mergetool: run prompt only if guessed tool

diff --git a/config.c b/config.c
index 7f5b800ff33ac6a16b48638dff0ff83c600daa79..a30cb5c07db18a5ac16c1c98b6600c9fe6dc1b73 100644 (file)
--- a/config.c
+++ b/config.c
@@ -21,6 +21,7 @@ struct config_source {
                } buf;
        } u;
        const char *name;
+       const char *path;
        int die_on_error;
        int linenr;
        int eof;
@@ -101,12 +102,12 @@ static int handle_path_include(const char *path, struct config_include_data *inc
        if (!is_absolute_path(path)) {
                char *slash;
 
-               if (!cf || !cf->name)
+               if (!cf || !cf->path)
                        return error("relative config includes must come from files");
 
-               slash = find_last_dir_sep(cf->name);
+               slash = find_last_dir_sep(cf->path);
                if (slash)
-                       strbuf_add(&buf, cf->name, slash - cf->name + 1);
+                       strbuf_add(&buf, cf->path, slash - cf->path + 1);
                strbuf_addstr(&buf, path);
                path = buf.buf;
        }
@@ -556,6 +557,7 @@ int git_parse_ulong(const char *value, unsigned long *ret)
        return 1;
 }
 
+NORETURN
 static void die_bad_number(const char *name, const char *value)
 {
        const char *reason = errno == ERANGE ?
@@ -1021,24 +1023,35 @@ static int do_config_from(struct config_source *top, config_fn_t fn, void *data)
        return ret;
 }
 
-int git_config_from_file(config_fn_t fn, const char *filename, void *data)
+static int do_config_from_file(config_fn_t fn,
+               const char *name, const char *path, FILE *f, void *data)
 {
-       int ret;
-       FILE *f = fopen(filename, "r");
+       struct config_source top;
 
-       ret = -1;
-       if (f) {
-               struct config_source top;
+       top.u.file = f;
+       top.name = name;
+       top.path = path;
+       top.die_on_error = 1;
+       top.do_fgetc = config_file_fgetc;
+       top.do_ungetc = config_file_ungetc;
+       top.do_ftell = config_file_ftell;
 
-               top.u.file = f;
-               top.name = filename;
-               top.die_on_error = 1;
-               top.do_fgetc = config_file_fgetc;
-               top.do_ungetc = config_file_ungetc;
-               top.do_ftell = config_file_ftell;
+       return do_config_from(&top, fn, data);
+}
 
-               ret = do_config_from(&top, fn, data);
+static int git_config_from_stdin(config_fn_t fn, void *data)
+{
+       return do_config_from_file(fn, "<stdin>", NULL, stdin, data);
+}
+
+int git_config_from_file(config_fn_t fn, const char *filename, void *data)
+{
+       int ret = -1;
+       FILE *f;
 
+       f = fopen(filename, "r");
+       if (f) {
+               ret = do_config_from_file(fn, filename, filename, f, data);
                fclose(f);
        }
        return ret;
@@ -1053,6 +1066,7 @@ int git_config_from_buf(config_fn_t fn, const char *name, const char *buf,
        top.u.buf.len = len;
        top.u.buf.pos = 0;
        top.name = name;
+       top.path = NULL;
        top.die_on_error = 0;
        top.do_fgetc = config_buf_fgetc;
        top.do_ungetc = config_buf_ungetc;
@@ -1161,8 +1175,7 @@ int git_config_early(config_fn_t fn, void *data, const char *repo_config)
 }
 
 int git_config_with_options(config_fn_t fn, void *data,
-                           const char *filename,
-                           const char *blob_ref,
+                           struct git_config_source *config_source,
                            int respect_includes)
 {
        char *repo_config = NULL;
@@ -1180,10 +1193,12 @@ int git_config_with_options(config_fn_t fn, void *data,
         * If we have a specific filename, use it. Otherwise, follow the
         * regular lookup sequence.
         */
-       if (filename)
-               return git_config_from_file(fn, filename, data);
-       else if (blob_ref)
-               return git_config_from_blob_ref(fn, blob_ref, data);
+       if (config_source && config_source->use_stdin)
+               return git_config_from_stdin(fn, data);
+       else if (config_source && config_source->file)
+               return git_config_from_file(fn, config_source->file, data);
+       else if (config_source && config_source->blob)
+               return git_config_from_blob_ref(fn, config_source->blob, data);
 
        repo_config = git_pathdup("config");
        ret = git_config_early(fn, data, repo_config);
@@ -1194,7 +1209,7 @@ int git_config_with_options(config_fn_t fn, void *data,
 
 int git_config(config_fn_t fn, void *data)
 {
-       return git_config_with_options(fn, data, NULL, NULL, 1);
+       return git_config_with_options(fn, data, NULL, 1);
 }
 
 /*