Revision: miles@gnu.org--gnu-2004/emacs--unicode--0--patch-15

[bpt/emacs.git] / src / buffer.h

diff --git a/src/buffer.h b/src/buffer.h
index 0755db2..47f0056 100644 (file)
--- a/src/buffer.h
+++ b/src/buffer.h
@@ -1,5 +1,5 @@
 /* Header file for the buffer manipulation primitives.
-   Copyright (C) 1985, 86, 93, 94, 95, 97, 1998, 1999, 2000, 01, 2003
+   Copyright (C) 1985,86,93,94,95,97,98,99,2000,01,03,04
    Free Software Foundation, Inc.
 
 This file is part of GNU Emacs.
@@ -827,6 +827,25 @@ extern void buffer_slot_type_mismatch P_ ((int));
 extern void fix_overlays_before P_ ((struct buffer *, EMACS_INT, EMACS_INT));
 extern void mmap_set_vars P_ ((int));
 
+/* Get overlays at POSN into array OVERLAYS with NOVERLAYS elements.
+   If NEXTP is non-NULL, return next overlay there.
+   See overlay_at arg CHANGE_REQ for meaning of CHRQ arg.  */
+
+#define GET_OVERLAYS_AT(posn, overlays, noverlays, nextp, chrq)                \
+  do {                                                                 \
+    int maxlen = 40;                                                   \
+    overlays = (Lisp_Object *) alloca (maxlen * sizeof (Lisp_Object)); \
+    noverlays = overlays_at (posn, 0, &overlays, &maxlen,              \
+                            nextp, NULL, chrq);                                \
+    if (noverlays > maxlen)                                            \
+      {                                                                        \
+       maxlen = noverlays;                                             \
+       overlays = (Lisp_Object *) alloca (maxlen * sizeof (Lisp_Object)); \
+       noverlays = overlays_at (posn, 0, &overlays, &maxlen,           \
+                                nextp, NULL, chrq);                    \
+      }                                                                        \
+  } while (0)
+
 EXFUN (Fbuffer_live_p, 1);
 EXFUN (Fbuffer_name, 1);
 EXFUN (Fget_file_buffer, 1);