Does window allow "{" "}" "," in the filename?

Yes, Windows allows braces "{" "}" and comma "," in filenames. Hopefully git on Windows can handle them too.

Seeing this here also. What happens is:

Updating git://github.com/rails/rails.git
error: unable to create file actionpack/test/fixtures/test/hello_w*rld.erb (Invalid argument)
Checking out files: 100% (2210/2210), done.
fatal: Could not reset index file to revision '94a780356cd2ea6c7cb1ce75525596b28857870b'.
Git error: command git reset --hard 94a780356cd2ea6c7cb1ce75525596b28857870b in directory C:/MinGW/local/ruby/lib/ruby/gems/1.9.1/bundler/gems/rails-94a780356cd2 has failed.
If this error persists you could try removing the cache directory 'C:/MinGW/local/ruby/lib/ruby/gems/1.9.1/cache/bundler/git/rails-16a5e918a06649ffac24fd5873b875daf66212ad'

Windows does not allow the following characters in a filename:

/:*?"<>|

I also ran into this issue:

Fetching git://github.com/rails/rails.git
remote: Counting objects: 252147, done.
remote: Compressing objects: 100% (61807/61807), done.
remote: Total 252147 (delta 196079), reused 242749 (delta 187883)
Receiving objects: 100% (252147/252147), 33.70 MiB | 643 KiB/s, done.
Resolving deltas: 100% (196079/196079), done.
error: unable to create file actionpack/test/fixtures/test/hello_w*rld.erb (Invalid argument)
fatal: Could not reset index file to revision '68424fb1cf45acda3ad1daef30136f3bcd4f9f9d'.
Git error: command git reset --hard 68424fb1cf45acda3ad1daef30136f3bcd4f9f9d in directory C:/Ruby192/lib/ruby/gems/1.9.1/bundler/gems/rails-68424fb1cf45 has failed
If this error persists you could try removing the cache directory 'C:/Ruby192/lib/ruby/gems/1.9.1/cache/bundler/git/rails-16a5e918a06649ffac24fd5873b875daf66212ad'

Could we get this fixed? Seems a bit draconian to totally break a platform for a test.

What do you need for this ticket to be included with in the Rails 3.1 release scope?

My concern is if this is not tagged for Rails 3.1, that their is a risk of Rails 3.1 not working/supporting on Windows hosts?

If you need me to fork and back out the commit 09ad48f, I can do that and submit a pull request.