git/diff.c, branch v2.30.2

Merge branch 'jc/diff-I-status-fix'

2020-12-18T23:15:18Z

"git diff -I -exit-code" should exit with 0 status when all the changes match the ignored pattern, but it didn't. * jc/diff-I-status-fix: diff: correct interaction between --exit-code and -I

diff: correct interaction between --exit-code and -I

2020-12-17T01:33:26Z

Just like "git diff -w --exit-code" should exit with 0 when ignoring whitespace differences results in no changes shown, if ignoring certain changes with "git diff -I --exit-code" result in an empty patch, we should exit with 0. The test suite did not cover the interaction between "--exit-code" and "-w"; add one while adding a new test for "--exit-code" + "-I". Signed-off-by: Junio C Hamano

Merge branch 'en/strmap'

2020-11-21T23:14:38Z

A specialization of hashmap that uses a string as key has been introduced. Hopefully it will see wider use over time. * en/strmap: shortlog: use strset from strmap.h Use new HASHMAP_INIT macro to simplify hashmap initialization strmap: take advantage of FLEXPTR_ALLOC_STR when relevant strmap: enable allocations to come from a mem_pool strmap: add a strset sub-type strmap: split create_entry() out of strmap_put() strmap: add functions facilitating use as a string->int map strmap: enable faster clearing and reusing of strmaps strmap: add more utility functions strmap: new utility functions hashmap: provide deallocation function names hashmap: introduce a new hashmap_partial_clear() hashmap: allow re-use after hashmap_free() hashmap: adjust spacing to fix argument alignment hashmap: add usage documentation explaining hashmap_free[_entries]()

Merge branch 'jk/diff-release-filespec-fix'

2020-11-21T23:14:38Z

Running "git diff" while allowing external diff in a state with unmerged paths used to segfault, which has been corrected. * jk/diff-release-filespec-fix: t7800: simplify difftool test diff: allow passing NULL to diff_free_filespec_data()

diff: allow passing NULL to diff_free_filespec_data()

2020-11-06T19:37:07Z

Commit 3aef54e8b8 ("diff: munmap() file contents before running external diff") introduced calls to diff_free_filespec_data in run_external_diff, which may pass NULL pointers. Fix this and prevent any such bugs in the future by making `diff_free_filespec_data(NULL)` a no-op. Fixes: 3aef54e8b8 ("diff: munmap() file contents before running external diff") Signed-off-by: Jinoh Kang Signed-off-by: Junio C Hamano

Merge branch 'mk/diff-ignore-regex'

2020-11-02T21:17:44Z

"git diff" family of commands learned the "-I" option to ignore hunks whose changed lines all match the given pattern. * mk/diff-ignore-regex: diff: add -I that ignores matching changes merge-base, xdiff: zero out xpparam_t structures

hashmap: provide deallocation function names

2020-11-02T20:15:50Z

hashmap_free(), hashmap_free_entries(), and hashmap_free_() have existed for a while, but aren't necessarily the clearest names, especially with hashmap_partial_clear() being added to the mix and lazy-initialization now being supported. Peff suggested we adopt the following names[1]: - hashmap_clear() - remove all entries and de-allocate any hashmap-specific data, but be ready for reuse - hashmap_clear_and_free() - ditto, but free the entries themselves - hashmap_partial_clear() - remove all entries but don't deallocate table - hashmap_partial_clear_and_free() - ditto, but free the entries This patch provides the new names and converts all existing callers over to the new naming scheme. [1] https://lore.kernel.org/git/20201030125059.GA3277724@coredump.intra.peff.net/ Signed-off-by: Elijah Newren Signed-off-by: Junio C Hamano

diff: add -I that ignores matching changes

2020-10-20T19:53:26Z

Add 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/--ignore-matching-lines 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. Use the 'ignore' field of xdchange_t for marking a change as ignored or not. Since the same field is used by --ignore-blank-lines, identical hunk emitting rules apply for --ignore-blank-lines and -I. These two options can also be used together in the same git invocation (they are complementary to each other). 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". Signed-off-by: Michał Kępień Signed-off-by: Junio C Hamano

diff: fix modified lines stats with --stat and --numstat

2020-09-24T19:31:45Z

Only skip diffstats when both oids are valid and identical. This check was causing both false-positives (files included in diffstats with no actual changes (0 lines modified) and false-negatives (showing 0 lines modified in stats when files had actually changed). Also replaced same_contents with may_differ to avoid confusion. Signed-off-by: Thomas Guyot-Sionnest Signed-off-by: Junio C Hamano

Merge branch 'jc/quote-path-cleanup'

2020-09-19T00:58:04Z

"git status --short" quoted a path with SP in it when tracked, but not those that are untracked, ignored or unmerged. They are all shown quoted consistently. * jc/quote-path-cleanup: quote: turn 'nodq' parameter into a set of flags quote: rename misnamed sq_lookup[] to cq_lookup[] wt-status: consistently quote paths in "status --short" output quote_path: code clarification quote_path: optionally allow quoting a path with SP in it quote_path: give flags parameter to quote_path() quote_path: rename quote_path_relative() to quote_path()