From 41de0c6fbcc3d2544ebada3a9f26dec0f32f42de Mon Sep 17 00:00:00 2001 From: Derrick Stolee Date: Fri, 24 Jan 2020 21:19:36 +0000 Subject: sparse-checkout: cone mode does not recognize "**" When core.sparseCheckoutCone is enabled, the 'git sparse-checkout set' command creates a restricted set of possible patterns that are used by a custom algorithm to quickly match those patterns. If a user manually edits the sparse-checkout file, then they could create patterns that do not match these expectations. The cone-mode matching algorithm can return incorrect results. The solution is to detect these incorrect patterns, warn that we do not recognize them, and revert to the standard algorithm. Check each pattern for the "**" substring, and revert to the old logic if seen. While technically a "//**" pattern matches the meaning of "//", it is not one that would be written by the sparse-checkout builtin in cone mode. Attempting to accept that pattern change complicates the logic and instead we punt and do not accept any instance of "**". Signed-off-by: Derrick Stolee Signed-off-by: Junio C Hamano --- dir.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) (limited to 'dir.c') diff --git a/dir.c b/dir.c index 22d08e61c2..40fed73a94 100644 --- a/dir.c +++ b/dir.c @@ -651,11 +651,16 @@ static void add_pattern_to_hashsets(struct pattern_list *pl, struct path_pattern return; } + if (strstr(given->pattern, "**")) { + /* Not a cone pattern. */ + warning(_("unrecognized pattern: '%s'"), given->pattern); + goto clear_hashmaps; + } + if (given->patternlen > 2 && !strcmp(given->pattern + given->patternlen - 2, "/*")) { if (!(given->flags & PATTERN_FLAG_NEGATIVE)) { /* Not a cone pattern. */ - pl->use_cone_patterns = 0; warning(_("unrecognized pattern: '%s'"), given->pattern); goto clear_hashmaps; } -- cgit v1.2.3