for-each-ref --format='%(flag)'

This expands to "symref" or "packed" or an empty string, exposing the
internal "flag" the for_each_ref() callback functions are called with.

Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/builtin-for-each-ref.c b/builtin-for-each-ref.c
index b9b03e14d3f6a6cedb6cf6363d55e4d564cc3d28..62be1bbfd6659f9dfac73a17acd1e2d5322dac66 100644 (file)
--- a/builtin-for-each-ref.c
+++ b/builtin-for-each-ref.c
@@ -71,6 +71,7 @@ static struct {
        { "contents" },
        { "upstream" },
        { "symref" },
+       { "flag" },
 };
 
 /*
@@ -558,6 +559,13 @@ static void grab_values(struct atom_value *val, int deref, struct object *obj, v
        }
 }
 
+static inline char *copy_advance(char *dst, const char *src)
+{
+       while (*src)
+               *dst++ = *src++;
+       return dst;
+}
+
 /*
  * Parse the object referred by ref, and grab needed value.
  */
@@ -610,6 +618,20 @@ static void populate_value(struct refinfo *ref)
                                continue;
                        refname = branch->merge[0]->dst;
                }
+               else if (!strcmp(name, "flag")) {
+                       char buf[256], *cp = buf;
+                       if (ref->flag & REF_ISSYMREF)
+                               cp = copy_advance(cp, ",symref");
+                       if (ref->flag & REF_ISPACKED)
+                               cp = copy_advance(cp, ",packed");
+                       if (cp == buf)
+                               v->s = "";
+                       else {
+                               *cp = '\0';
+                               v->s = xstrdup(buf + 1);
+                       }
+                       continue;
+               }
                else
                        continue;