(try_window_id): Use DEC_BOTH unconditionally.

(display_text_line): Likewise.

diff --git a/src/xdisp.c b/src/xdisp.c
index 301bd50dc416f366eb3d6eb46fee4a3148e600e0..da3d10a77b24ed6a00a8ff6fa011d14e2be21562 100644 (file)
--- a/src/xdisp.c
+++ b/src/xdisp.c
@@ -2520,7 +2520,6 @@ try_window_id (window)
   int selective = (INTEGERP (current_buffer->selective_display)
                   ? XINT (current_buffer->selective_display)
                   : !NILP (current_buffer->selective_display) ? -1 : 0);
-  int multibyte = !NILP (current_buffer->enable_multibyte_characters);
   struct position val, bp, ep, xp, pp;
   int scroll_amount = 0;
   int delta;
@@ -2599,11 +2598,7 @@ try_window_id (window)
       val.hpos = bp.prevhpos - width + lmargin;
       val.tab_offset = bp.tab_offset + bp.prevhpos - width;
       did_motion = 1;
-      pos--;
-      if (multibyte)
-       DEC_POS (pos_byte);
-      else
-       pos_byte--;
+      DEC_BOTH (pos, pos_byte);
     }
 
   bp.vpos = vpos;
@@ -2866,11 +2861,7 @@ try_window_id (window)
        {
          val.hpos = xp.prevhpos - width + lmargin;
          val.tab_offset = xp.tab_offset + bp.prevhpos - width;
-         pos--;
-         if (multibyte)
-           DEC_POS (pos_byte);
-         else
-           pos_byte--;
+         DEC_BOTH (pos, pos_byte);
        }
 
       blank_end_of_window = 1;
@@ -3277,12 +3268,9 @@ display_text_line (w, start, start_byte, vpos, hpos, taboffset, ovstr_done)
       if (left_edge->vpos > vpos
           || left_edge->hpos > 0)
         {
-          pos = left_edge->bufpos - 1;
+          pos = left_edge->bufpos;
          pos_byte = left_edge->bytepos;
-         if (multibyte)
-           DEC_POS (pos_byte);
-         else
-           pos_byte--;
+         DEC_BOTH (pos, pos_byte);
           hpos = left_edge->prevhpos;
         }
       else
@@ -3926,11 +3914,7 @@ display_text_line (w, start, start_byte, vpos, hpos, taboffset, ovstr_done)
            {
              *p1++ = fix_glyph (f, continuer, 0);
              val.vpos = 0;
-             lastpos--;
-             if (multibyte)
-               DEC_POS (lastpos_byte);
-             else
-               lastpos_byte--;
+             DEC_BOTH (lastpos, lastpos_byte);
              val.tab_offset = taboffset + width;
            }
        }