IO#readpartial problem

[towerhe]

I'm trying to migrate unix_utils to windows. All the needed command are provided by cygwin. But there are some problem needed to handle.

Firstly, IO#readpartial doesn't work on windows with jruby. It reports: readpartial only works with Nio based handlers.

Can we use IO#readline instead of IO#readpartial when running on windows?

[seamusabshere]

sure, give it a try (and why IO#readline and not IO#gets?)

thank you @towerhe for your excellent work!