On 11/6/18 8:40 AM, Steven Penny wrote:

> GNU Grep supports the "[:blank:]" class as well - but is not documented:
> 
> http://git.savannah.gnu.org/cgit/grep.git/tree/doc/grep.in.1?id=30e666c#n796

Thanks for reporting this mismatch between the main documentation and the man page. I installed the attached patch to fix it.