Re: BUG?: (or what's going on?) test for NL == NL fails (bash-4.3.39(3)-release)

[Linda Walsh]

Greg Wooledge wrote:
> On Sun, Aug 02, 2015 at 01:30:14PM -0700, Linda Walsh wrote:
> > isatty () { test -c /proc/self/fd/1 ; }
>
> This can be done portably with test -t 1 if you want the body of the
> function to do what the name implies.  (Testing for a character device
> gives false positives if stdout is a tape drive or similar device.)
---
-t is portable?   I vaguely remember -t -- but I know I didn't when
I wrote that function...  thanks for the update!