bug#20678: new bug that Paul "asked" for... grep -P aborts on non-utf8 input.

[Paul Eggert]

On 05/27/2015 02:41 PM, L. A. Walsh wrote:
> *** file = libvtkUtilitiesPythonInitializer-pv4.2.so.1
> grep: invalid UTF-8 byte sequence in input 

This looks like you're using an old version of libpcre, or of grep. I 
can't reproduce the problem with the latest stable versions of both 
(libpcre 8.37, grep-2.21).  I can find similar problems if I use old 
libpcre.