Hi Brian, there's a problem with the grep package. It uses the internally provided GNULIB regex library.
Unfortunately, that's the default if the system doesn't provide a more recent GLibc. Which we'll never do. The problem is this: Native language support in GNULIB's regex is *only* available, if it's built as part of GLibc. I'd like to ask you to rebuild grep 3.9 with the --without-included-regex option. That will allow grep to use Cygwin's own regex, which already comes with basic native language support, and which I'm working on to sbetter support equivalence class and collation symbol expressions. Thanks, Corinna
