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-rw-r--r--miscutils/ttysize.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/miscutils/ttysize.c b/miscutils/ttysize.c
index 135ce85..cba65b1 100644
--- a/miscutils/ttysize.c
+++ b/miscutils/ttysize.c
@@ -25,7 +25,7 @@
//usage:#define ttysize_trivial_usage
//usage: "[w] [h]"
//usage:#define ttysize_full_usage "\n\n"
-//usage: "Print dimension(s) of stdin's terminal, on error return 80x25"
+//usage: "Print dimensions of stdin tty, or 80x24"
#include "libbb.h"
@@ -37,7 +37,10 @@ int ttysize_main(int argc UNUSED_PARAM, char **argv)
w = 80;
h = 24;
- if (!ioctl(0, TIOCGWINSZ, &wsz)) {
+ if (ioctl(0, TIOCGWINSZ, &wsz) == 0
+ || ioctl(1, TIOCGWINSZ, &wsz) == 0
+ || ioctl(2, TIOCGWINSZ, &wsz) == 0
+ ) {
w = wsz.ws_col;
h = wsz.ws_row;
}