[cfe-dev] Specify used regex syntax in clang-format documentation

[via cfe-dev]

Hi,
I was writing a configuration file for clang-format, especially regexes 
for the IncludeCategories option and I was trying to use character 
classes like \w which failed.

In the documentation there is no mention of the regex syntax used and I 
had to look into the source code for llvm::Regex to find out it is using 
Posix ERE.
It would be nice to have a note in the documentation which mentions that 
Posix ERE is used.

The bugtracker is closed for new users so I hope someone from this list 
could file a bug against the documentation.

--
André