From 9cb5a01c092b01a09480b3937a871445806852c7 Mon Sep 17 00:00:00 2001
From: simon <simon@cda61777-01e9-0310-a592-d414129be87e>
Date: Sat, 8 Nov 2008 07:59:55 +0000
Subject: [PATCH] If TIOCGWINSZ returns a window size of zero, treat it as
 "window size unavailable".

git-svn-id: svn://svn.tartarus.org/sgt/agedu@8290 cda61777-01e9-0310-a592-d414129be87e
---
 agedu.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/agedu.c b/agedu.c
index 5b836e7..9ff6bb8 100644
--- a/agedu.c
+++ b/agedu.c
@@ -949,7 +949,9 @@ int main(int argc, char **argv)
 	    ctx->progress = progress;
 	    {
 		struct winsize ws;
-		if (progress && ioctl(2, TIOCGWINSZ, &ws) == 0)
+		if (progress &&
+		    ioctl(2, TIOCGWINSZ, &ws) == 0 &&
+		    ws.ws_col > 0)
 		    ctx->progwidth = ws.ws_col - 1;
 		else
 		    ctx->progwidth = 79;
-- 
2.11.0