> I do a lot of ad hoc filtering of HTML files using shell
pipelines.
> I test those pipelines in XEmacs using shell-command-on-region.  With
> 21.5 I notice this process has become abysmally slow.   
    tbennett> Maybe the following patch will help you.  
Thanks, this worked perfectly.  Maybe this should be reapplied to the
source.
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