[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Old Index]
Re: Unanticipated /bin/sh change a few weeks ago
Date: Sun, 18 Jun 2017 12:15:06 +0200
From: Edgar =?iso-8859-1?B?RnXf?= <ef%math.uni-bonn.de@localhost>
| > Which of those do people think best?
| What does Lin^Wbash allow?
bash implements just posix function definitions (only compound commands.)
(They also allow a form with a "function" keyword, as does ksh93, but that's
not material.) So does yash.
dash allows a simple command on a function definition, but strictly
that (not ! simplecommand). So does zsh, and ksh93, and the FreeBSD shell.
This is what we have today.
mksh (and our pdksh derived /bin/ksh) permit fn () ! command (and fn() cmd)
Note I tested what is allowed for definitions, I didn't test that they
worked as expected...
There's also almost no rational reason anyone would use the
extra (non standard) syntax in a script (and if they do, they deserve
to have it fail - scripts should always use standard syntax when
possible, abbreviating to save a few bytes isn't worth the hassle).
The most likely uses for the abbreviated form are for interactive typing.
Main Index |
Thread Index |