(set_text_properties_1): New subroutine, broken out of set_text_properties.

(set_text_properties): Use set_text_properties_1.

diff --git a/src/textprop.c b/src/textprop.c
index 76600728d158adf89476d57e04c5e4f0e11177b4..c56db051bb3502b4c5258fd95a1957088eafbe82 100644 (file)
--- a/src/textprop.c
+++ b/src/textprop.c
@@ -1290,12 +1290,37 @@ set_text_properties (start, end, properties, object, signal_after_change_p)
        return Qnil;
     }
 
-  s = XINT (start);
-  len = XINT (end) - s;
-
   if (BUFFERP (object))
     modify_region (XBUFFER (object), XINT (start), XINT (end));
 
+  set_text_properties_1 (start, end, properties, object, i);
+
+  if (BUFFERP (object) && !NILP (signal_after_change_p))
+    signal_after_change (XINT (start), XINT (end) - XINT (start),
+                        XINT (end) - XINT (start));
+  return Qt;
+}
+
+/* Replace properties of text from START to END with new list of
+   properties PROPERTIES.  BUFFER is the buffer containing
+   the text.  This does not obey any hooks.
+   You can provide the interval that START is located in as I,
+   or pass NULL for I and this function will find it.  */
+
+void
+set_text_properties_1 (start, end, properties, buffer, i)
+     Lisp_Object start, end, properties, buffer;
+     INTERVAL i;
+{
+  register INTERVAL prev_changed = NULL_INTERVAL;
+  register int s, len;
+  INTERVAL unchanged;
+
+  s = XINT (start);
+  len = XINT (end) - s;
+  if (i == 0)
+    i = find_interval (BUF_INTERVALS (XBUFFER (buffer)), s);
+
   if (i->position != s)
     {
       unchanged = i;
@@ -1305,24 +1330,14 @@ set_text_properties (start, end, properties, object, signal_after_change_p)
        {
          copy_properties (unchanged, i);
          i = split_interval_left (i, len);
-         set_properties (properties, i, object);
-         if (BUFFERP (object) && !NILP (signal_after_change_p))
-           signal_after_change (XINT (start), XINT (end) - XINT (start),
-                                XINT (end) - XINT (start));
-
-         return Qt;
+         set_properties (properties, i, buffer);
+         return;
        }
 
-      set_properties (properties, i, object);
+      set_properties (properties, i, buffer);
 
       if (LENGTH (i) == len)
-       {
-         if (BUFFERP (object) && !NILP (signal_after_change_p))
-           signal_after_change (XINT (start), XINT (end) - XINT (start),
-                                XINT (end) - XINT (start));
-
-         return Qt;
-       }
+       return;
 
       prev_changed = i;
       len -= LENGTH (i);
@@ -1343,13 +1358,10 @@ set_text_properties (start, end, properties, object, signal_after_change_p)
          /* We have to call set_properties even if we are going to
             merge the intervals, so as to make the undo records
             and cause redisplay to happen.  */
-         set_properties (properties, i, object);
+         set_properties (properties, i, buffer);
          if (!NULL_INTERVAL_P (prev_changed))
            merge_interval_left (i);
-         if (BUFFERP (object) && !NILP (signal_after_change_p))
-           signal_after_change (XINT (start), XINT (end) - XINT (start),
-                                XINT (end) - XINT (start));
-         return Qt;
+         return;
        }
 
       len -= LENGTH (i);
@@ -1357,7 +1369,7 @@ set_text_properties (start, end, properties, object, signal_after_change_p)
       /* We have to call set_properties even if we are going to
         merge the intervals, so as to make the undo records
         and cause redisplay to happen.  */
-      set_properties (properties, i, object);
+      set_properties (properties, i, buffer);
       if (NULL_INTERVAL_P (prev_changed))
        prev_changed = i;
       else
@@ -1365,11 +1377,6 @@ set_text_properties (start, end, properties, object, signal_after_change_p)
 
       i = next_interval (i);
     }
-
-  if (BUFFERP (object) && !NILP (signal_after_change_p))
-    signal_after_change (XINT (start), XINT (end) - XINT (start),
-                        XINT (end) - XINT (start));
-  return Qt;
 }
 
 DEFUN ("remove-text-properties", Fremove_text_properties,