merge: make merge.renormalize work for all uses of merge machinery

The 'merge' command is not the only one that does merges; other commands
like checkout -m or rebase do as well.  Unfortunately, the only area of
the code that checked for the "merge.renormalize" config setting was in
builtin/merge.c, meaning it could only affect merges performed by the
"merge" command.  Move the handling of this config setting to
merge_recursive_config() so that other commands can benefit from it as
well.  Fixes a few tests in t6038.

Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Author: newren

builtin/checkout.c

@@ -771,13 +771,6 @@ static int merge_working_tree(const struct checkout_opts *opts,
 			 */
 
 			add_files_to_cache(NULL, NULL, 0);
-			/*
-			 * NEEDSWORK: carrying over local changes
-			 * when branches have different end-of-line
-			 * normalization (or clean+smudge rules) is
-			 * a pain; plumb in an option to set
-			 * o.renormalize?
-			 */
 			init_merge_options(&o, the_repository);
 			o.verbosity = 0;
 			work = write_in_core_index_as_tree(the_repository);

builtin/merge.c

@@ -72,7 +72,6 @@ static const char **xopts;
 static size_t xopts_nr, xopts_alloc;
 static const char *branch;
 static char *branch_mergeoptions;
-static int option_renormalize;
 static int verbosity;
 static int allow_rerere_auto;
 static int abort_current_merge;
@@ -621,8 +620,6 @@ static int git_merge_config(const char *k, const char *v, void *cb)
 		return git_config_string(&pull_octopus, k, v);
 	else if (!strcmp(k, "commit.cleanup"))
 		return git_config_string(&cleanup_arg, k, v);
-	else if (!strcmp(k, "merge.renormalize"))
-		option_renormalize = git_config_bool(k, v);
 	else if (!strcmp(k, "merge.ff")) {
 		int boolval = git_parse_maybe_bool(v);
 		if (0 <= boolval) {
@@ -721,7 +718,6 @@ static int try_merge_strategy(const char *strategy, struct commit_list *common,
 		if (!strcmp(strategy, "subtree"))
 			o.subtree_shift = "";
 
-		o.renormalize = option_renormalize;
 		o.show_rename_progress =
 			show_progress == -1 ? isatty(2) : show_progress;
 

merge-recursive.c

@@ -3791,9 +3791,12 @@ int merge_recursive_generic(struct merge_options *opt,
 static void merge_recursive_config(struct merge_options *opt)
 {
 	char *value = NULL;
+	int renormalize = 0;
 	git_config_get_int("merge.verbosity", &opt->verbosity);
 	git_config_get_int("diff.renamelimit", &opt->rename_limit);
 	git_config_get_int("merge.renamelimit", &opt->rename_limit);
+	git_config_get_bool("merge.renormalize", &renormalize);
+	opt->renormalize = renormalize;
 	if (!git_config_get_string("diff.renames", &value)) {
 		opt->detect_renames = git_config_rename("diff.renames", value);
 		free(value);

t/t6038-merge-text-auto.sh

@@ -158,7 +158,7 @@ test_expect_success 'Detect LF/CRLF conflict from addition of text=auto' '
 	compare_files expected file.fuzzy
 '
 
-test_expect_failure 'checkout -m after setting text=auto' '
+test_expect_success 'checkout -m after setting text=auto' '
 	cat <<-\EOF >expected &&
 	first line
 	same line
@@ -173,7 +173,7 @@ test_expect_failure 'checkout -m after setting text=auto' '
 	git diff --no-index --ignore-cr-at-eol expected file
 '
 
-test_expect_failure 'checkout -m addition of text=auto' '
+test_expect_success 'checkout -m addition of text=auto' '
 	cat <<-\EOF >expected &&
 	first line
 	same line