brick/FAQ.md
2022-09-21 17:40:54 +02:00

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brick FAQ
=========
* Q: Why doesn't brick get my Ctrl-arrow key events?
* A: Your terminal emulator probably isn't sending the expected
sequences. For example, OS X's Terminal.app does not do this by
default and requires configuration to make it work. See also:
http://unix.stackexchange.com/questions/110022/how-do-i-find-out-the-keycodes-for-ctrlup-and-down-arrow-for-term-screen
* Q: Why do some emojis mess up the layout?
* A: For wide characters to be displayed correctly, [vty]'s
determination of the character width and the user's
terminal emulator's determination of the character width
must match. Unfortunately, every terminal emulator
calculates this differently, and none correctly follow
the Unicode standard.
The issue is further complicated by Unicode combining
characters and releases of new versions of the Unicode
standard.
As a result, the current recommendation is to avoid
use of wide characters due to these issues.
If you still must use them, you can read [vty]'s
documentation for options that will affect character
width calculations.
[vty]: https://hackage.haskell.org/package/vty