regex: use regexec_buf()

diff --git a/builtin/rev-parse.c b/builtin/rev-parse.c
index 02d747dcb1a318af98ec06a7ab2f4e489e7c2625..c961b74c5aaae41153b89f4e877437ba7f0d70c7 100644 (file)
--- a/builtin/rev-parse.c
+++ b/builtin/rev-parse.c
@@ -281,11 +281,8 @@ static int try_difference(const char *arg)
                        b = lookup_commit_reference(end);
                        exclude = get_merge_bases(a, b);
                        while (exclude) {
-                               struct commit_list *n = exclude->next;
-                               show_rev(REVERSED,
-                                        exclude->item->object.sha1,NULL);
-                               free(exclude);
-                               exclude = n;
+                               struct commit *commit = pop_commit(&exclude);
+                               show_rev(REVERSED, commit->object.oid.hash, NULL);
                        }
                }
                *dotdot = '.';
@@ -322,7 +319,7 @@ static int try_parent_shorthands(const char *arg)
        commit = lookup_commit_reference(sha1);
        for (parents = commit->parents; parents; parents = parents->next)
                show_rev(parents_only ? NORMAL : REVERSED,
-                               parents->item->object.sha1, arg);
+                               parents->item->object.oid.hash, arg);
 
        *dotdot = '^';
        return 1;
@@ -386,7 +383,7 @@ static int cmd_parseopt(int argc, const char **argv, const char *prefix)
 
        /* get the usage up to the first line with a -- on it */
        for (;;) {
-               if (strbuf_getline(&sb, stdin, '\n') == EOF)
+               if (strbuf_getline(&sb, stdin) == EOF)
                        die("premature end of input");
                ALLOC_GROW(usage, unb + 1, usz);
                if (!strcmp("--", sb.buf)) {
@@ -399,7 +396,7 @@ static int cmd_parseopt(int argc, const char **argv, const char *prefix)
        }
 
        /* parse: (<short>|<short>,<long>|<long>)[*=?!]*<arghint>? SP+ <help> */
-       while (strbuf_getline(&sb, stdin, '\n') != EOF) {
+       while (strbuf_getline(&sb, stdin) != EOF) {
                const char *s;
                const char *help;
                struct option *o;
@@ -508,6 +505,7 @@ N_("git rev-parse --parseopt [<options>] -- [<args>...]\n"
 int cmd_rev_parse(int argc, const char **argv, const char *prefix)
 {
        int i, as_is = 0, verify = 0, quiet = 0, revs_count = 0, type = 0;
+       int did_repo_setup = 0;
        int has_dashdash = 0;
        int output_prefix = 0;
        unsigned char sha1[20];
@@ -531,11 +529,40 @@ int cmd_rev_parse(int argc, const char **argv, const char *prefix)
                }
        }
 
-       prefix = setup_git_directory();
-       git_config(git_default_config, NULL);
+       /* No options; just report on whether we're in a git repo or not. */
+       if (argc == 1) {
+               setup_git_directory();
+               git_config(git_default_config, NULL);
+               return 0;
+       }
+
        for (i = 1; i < argc; i++) {
                const char *arg = argv[i];
 
+               if (!strcmp(arg, "--local-env-vars")) {
+                       int i;
+                       for (i = 0; local_repo_env[i]; i++)
+                               printf("%s\n", local_repo_env[i]);
+                       continue;
+               }
+               if (!strcmp(arg, "--resolve-git-dir")) {
+                       const char *gitdir = argv[++i];
+                       if (!gitdir)
+                               die("--resolve-git-dir requires an argument");
+                       gitdir = resolve_gitdir(gitdir);
+                       if (!gitdir)
+                               die("not a gitdir '%s'", argv[i]);
+                       puts(gitdir);
+                       continue;
+               }
+
+               /* The rest of the options require a git repository. */
+               if (!did_repo_setup) {
+                       prefix = setup_git_directory();
+                       git_config(git_default_config, NULL);
+                       did_repo_setup = 1;
+               }
+
                if (!strcmp(arg, "--git-path")) {
                        if (!argv[i + 1])
                                die("--git-path requires an argument");
@@ -709,12 +736,6 @@ int cmd_rev_parse(int argc, const char **argv, const char *prefix)
                                add_ref_exclusion(&ref_excludes, arg + 10);
                                continue;
                        }
-                       if (!strcmp(arg, "--local-env-vars")) {
-                               int i;
-                               for (i = 0; local_repo_env[i]; i++)
-                                       printf("%s\n", local_repo_env[i]);
-                               continue;
-                       }
                        if (!strcmp(arg, "--show-toplevel")) {
                                const char *work_tree = get_git_work_tree();
                                if (work_tree)
@@ -766,17 +787,8 @@ int cmd_rev_parse(int argc, const char **argv, const char *prefix)
                                continue;
                        }
                        if (!strcmp(arg, "--git-common-dir")) {
-                               puts(get_git_common_dir());
-                               continue;
-                       }
-                       if (!strcmp(arg, "--resolve-git-dir")) {
-                               const char *gitdir = argv[++i];
-                               if (!gitdir)
-                                       die("--resolve-git-dir requires an argument");
-                               gitdir = resolve_gitdir(gitdir);
-                               if (!gitdir)
-                                       die("not a gitdir '%s'", argv[i]);
-                               puts(gitdir);
+                               const char *pfx = prefix ? prefix : "";
+                               puts(prefix_filename(pfx, strlen(pfx), get_git_common_dir()));
                                continue;
                        }
                        if (!strcmp(arg, "--is-inside-git-dir")) {