Hello all,
I just wanted to shortly mention that to me it seems
that while
git help rev-parse
says
:/<text>, e.g. :/fix nasty bug
A colon, followed by a slash, followed by a text, names a commit whose commit message matches the specified regular expression. This name returns the
youngest matching commit which is reachable from any ref. If the commit message starts with a ! you have to repeat that; the special sequence :/!, followed
by something else than !, is reserved for now. The regular expression can match any part of the commit message. To match messages starting with a string, one
can use e.g. :/^foo.
, the supported syntax seems to be decidedly not really regex,
as opposed to
git log --grep
Creating a minimal reproducing repo sample
with e.g. a dummy commit series of the following commit titles:
My commit last
My commit
My commit first
and doing searches via
git rev-parse :/'^My commi\w'
git rev-parse :/'^My commit$'
git rev-parse :/'^My commit'
git log --grep='^My commit$' --format=%H <---- that one seems to work fully reliably
will yield surprising results
(returning most recent commit rather than commit title exact-match one),
and no amount of fiddling with various regex flavour syntax deviations
managed to fix it for me.
Unless I happened to misunderstand git's regex flavour, or something else...
(hmm, perhaps it's a try-match-single-line vs. multi-line content issue,
which perhaps does not work by specifying the trailing $)
$ git --version
git version 2.5.5
(same irritating behaviour also encountered on some older version, perhaps 2.0/2.1 range)
If this bug is confirmed, then I could suggest two variants:
- fix rev-parse's handling of :/ to actually do the correct thing, if easily possible
- simply fix rev-parse's docs to correctly indicate
that unfortunately it is NOT fully regex capable,
and ensure also having added a reference to the (much?) more reliably working
git log --grep.
If this bug is not confirmed, then the question would be
what kind of potential documentation / usability weaknesses
successfully managed to lead me astray
and thus would need to be fixed.
Thanks,
Andreas Mohr
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