config: stop using config_exclusive_filename

The git-config command sometimes operates on the default set
of config files (either reading from all, or writing to repo
config), and sometimes operates on a specific file. In the
latter case, we set the magic global config_exclusive_filename,
and the code in config.c does the right thing.

Instead, let's have git-config use the "advanced" variants
of config.c's functions which let it specify an individual
filename (or NULL for the default). This makes the code a
lot more obvious, and fixes two small bugs:

  1. A relative path specified by GIT_CONFIG=foo will look
     in the wrong directory if we have to chdir as part of
     repository setup. We already handle this properly for
     "git config -f foo", but the GIT_CONFIG lookup used
     config_exclusive_filename directly. By dropping to a
     single magic variable, the GIT_CONFIG case now just
     works.

  2. Calling "git config -f foo --edit" would not respect
     core.editor. This is because just before editing, we
     called git_config, which would respect the
     config_exclusive_filename setting, even though this
     particular git_config call was not about looking in the
     user's specified file, but rather about loading actual
     git config, just as any other git program would.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/builtin/config.c b/builtin/config.c
index 55854bef684752f1ca92d7081d536fbccaed6b1e..ccbb13add2b80e39ef806d352850d85e1f73f819 100644 (file)
--- a/builtin/config.c
+++ b/builtin/config.c
@@ -162,7 +162,7 @@ static int get_value(const char *key_, const char *regex_)
        char *global = NULL, *repo_config = NULL;
        const char *system_wide = NULL, *local;
 
-       local = config_exclusive_filename;
+       local = given_config_file;
        if (!local) {
                const char *home = getenv("HOME");
                local = repo_config = git_pathdup("config");
@@ -301,7 +301,8 @@ static void get_color(const char *def_color)
 {
        get_color_found = 0;
        parsed_color[0] = '\0';
-       git_config(git_get_color_config, NULL);
+       git_config_with_options(git_get_color_config, NULL,
+                               given_config_file);
 
        if (!get_color_found && def_color)
                color_parse(def_color, "command line", parsed_color);
@@ -328,7 +329,8 @@ static int get_colorbool(int print)
 {
        get_colorbool_found = -1;
        get_diff_color_found = -1;
-       git_config(git_get_colorbool_config, NULL);
+       git_config_with_options(git_get_colorbool_config, NULL,
+                               given_config_file);
 
        if (get_colorbool_found < 0) {
                if (!strcmp(get_colorbool_slot, "color.diff"))
@@ -351,7 +353,7 @@ int cmd_config(int argc, const char **argv, const char *prefix)
        int nongit = !startup_info->have_repository;
        char *value;
 
-       config_exclusive_filename = getenv(CONFIG_ENVIRONMENT);
+       given_config_file = getenv(CONFIG_ENVIRONMENT);
 
        argc = parse_options(argc, argv, prefix, builtin_config_options,
                             builtin_config_usage,
@@ -366,23 +368,23 @@ int cmd_config(int argc, const char **argv, const char *prefix)
                char *home = getenv("HOME");
                if (home) {
                        char *user_config = xstrdup(mkpath("%s/.gitconfig", home));
-                       config_exclusive_filename = user_config;
+                       given_config_file = user_config;
                } else {
                        die("$HOME not set");
                }
        }
        else if (use_system_config)
-               config_exclusive_filename = git_etc_gitconfig();
+               given_config_file = git_etc_gitconfig();
        else if (use_local_config)
-               config_exclusive_filename = git_pathdup("config");
+               given_config_file = git_pathdup("config");
        else if (given_config_file) {
                if (!is_absolute_path(given_config_file) && prefix)
-                       config_exclusive_filename =
+                       given_config_file =
                                xstrdup(prefix_filename(prefix,
                                                        strlen(prefix),
                                                        given_config_file));
                else
-                       config_exclusive_filename = given_config_file;
+                       given_config_file = given_config_file;
        }
 
        if (end_null) {
@@ -421,28 +423,29 @@ int cmd_config(int argc, const char **argv, const char *prefix)
 
