Search results overflow into search input field on some terminals when text contains emojis

[ibhagwan]

• [x] I have read through the manual page (man fzf)
• [x] I have the latest version of fzf
• [x] I have searched through the existing issues

Info

• OS
  • [x] Linux
  • [ ] Mac OS X
  • [ ] Windows
  • [ ] Etc.
• Shell
  • [ ] bash
  • [x] zsh
  • [ ] fish

Problem / Steps to reproduce

First discovered in: https://github.com/ibhagwan/fzf-lua/issues/275 and reproduced with the latest version of fzf 0.29.0 (dc975e8).

Copying some of the links from this comment by @akrifari for convinience.

Best explained by watching the recordings below, when the text contains emojis while using alacritty/neovim term the search results overflow the input field:

• fzf run inside alacritty
• fzf run inside neovim as part of fzf-lua

Note that this does work in a kitty terminal (in the shell, not inside neovim):

• fzf run inside kitty

But given this also happens in alacritty outside the scope of the fzf-lua plugin I'm guessing this is either a terminal issue^1 or fzf issue, would love to hear your opinion if this can be mitigrated at the fzf level?

Text with emojis used in the recording

```markdown Sit quos enim architecto nobis quas. Sequi dicta aut totam debitis neque ipsa! Est corrupti ea dolorum molestias ea Totam magni magnam maxime optio incidunt? Ipsum sapiente recusandae animi voluptatem Sit quos enim architecto nobis quas. Sequi dicta aut totam debitis neque ipsa! Est corrupti ea dolorum molestias ea Totam magni magnam maxime optio incidunt? Ipsum sapiente recusandae animi voluptatem 👧🏼 Sit quos enimo architecto nobis quas. Sequi dicta aut totam debitis neque ipsa! Est corrupti ea dolorum molestias ea Totam magni magnam maxime optio incidunt? Ipsum sapiente recusandae animi voluptatem Sit quos enim architecto nobis quas. Sequi dicta aut totam debitis neque ipsa! Est corrupti ea dolorum molestias ea Totam magni magnam maxime optio incidunt? Ipsum sapiente recusandae animi voluptatem Sit quos enim architecto nobis quas. Sequi dicta aut totam debitis neque ipsa! Est corrupti ea dolorum molestias ea Totam magni magnam maxime optio incidunt? Ipsum sapiente recusandae animi voluptatem 👧🏼 Sit quos enimo architecto nobis quas. Sequi dicta aut totam debitis neque ipsa! Est corrupti ea dolorum molestias ea Totam magni magnam maxime optio incidunt? Ipsum sapiente recusandae animi voluptatem ```

[junegunn]

Looks like the emoji modifier is not properly handled, taking up extra space which is causing the overflow you see.

echo 👧🏼 should only take up 2 columns