Eric Wong <normalperson / yhbt.net> wrote:
> cremno / mail.ru wrote:
> > Also `rb_io_oflags_modestr()` didn't differentiate between `w+` and `r+`
> > before - was that intended?
> 
> I hope not, but it may also be too late to change without breaking
> existing code and causing major data loss...

Scratch that.  I misremembered what rb_io_oflags_modestr did :x