[vte] emulation: Fix cursor backward movement

[Egmont Koblinger <egmontkob src gnome org>]

commit ec7b994b5b954b12866413d670fbf90287ce9ae5
Author: Egmont Koblinger <egmont gmail com>
Date:   Thu May 22 23:41:07 2014 +0200

    emulation: Fix cursor backward movement
    
    (broken since commit 60c0bca2f00cd55ea1eb42fd59fa017b62197c9d)

 src/vteseq.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/vteseq.c b/src/vteseq.c
index 3eeb3a7..c4b145c 100644
--- a/src/vteseq.c
+++ b/src/vteseq.c
@@ -1388,7 +1388,7 @@ vte_sequence_handler_cursor_backward (VteTerminal *terminal, GValueArray *params
                         val = MAX(g_value_get_long(value), 1);
                 }
         }
-        screen->cursor_current.col = MAX(screen->cursor_current.col - val, 1);
+        screen->cursor_current.col = MAX(screen->cursor_current.col - val, 0);
 }
 
 /* Cursor right N columns. */