81a64f introduced double width for some single width characters

[HealsCodes]

I recently became aware of this thread in the mac_vim list.

In summary a user is complaining that suddenly his supplementary characters are rendered double width but should in fact be rendered single width.

I noticed the same for status characters used by a plugin in my setup.
Here's a screenshot of the issue:

After some bisecting I discovered the issue was introduced in 81a64f5 which implemented Emoji support.
The problem seems to be a result of a few new and changed, but now too generous, character ranges in src/mbyte.c.

Reverting only the changes to that file I get this:

I had a look at the unicode ranges for Emoji and - apart for the big Emoji block U+1F300+ - they are scattered across blocks in U+2300/U+2500/U+2600 und U+2700.

A proposed fix might be to check the output of runtime/unicode.vim and add the Emoji code points to the resulting doublewidth-table replacing the catch-all blocks that we have now.

[splhack]

I'll change mbyte.c.

[HealsCodes]

Anything I can give you a hand with?

I tried it myself but for some reason my test builds would sometimes stop displaying multibyte characters correctly at all..

Am 22.12.2015 um 22:59 schrieb Kazuki Sakamoto notifications@github.com:

I'll change mbyte.c.

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[splhack]

#187

[splhack]

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