Strange behavior when using hBox with unicode char

[sifmelcara]

module Main where

import qualified Brick.Main as M
import qualified Brick.Widgets.Core as WC

ui = WC.vLimit h . WC.hLimit 5 $ WC.hBox
    [ WC.str text2 
    , WC.vLimit h $ WC.fill '$'
    ]
    where
    h = 3
    text1 = "    \n寬字\n    \n"
    text2 = "    \nabcd\n    \n"

main :: IO ()
main = M.simpleMain ui

The program displays

    $
abcd$
    $

But when I replace WC.str text2 by WC.str text1, it displays

寬字 

Both abcd and 寬字 occupy 4 display length in my terminal.
Maybe there is something wrong with wide character rendering?

[jtdaugherty]

Right now, wide characters are not supported. I've had it on my TODO list for some time, but I haven't spent any time investigating what would be required. (I supported this in vty-ui previously so I'm familiar with the problem and its solution; I just haven't dedicated time to fixing this in brick.)

I'll take a look at this in the next few days.

Thanks!

[jtdaugherty]

I started to implement this and ran into a problem with Vty, so this will have to wait until Vty moves forward a bit (see jtdaugherty/vty#94).

[jtdaugherty]

This is now fixed and is released on Hackage in version 0.14.