@matheusbsbs / matheus-bagliano / commits / 35a9f1e99c

tree-walk.c: don't match submodule entries for 'submod/anything'

Submodules should be handled the same as regular directories with respect to the presence of a trailing slash, i.e. commands like: git diff rev1 rev2 -- $path git rev-list HEAD -- $path should produce the same output whether $path is 'submod' or 'submod/'. This has been fixed in commit 74b4f7f277 (tree-walk.c: ignore trailing slash on submodule in tree_entry_interesting(), 2014-01-23). Unfortunately, that commit had the unintended side effect to handle 'submod/anything' the same as 'submod' and 'submod/' as well, e.g.: $ git log --oneline --name-only -- sha1collisiondetection/whatever 4125f78222 sha1dc: update from upstream sha1collisiondetection 07a20f569b Makefile: fix unaligned loads in sha1dc with UBSan sha1collisiondetection 23e37f8e9d sha1dc: update from upstream sha1collisiondetection 86cfd61e6b sha1dc: optionally use sha1collisiondetection as a submodule sha1collisiondetection Fix this by rejecting submodules as partial pathnames when their trailing slash is followed by anything. Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com> Signed-off-by: Derrick Stolee <dstolee@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>

SZEDER Gábor committed Jun 5, 2020 at 13:00 UTC 35a9f1e99c5d31635bb78a4f2d498e72c04fc471

2 files changed +11 -2

t/t4010-diff-pathspec.sh

+3 -1

index e5ca359edf..65cc703c65 100755 --- a/t/t4010-diff-pathspec.sh +++ b/t/t4010-diff-pathspec.sh @@ -125,7 +125,9 @@ test_expect_success 'setup submodules' ' test_expect_success 'diff-tree ignores trailing slash on submodule path' ' git diff --name-only HEAD^ HEAD submod >expect && git diff --name-only HEAD^ HEAD submod/ >actual && - test_cmp expect actual + test_cmp expect actual && + git diff --name-only HEAD^ HEAD -- submod/whatever >actual && + test_must_be_empty actual ' test_expect_success 'diff multiple wildcard pathspecs' '

tree-walk.c

+8 -1

index bb0ad34c54..0160294712 100644 --- a/tree-walk.c +++ b/tree-walk.c @@ -851,7 +851,14 @@ static int match_entry(const struct pathspec_item *item, if (matchlen > pathlen) { if (match[pathlen] != '/') return 0; - if (!S_ISDIR(entry->mode) && !S_ISGITLINK(entry->mode)) + /* + * Reject non-directories as partial pathnames, except + * when match is a submodule with a trailing slash and + * nothing else (to handle 'submod/' and 'submod' + * uniformly). + */ + if (!S_ISDIR(entry->mode) && + (!S_ISGITLINK(entry->mode) || matchlen > pathlen + 1)) return 0; }