Merge branch 'ds/config-literal-value'

Various subcommands of "git config" that takes value_regex
learn the "--literal-value" option to take the value_regex option
as a literal string.

* ds/config-literal-value:
  config doc: value-pattern is not necessarily a regexp
  config: implement --fixed-value with --get*
  config: plumb --fixed-value into config API
  config: add --fixed-value option, un-implemented
  t1300: add test for --replace-all with value-pattern
  t1300: test "set all" mode with value-pattern
  config: replace 'value_regex' with 'value_pattern'
  config: convert multi_replace to flags

3 files changed, 72 insertions, 21 deletions

diff --git a/builtin/branch.c b/builtin/branch.c
index efb30b8820..173b736dff 100644
--- a/builtin/branch.c
+++ b/builtin/branch.c
@@ -829,10 +829,10 @@ int cmd_branch(int argc, const char **argv, const char *prefix)
 			die(_("Branch '%s' has no upstream information"), branch->name);
 
 		strbuf_addf(&buf, "branch.%s.remote", branch->name);
-		git_config_set_multivar(buf.buf, NULL, NULL, 1);
+		git_config_set_multivar(buf.buf, NULL, NULL, CONFIG_FLAGS_MULTI_REPLACE);
 		strbuf_reset(&buf);
 		strbuf_addf(&buf, "branch.%s.merge", branch->name);
-		git_config_set_multivar(buf.buf, NULL, NULL, 1);
+		git_config_set_multivar(buf.buf, NULL, NULL, CONFIG_FLAGS_MULTI_REPLACE);
 		strbuf_release(&buf);
 	} else if (argc > 0 && argc <= 2) {
 		if (filter.kind != FILTER_REFS_BRANCHES)
diff --git a/builtin/config.c b/builtin/config.c
index 963d65fd3f..f71fa39b38 100644
--- a/builtin/config.c
+++ b/builtin/config.c
@@ -14,6 +14,7 @@ static const char *const builtin_config_usage[] = {
 
 static char *key;
 static regex_t *key_regexp;
+static const char *value_pattern;
 static regex_t *regexp;
 static int show_keys;
 static int omit_values;
@@ -34,6 +35,7 @@ static int respect_includes_opt = -1;
 static struct config_options config_options;
 static int show_origin;
 static int show_scope;
+static int fixed_value;
 
 #define ACTION_GET (1<<0)
 #define ACTION_GET_ALL (1<<1)
@@ -133,17 +135,18 @@ static struct option builtin_config_options[] = {
 	OPT_STRING('f', "file", &given_config_source.file, N_("file"), N_("use given config file")),
 	OPT_STRING(0, "blob", &given_config_source.blob, N_("blob-id"), N_("read config from given blob object")),
 	OPT_GROUP(N_("Action")),
-	OPT_BIT(0, "get", &actions, N_("get value: name [value-regex]"), ACTION_GET),
-	OPT_BIT(0, "get-all", &actions, N_("get all values: key [value-regex]"), ACTION_GET_ALL),
-	OPT_BIT(0, "get-regexp", &actions, N_("get values for regexp: name-regex [value-regex]"), ACTION_GET_REGEXP),
+	OPT_BIT(0, "get", &actions, N_("get value: name [value-pattern]"), ACTION_GET),
+	OPT_BIT(0, "get-all", &actions, N_("get all values: key [value-pattern]"), ACTION_GET_ALL),
+	OPT_BIT(0, "get-regexp", &actions, N_("get values for regexp: name-regex [value-pattern]"), ACTION_GET_REGEXP),
 	OPT_BIT(0, "get-urlmatch", &actions, N_("get value specific for the URL: section[.var] URL"), ACTION_GET_URLMATCH),
-	OPT_BIT(0, "replace-all", &actions, N_("replace all matching variables: name value [value_regex]"), ACTION_REPLACE_ALL),
+	OPT_BIT(0, "replace-all", &actions, N_("replace all matching variables: name value [value-pattern]"), ACTION_REPLACE_ALL),
 	OPT_BIT(0, "add", &actions, N_("add a new variable: name value"), ACTION_ADD),
-	OPT_BIT(0, "unset", &actions, N_("remove a variable: name [value-regex]"), ACTION_UNSET),
-	OPT_BIT(0, "unset-all", &actions, N_("remove all matches: name [value-regex]"), ACTION_UNSET_ALL),
+	OPT_BIT(0, "unset", &actions, N_("remove a variable: name [value-pattern]"), ACTION_UNSET),
+	OPT_BIT(0, "unset-all", &actions, N_("remove all matches: name [value-pattern]"), ACTION_UNSET_ALL),
 	OPT_BIT(0, "rename-section", &actions, N_("rename section: old-name new-name"), ACTION_RENAME_SECTION),
 	OPT_BIT(0, "remove-section", &actions, N_("remove a section: name"), ACTION_REMOVE_SECTION),
 	OPT_BIT('l', "list", &actions, N_("list all"), ACTION_LIST),
+	OPT_BOOL(0, "fixed-value", &fixed_value, N_("use string equality when comparing values to 'value-pattern'")),
 	OPT_BIT('e', "edit", &actions, N_("open an editor"), ACTION_EDIT),
 	OPT_BIT(0, "get-color", &actions, N_("find the color configured: slot [default]"), ACTION_GET_COLOR),
 	OPT_BIT(0, "get-colorbool", &actions, N_("find the color setting: slot [stdout-is-tty]"), ACTION_GET_COLORBOOL),
@@ -296,6 +299,8 @@ static int collect_config(const char *key_, const char *value_, void *cb)
 		return 0;
 	if (use_key_regexp && regexec(key_regexp, key_, 0, NULL, 0))
 		return 0;
+	if (fixed_value && strcmp(value_pattern, (value_?value_:"")))
+		return 0;
 	if (regexp != NULL &&
 	    (do_not_match ^ !!regexec(regexp, (value_?value_:""), 0, NULL, 0)))
 		return 0;
@@ -306,7 +311,7 @@ static int collect_config(const char *key_, const char *value_, void *cb)
 	return format_config(&values->items[values->nr++], key_, value_);
 }
 
