[PATCH v2 1/3] diff: factor out add_diff_options()

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Add a function for appending the parseopts member of struct diff_options
to a struct option array.  Use it in two sites instead of accessing the
parseopts member directly.  Decoupling callers from diff internals like
that allows us to change the latter.

Signed-off-by: René Scharfe <l.s.r@xxxxxx>
---
 builtin/range-diff.c | 2 +-
 diff-no-index.c      | 3 +--
 diff.c               | 6 ++++++
 diff.h               | 1 +
 4 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/builtin/range-diff.c b/builtin/range-diff.c
index e2a74efb42..aecfae12d3 100644
--- a/builtin/range-diff.c
+++ b/builtin/range-diff.c
@@ -47,7 +47,7 @@ int cmd_range_diff(int argc, const char **argv, const char *prefix)

 	repo_diff_setup(the_repository, &diffopt);

-	options = parse_options_concat(range_diff_options, diffopt.parseopts);
+	options = add_diff_options(range_diff_options, &diffopt);
 	argc = parse_options(argc, argv, prefix, options,
 			     builtin_range_diff_usage, PARSE_OPT_KEEP_DASHDASH);

diff --git a/diff-no-index.c b/diff-no-index.c
index 18edbdf4b5..05fafd0019 100644
--- a/diff-no-index.c
+++ b/diff-no-index.c
@@ -255,8 +255,7 @@ int diff_no_index(struct rev_info *revs,
 	};
 	struct option *options;

-	options = parse_options_concat(no_index_options,
-				       revs->diffopt.parseopts);
+	options = add_diff_options(no_index_options, &revs->diffopt);
 	argc = parse_options(argc, argv, revs->prefix, options,
 			     diff_no_index_usage, 0);
 	if (argc != 2) {
diff --git a/diff.c b/diff.c
index 1054a4b732..e01129f0ea 100644
--- a/diff.c
+++ b/diff.c
@@ -5693,6 +5693,12 @@ static void prep_parse_options(struct diff_options *options)
 	memcpy(options->parseopts, parseopts, sizeof(parseopts));
 }

+struct option *add_diff_options(const struct option *parseopts,
+				struct diff_options *options)
+{
+	return parse_options_concat(parseopts, options->parseopts);
+}
+
 int diff_opt_parse(struct diff_options *options,
 		   const char **av, int ac, const char *prefix)
 {
diff --git a/diff.h b/diff.h
index fd33caeb25..c20a1ad76d 100644
--- a/diff.h
+++ b/diff.h
@@ -539,6 +539,7 @@ int git_diff_ui_config(const char *var, const char *value, void *cb);
 #define diff_setup(diffopts) repo_diff_setup(the_repository, diffopts)
 #endif
 void repo_diff_setup(struct repository *, struct diff_options *);
+struct option *add_diff_options(const struct option *, struct diff_options *);
 int diff_opt_parse(struct diff_options *, const char **, int, const char *);
 void diff_setup_done(struct diff_options *);
 int git_config_rename(const char *var, const char *value);
--
2.38.1




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