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diff-index: restore -c/--cc options handling

This fixes 19b2517f (diff-merges: move specific diff-index "-m"
handling to diff-index, 2021-05-21).

That commit disabled handling of all diff for merges options in
diff-index on an assumption that they are unused. However, it later
appeared that -c and --cc, even though undocumented and not being
covered by tests, happen to have had particular effect on diff-index
output.

Restore original -c/--cc options handling by diff-index.

Signed-off-by: Sergey Organov <sorganov@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
pull/1093/head
Sergey Organov 11 months ago committed by Junio C Hamano
parent
commit
5acffd3473
  1. 6
      builtin/diff-index.c
  2. 14
      diff-merges.c
  3. 2
      diff-merges.h

6
builtin/diff-index.c

@ -29,10 +29,10 @@ int cmd_diff_index(int argc, const char **argv, const char *prefix)
prefix = precompose_argv_prefix(argc, argv, prefix);
/*
* We need no diff for merges options, and we need to avoid conflict
* with our own meaning of "-m".
* We need (some of) diff for merges options (e.g., --cc), and we need
* to avoid conflict with our own meaning of "-m".
*/
diff_merges_suppress_options_parsing();
diff_merges_suppress_m_parsing();
argc = setup_revisions(argc, argv, &rev, NULL);
for (i = 1; i < argc; i++) {

14
diff-merges.c

@ -6,7 +6,7 @@ typedef void (*diff_merges_setup_func_t)(struct rev_info *);
static void set_separate(struct rev_info *revs);
static diff_merges_setup_func_t set_to_default = set_separate;
static int suppress_parsing;
static int suppress_m_parsing;
static void suppress(struct rev_info *revs)
{
@ -91,9 +91,9 @@ int diff_merges_config(const char *value)
return 0;
}
void diff_merges_suppress_options_parsing(void)
void diff_merges_suppress_m_parsing(void)
{
suppress_parsing = 1;
suppress_m_parsing = 1;
}
int diff_merges_parse_opts(struct rev_info *revs, const char **argv)
@ -102,10 +102,7 @@ int diff_merges_parse_opts(struct rev_info *revs, const char **argv)
const char *optarg;
const char *arg = argv[0];
if (suppress_parsing)
return 0;
if (!strcmp(arg, "-m")) {
if (!suppress_m_parsing && !strcmp(arg, "-m")) {
set_to_default(revs);
} else if (!strcmp(arg, "-c")) {
set_combined(revs);
@ -153,9 +150,6 @@ void diff_merges_set_dense_combined_if_unset(struct rev_info *revs)
void diff_merges_setup_revs(struct rev_info *revs)
{
if (suppress_parsing)
return;
if (revs->combine_merges == 0)
revs->dense_combined_merges = 0;
if (revs->separate_merges == 0)

2
diff-merges.h

@ -11,7 +11,7 @@ struct rev_info;
int diff_merges_config(const char *value);
void diff_merges_suppress_options_parsing(void);
void diff_merges_suppress_m_parsing(void);
int diff_merges_parse_opts(struct rev_info *revs, const char **argv);

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