Zero-width characters

[superbobry]

The current behaviour regarding zero-width/combining characters is to append them to the char in the preceding cell. If there is no preceding cell -- nothing is printed (as reported by @chubin in #65). This sounds reasonable to me and I'd be happy to just leave that be, but other terminals handle these characters differently, e.g. iTerm simply prints the combining character on its own.

$ echo "\u0483"
 ҃

If you have an issue with pyte behaviour, please comment in this issue.