X-Git-Url: https://code.delx.au/gnu-emacs/blobdiff_plain/9be191c94f5f8756680949d010f0735113ff0dae..9a5114ac7e384d28a13c99725380b6024abde5cf:/src/marker.c

diff --git a/src/marker.c b/src/marker.c
index fb97c064cf..a11068d69d 100644
--- a/src/marker.c
+++ b/src/marker.c
@@ -15,7 +15,8 @@ GNU General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with GNU Emacs; see the file COPYING.  If not, write to
-the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
+the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA.  */
 
 
 #include <config.h>
@@ -312,6 +313,32 @@ If TYPE is nil, it means the marker stays behind when you insert text at it.")
   XMARKER (marker)->insertion_type = ! NILP (type);
   return type;
 }
+
+DEFUN ("buffer-has-markers-at", Fbuffer_has_markers_at, Sbuffer_has_markers_at,
+  1, 1, 0,
+  "Return t if there are markers pointing at POSITION in the currentbuffer.")
+  (position)
+      Lisp_Object position;
+{
+  register Lisp_Object tail;
+  register int charno;
+
+  charno = XINT (position);
+
+  if (charno < BEG)
+    charno = BEG;
+  if (charno > Z)
+    charno = Z;
+  if (charno > GPT) charno += GAP_SIZE;
+
+  for (tail = BUF_MARKERS (current_buffer);
+       XSYMBOL (tail) != XSYMBOL (Qnil);
+       tail = XMARKER (tail)->chain)
+    if (XMARKER (tail)->bufpos == charno)
+      return Qt;
+
+  return Qnil;
+}
 
 syms_of_marker ()
 {
@@ -321,4 +348,5 @@ syms_of_marker ()
   defsubr (&Scopy_marker);
   defsubr (&Smarker_insertion_type);
   defsubr (&Sset_marker_insertion_type);
+  defsubr (&Sbuffer_has_markers_at);
 }