GNU bug report logs - #18545
24.4.50: Bug - forward-line inside with-selected-window

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From: Eli Zaretskii <eliz <at> gnu.org>
To: lompik <at> voila.fr
Cc: 18545 <at> debbugs.gnu.org
Subject: bug#18545: 24.4.50: Bug - forward-line inside with-selected-window
Date: Thu, 25 Sep 2014 18:20:34 +0300

> From: Eli Zaretskii <eliz <at> gnu.org>
> Cc: 18545 <at> debbugs.gnu.org
> 
> This works OK in v24.3, so it's a regression.

The patch below seems to fix the problem.  It catches the situation
where try_window failed to redisplay the window, in which case we
shouldn't "goto done" as if we succeeded.


=== modified file 'src/xdisp.c'
--- src/xdisp.c	2014-09-18 15:10:33 +0000
+++ src/xdisp.c	2014-09-25 15:15:42 +0000
@@ -16293,6 +16293,11 @@ redisplay_window (Lisp_Object window, bo
 	    }
 	  */
 	}
+      else if (w->cursor.vpos < 0)
+	{
+	  clear_glyph_matrix (w->desired_matrix);
+	  goto try_to_scroll;
+	}
 
 #ifdef GLYPH_DEBUG
       debug_method_add (w, "forced window start");

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