Re: getopts doesn't properly update OPTIND when called from function

[Herbert Xu <herbert@gondor.apana.org.au>]

Harald van Dijk <harald@gigawatt.nl> wrote:
> That isn't the problem, not exactly anyway. The problem is that getopts 
> is required to keep internal state separately from the OPTIND variable 
> (a single integer is insufficient to track the progress when multiple 
> options are combined in a single word), and that internal state is 
> stored along with the positional parameters. The positional parameters 
> are saved just before a function call, and restored when the function 
> returns. The internal state of getopts should not be saved the same way. 
> It should probably just be global to dash.

I think the current behaviour is fine as far as POSIX is concerned.
It says:

http://pubs.opengroup.org/onlinepubs/9699919799/utilities/getopts.html

: APPLICATION USAGE

...

: Note that shell functions share OPTIND with the calling shell
: even though the positional parameters are changed. If the calling
: shell and any of its functions uses getopts to parse arguments,
: the results are unspecified.

Cheers,
-- 
Email: Herbert Xu <herbert@gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
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