Emoji rendering issue

[niklasravnsborg]

By accident, I found that using the keyboard emoji (⌨️) is causing some rendering glitches (see video) in Helix 24.3 on macOS. The letters shift backward unexpectedly, when the line is navigated to by cursor navigation

Screen.Recording.2024-04-22.at.09.32.31.mov

// i'm just moving along the line with `L`

👍 test 1
⌨️ test 2

[pascalkuthe]

Duplicate of #6012. The problem is less that helix is buggy and more that terminals can't agree on a shared definition of width for unicode graphemes.

As a workaround I plan to only render the first codepoint of multi codepoint graphemes