From: Denton Liu <liu.denton@gmail.com>
To: Git Mailing List <git@vger.kernel.org>
Cc: Junio C Hamano <gitster@pobox.com>
Subject: [PATCH v3 00/10] builtin/diff: learn --merge-base
Date: Thu, 17 Sep 2020 00:44:04 -0700 [thread overview]
Message-ID: <cover.1600328335.git.liu.denton@gmail.com> (raw)
In-Reply-To: <cover.1599723087.git.liu.denton@gmail.com>
The range-notation in `git diff` has been cited as a mistake since diff
compares two endpoints, not whole ranges.[0] In fact, the ranges seem
to take on the opposite meanings when compared to range notation in
`git log`.
In an effort to reduce the use of range notation as much as possible,
introduce the `--merge-base` flag, slightly modified from a suggestion
by Jonathan Nieder.[1] This flag allows us to replace the first commit
given on the command-line with its merge base between the first and
second commits. This allows us to gently deprecate the `...` form
entirely, although that is left as an exercise to the reader ;)
One additional bonus is that this flag allows the "after" side to be not
just constrained to a commit (like with `...` notation). It can now be
the working tree or the index as well.
The `--merge-base` name isn't very satisfying. If anyone has any better
suggestions, please let me know.
Changes since v1:
* Implement Junio's documentation suggestions
* Update git diff's usage to include this option
Changes since v2:
* Teach diff-index and diff-tree the --merge-base option as well
[0]: https://lore.kernel.org/git/xmqqy2v26hu0.fsf@gitster-ct.c.googlers.com/
[1]: https://lore.kernel.org/git/20191223215928.GB38316@google.com/
Denton Liu (10):
t4068: remove unnecessary >tmp
git-diff-index.txt: make --cached description a proper sentence
git-diff.txt: backtick quote command text
contrib/completion: extract common diff/difftool options
diff-lib: accept option flags in run_diff_index()
diff-lib: define diff_get_merge_base()
t4068: add --merge-base tests
builtin/diff-index: learn --merge-base
builtin/diff-tree: learn --merge-base
contrib/completion: complete `git diff --merge-base`
Documentation/git-diff-index.txt | 9 +-
Documentation/git-diff-tree.txt | 7 +-
Documentation/git-diff.txt | 37 +++--
builtin/diff-index.c | 10 +-
builtin/diff-tree.c | 18 +++
builtin/diff.c | 50 ++++---
contrib/completion/git-completion.bash | 15 +-
diff-lib.c | 65 ++++++++-
diff.h | 6 +-
t/t4068-diff-symmetric-merge-base.sh | 193 +++++++++++++++++++++++++
t/t4068-diff-symmetric.sh | 91 ------------
11 files changed, 358 insertions(+), 143 deletions(-)
create mode 100755 t/t4068-diff-symmetric-merge-base.sh
delete mode 100755 t/t4068-diff-symmetric.sh
Range-diff against v2:
1: 80e9066a59 = 1: 80e9066a59 t4068: remove unnecessary >tmp
-: ---------- > 2: 21b20281e6 git-diff-index.txt: make --cached description a proper sentence
2: 8e72bd8fea = 3: ca9568c2ea git-diff.txt: backtick quote command text
3: ea6717e7b3 < -: ---------- builtin/diff: parse --no-index using parse_options()
4: 4f219cf0d1 < -: ---------- builtin/diff: learn --merge-base
-: ---------- > 4: 1ac8459541 contrib/completion: extract common diff/difftool options
-: ---------- > 5: 496908ac10 diff-lib: accept option flags in run_diff_index()
-: ---------- > 6: 6aac57ca02 diff-lib: define diff_get_merge_base()
-: ---------- > 7: c9225a0440 t4068: add --merge-base tests
-: ---------- > 8: 1e4f805e57 builtin/diff-index: learn --merge-base
-: ---------- > 9: c0d27b125e builtin/diff-tree: learn --merge-base
-: ---------- > 10: 42a8c9b665 contrib/completion: complete `git diff --merge-base`
--
2.28.0.618.gf4bc123cb7
next prev parent reply other threads:[~2020-09-17 7:44 UTC|newest]
