glossary: clarify description of HEAD

diff --git a/revision.c b/revision.c
index 0f38364cf3f81a9088305ca802adf8b7c9260e91..707a703a09d6c7ffc1adfcd89da83d5b97da397f 100644 (file)
--- a/revision.c
+++ b/revision.c
@@ -1096,35 +1096,34 @@ int handle_revision_arg(const char *arg, struct rev_info *revs,
        return 0;
 }
 
-static void read_pathspec_from_stdin(struct rev_info *revs, struct strbuf *sb, const char ***prune_data)
-{
-       const char **prune = *prune_data;
-       int prune_nr;
-       int prune_alloc;
+struct cmdline_pathspec {
+       int alloc;
+       int nr;
+       const char **path;
+};
 
-       /* count existing ones */
-       if (!prune)
-               prune_nr = 0;
-       else
-               for (prune_nr = 0; prune[prune_nr]; prune_nr++)
-                       ;
-       prune_alloc = prune_nr; /* not really, but we do not know */
+static void append_prune_data(struct cmdline_pathspec *prune, const char **av)
+{
+       while (*av) {
+               ALLOC_GROW(prune->path, prune->nr+1, prune->alloc);
+               prune->path[prune->nr++] = *(av++);
+       }
+}
 
+static void read_pathspec_from_stdin(struct rev_info *revs, struct strbuf *sb,
+                                    struct cmdline_pathspec *prune)
+{
        while (strbuf_getwholeline(sb, stdin, '\n') != EOF) {
                int len = sb->len;
                if (len && sb->buf[len - 1] == '\n')
                        sb->buf[--len] = '\0';
-               ALLOC_GROW(prune, prune_nr+1, prune_alloc);
-               prune[prune_nr++] = xstrdup(sb->buf);
+               ALLOC_GROW(prune->path, prune->nr+1, prune->alloc);
+               prune->path[prune->nr++] = xstrdup(sb->buf);
        }
-       if (prune) {
-               ALLOC_GROW(prune, prune_nr+1, prune_alloc);
-               prune[prune_nr] = NULL;
-       }
-       *prune_data = prune;
 }
 
-static void read_revisions_from_stdin(struct rev_info *revs, const char ***prune)
+static void read_revisions_from_stdin(struct rev_info *revs,
+                                     struct cmdline_pathspec *prune)
 {
        struct strbuf sb;
        int seen_dashdash = 0;
@@ -1498,34 +1497,6 @@ static int for_each_good_bisect_ref(const char *submodule, each_ref_fn fn, void
        return for_each_ref_in_submodule(submodule, "refs/bisect/good", fn, cb_data);
 }
 
-static void append_prune_data(const char ***prune_data, const char **av)
-{
-       const char **prune = *prune_data;
-       int prune_nr;
-       int prune_alloc;
-
-       if (!prune) {
-               *prune_data = av;
-               return;
-       }
-
-       /* count existing ones */
-       for (prune_nr = 0; prune[prune_nr]; prune_nr++)
-               ;
-       prune_alloc = prune_nr; /* not really, but we do not know */
-
-       while (*av) {
-               ALLOC_GROW(prune, prune_nr+1, prune_alloc);
-               prune[prune_nr++] = *av;
-               av++;
-       }
-       if (prune) {
-               ALLOC_GROW(prune, prune_nr+1, prune_alloc);
-               prune[prune_nr] = NULL;
-       }
-       *prune_data = prune;
-}
-
 /*
  * Parse revision information, filling in the "rev_info" structure,
  * and removing the used arguments from the argument list.
@@ -1536,11 +1507,12 @@ static void append_prune_data(const char ***prune_data, const char **av)
 int setup_revisions(int argc, const char **argv, struct rev_info *revs, struct setup_revision_opt *opt)
 {
        int i, flags, left, seen_dashdash, read_from_stdin, got_rev_arg = 0;
-       const char **prune_data = NULL;
+       struct cmdline_pathspec prune_data;
        const char *submodule = NULL;
        const char *optarg;
        int argcount;
 
+       memset(&prune_data, 0, sizeof(prune_data));
        if (opt)
                submodule = opt->submodule;
 
@@ -1553,7 +1525,7 @@ int setup_revisions(int argc, const char **argv, struct rev_info *revs, struct s
                argv[i] = NULL;
                argc = i;
                if (argv[i + 1])
-                       prune_data = argv + i + 1;
+                       append_prune_data(&prune_data, argv + i + 1);
                seen_dashdash = 1;
                break;
        }
@@ -1672,8 +1644,12 @@ int setup_revisions(int argc, const char **argv, struct rev_info *revs, struct s
                        got_rev_arg = 1;
        }
 
-       if (prune_data)
-               init_pathspec(&revs->prune_data, get_pathspec(revs->prefix, prune_data));
+       if (prune_data.nr) {
+               ALLOC_GROW(prune_data.path, prune_data.nr+1, prune_data.alloc);
+               prune_data.path[prune_data.nr++] = NULL;
+               init_pathspec(&revs->prune_data,
+                             get_pathspec(revs->prefix, prune_data.path));
+       }
 
        if (revs->def == NULL)
                revs->def = opt ? opt->def : NULL;