Add Ghostty support ; TERM=xterm-ghostty

[joshgoebel]

• PR Description

Adds Ghostty terminal support.

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What I did here:

• Added xterm_ghostly to models.txt and extended/extended.go
• Pulled in mkinfo from upstream
• Patched terminfo to include MouseMode
• Ran ./gen.sh

I added MouseMode but we could also remove that and I could remove it from mkinfo... open to guidance here. Lazygit is amazing and I'd love to help however I can to get this merged.

Testing

• Tested using delta inside lazygit. It's broken before this change (colors are off). After this change it's resolved (colors are perfect).

Broken:

Correct:

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• Please check if the PR fulfills these requirements

• N/A Cheatsheets are up-to-date (run go generate ./...)
• N/A Code has been formatted (see here)
• N/A Tests have been added/updated (see here for the integration test guide)
• N/A Text is internationalised (see here)
• N/A If a new UserConfig entry was added, make sure it can be hot-reloaded (see here)
• N/A Docs have been updated if necessary
• You've read through your own file changes for silly mistakes etc

[stefanhaller]

It looks like you modified the files under vendor/ directly. We can't do that. To add something to tcell, you need to make a PR in the tcell repo, and once it is merged we can then update our tcell dependency.

[joshgoebel]

How do you track which version of tcell you're pinned against? (there are a lot of releases since v2) Do you just want me to try to get this into lastest mainline and then you'd upgrade the whole dependency?

[stefanhaller]

How do you track which version of tcell you're pinned against?

This is recorded in the go.mod file (which is managed by the go dependency system). You can either pin a specific version (like we did with tcell) or just a given commit hash on main (like we do with gocui and some others).

[joshgoebel]

Thanks! Helpful. PR created upstream. gdamore/tcell#763 We'll see how it goes.