-static int get_value(const char *key_, const char *regex_)
+static int get_value(const char *key_, const char *regex_, unsigned flags)
 {
 	int ret = CONFIG_GENERIC_ERROR;
 	struct strbuf_list values = {NULL};
@@ -343,7 +348,9 @@ static int get_value(const char *key_, const char *regex_)
 		}
 	}
 
-	if (regex_) {
+	if (regex_ && (flags & CONFIG_FLAGS_FIXED_VALUE))
+		value_pattern = regex_;
+	else if (regex_) {
 		if (regex_[0] == '!') {
 			do_not_match = 1;
 			regex_++;
@@ -631,6 +638,7 @@ int cmd_config(int argc, const char **argv, const char *prefix)
 {
 	int nongit = !startup_info->have_repository;
 	char *value;
+	int flags = 0;
 
 	given_config_source.file = xstrdup_or_null(getenv(CONFIG_ENVIRONMENT));
 
@@ -766,6 +774,42 @@ int cmd_config(int argc, const char **argv, const char *prefix)
 		usage_builtin_config();
 	}
 
+	/* check usage of --fixed-value */
+	if (fixed_value) {
+		int allowed_usage = 0;
+
+		switch (actions) {
+		/* git config --get <name> <value-pattern> */
+		case ACTION_GET:
+		/* git config --get-all <name> <value-pattern> */
+		case ACTION_GET_ALL:
+		/* git config --get-regexp <name-pattern> <value-pattern> */
+		case ACTION_GET_REGEXP:
+		/* git config --unset <name> <value-pattern> */
+		case ACTION_UNSET:
+		/* git config --unset-all <name> <value-pattern> */
+		case ACTION_UNSET_ALL:
+			allowed_usage = argc > 1 && !!argv[1];
+			break;
+
+		/* git config <name> <value> <value-pattern> */
+		case ACTION_SET_ALL:
+		/* git config --replace-all <name> <value> <value-pattern> */
+		case ACTION_REPLACE_ALL:
+			allowed_usage = argc > 2 && !!argv[2];
+			break;
+
+		/* other options don't allow --fixed-value */
+		}
+
+		if (!allowed_usage) {
+			error(_("--fixed-value only applies with 'value-pattern'"));
+			usage_builtin_config();
+		}
+
+		flags |= CONFIG_FLAGS_FIXED_VALUE;
+	}
+
 	if (actions & PAGING_ACTIONS)
 		setup_auto_pager("config", 1);
 
