Merge branch 'jc/diff-filter-negation'

Teach "git diff --diff-filter" to express "I do not want to see
these classes of changes" more directly by listing only the
unwanted ones in lowercase (e.g. "--diff-filter=d" will show
everything but deletion) and deprecate "diff-files -q" which did
the same thing as "--diff-filter=d".

* jc/diff-filter-negation:
  diff: deprecate -q option to diff-files
  diff: allow lowercase letter to specify what change class to exclude
  diff: reject unknown change class given to --diff-filter
  diff: preparse --diff-filter string argument
  diff: factor out match_filter()
  diff: pass the whole diff_options to diffcore_apply_filter()

1 files changed, 5 insertions, 2 deletions

diff --git a/diff-no-index.c b/diff-no-index.c
index e66fdf3..e301aaf 100644
--- a/diff-no-index.c
+++ b/diff-no-index.c
@@ -187,7 +187,7 @@ void diff_no_index(struct rev_info *revs,
 {
 	int i, prefixlen;
 	int no_index = 0;
-	unsigned options = 0;
+	unsigned deprecated_show_diff_q_option_used = 0;
 	const char *paths[2];
 
 	/* Were we asked to do --no-index explicitly? */
@@ -225,7 +225,7 @@ void diff_no_index(struct rev_info *revs,
 		if (!strcmp(argv[i], "--no-index"))
 			i++;
 		else if (!strcmp(argv[i], "-q")) {
-			options |= DIFF_SILENT_ON_REMOVED;
+			deprecated_show_diff_q_option_used = 1;
 			i++;
 		}
 		else if (!strcmp(argv[i], "--"))
@@ -260,6 +260,9 @@ void diff_no_index(struct rev_info *revs,
 	revs->max_count = -2;
 	diff_setup_done(&revs->diffopt);
 
+	if (deprecated_show_diff_q_option_used)
+		handle_deprecated_show_diff_q(&revs->diffopt);
+
 	setup_diff_pager(&revs->diffopt);
 	DIFF_OPT_SET(&revs->diffopt, EXIT_WITH_STATUS);