(redisplay_window): Check return value of

compute_window_start_on_continuation_line before forcing a window
start.

1 files changed, 8 insertions, 3 deletions

diff --git a/src/xdisp.c b/src/xdisp.c
index 88882cf1a1d..431541c608d 100644
--- a/src/xdisp.c
+++ b/src/xdisp.c
@@ -13658,11 +13658,16 @@ redisplay_window (window, just_this_one_p)
           && NILP (do_mouse_tracking)
           && CHARPOS (startp) > BEGV
           && CHARPOS (startp) > BEG + beg_unchanged
-          && CHARPOS (startp) <= Z - end_unchanged)
+          && CHARPOS (startp) <= Z - 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;
         }