From e80a522fcc0657545a8d5ba9ac13ba7f8f2c6703 Mon Sep 17 00:00:00 2001
From: Sam Hocevar <sam@hocevar.net>
Date: Tue, 26 Sep 2006 21:39:07 +0000
Subject: [PATCH]   * Do not try to autocrop a canvas that has only spaces.

---
 src/filters.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/filters.c b/src/filters.c
index 8cb99c9..15a9caa 100644
--- a/src/filters.c
+++ b/src/filters.c
@@ -51,6 +51,9 @@ void filter_autocrop(cucul_canvas_t *cv)
         }
     }
 
+    if(xmax < xmin || ymax < ymin)
+        return;
+
     cucul_set_canvas_boundaries(cv, xmin, ymin,
                                 xmax - xmin + 1, ymax - ymin + 1);
 }