Re: Bash-specific performance by avoiding sed

[Bob Friesenhahn]

On Mon, 9 Mar 2015, Mike Gran wrote:

> Hello libtool,
>
> I don't know if y'all saw this blogpost where a guy pushed
> the sed regular expression handling into bash-specific
> regular expressions when bash was available.  He claims
> there's a significant performance improvement because of
> reduced forking.
>
> http://harald.hoyer.xyz/2015/03/05/libtool-getting-rid-of-180000-sed-forks/

There is an issue in the libtool bug tracker regarding this.

This solution only works with GNU bash.  It would be good if 
volunteers could research to see if there are similar solutions which 
can work with other common shells (e.g. dash, ksh, zsh).

Bob
--
Bob Friesenhahn
address@hidden, http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer,    http://www.GraphicsMagick.org/