Japanese characters don't wrap correctly on window title

[kerunaru]

Here the title is correct, showing the character "Ｃ".

Here is corrupted.

I recall japanese characters are bigger than ASCII ones… Could it be vtm is splitting the character without considering this?

[o-sdn-o]

At this point, vtm wraps text strings cell by cell, so any wide characters are split in half. These are CJK, Emoji and all other wide Unicode characters. The problem will be resolved with the hyphenation module (it is not ready yet). This will allow wrap graphemes (and words) without splitting in half.

[o-sdn-o]

Since no terminal is yet able to display halves of wide characters, they are displayed with a placeholder

[o-sdn-o]

Related discussion microsoft/terminal#4345

[o-sdn-o]

[o-sdn-o]

So far, I've only solved this issue with window titles. The built-in terminal still cuts wide characters in half when wrapping.

[o-sdn-o]

This functionality is available in v0.5.9999.