this is a version of ed, a standard text editor.
it's written in go and follows closely the plan9 version of ed.
i decided to do it, because i want the same ed everywhere.
differences from original
more changes could be added in future versions.
buffer is imlemented as a slice of strings. this is not very good,
but for now it's kinda ok. this may change at some point.
this version uses go regexp package for regular expressions,
it is more rich than on plan9, see go doc regexp/syntax for more.
licence
MIT, as the plan9port. See LICENCE file for details.