(redisplay_window): Check return value of

compute_window_start_on_continuation_line before forcing a window
start.

diff --git a/src/xdisp.c b/src/xdisp.c
index 897dd440f1550161d52c243e1315a5e0644b79fe..4cc4b5f233e669aede063940ceb33b589da3ac72 100644 (file)
--- a/src/xdisp.c
+++ b/src/xdisp.c
@@ -13239,14 +13239,19 @@ redisplay_window (window, just_this_one_p)
          && NILP (do_mouse_tracking)
          && CHARPOS (startp) > BEGV
          && CHARPOS (startp) > BEG + save_beg_unchanged
-         && CHARPOS (startp) <= Z - save_end_unchanged)
+         && CHARPOS (startp) <= Z - save_end_unchanged
+         /* Even if w->start_at_line_beg is nil, a new window may
+            start at a line_beg, since that's how set_buffer_window
+            sets it.  So, we need to check the return value of
+            compute_window_start_on_continuation_line.  (See also
+            bug#197).  */
+         && XMARKER (w->start)->buffer == current_buffer
+         && compute_window_start_on_continuation_line (w))
        {
          w->force_start = Qt;
-         if (XMARKER (w->start)->buffer == current_buffer)
-           compute_window_start_on_continuation_line (w);
          SET_TEXT_POS_FROM_MARKER (startp, w->start);
          goto force_start;
-       }
+       }
 
 #if GLYPH_DEBUG
       debug_method_add (w, "same window start");