Cropping text in Golang?

Question

go

This is how I cut the text in the play.golang
script sometimes comes across at the end of �, as in the example.
Something I'm stupid, how is it more correct so that there is no this "kosyachny" symbol?

Answer 1

Yes, you have cropping not by characters, but by byte, here is an example of working through rune
play.golang.org/p/A732dMq-5O