On Wed, Nov 13, 2013 at 10:49:24AM +0800, David Adam wrote: > > I also think ignoring errors should be explicit; the default should be > > exit-on-failure (though I'll understand that it might be too late to change > > due to backward compatibility) > It would definitely have to wait for a new major release of fish, I think.
indeed. though i wonder what would be a good path to not surprise anyone with such a change? start with printing a warning now? and educate users on how to write the script so that it doesn't crash? (how would that look like btw? false; # this would generate a warning first and cause an exit later. false; or true; # this would catch the warning and error. false; or echo $status; true; # handle the error) false; or exit; # force exit, works now, will continue to work in the future. add an option/setting equivalent to bash -e which will turn into a no-op later, so that people can write scripts in a future-compatible way and test whether such a change is even feasable. also, how to check if there is actually a fatal error? programs use the exit status to convey other information than just an error. maybe this should only happen on the values given here: http://tldp.org/LDP/abs/html/exitcodes.html#EXITCODESREF 1 Catchall for general errors 2 Misuse of shell builtins (bash) 126 Command invoked cannot execute 127 "command not found" 128 Invalid argument to exit 128+n Fatal error signal "n" 130 Script terminated by Control-C (abd also by ctrl-z) 255* Exit status out of range this is more complex that it looked initially. greetings, martin. -- eKita - the online platform for your entire academic life hackerspace beijing - http://qike.info -- chief engineer eKita.co pike programmer pike.lysator.liu.se caudium.net foresight developer realss.com foresightlinux.org unix sysadmin trainer developer societyserver.org Martin Bähr working in china http://societyserver.org/mbaehr/ ------------------------------------------------------------------------------ DreamFactory - Open Source REST & JSON Services for HTML5 & Native Apps OAuth, Users, Roles, SQL, NoSQL, BLOB Storage and External API Access Free app hosting. Or install the open source package on any LAMP server. Sign up and see examples for AngularJS, jQuery, Sencha Touch and Native! http://pubads.g.doubleclick.net/gampad/clk?id=63469471&iu=/4140/ostg.clktrk _______________________________________________ Fish-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/fish-users
