globbing and parameter expansion in 3.0.5

globbing and parameter expansion in 3.0.5

[Stefan Monnier]

There is a discrepency between bash and zsh when it comes to mixing parameter
expansion and globbing:

/-0% bash -c 'toto="*"; echo $toto'
System.map amd bin boot cdrom compressed core depots dev dos etc floppy home homes inittab kernel lib lost+found misc mnt net nfs proc root rpm sbin scratch softs tmp usr var windows wine
/-0% zsh -c 'toto="*"; echo $toto'
*
/-0% 

To me, bash behavior looks more consistent (since 'echo $foo/*' does the
parameter expansion before globbing), but compctl-examples seem to indicate
that at least the guy who wrote the man_glob function already knew about this
pecularity.

Which one is "correct" ?


	Stefan

Re: globbing and parameter expansion in 3.0.5

[Zefram]

Stefan Monnier wrote:
>/-0% bash -c 'toto="*"; echo $toto'
>System.map amd bin boot cdrom compressed core depots dev dos etc floppy home homes inittab kernel lib lost+found misc mnt net nfs proc root rpm sbin scratch softs tmp usr var windows wine
>/-0% zsh -c 'toto="*"; echo $toto'
>*

% zsh -c 'toto="*"; echo $toto'
*
% zsh -c 'toto="*"; echo $~toto'
bin data etc export man tmp usr
% ARGV0=sh zsh -c 'toto="*"; echo $toto'
bin data etc export man tmp usr
% ARGV0=bash zsh -c 'toto="*"; echo $toto'
bin data etc export man tmp usr

>Which one is "correct" ?

Both.  See GLOB_SUBST in zshoptions(1).

-zefram