diff: remove "diff-files -q" in a version of Git in a distant future

This was inherited from "show-diff -q" that was invented to tell
comparison between the index and the working tree to ignore only
removals in 2005.

These days, it is spelled as "--diff-filter=d".

Signed-off-by: Junio C Hamano <gitster@pobox.com>

4 files changed, 0 insertions, 21 deletions

diff --git a/diff-lib.c b/diff-lib.c
index 4634b29..872643f 100644
--- a/diff-lib.c
+++ b/diff-lib.c
@@ -89,9 +89,6 @@ int run_diff_files(struct rev_info *revs, unsigned int option)
 	unsigned ce_option = ((option & DIFF_RACY_IS_MODIFIED)
 			      ? CE_MATCH_RACY_IS_DIRTY : 0);
 
-	if (option & DIFF_SILENT_ON_REMOVED)
-		handle_deprecated_show_diff_q(&revs->diffopt);
-
 	diff_set_mnemonic_prefix(&revs->diffopt, "i/", "w/");
 
 	if (diff_unmerged_stage < 0)
diff --git a/diff-no-index.c b/diff-no-index.c
index a788a5f..98a9cf1 100644
--- a/diff-no-index.c
+++ b/diff-no-index.c
@@ -187,7 +187,6 @@ void diff_no_index(struct rev_info *revs,
 {
 	int i, prefixlen;
 	int no_index = 0;
-	unsigned deprecated_show_diff_q_option_used = 0;
 	const char *paths[2];
 
 	/* Were we asked to do --no-index explicitly? */
@@ -224,10 +223,6 @@ void diff_no_index(struct rev_info *revs,
 		int j;
 		if (!strcmp(argv[i], "--no-index"))
 			i++;
-		else if (!strcmp(argv[i], "-q")) {
-			deprecated_show_diff_q_option_used = 1;
-			i++;
-		}
 		else if (!strcmp(argv[i], "--"))
 			i++;
 		else {
@@ -260,9 +255,6 @@ 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);
 
diff --git a/diff.c b/diff.c
index 78819ba..2d0b5e3 100644
--- a/diff.c
+++ b/diff.c
@@ -3570,14 +3570,6 @@ static int parse_diff_filter_opt(const char *optarg, struct diff_options *opt)
 	return 0;
 }
 
-/* Used only by "diff-files" and "diff --no-index" */
-void handle_deprecated_show_diff_q(struct diff_options *opt)
-{
-	warning("'diff -q' and 'diff-files -q' are deprecated.");
-	warning("Use 'diff --diff-filter=d' instead to ignore deleted filepairs.");
-	parse_diff_filter_opt("d", opt);
-}
-
 int diff_opt_parse(struct diff_options *options, const char **av, int ac)
 {
 	const char *arg = av[0];
diff --git a/diff.h b/diff.h
index 5237d63..a367207 100644
--- a/diff.h
+++ b/diff.h
@@ -341,8 +341,6 @@ extern int parse_rename_score(const char **cp_p);
 
 extern long parse_algorithm_value(const char *value);
 
-extern void handle_deprecated_show_diff_q(struct diff_options *);
-
 extern int print_stat_summary(FILE *fp, int files,
 			      int insertions, int deletions);
 extern void setup_diff_pager(struct diff_options *);