difftool: handle unmerged files in dir-diff mode

diff --git a/builtin/config.c b/builtin/config.c
index b92abb74fe2facc9d79e53ab3c8344e40048674a..1d7c6ef558bf7adcfb94ea454966667f987f7701 100644 (file)
--- a/builtin/config.c
+++ b/builtin/config.c
@@ -3,6 +3,7 @@
 #include "color.h"
 #include "parse-options.h"
 #include "urlmatch.h"
+#include "quote.h"
 
 static const char *const builtin_config_usage[] = {
        N_("git config [<options>]"),
@@ -27,6 +28,7 @@ static int actions, types;
 static const char *get_color_slot, *get_colorbool_slot;
 static int end_null;
 static int respect_includes = -1;
+static int show_origin;
 
 #define ACTION_GET (1<<0)
 #define ACTION_GET_ALL (1<<1)
@@ -81,6 +83,7 @@ static struct option builtin_config_options[] = {
        OPT_BOOL('z', "null", &end_null, N_("terminate values with NUL byte")),
        OPT_BOOL(0, "name-only", &omit_values, N_("show variable names only")),
        OPT_BOOL(0, "includes", &respect_includes, N_("respect include directives on lookup")),
+       OPT_BOOL(0, "show-origin", &show_origin, N_("show origin of config (file, standard input, blob, command line)")),
        OPT_END(),
 };
 
@@ -91,8 +94,28 @@ static void check_argc(int argc, int min, int max) {
        usage_with_options(builtin_config_usage, builtin_config_options);
 }
 
+static void show_config_origin(struct strbuf *buf)
+{
+       const char term = end_null ? '\0' : '\t';
+
+       strbuf_addstr(buf, current_config_origin_type());
+       strbuf_addch(buf, ':');
+       if (end_null)
+               strbuf_addstr(buf, current_config_name());
+       else
+               quote_c_style(current_config_name(), buf, NULL, 0);
+       strbuf_addch(buf, term);
+}
+
 static int show_all_config(const char *key_, const char *value_, void *cb)
 {
+       if (show_origin) {
+               struct strbuf buf = STRBUF_INIT;
+               show_config_origin(&buf);
+               /* Use fwrite as "buf" can contain \0's if "end_null" is set. */
+               fwrite(buf.buf, 1, buf.len, stdout);
+               strbuf_release(&buf);
+       }
        if (!omit_values && value_)
                printf("%s%c%s%c", key_, delim, value_, term);
        else
@@ -108,6 +131,8 @@ struct strbuf_list {
 
 static int format_config(struct strbuf *buf, const char *key_, const char *value_)
 {
+       if (show_origin)
+               show_config_origin(buf);
        if (show_keys)
                strbuf_addstr(buf, key_);
        if (!omit_values) {
@@ -352,6 +377,9 @@ static int get_colorbool(const char *var, int print)
 
 static void check_write(void)
 {
+       if (!given_config_source.file && !startup_info->have_repository)
+               die("not in a git directory");
+
        if (given_config_source.use_stdin)
                die("writing to stdin is not supported");
 
@@ -541,6 +569,14 @@ int cmd_config(int argc, const char **argv, const char *prefix)
                error("--name-only is only applicable to --list or --get-regexp");
                usage_with_options(builtin_config_usage, builtin_config_options);
        }
+
+       if (show_origin && !(actions &
+               (ACTION_GET|ACTION_GET_ALL|ACTION_GET_REGEXP|ACTION_LIST))) {
+               error("--show-origin is only applicable to --get, --get-all, "
+                         "--get-regexp, and --list.");
+               usage_with_options(builtin_config_usage, builtin_config_options);
+       }
+
        if (actions == ACTION_LIST) {
                check_argc(argc, 0, 0);
                if (git_config_with_options(show_all_config, NULL,
@@ -585,7 +621,7 @@ int cmd_config(int argc, const char **argv, const char *prefix)
                check_write();
                check_argc(argc, 2, 2);
                value = normalize_value(argv[0], argv[1]);
-               ret = git_config_set_in_file(given_config_source.file, argv[0], value);
+               ret = git_config_set_in_file_gently(given_config_source.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]);
@@ -595,23 +631,23 @@ int cmd_config(int argc, const char **argv, const char *prefix)
                check_write();
                check_argc(argc, 2, 3);
                value = normalize_value(argv[0], argv[1]);
-               return git_config_set_multivar_in_file(given_config_source.file,
-                                                      argv[0], value, argv[2], 0);
+               return git_config_set_multivar_in_file_gently(given_config_source.file,
+                                                             argv[0], value, argv[2], 0);
        }
        else if (actions == ACTION_ADD) {
                check_write();
                check_argc(argc, 2, 2);
                value = normalize_value(argv[0], argv[1]);
-               return git_config_set_multivar_in_file(given_config_source.file,
-                                                      argv[0], value,
-                                                      CONFIG_REGEX_NONE, 0);
+               return git_config_set_multivar_in_file_gently(given_config_source.file,
+                                                             argv[0], value,
+                                                             CONFIG_REGEX_NONE, 0);
        }
        else if (actions == ACTION_REPLACE_ALL) {
                check_write();
                check_argc(argc, 2, 3);
                value = normalize_value(argv[0], argv[1]);
-               return git_config_set_multivar_in_file(given_config_source.file,
-                                                      argv[0], value, argv[2], 1);
+               return git_config_set_multivar_in_file_gently(given_config_source.file,
+                                                             argv[0], value, argv[2], 1);
        }
        else if (actions == ACTION_GET) {
                check_argc(argc, 1, 2);
@@ -637,17 +673,17 @@ int cmd_config(int argc, const char **argv, const char *prefix)
                check_write();
                check_argc(argc, 1, 2);
                if (argc == 2)
-                       return git_config_set_multivar_in_file(given_config_source.file,
-                                                              argv[0], NULL, argv[1], 0);
+                       return git_config_set_multivar_in_file_gently(given_config_source.file,
+                                                                     argv[0], NULL, argv[1], 0);
                else
-                       return git_config_set_in_file(given_config_source.file,
-                                                     argv[0], NULL);
+                       return git_config_set_in_file_gently(given_config_source.file,
+                                                            argv[0], NULL);
        }
        else if (actions == ACTION_UNSET_ALL) {
                check_write();
                check_argc(argc, 1, 2);
-               return git_config_set_multivar_in_file(given_config_source.file,
-                                                      argv[0], NULL, argv[1], 1);
+               return git_config_set_multivar_in_file_gently(given_config_source.file,
+                                                             argv[0], NULL, argv[1], 1);
        }
        else if (actions == ACTION_RENAME_SECTION) {
                int ret;