a box lines broken.

[tinywolf3]

why is the box line character broken?

captures

[gdamore]

Looking at your output, it looks like you may be using an east asian locale. The spacing in the output seems to suggest it.

I think there are probably some bugs with placement, as we don't handle ambiguous width characters well in those circumstances. What you can try is running the same program in an "en" locale.

Now having said that, it looks like those box characters may be single wide ("narrow") characters, which means that they are going to be rendered with extra surrounding whitespace. This absolutely depends on the locale, and maybe also the font.

[gdamore]

I just tried running the demo with env LC_ALL=ja.UTF-8 and I see the same behavior. The boxes should not be so wide in an English locale.

[gdamore]

That's what it should look like.

[gdamore]

As a workaround, try setting RUNEWIDTH_EASTASIAN=0 in your environment. This makes the ambiguous characters be assumed to have a narrow width rather than a wide one. That fixed it for me.

I believe the real problem here is that if you are operating with a font that isn't aware of your locale, then you're going to wind up with some characters being treated as wide even though they actually aren't wide (or full width) in the font.

This seems to be a recurring problem and I'm not actually sure what to do about it.

[tinywolf3]

thank you so much!
captures

[gdamore]

I'm starting to think that the default RUNEWIDTH value is wrong for most folks using terminal applications.