(set_text_properties): New function. Like

Fset_text_properties, but with additional parameter
SIGNAL_AFTER_CHANGE_P.  If that is nil, don't signal after
changes.
(Fset_text_properties): Use it.

diff --git a/src/textprop.c b/src/textprop.c
index e7091b144dc78cb49b5aab9535d80d356f269daa..8b405a2bb44b5cd36a7deb7daaee17b27b702dc9 100644 (file)
--- a/src/textprop.c
+++ b/src/textprop.c
@@ -1086,6 +1086,21 @@ The optional fourth argument, OBJECT,\n\
 is the string or buffer containing the text.")
   (start, end, properties, object)
      Lisp_Object start, end, properties, object;
+{
+  return set_text_properties (start, end, properties, object, Qt);
+}
+
+
+/* Replace properties of text from START to END with new list of
+   properties PROPERTIES.  OBJECT is the buffer or string containing
+   the text.  OBJECT nil means use the current buffer.
+   SIGNAL_AFTER_CHANGE_P nil means don't signal after changes.  Value
+   is non-nil if properties were replaced; it is nil if there weren't
+   any properties to replace.  */
+
+Lisp_Object
+set_text_properties (start, end, properties, object, signal_after_change_p)
+     Lisp_Object start, end, properties, object, signal_after_change_p;
 {
   register INTERVAL i, unchanged;
   register INTERVAL prev_changed = NULL_INTERVAL;
@@ -1148,7 +1163,7 @@ is the string or buffer containing the text.")
          copy_properties (unchanged, i);
          i = split_interval_left (i, len);
          set_properties (properties, i, object);
-         if (BUFFERP (object))
+         if (BUFFERP (object) && !NILP (signal_after_change_p))
            signal_after_change (XINT (start), XINT (end) - XINT (start),
                                 XINT (end) - XINT (start));
 
@@ -1159,7 +1174,7 @@ is the string or buffer containing the text.")
 
       if (LENGTH (i) == len)
        {
-         if (BUFFERP (object))
+         if (BUFFERP (object) && !NILP (signal_after_change_p))
            signal_after_change (XINT (start), XINT (end) - XINT (start),
                                 XINT (end) - XINT (start));
 
@@ -1188,7 +1203,7 @@ is the string or buffer containing the text.")
          set_properties (properties, i, object);
          if (!NULL_INTERVAL_P (prev_changed))
            merge_interval_left (i);
-         if (BUFFERP (object))
+         if (BUFFERP (object) && !NILP (signal_after_change_p))
            signal_after_change (XINT (start), XINT (end) - XINT (start),
                                 XINT (end) - XINT (start));
          return Qt;
@@ -1208,7 +1223,7 @@ is the string or buffer containing the text.")
       i = next_interval (i);
     }
 
-  if (BUFFERP (object))
+  if (BUFFERP (object) && !NILP (signal_after_change_p))
     signal_after_change (XINT (start), XINT (end) - XINT (start),
                         XINT (end) - XINT (start));
   return Qt;