Re: [PATCH v2 0/2] auto-detect getdelim()

> This series updates config.mak.uname to define HAVE_GETDELIM on Mac OS X
> when appropriate, and adds a configure check for the same.
> 
> Changes since v1[1]:
> 
> patch 1/2 -- optimize OS X version recognition:
> 
> * Use `...` for 'expr' invocation to extract digits from $(uname_R),
>   thus only a fork(), rather than gmake $(shell...), which spawns via
>   fork()+exec().
> 
> * Use 'test' relational operator -ge rather than 'expr >=', along with
>   'echo' to compare version number. Since 'test' and 'echo' are
>   typically shell builtins, this should be faster than invoking 'expr' a
>   second time.
> 
> patch 2/2 -- unchanged