X-Git-Url: https://git.distorted.org.uk/~mdw/sgt/agedu/blobdiff_plain/645dbd491c48a1558fe16b99c3e4410459dd1852..9cb5a01c092b01a09480b3937a871445806852c7:/agedu.c

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;