From: "Michał Kępień" <michal@isc.org>
To: git@vger.kernel.org
Subject: [PATCH v2 0/3] diff: add -I<regex> that ignores matching changes
Date: Mon, 12 Oct 2020 11:17:48 +0200 [thread overview]
Message-ID: <20201012091751.19594-1-michal@isc.org> (raw)
In-Reply-To: <20201001120606.25773-1-michal@isc.org>
This patch series adds a new diff option that enables ignoring changes
whose all lines (changed, removed, and added) match a given regular
expression. This is similar to the -I option in standalone diff
utilities and can be used e.g. to ignore changes which only affect code
comments or to look for unrelated changes in commits containing a large
number of automatically applied modifications (e.g. a tree-wide string
replacement). The difference between -G/-S and the new -I option is
that the latter filters output on a per-change basis.
Changes from v1:
- Add a new preliminary cleanup patch which ensures xpparam_t
structures are always zero-initialized. (This was a prerequisite
for the next change below.)
- Do not add a new 'xdl_opts' flag to check whether -I was used;
instead, just check whether the array of regular expressions to
match against is non-NULL.
- Enable the -I option to be used multiple times. As a consequence of
this, regular expressions are now "pre-compiled" in the option's
callback (and passed around as an array of regex_t structures)
rather than deep down in xdiff code. Add test cases exercising use
of multiple -I options in the same git invocation. Update
documentation accordingly.
- Rename xdl_mark_ignorable() to xdl_mark_ignorable_lines(), to
indicate that it is logically a "sibling" of
xdl_mark_ignorable_regex() rather than its "parent".
- Optimize xdl_mark_ignorable_regex() by making it immediately skip
changes already marked as ignored by xdl_mark_ignorable_lines().
- Fix coding style issue in the prototype part of the definition of
xdl_mark_ignorable_regex().
- Add "/* see Documentation/diff-options.txt */" comments for the
fields added to struct diff_options and xpparam_t, mimicking the
comments used for 'anchors', 'anchors_nr', and 'anchors_alloc'.
- Revise commit log messages to reflect all of the above.
Michał Kępień (3):
merge-base, xdiff: zero out xpparam_t structures
diff: add -I<regex> that ignores matching changes
t: add -I<regex> tests
Documentation/diff-options.txt | 4 +
builtin/merge-tree.c | 1 +
diff.c | 23 ++
diff.h | 4 +
t/t4069-diff-ignore-regex.sh | 426 +++++++++++++++++++++++++++++++++
xdiff/xdiff.h | 4 +
xdiff/xdiffi.c | 47 +++-
xdiff/xhistogram.c | 2 +
xdiff/xpatience.c | 2 +
9 files changed, 511 insertions(+), 2 deletions(-)
create mode 100755 t/t4069-diff-ignore-regex.sh
--
2.28.0
next prev parent reply other threads:[~2020-10-12 9:18 UTC|newest]
Thread overview: 57+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-01 12:06 [PATCH 0/2] diff: add -I<regex> that ignores matching changes Michał Kępień
2020-10-01 12:06 ` [PATCH 1/2] " Michał Kępień
2020-10-01 18:21 ` Junio C Hamano
2020-10-07 19:48 ` Michał Kępień
2020-10-07 20:08 ` Junio C Hamano
2020-10-01 12:06 ` [PATCH 2/2] t: add -I<regex> tests Michał Kępień
2020-10-01 17:02 ` [PATCH 0/2] diff: add -I<regex> that ignores matching changes Junio C Hamano
2020-10-12 9:17 ` Michał Kępień [this message]
2020-10-12 9:17 ` [PATCH v2 1/3] merge-base, xdiff: zero out xpparam_t structures Michał Kępień
2020-10-12 11:14 ` Johannes Schindelin
2020-10-12 17:09 ` Junio C Hamano
2020-10-12 19:52 ` Junio C Hamano
2020-10-13 6:35 ` Michał Kępień
2020-10-12 9:17 ` [PATCH v2 2/3] diff: add -I<regex> that ignores matching changes Michał Kępień
2020-10-12 11:20 ` Johannes Schindelin
2020-10-12 20:00 ` Junio C Hamano
2020-10-12 20:39 ` Johannes Schindelin
2020-10-12 21:43 ` Junio C Hamano
2020-10-13 6:37 ` Michał Kępień
2020-10-13 15:49 ` Junio C Hamano
2020-10-13 6:36 ` Michał Kępień
2020-10-13 12:02 ` Johannes Schindelin
2020-10-13 15:53 ` Junio C Hamano
2020-10-13 18:45 ` Michał Kępień
2020-10-12 18:01 ` Junio C Hamano
2020-10-13 6:38 ` Michał Kępień
2020-10-12 20:04 ` Junio C Hamano
2020-10-13 6:38 ` Michał Kępień
2020-10-12 9:17 ` [PATCH v2 3/3] t: add -I<regex> tests Michał Kępień
2020-10-12 11:49 ` Johannes Schindelin
2020-10-13 6:38 ` Michał Kępień
2020-10-13 12:00 ` Johannes Schindelin
2020-10-13 16:00 ` Junio C Hamano
2020-10-13 19:01 ` Michał Kępień
2020-10-15 11:45 ` Johannes Schindelin
2020-10-15 7:24 ` [PATCH v3 0/2] diff: add -I<regex> that ignores matching changes Michał Kępień
2020-10-15 7:24 ` [PATCH v3 1/2] merge-base, xdiff: zero out xpparam_t structures Michał Kępień
2020-10-15 7:24 ` [PATCH v3 2/2] diff: add -I<regex> that ignores matching changes Michał Kępień
2020-10-16 15:32 ` Phillip Wood
2020-10-16 18:04 ` Junio C Hamano
2020-10-19 9:48 ` Michał Kępień
2020-10-16 18:16 ` Junio C Hamano
2020-10-19 9:55 ` Michał Kępień
2020-10-19 17:29 ` Junio C Hamano
2020-10-16 10:00 ` [PATCH v3 0/2] " Johannes Schindelin
2020-10-20 6:48 ` [PATCH v4 " Michał Kępień
2020-10-20 6:48 ` [PATCH v4 1/2] merge-base, xdiff: zero out xpparam_t structures Michał Kępień
2020-10-20 6:48 ` [PATCH v4 2/2] diff: add -I<regex> that ignores matching changes Michał Kępień
2021-02-05 14:13 ` [PATCH 1/2] diff: add an API for deferred freeing Ævar Arnfjörð Bjarmason
2021-02-10 16:00 ` Johannes Schindelin
2021-02-11 3:00 ` Ævar Arnfjörð Bjarmason
2021-02-11 9:40 ` Johannes Schindelin
2021-02-11 10:21 ` Jeff King
2021-02-11 10:45 ` [PATCH v2 0/2] " Ævar Arnfjörð Bjarmason
2021-02-11 10:45 ` [PATCH v2 1/2] " Ævar Arnfjörð Bjarmason
2021-02-11 10:45 ` [PATCH v2 2/2] diff: plug memory leak from regcomp() on {log,diff} -I Ævar Arnfjörð Bjarmason
2021-02-05 14:13 ` [PATCH " Ævar Arnfjörð Bjarmason
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