1 files changed, 45 insertions, 0 deletions
diff --git a/src/group.c b/src/group.c
index cca95a2..f45877f 100644
--- a/src/group.c
+++ b/src/group.c
@@ -66,6 +66,51 @@ group_get_numset()
   return group_numset;
 }
 
+/* get the group list and store it in buffer delimiting each window
+   with delim. mark_start and mark_end will be filled with the text
+   positions for the start and end of the current window. */
+void
+get_group_list (char *delim, struct sbuf *buffer,
+                int *mark_start, int *mark_end)
+{
+  rp_group *cur;
+
+  if (buffer == NULL) return;
+
+  sbuf_clear (buffer);
+
+  rp_group *last;
+
+  last = group_last_group ();
+
+  /* Generate the string. */
+  list_for_each_entry (cur, &rp_groups, node)
+    {
+      char *fmt;
+      char separator;
+
+      if (cur == rp_current_group)
+        *mark_start = strlen (sbuf_get (buffer));
+
+      if(cur == rp_current_group)
+        separator = '*';
+      else if(cur == last)
+        separator = '+';
+      else
+        separator = '-';
+
+      fmt = xsprintf ("%d%c%s", cur->number, separator, cur->name);
+      sbuf_concat (buffer, fmt);
+      free (fmt);
+
+      if (cur->node.next != &rp_groups)
+            sbuf_concat (buffer, delim);
+
+      if (cur == rp_current_group)
+        *mark_end = strlen (sbuf_get (buffer));
+    }
+}
+
 rp_group *
 group_new (int number, char *name)
 {