On 2013-11-21 04:59, David Adam wrote: > On Thu, 21 Nov 2013, David Adam wrote: >> On Wed, 20 Nov 2013, Marcin Zajączkowski wrote: >>> How can I determine that my function has something to on read stdin (to >>> not call "read" then which would open an interactive prompt)? >> >> This is a different question; the tty function does not check for the >> presence or absence of data on stdin. I don't actually know of a clever >> way of doing this from a shell script; in C I guess you'd do a select() >> with a zero timeout or something. > > I've just been informed that (at least in bash) you can use `read -n 0 -t > 0`, but this is not implemented in fish at this stage.
Thanks for your reply! I made a workaround in my function and first check if there are any params and later read from stdin which uses piped content or just the user for a text. Nevertheless it would be useful to have a way to tell read to fail immediately (and in my case display an error message to the user) when there is nothing on stdin, e.g. by using a simple switch. I created an issue: https://github.com/fish-shell/fish-shell/issues/1134 Marcin ------------------------------------------------------------------------------ Shape the Mobile Experience: Free Subscription Software experts and developers: Be at the forefront of tech innovation. Intel(R) Software Adrenaline delivers strategic insight and game-changing conversations that shape the rapidly evolving mobile landscape. Sign up now. http://pubads.g.doubleclick.net/gampad/clk?id=63431311&iu=/4140/ostg.clktrk _______________________________________________ Fish-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/fish-users
