Anonymous committed ea77e67

Make "git help" react to window size correctly

Currently the git "show commands" function will react to the environment
variable COLUMNS, or just default to a width of 80 characters.

That's just soo eighties. Nobody sane sets COLUMNS any more, unless they
need to support some stone-age software from before the age of steam

So get with the new century, and use TIOCGWINSZ to get the terminal size.

Signed-off-by: Linus Torvalds <>
Signed-off-by: Junio C Hamano <>

Comments (0)

Files changed (1)

 #include <errno.h>
 #include <limits.h>
 #include <stdarg.h>
+#include <sys/ioctl.h>
 #include "git-compat-util.h"
 #ifndef PATH_MAX
 	if (col_string && (n_cols = atoi(col_string)) > 0)
 		return n_cols;
+	{
+		struct winsize ws;
+		if (!ioctl(1, TIOCGWINSZ, &ws)) {
+			if (ws.ws_col)
+				return ws.ws_col;
+		}
+	}
 	return 80;
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