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Re: add a way to declare global variables


From: DennisW
Subject: Re: add a way to declare global variables
Date: Sat, 12 Dec 2009 06:25:29 -0800 (PST)
User-agent: G2/1.0

On Dec 12, 4:24 am, Bernd Eggink <address@hidden> wrote:
> Am 12.12.2009 02:11, schrieb Matthew Woehlke:
>
> > konsolebox wrote:
> >> I hope the development team will also consider adding a way in bash to
> >> declare global variables inside a function perhaps either with an
> >> option in typeset or declare like -g (same as zsh) and/or a builtin
> >> function like global as similar to local.
>
> > I thought variables in functions were /always/ global unless declared
> > local?
>
> It's the other way round. Regarding typeset and declare, the man page
> says: " When used in a function, makes  each name local, as with the
> local command. " So within a function, typeset, declare, and local are
> synonyms. Using 'local' outside a function is an error, so IMHO this
> command is completely redundant. It _would_ make some sense, however, if
> its counterpart 'global' existed, as it could help clarify the intended
> usage of the variable.
>
> Bernd
>
> --
> Bernd Egginkhttp://sudrala.de

$ vars () { var1=123; local var2=456; }
$ vars
$ echo "var1=$var1 "var2=$var2"
var1=123 var2=

How is that "the other way around"?


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