Need some m4 wizardry to quote []s in configure.ac

[Jeremy Huddleston]

On Mar 4, 2011, at 11:42, Gaetan Nadon wrote:

> On Fri, 2011-03-04 at 10:50 -0800, Jeremy Huddleston wrote:
> 
>> How do I quote []s in m4?  I've tried escaping with \, 's, "s, ... I'm out of tricks...  I'm trying to update the poll() checks in libxcb and libXt to allow poll on darwin11, but the []s are getting stripped.  darwin[789]* is becoming darwin789*, and the \([^ ]*\) in sed is becoming \(^ *\) ...
>> 
> 
> Check this out:
> 
> http://www.gnu.org/software/autoconf/manual/autoconf.html#Quadrigraphs
> 
> It is used in a few modules, I am not sure if this will solve the
> problem, I am not an expert but it's worth a look.

Thanks.  That was it.  Very odd, but it works.  I pushed the changes to libXt and libxcb.  Did you have any pending cleanup for libXt?  If not, I'll push a release since it's seems to need one.

Thanks,
Jeremy