@@ -827,7 +871,8 @@ int cmd_config(int argc, const char **argv, const char *prefix)
 		value = normalize_value(argv[0], argv[1]);
 		UNLEAK(value);
 		return git_config_set_multivar_in_file_gently(given_config_source.file,
-							      argv[0], value, argv[2], 0);
+							      argv[0], value, argv[2],
+							      flags);
 	}
 	else if (actions == ACTION_ADD) {
 		check_write();
@@ -836,7 +881,8 @@ int cmd_config(int argc, const char **argv, const char *prefix)
 		UNLEAK(value);
 		return git_config_set_multivar_in_file_gently(given_config_source.file,
 							      argv[0], value,
-							      CONFIG_REGEX_NONE, 0);
+							      CONFIG_REGEX_NONE,
+							      flags);
 	}
 	else if (actions == ACTION_REPLACE_ALL) {
 		check_write();
@@ -844,23 +890,24 @@ int cmd_config(int argc, const char **argv, const char *prefix)
 		value = normalize_value(argv[0], argv[1]);
 		UNLEAK(value);
 		return git_config_set_multivar_in_file_gently(given_config_source.file,
-							      argv[0], value, argv[2], 1);
+							      argv[0], value, argv[2],
+							      flags | CONFIG_FLAGS_MULTI_REPLACE);
 	}
 	else if (actions == ACTION_GET) {
 		check_argc(argc, 1, 2);
-		return get_value(argv[0], argv[1]);
+		return get_value(argv[0], argv[1], flags);
 	}
 	else if (actions == ACTION_GET_ALL) {
 		do_all = 1;
 		check_argc(argc, 1, 2);
-		return get_value(argv[0], argv[1]);
+		return get_value(argv[0], argv[1], flags);
 	}
 	else if (actions == ACTION_GET_REGEXP) {
 		show_keys = 1;
 		use_key_regexp = 1;
 		do_all = 1;
 		check_argc(argc, 1, 2);
-		return get_value(argv[0], argv[1]);
+		return get_value(argv[0], argv[1], flags);
 	}
 	else if (actions == ACTION_GET_URLMATCH) {
 		check_argc(argc, 2, 2);
@@ -871,7 +918,8 @@ int cmd_config(int argc, const char **argv, const char *prefix)
 		check_argc(argc, 1, 2);
 		if (argc == 2)
 			return git_config_set_multivar_in_file_gently(given_config_source.file,
-								      argv[0], NULL, argv[1], 0);
+								      argv[0], NULL, argv[1],
+								      flags);
 		else
 			return git_config_set_in_file_gently(given_config_source.file,
 							     argv[0], NULL);
@@ -880,7 +928,8 @@ int cmd_config(int argc, const char **argv, const char *prefix)
 		check_write();
 		check_argc(argc, 1, 2);
 		return git_config_set_multivar_in_file_gently(given_config_source.file,
-							      argv[0], NULL, argv[1], 1);
+							      argv[0], NULL, argv[1],
+							      flags | CONFIG_FLAGS_MULTI_REPLACE);
 	}
 	else if (actions == ACTION_RENAME_SECTION) {
 		int ret;
diff --git a/builtin/remote.c b/builtin/remote.c
index c1b211b272..d11a5589e4 100644
--- a/builtin/remote.c
+++ b/builtin/remote.c
@@ -712,7 +712,7 @@ static int mv(int argc, const char **argv)
 
 	strbuf_reset(&buf);
 	strbuf_addf(&buf, "remote.%s.fetch", rename.new_name);
-	git_config_set_multivar(buf.buf, NULL, NULL, 1);
+	git_config_set_multivar(buf.buf, NULL, NULL, CONFIG_FLAGS_MULTI_REPLACE);
 	strbuf_addf(&old_remote_context, ":refs/remotes/%s/", rename.old_name);
 	for (i = 0; i < oldremote->fetch.raw_nr; i++) {
 		char *ptr;
@@ -1491,7 +1491,8 @@ static int update(int argc, const char **argv)
 
 static int remove_all_fetch_refspecs(const char *key)
 {
-	return git_config_set_multivar_gently(key, NULL, NULL, 1);
+	return git_config_set_multivar_gently(key, NULL, NULL,
+					      CONFIG_FLAGS_MULTI_REPLACE);
 }
 
 static void add_branches(struct remote *remote, const char **branches,
@@ -1686,7 +1687,8 @@ static int set_url(int argc, const char **argv)
 	if (!delete_mode)
 		git_config_set_multivar(name_buf.buf, newurl, oldurl, 0);
 	else
-		git_config_set_multivar(name_buf.buf, NULL, oldurl, 1);
+		git_config_set_multivar(name_buf.buf, NULL, oldurl,
+					CONFIG_FLAGS_MULTI_REPLACE);
 out:
 	strbuf_release(&name_buf);
 	return 0;