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author | Ingo Schwarze <schwarze@openbsd.org> | 2014-11-16 21:29:35 +0000 |
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committer | Ingo Schwarze <schwarze@openbsd.org> | 2014-11-16 21:29:35 +0000 |
commit | 194fdd32fe2e8d95e8130915d406a4509ac1caf7 (patch) | |
tree | 8ff73a1f945949530d9c791de4911827c17d01fb /term.c | |
parent | b105c57e618a333c213bf981be42c1a5de1e213e (diff) | |
download | mandoc-194fdd32fe2e8d95e8130915d406a4509ac1caf7.tar.gz mandoc-194fdd32fe2e8d95e8130915d406a4509ac1caf7.tar.zst mandoc-194fdd32fe2e8d95e8130915d406a4509ac1caf7.zip |
When a line (in the sense of term_flushln()) contains white space only,
the `vbl' variable includes the left margin, but `vis' does not.
Prevent a `vis' underflow that caused a bogus blank line.
Bug reported by Carsten Kunze, found in less(1): .Bl -tag ... .It " "
Diffstat (limited to 'term.c')
-rw-r--r-- | term.c | 6 |
1 files changed, 4 insertions, 2 deletions
@@ -1,4 +1,4 @@ -/* $Id: term.c,v 1.234 2014/11/01 04:03:49 schwarze Exp $ */ +/* $Id: term.c,v 1.235 2014/11/16 21:29:35 schwarze Exp $ */ /* * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv> * Copyright (c) 2010-2014 Ingo Schwarze <schwarze@openbsd.org> @@ -254,8 +254,10 @@ term_flushln(struct termp *p) * If there was trailing white space, it was not printed; * so reset the cursor position accordingly. */ - if (vis) + if (vis > vbl) vis -= vbl; + else + vis = 0; p->col = 0; p->overstep = 0; |