[07/14] revisions: drop unused "opt" parameter in "tweak" callbacks

Commit Message

Jeff King July 3, 2023, 6:44 a.m. UTC

The setup_revision_opt struct has a "tweak" function pointer, which can
be used to adjust parameters after setup_revisions() parses arguments,
but before it finalizes setup. In addition to the rev_info struct, the
callback receives a pointer to the setup_revision_opt, as well.

But none of the existing callbacks looks at the extra "opt" parameter,
leading to -Wunused-parameter warnings.

We could mark it as UNUSED, but instead let's remove it entirely. It's
conceivable that it could be useful for a callback to have access to the
"opt" struct. But in the 13 years that this mechanism has existed,
nobody has used it. So let's just drop it in the name of simplifying.

Signed-off-by: Jeff King <[e-mail]>
---
 builtin/diff-tree.c | 2 +-
 builtin/log.c       | 6 ++----
 revision.c          | 2 +-
 revision.h          | 2 +-
 4 files changed, 5 insertions(+), 7 deletions(-)

Patch

diff --git a/builtin/diff-tree.c b/builtin/diff-tree.c
index d62caa6c8b..c9ba35f143 100644
--- a/builtin/diff-tree.c
+++ b/builtin/diff-tree.c
@@ -99,7 +99,7 @@  static const char diff_tree_usage[] =
 "  --root        include the initial commit as diff against /dev/null\n"
 COMMON_DIFF_OPTIONS_HELP;
 
-static void diff_tree_tweak_rev(struct rev_info *rev, struct setup_revision_opt *opt)
+static void diff_tree_tweak_rev(struct rev_info *rev)
 {
 	if (!rev->diffopt.output_format) {
 		if (rev->dense_combined_merges)
diff --git a/builtin/log.c b/builtin/log.c
index 89442dceda..91bc7d967e 100644
--- a/builtin/log.c
+++ b/builtin/log.c
@@ -718,8 +718,7 @@  static int show_tree_object(const struct object_id *oid UNUSED,
 	return 0;
 }
 
-static void show_setup_revisions_tweak(struct rev_info *rev,
-				       struct setup_revision_opt *opt)
+static void show_setup_revisions_tweak(struct rev_info *rev)
 {
 	if (rev->first_parent_only)
 		diff_merges_default_to_first_parent(rev);
@@ -862,8 +861,7 @@  int cmd_log_reflog(int argc, const char **argv, const char *prefix)
 	return cmd_log_deinit(cmd_log_walk(&rev), &rev);
 }
 
-static void log_setup_revisions_tweak(struct rev_info *rev,
-				      struct setup_revision_opt *opt)
+static void log_setup_revisions_tweak(struct rev_info *rev)
 {
 	if (rev->diffopt.flags.default_follow_renames &&
 	    diff_check_follow_pathspec(&rev->prune_data, 0))
diff --git a/revision.c b/revision.c
index 84768565ce..73f8c7e2e0 100644
--- a/revision.c
+++ b/revision.c
@@ -2955,7 +2955,7 @@  int setup_revisions(int argc, const char **argv, struct rev_info *revs, struct s
 	if (!revs->def)
 		revs->def = opt ? opt->def : NULL;
 	if (opt && opt->tweak)
-		opt->tweak(revs, opt);
+		opt->tweak(revs);
 	if (revs->show_merge)
 		prepare_show_merge(revs);
 	if (revs->def && !revs->pending.nr && !revs->rev_input_given) {
diff --git a/revision.h b/revision.h
index 25776af381..18f49565c2 100644
--- a/revision.h
+++ b/revision.h
@@ -428,7 +428,7 @@  void repo_init_revisions(struct repository *r,
  */
 struct setup_revision_opt {
 	const char *def;
-	void (*tweak)(struct rev_info *, struct setup_revision_opt *);
+	void (*tweak)(struct rev_info *);
 	unsigned int	assume_dashdash:1,
 			allow_exclude_promisor_objects:1,
 			free_removed_argv_elements:1;