(Ftranspose_regions): Validate interval before setting text

properties.

1 files changed, 20 insertions, 11 deletions

diff --git a/src/editfns.c b/src/editfns.c
index 59ac4de4c6b..2ab852d2925 100644
--- a/src/editfns.c
+++ b/src/editfns.c
@@ -4119,7 +4119,7 @@ Transposing beyond buffer boundaries is an error.  */)
   int gap, len1, len_mid, len2;
   unsigned char *start1_addr, *start2_addr, *temp;
 
-  INTERVAL cur_intv, tmp_interval1, tmp_interval_mid, tmp_interval2;
+  INTERVAL cur_intv, tmp_interval1, tmp_interval_mid, tmp_interval2, tmp_interval3;
   Lisp_Object buf;
 
   XSETBUFFER (buf, current_buffer);
@@ -4231,8 +4231,9 @@ Transposing beyond buffer boundaries is an error.  */)
       tmp_interval2 = copy_intervals (cur_intv, start2, len2);
       /* Don't use Fset_text_properties: that can cause GC, which can
          clobber objects stored in the tmp_intervals.  */
-      set_text_properties_1 (make_number (start1), make_number (end2),
-                             Qnil, buf, NULL);
+      tmp_interval3 = validate_interval_range (buf, &startr1, &endr2, 0);
+      if (!NULL_INTERVAL_P (tmp_interval3))
+        set_text_properties_1 (startr1, endr2, Qnil, buf, tmp_interval3);
 
       /* First region smaller than second.  */
       if (len1_byte < len2_byte)
@@ -4288,10 +4289,14 @@ Transposing beyond buffer boundaries is an error.  */)
           record_change (start2, len2);
           tmp_interval1 = copy_intervals (cur_intv, start1, len1);
           tmp_interval2 = copy_intervals (cur_intv, start2, len2);
-          set_text_properties_1 (make_number (start1), make_number (end1),
-                                 Qnil, buf, NULL);
-          set_text_properties_1 (make_number (start2), make_number (end2),
-                                 Qnil, buf, NULL);
+
+          tmp_interval3 = validate_interval_range (buf, &startr1, &endr1, 0);
+          if (!NULL_INTERVAL_P (tmp_interval3))
+            set_text_properties_1 (startr1, endr1, Qnil, buf, tmp_interval3);
+
+          tmp_interval3 = validate_interval_range (buf, &startr2, &endr2, 0);
+          if (!NULL_INTERVAL_P (tmp_interval3))
+            set_text_properties_1 (startr2, endr2, Qnil, buf, tmp_interval3);
 
           SAFE_ALLOCA (temp, unsigned char *, len1_byte);
           start1_addr = BYTE_POS_ADDR (start1_byte);
@@ -4317,8 +4322,10 @@ Transposing beyond buffer boundaries is an error.  */)
           tmp_interval1 = copy_intervals (cur_intv, start1, len1);
           tmp_interval_mid = copy_intervals (cur_intv, end1, len_mid);
           tmp_interval2 = copy_intervals (cur_intv, start2, len2);
-          set_text_properties_1 (make_number (start1), make_number (end2),
-                                 Qnil, buf, NULL);
+
+          tmp_interval3 = validate_interval_range (buf, &startr1, &endr2, 0);
+          if (!NULL_INTERVAL_P (tmp_interval3))
+            set_text_properties_1 (startr1, endr2, Qnil, buf, tmp_interval3);
 
           /* holds region 2 */
           SAFE_ALLOCA (temp, unsigned char *, len2_byte);
@@ -4348,8 +4355,10 @@ Transposing beyond buffer boundaries is an error.  */)
           tmp_interval1 = copy_intervals (cur_intv, start1, len1);
           tmp_interval_mid = copy_intervals (cur_intv, end1, len_mid);
           tmp_interval2 = copy_intervals (cur_intv, start2, len2);
-          set_text_properties_1 (make_number (start1), make_number (end2),
-                                 Qnil, buf, NULL);
+
+          tmp_interval3 = validate_interval_range (buf, &startr1, &endr2, 0);
+          if (!NULL_INTERVAL_P (tmp_interval3))
+            set_text_properties_1 (startr1, endr2, Qnil, buf, tmp_interval3);
 
           /* holds region 1 */
           SAFE_ALLOCA (temp, unsigned char *, len1_byte);