        if (actions == ACTION_LIST) {
                check_argc(argc, 0, 0);
-               if (git_config(show_all_config, NULL) < 0) {
-                       if (config_exclusive_filename)
+               if (git_config_with_options(show_all_config, NULL,
+                                           given_config_file) < 0) {
+                       if (given_config_file)
                                die_errno("unable to read config file '%s'",
-                                         config_exclusive_filename);
+                                         given_config_file);
                        else
                                die("error processing config file(s)");
                }
        }
        else if (actions == ACTION_EDIT) {
                check_argc(argc, 0, 0);
-               if (!config_exclusive_filename && nongit)
+               if (!given_config_file && nongit)
                        die("not in a git directory");
                git_config(git_default_config, NULL);
-               launch_editor(config_exclusive_filename ?
-                             config_exclusive_filename : git_path("config"),
+               launch_editor(given_config_file ?
+                             given_config_file : git_path("config"),
                              NULL, NULL);
        }
        else if (actions == ACTION_SET) {
                int ret;
                check_argc(argc, 2, 2);
                value = normalize_value(argv[0], argv[1]);
-               ret = git_config_set(argv[0], value);
+               ret = git_config_set_in_file(given_config_file, argv[0], value);
                if (ret == CONFIG_NOTHING_SET)
                        error("cannot overwrite multiple values with a single value\n"
                        "       Use a regexp, --add or --replace-all to change %s.", argv[0]);
@@ -451,17 +454,20 @@ int cmd_config(int argc, const char **argv, const char *prefix)
        else if (actions == ACTION_SET_ALL) {
                check_argc(argc, 2, 3);
                value = normalize_value(argv[0], argv[1]);
-               return git_config_set_multivar(argv[0], value, argv[2], 0);
+               return git_config_set_multivar_in_file(given_config_file,
+                                                      argv[0], value, argv[2], 0);
        }
        else if (actions == ACTION_ADD) {
                check_argc(argc, 2, 2);
                value = normalize_value(argv[0], argv[1]);
-               return git_config_set_multivar(argv[0], value, "^$", 0);
+               return git_config_set_multivar_in_file(given_config_file,
+                                                      argv[0], value, "^$", 0);
        }
        else if (actions == ACTION_REPLACE_ALL) {
                check_argc(argc, 2, 3);
                value = normalize_value(argv[0], argv[1]);
-               return git_config_set_multivar(argv[0], value, argv[2], 1);
+               return git_config_set_multivar_in_file(given_config_file,
+                                                      argv[0], value, argv[2], 1);
        }
        else if (actions == ACTION_GET) {
                check_argc(argc, 1, 2);
@@ -482,18 +488,22 @@ int cmd_config(int argc, const char **argv, const char *prefix)
        else if (actions == ACTION_UNSET) {
                check_argc(argc, 1, 2);
                if (argc == 2)
-                       return git_config_set_multivar(argv[0], NULL, argv[1], 0);
+                       return git_config_set_multivar_in_file(given_config_file,
+                                                              argv[0], NULL, argv[1], 0);
                else
-                       return git_config_set(argv[0], NULL);
+                       return git_config_set_in_file(given_config_file,
+                                                     argv[0], NULL);
        }
        else if (actions == ACTION_UNSET_ALL) {
                check_argc(argc, 1, 2);
-               return git_config_set_multivar(argv[0], NULL, argv[1], 1);
+               return git_config_set_multivar_in_file(given_config_file,
+                                                      argv[0], NULL, argv[1], 1);
        }
        else if (actions == ACTION_RENAME_SECTION) {
                int ret;
                check_argc(argc, 2, 2);
-               ret = git_config_rename_section(argv[0], argv[1]);
+               ret = git_config_rename_section_in_file(given_config_file,
+                                                       argv[0], argv[1]);
                if (ret < 0)
                        return ret;
                if (ret == 0)
@@ -502,7 +512,8 @@ int cmd_config(int argc, const char **argv, const char *prefix)
        else if (actions == ACTION_REMOVE_SECTION) {
                int ret;
                check_argc(argc, 1, 1);
-               ret = git_config_rename_section(argv[0], NULL);
+               ret = git_config_rename_section_in_file(given_config_file,
+                                                       argv[0], NULL);
                if (ret < 0)
                        return ret;
                if (ret == 0)

diff --git a/t/t1300-repo-config.sh b/t/t1300-repo-config.sh
index 6de46bbd57a18e4fd7b3aee8df49abfa8fd4a9c1..5f249f681e9324d7d35e3aee4dc9a834beff6c75 100755 (executable)
--- a/t/t1300-repo-config.sh
+++ b/t/t1300-repo-config.sh
@@ -458,6 +458,14 @@ test_expect_success 'refer config from subdirectory' '
 
 '
 
+test_expect_success 'refer config from subdirectory via GIT_CONFIG' '
+       (
+               cd x &&
+               GIT_CONFIG=../other-config git config --get ein.bahn >actual &&
+               test_cmp expect actual
+       )
+'
+
 cat > expect << EOF
 [ein]
        bahn = strasse
@@ -960,4 +968,21 @@ test_expect_success 'git -c complains about empty key and value' '
        test_must_fail git -c "" rev-parse
 '
 
+test_expect_success 'git config --edit works' '
+       git config -f tmp test.value no &&
+       echo test.value=yes >expect &&
+       GIT_EDITOR="echo [test]value=yes >" git config -f tmp --edit &&
+       git config -f tmp --list >actual &&
+       test_cmp expect actual
+'
+
+test_expect_success 'git config --edit respects core.editor' '
+       git config -f tmp test.value no &&
+       echo test.value=yes >expect &&
+       test_config core.editor "echo [test]value=yes >" &&
+       git config -f tmp --edit &&
+       git config -f tmp --list >actual &&
+       test_cmp expect actual
+'
+
 test_done