it is with a test and a commit message (I don't think any doc
update is necessary; as you noted, the docs already imply this is what
should happen).
-- >8 --
Subject: [PATCH] line-log: suppress diff output with "-s"
When "-L" is in use, we ignore any diff output format that the user
provides to us, and just always print a patch (with extra context lines
covering the whole area of interest). It's not entirely clear what we
should do with all formats (e.g., should "--stat" show just the diffstat
of the touched lines, or the stat for the whole file?).
But "-s" is pretty clear: the user probably wants to see just the
commits that touched those lines, without any diff at all. Let's at
least make that work.
Signed-off-by: Jeff King <p...@peff.net>
---
This punts completely on the larger question of what should happen with
other formats like "--stat", "--raw", etc. They'll continue to be
ignored entirely and we'll generate the line-log patch. Possibly we
should detect and complain?
line-log.c | 3 ++-
t/t4211-line-log.sh | 7 +++++++
2 files changed, 9 insertions(+), 1 deletion(-)
diff --git a/line-log.c b/line-log.c
index 24e21731c4..863f5cbe0f 100644
--- a/line-log.c
+++ b/line-log.c
@@ -1106,7 +1106,8 @@ int line_log_print(struct rev_info *rev, struct commit
*commit)
struct line_log_data *range = lookup_line_range(rev, commit);
show_log(rev);
- dump_diff_hacky(rev, range);
+ if (!(rev->diffopt.output_format & DIFF_FORMAT_NO_OUTPUT))
+ dump_diff_hacky(rev, range);
return 1;
}
diff --git a/t/t4211-line-log.sh b/t/t4211-line-log.sh
index bd5fe4d148..c9f2036f68 100755
--- a/t/t4211-line-log.sh
+++ b/t/t4211-line-log.sh
@@ -115,4 +115,11 @@ test_expect_success 'range_set_union' '
git log $(for x in $(test_seq 200); do echo -L $((2*x)),+1:c.c; done)
'
+test_expect_success '-s shows only line-log commits' '
+ git log --format="commit %s" -L1,24:b.c >expect.raw &&
+ grep ^commit expect.raw >expect &&
+ git log --format="commit %s" -L1,24:b.c -s >actual &&
+ test_cmp expect actual
+'
+
test_done
--
2.21.0.672.g12e864cee7
