fix typo in tutorial

diff --git a/remote.c b/remote.c
index 08af7f9de124f2e06dc8edd030212ecde9c22920..2d9af4023eba6f8b2fe528ccbf03569fcaa265ee 100644 (file)
--- a/remote.c
+++ b/remote.c
@@ -315,7 +315,7 @@ static int handle_config(const char *key, const char *value)
        }
        if (!prefixcmp(key, "url.")) {
                struct rewrite *rewrite;
-               name = key + 5;
+               name = key + 4;
                subkey = strrchr(name, '.');
                if (!subkey)
                        return 0;
@@ -409,7 +409,7 @@ static void read_config(void)
        alias_all_urls();
 }
 
-static struct refspec *parse_refspec_internal(int nr_refspec, const char **refspec, int fetch)
+static struct refspec *parse_refspec_internal(int nr_refspec, const char **refspec, int fetch, int verify)
 {
        int i;
        int st;
@@ -519,17 +519,32 @@ static struct refspec *parse_refspec_internal(int nr_refspec, const char **refsp
        return rs;
 
  invalid:
+       if (verify) {
+               free(rs);
+               return NULL;
+       }
        die("Invalid refspec '%s'", refspec[i]);
 }
 
+int valid_fetch_refspec(const char *fetch_refspec_str)
+{
+       const char *fetch_refspec[] = { fetch_refspec_str };
+       struct refspec *refspec;
+
+       refspec = parse_refspec_internal(1, fetch_refspec, 1, 1);
+       if (refspec)
+               free(refspec);
+       return !!refspec;
+}
+
 struct refspec *parse_fetch_refspec(int nr_refspec, const char **refspec)
 {
-       return parse_refspec_internal(nr_refspec, refspec, 1);
+       return parse_refspec_internal(nr_refspec, refspec, 1, 0);
 }
 
 struct refspec *parse_push_refspec(int nr_refspec, const char **refspec)
 {
-       return parse_refspec_internal(nr_refspec, refspec, 0);
+       return parse_refspec_internal(nr_refspec, refspec, 0, 0);
 }
 
 static int valid_remote_nick(const char *name)
@@ -797,6 +812,26 @@ static struct ref *make_linked_ref(const char *name, struct ref ***tail)
        return ret;
 }
 
+static char *guess_ref(const char *name, struct ref *peer)
+{
+       struct strbuf buf = STRBUF_INIT;
+       unsigned char sha1[20];
+
+       const char *r = resolve_ref(peer->name, sha1, 1, NULL);
+       if (!r)
+               return NULL;
+
+       if (!prefixcmp(r, "refs/heads/"))
+               strbuf_addstr(&buf, "refs/heads/");
+       else if (!prefixcmp(r, "refs/tags/"))
+               strbuf_addstr(&buf, "refs/tags/");
+       else
+               return NULL;
+
+       strbuf_addstr(&buf, name);
+       return strbuf_detach(&buf, NULL);
+}
+
 static int match_explicit(struct ref *src, struct ref *dst,
                          struct ref ***dst_tail,
                          struct refspec *rs,
@@ -805,6 +840,7 @@ static int match_explicit(struct ref *src, struct ref *dst,
        struct ref *matched_src, *matched_dst;
 
        const char *dst_value = rs->dst;
+       char *dst_guess;
 
        if (rs->pattern)
                return errs;
@@ -851,10 +887,15 @@ static int match_explicit(struct ref *src, struct ref *dst,
        case 0:
                if (!memcmp(dst_value, "refs/", 5))
                        matched_dst = make_linked_ref(dst_value, dst_tail);
+               else if((dst_guess = guess_ref(dst_value, matched_src)))
+                       matched_dst = make_linked_ref(dst_guess, dst_tail);
                else
-                       error("dst refspec %s does not match any "
-                             "existing ref on the remote and does "
-                             "not start with refs/.", dst_value);
+                       error("unable to push to unqualified destination: %s\n"
+                             "The destination refspec neither matches an "
+                             "existing ref on the remote nor\n"
+                             "begins with refs/, and we are unable to "
+                             "guess a prefix based on the source ref.",
+                             dst_value);
                break;
        default:
                matched_dst = NULL;