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

diff --git a/agedu.c b/agedu.c
index 5b836e7..9ff6bb8 100644 (file)
--- 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;