am: POSIX portability fix

diff --git a/builtin-rev-parse.c b/builtin-rev-parse.c
index 20d1789e0161ed3d2d18cec94b1915f518a5d662..90dbb9d7c1a28fd463ba827cb8da2eab42e489df 100644 (file)
--- a/builtin-rev-parse.c
+++ b/builtin-rev-parse.c
@@ -21,6 +21,9 @@ static const char *def;
 #define NORMAL 0
 #define REVERSED 1
 static int show_type = NORMAL;
+
+#define SHOW_SYMBOLIC_ASIS 1
+#define SHOW_SYMBOLIC_FULL 2
 static int symbolic;
 static int abbrev;
 static int output_sq;
@@ -103,8 +106,32 @@ static void show_rev(int type, const unsigned char *sha1, const char *name)
 
        if (type != show_type)
                putchar('^');
-       if (symbolic && name)
-               show(name);
+       if (symbolic && name) {
+               if (symbolic == SHOW_SYMBOLIC_FULL) {
+                       unsigned char discard[20];
+                       char *full;
+
+                       switch (dwim_ref(name, strlen(name), discard, &full)) {
+                       case 0:
+                               /*
+                                * Not found -- not a ref.  We could
+                                * emit "name" here, but symbolic-full
+                                * users are interested in finding the
+                                * refs spelled in full, and they would
+                                * need to filter non-refs if we did so.
+                                */
+                               break;
+                       case 1: /* happy */
+                               show(full);
+                               break;
+                       default: /* ambiguous */
+                               error("refname '%s' is ambiguous", name);
+                               break;
+                       }
+               } else {
+                       show(name);
+               }
+       }
        else if (abbrev)
                show(find_unique_abbrev(sha1, abbrev));
        else
@@ -288,7 +315,7 @@ static int cmd_parseopt(int argc, const char **argv, const char *prefix)
                s = strchr(sb.buf, ' ');
                if (!s || *sb.buf == ' ') {
                        o->type = OPTION_GROUP;
-                       o->help = xstrdup(skipspaces(s));
+                       o->help = xstrdup(skipspaces(sb.buf));
                        continue;
                }
 
@@ -421,7 +448,11 @@ int cmd_rev_parse(int argc, const char **argv, const char *prefix)
                                continue;
                        }
                        if (!strcmp(arg, "--symbolic")) {
-                               symbolic = 1;
+                               symbolic = SHOW_SYMBOLIC_ASIS;
+                               continue;
+                       }
+                       if (!strcmp(arg, "--symbolic-full-name")) {
+                               symbolic = SHOW_SYMBOLIC_FULL;
                                continue;
                        }
                        if (!strcmp(arg, "--all")) {