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Re: add --match argument to git-version-gen

From: Eric Blake
Subject: Re: add --match argument to git-version-gen
Date: Mon, 09 Jul 2012 04:47:26 -0600
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:13.0) Gecko/20120615 Thunderbird/13.0.1

On 07/07/2012 02:42 PM, Jim Meyering wrote:

>> +function massage_git_version() {
>> +    local v=$1
> Using the "function" and "local" keywords would make this script
> fail for some older shells.  I'd like to remain portable to those.

Not just older shells.  POSIX does not require either 'function' or
'local', so they cannot be portably used.

foo() { ...; } is the portable alternative that avoids 'function'.

There is no portable way to do scope limiting of function variables.
I'd like to add either 'local' or 'typeset' to the next version of
POSIX, but Chet Ramey (bash) and David Korn (ksh) have a strongly
divided opinion on whether dynamic (bash) or static (ksh) scoping should
be standardized.

Eric Blake   address@hidden    +1-919-301-3266
Libvirt virtualization library http://libvirt.org

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