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Given that the diff machinery is heavily used in pathspec-limited "git log" machinery, and it is common for a path to come and go while traversing the project history, this is usually a good thing. However, in some cases, we would want to know if all the pathspec elements matched. For example, "git add -u " internally uses the machinery used by "git diff-files" to decide contents from what paths to add to the index, and as an end-user facing command, "git add -u" would want to report an unmatched pathspec element. Add a new .ps_matched member next to the .prune_data member in "struct rev_info" so that we can optionally keep track of the use of .prune_data pathspec elements that can be inspected by the caller. Signed-off-by: Junio C Hamano --- builtin/add.c | 4 ++-- builtin/checkout.c | 3 ++- builtin/commit.c | 2 +- diff-lib.c | 11 ++++++++++- read-cache-ll.h | 4 ++-- read-cache.c | 8 +++++--- revision.h | 1 + 7 files changed, 23 insertions(+), 10 deletions(-) diff --git a/builtin/add.c b/builtin/add.c index 393c10cbcf..dc4b42d0ad 100644 --- a/builtin/add.c +++ b/builtin/add.c @@ -553,8 +553,8 @@ int cmd_add(int argc, const char **argv, const char *prefix) exit_status |= renormalize_tracked_files(&pathspec, flags); else exit_status |= add_files_to_cache(the_repository, prefix, - &pathspec, include_sparse, - flags); + &pathspec, NULL, + include_sparse, flags); if (add_new_files) exit_status |= add_files(&dir, flags); diff --git a/builtin/checkout.c b/builtin/checkout.c index 2b6166c284..c297aa0e32 100644 --- a/builtin/checkout.c +++ b/builtin/checkout.c @@ -882,7 +882,8 @@ static int merge_working_tree(const struct checkout_opts *opts, * entries in the index. */ - add_files_to_cache(the_repository, NULL, NULL, 0, 0); + add_files_to_cache(the_repository, NULL, NULL, NULL, 0, + 0); init_merge_options(&o, the_repository); o.verbosity = 0; work = write_in_core_index_as_tree(the_repository); diff --git a/builtin/commit.c b/builtin/commit.c index b27b56c8be..8f31decc6b 100644 --- a/builtin/commit.c +++ b/builtin/commit.c @@ -444,7 +444,7 @@ static const char *prepare_index(const char **argv, const char *prefix, repo_hold_locked_index(the_repository, &index_lock, LOCK_DIE_ON_ERROR); add_files_to_cache(the_repository, also ? prefix : NULL, - &pathspec, 0, 0); + &pathspec, NULL, 0, 0); refresh_cache_or_die(refresh_flags); cache_tree_update(&the_index, WRITE_TREE_SILENT); if (write_locked_index(&the_index, &index_lock, 0)) diff --git a/diff-lib.c b/diff-lib.c index 1cd790a4d2..683f11e509 100644 --- a/diff-lib.c +++ b/diff-lib.c @@ -127,7 +127,16 @@ void run_diff_files(struct rev_info *revs, unsigned int option) if (diff_can_quit_early(&revs->diffopt)) break; - if (!ce_path_match(istate, ce, &revs->prune_data, NULL)) + /* + * NEEDSWORK: + * Here we filter with pathspec but the result is further + * filtered out when --relative is in effect. To end-users, + * a pathspec element that matched only to paths outside the + * current directory is like not matching anything at all; + * the handling of ps_matched[] here may become problematic + * if/when we add the "--error-unmatch" option to "git diff". + */ + if (!ce_path_match(istate, ce, &revs->prune_data, revs->ps_matched)) continue; if (revs->diffopt.prefix && diff --git a/read-cache-ll.h b/read-cache-ll.h index 2a50a784f0..09414afd04 100644 --- a/read-cache-ll.h +++ b/read-cache-ll.h @@ -480,8 +480,8 @@ extern int verify_ce_order; int cmp_cache_name_compare(const void *a_, const void *b_); int add_files_to_cache(struct repository *repo, const char *prefix, - const struct pathspec *pathspec, int include_sparse, - int flags); + const struct pathspec *pathspec, char *ps_matched, + int include_sparse, int flags); void overlay_tree_on_index(struct index_state *istate, const char *tree_name, const char *prefix); diff --git a/read-cache.c b/read-cache.c index f546cf7875..e1723ad796 100644 --- a/read-cache.c +++ b/read-cache.c @@ -3958,8 +3958,8 @@ static void update_callback(struct diff_queue_struct *q, } int add_files_to_cache(struct repository *repo, const char *prefix, - const struct pathspec *pathspec, int include_sparse, - int flags) + const struct pathspec *pathspec, char *ps_matched, + int include_sparse, int flags) { struct update_callback_data data; struct rev_info rev; @@ -3971,8 +3971,10 @@ int add_files_to_cache(struct repository *repo, const char *prefix, repo_init_revisions(repo, &rev, prefix); setup_revisions(0, NULL, &rev, NULL); - if (pathspec) + if (pathspec) { copy_pathspec(&rev.prune_data, pathspec); + rev.ps_matched = ps_matched; + } rev.diffopt.output_format = DIFF_FORMAT_CALLBACK; rev.diffopt.format_callback = update_callback; rev.diffopt.format_callback_data = &data; diff --git a/revision.h b/revision.h index 94c43138bc..0e470d1df1 100644 --- a/revision.h +++ b/revision.h @@ -142,6 +142,7 @@ struct rev_info { /* Basic information */ const char *prefix; const char *def; + char *ps_matched; /* optionally record matches of prune_data */ struct pathspec prune_data; /*