Thread overview: 58+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-05 19:08 [PATCH 0/4] builtin/diff: learn --merge-base Denton Liu
2020-09-05 19:08 ` [PATCH 1/4] t4068: remove unnecessary >tmp Denton Liu
2020-09-05 19:08 ` [PATCH 2/4] git-diff.txt: backtick quote command text Denton Liu
2020-09-05 19:08 ` [PATCH 3/4] builtin/diff: parse --no-index using parse_options() Denton Liu
2020-09-05 19:08 ` [PATCH 4/4] builtin/diff: learn --merge-base Denton Liu
2020-09-06 21:58 ` Junio C Hamano
2020-09-10 7:32 ` [PATCH v2 0/4] " Denton Liu
2020-09-10 7:32 ` [PATCH v2 1/4] t4068: remove unnecessary >tmp Denton Liu
2020-09-10 7:32 ` [PATCH v2 2/4] git-diff.txt: backtick quote command text Denton Liu
2020-09-10 7:32 ` [PATCH v2 3/4] builtin/diff: parse --no-index using parse_options() Denton Liu
2020-09-10 18:35 ` Junio C Hamano
2020-09-13 8:31 ` Denton Liu
2020-09-13 21:45 ` Junio C Hamano
2020-09-10 7:32 ` [PATCH v2 4/4] builtin/diff: learn --merge-base Denton Liu
2020-09-17 7:44 ` Denton Liu [this message]
2020-09-17 7:44 ` [PATCH v3 01/10] t4068: remove unnecessary >tmp Denton Liu
2020-09-17 7:44 ` [PATCH v3 02/10] git-diff-index.txt: make --cached description a proper sentence Denton Liu
2020-09-17 7:44 ` [PATCH v3 03/10] git-diff.txt: backtick quote command text Denton Liu
2020-09-17 7:44 ` [PATCH v3 04/10] contrib/completion: extract common diff/difftool options Denton Liu
2020-09-17 7:44 ` [PATCH v3 05/10] diff-lib: accept option flags in run_diff_index() Denton Liu
2020-09-17 17:00 ` Junio C Hamano
2020-09-17 7:44 ` [PATCH v3 06/10] diff-lib: define diff_get_merge_base() Denton Liu
2020-09-17 17:16 ` Junio C Hamano
2020-09-18 10:34 ` Denton Liu
2020-09-19 0:33 ` Junio C Hamano
2020-09-17 7:44 ` [PATCH v3 07/10] t4068: add --merge-base tests Denton Liu
2020-09-17 7:44 ` [PATCH v3 08/10] builtin/diff-index: learn --merge-base Denton Liu
2020-09-17 17:28 ` Junio C Hamano
2020-09-17 18:13 ` Jeff King
2020-09-18 5:11 ` Junio C Hamano
2020-09-18 18:12 ` Jeff King
2020-09-17 7:44 ` [PATCH v3 09/10] builtin/diff-tree: " Denton Liu
2020-09-17 18:23 ` Junio C Hamano
2020-09-18 10:48 ` Denton Liu
2020-09-18 16:52 ` Junio C Hamano
2020-09-20 11:01 ` Denton Liu
2020-09-21 16:05 ` Junio C Hamano
2020-09-21 17:27 ` Denton Liu
2020-09-21 21:09 ` Junio C Hamano
2020-09-21 21:19 ` Junio C Hamano
2020-09-21 21:54 ` Denton Liu
2020-09-21 22:18 ` Junio C Hamano
2020-09-23 9:47 ` Denton Liu
2020-09-25 21:02 ` Junio C Hamano
2020-09-26 1:52 ` Denton Liu
2020-09-17 7:44 ` [PATCH v3 10/10] contrib/completion: complete `git diff --merge-base` Denton Liu
2020-09-20 11:22 ` [PATCH v4 00/10] builtin/diff: learn --merge-base Denton Liu
2020-09-20 11:22 ` [PATCH v4 01/10] t4068: remove unnecessary >tmp Denton Liu
2020-09-20 11:22 ` [PATCH v4 02/10] git-diff-index.txt: make --cached description a proper sentence Denton Liu
2020-09-20 11:22 ` [PATCH v4 03/10] git-diff.txt: backtick quote command text Denton Liu
2020-09-20 11:22 ` [PATCH v4 04/10] contrib/completion: extract common diff/difftool options Denton Liu
2020-09-20 11:22 ` [PATCH v4 05/10] diff-lib: accept option flags in run_diff_index() Denton Liu
2020-09-20 11:22 ` [PATCH v4 06/10] diff-lib: define diff_get_merge_base() Denton Liu
2020-09-20 11:22 ` [PATCH v4 07/10] t4068: add --merge-base tests Denton Liu
2020-09-20 11:22 ` [PATCH v4 08/10] builtin/diff-index: learn --merge-base Denton Liu
2020-09-29 19:53 ` Martin Ågren
2020-09-20 11:22 ` [PATCH v4 09/10] builtin/diff-tree: " Denton Liu
2020-09-20 11:22 ` [PATCH v4 10/10] contrib/completion: complete `git diff --merge-base` Denton Liu
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