[PATCH] Add --symbolic flag to git-rev-parse.

[Junio C Hamano]

This is most useful with --all, --revs-only, --no-flags and --verify.

Signed-off-by: Junio C Hamano <[EMAIL PROTECTED]>
---

    With this, "git-rev-parse --symbolic master pu" would output
    "master pu".  Why would this be useful?  The next one uses it.

 rev-parse.c |   30 ++++++++++++++++++------------
 1 files changed, 18 insertions(+), 12 deletions(-)

c7e32319f6c9338f186b62fe05919f0bc5ae7405
diff --git a/rev-parse.c b/rev-parse.c
--- a/rev-parse.c
+++ b/rev-parse.c
@@ -16,6 +16,7 @@ static int output_revs = 0;
 static int flags_only = 0;
 static int no_flags = 0;
 static int output_sq = 0;
+static int symbolic = 0;
 
 #define NORMAL 0
 #define REVERSED 1
@@ -69,17 +70,18 @@ static void show(const char *arg)
                puts(arg);
 }
 
-static void show_rev(int type, const unsigned char *sha1)
+static void show_rev(int type, const unsigned char *sha1, const char *name)
 {
        if (no_revs)
                return;
        output_revs++;
 
-       /* Hexadecimal string plus possibly a carret;
-        * this does not have to be quoted even under output_sq.
-        */
-       printf("%s%s%c", type == show_type ? "" : "^", sha1_to_hex(sha1),
-              output_sq ? ' ' : '\n');
+       if (type != show_type)
+               putchar('^');
+       if (symbolic && name)
+               show(name);
+       else
+               show(sha1_to_hex(sha1));
 }
 
 static void show_rev_arg(char *rev)
@@ -117,7 +119,7 @@ static void show_default(void)
 
                def = NULL;
                if (!get_sha1(s, sha1)) {
-                       show_rev(NORMAL, sha1);
+                       show_rev(NORMAL, sha1, s);
                        return;
                }
                show_arg(s);
@@ -126,7 +128,7 @@ static void show_default(void)
 
 static int show_reference(const char *refname, const unsigned char *sha1)
 {
-       show_rev(NORMAL, sha1);
+       show_rev(NORMAL, sha1, refname);
        return 0;
 }
 
@@ -186,6 +188,10 @@ int main(int argc, char **argv)
                                show_type ^= REVERSED;
                                continue;
                        }
+                       if (!strcmp(arg, "--symbolic")) {
+                               symbolic = 1;
+                               continue;
+                       }
                        if (!strcmp(arg, "--all")) {
                                for_each_ref(show_reference);
                                continue;
@@ -209,8 +215,8 @@ int main(int argc, char **argv)
                                        if (no_revs)
                                                continue;
                                        def = NULL;
-                                       show_rev(NORMAL, end);
-                                       show_rev(REVERSED, sha1);
+                                       show_rev(NORMAL, end, n);
+                                       show_rev(REVERSED, sha1, arg);
                                        continue;
                                }
                        }
@@ -220,14 +226,14 @@ int main(int argc, char **argv)
                        if (no_revs)
                                continue;
                        def = NULL;
-                       show_rev(NORMAL, sha1);
+                       show_rev(NORMAL, sha1, arg);
                        continue;
                }
                if (*arg == '^' && !get_sha1(arg+1, sha1)) {
                        if (no_revs)
                                continue;
                        def = NULL;
-                       show_rev(REVERSED, sha1);
+                       show_rev(REVERSED, sha1, arg+1);
                        continue;
                }
                show_default();


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