On Thu, Jun 05, 2008 at 06:31:36AM +0200, Jan Schampera wrote:
[...]
> The function definition is allowed in 3 forms:
> 1. NAME() ...
That's the Bourne and POSIX syntax
> 3. function NAME ...
That's the ksh syntax. It's probably only there for
compatibility with ksh (note that bash doesn't make the same
distinctions as AT&T ksh does when using that syntax). ksh
doesn't support function foo (echo), so it's fine with bash not
to either, I'd say.
> 2. function NAME() ...
[...]
Not sure where that syntax comes from. It could be that it works
by accident or it could be that someone thought that it was a
good idea to have yet another syntax. It happens to be the same
syntax as awk.
In anycase, given that those syntaxes are not different
functionnaly (contrary to in ksh), I think it would be a good
idea to have the manual say that only "1." should be used as
it's the standard one.
I suspect this:
$ sh -c 'function() { echo a; }; function'
sh: -c: line 0: syntax error near unexpected token `('
sh: -c: line 0: `function() { echo a; }; function'
breaks POSIX conformance, BTW (but then it's the same for AT&T
ksh, pdksh, zsh).
--
Stéphane
