Using letter-spacing globally messes up selecting.

[Linux123123]

letter-spacing other then normal messes up with console text selecting.

Details

• Browser and browser version: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.0.0 Safari/537.36
• OS version: n/a
• xterm.js version: latest

Steps to reproduce

1. Set letter spacing in body to anything other then normal (for example letter-spacing: 0.015em;)
2. Observe selecting messing up

Usually can get detected by trying to select from the end, or starting select on a space.

[jerch]

I cannot repro with master. Can you give a bit more information or a small screen cast showing the misbehavior?

[Linux123123]

A simple reproduction
https://codesandbox.io/p/sandbox/currying-dream-mk2ctn

[Tyriar]

Can repro some weirdness in normal selection and when holding alt:

Didn't check if it happens on tip of master though

[Linux123123]

I can confirm that it still happens on "@xterm/xterm": "5.4.0-beta.14", which is like 5 days old.

[jerch]

Yeah can repro it with your example on FF and chrome. On a sidenote - the wrong doubled highlighting starts at half of the correct position, and letter-spacing is at 0.5em, hmm.