Let clojure-ts-mode derive from clojure-mode for Emacs 30+

[daanturo]

Emacs 30 defines the function derived-mode-add-parents that is used for the built-in *-ts-mode, this will make (provided-mode-derived-p 'clojure-ts-mode 'clojure-mode) return true just like other treesit major modes.

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[bbatsov]

I'd suggest adding a comment here explaining this, given that this API is fairly new and unknown.

[daanturo]

Thank you, I've done.

[bbatsov]

Seems this change broke the CI's lint check. Please, take a look at the build failure when you can.

[sogaiu]

Is this part of the problem?

[26:06.983]  Debugger entered--Lisp error: (bad-signature "buttercup-1.36.tar.sig")
               signal(bad-signature ("buttercup-1.36.tar.sig"))

[bbatsov]

I don't think so. Most like we're not running the lint job on Emacs 30, and this results in:

In end of data:
clojure-ts-mode.el:971:18: Warning: the function ‘derived-mode-add-parents’ is not known to be defined.
Indenting region... 
Indenting region...done
clojure-ts-mode.el:971:18 (byte-compile) Warning: the function ‘derived-mode-add-parents’ is not known to be defined.

[bbatsov]

Although I thought that the use of fboundp would be enough to make this pass on any Emacs version. Perhaps using boundp instead would solve this?

[daanturo]

For some reasons removing the # in the fboundp check makes the linting complaint go away: daanturo@3014b15.

I tested locally with EMACS=emacs-29.4 eldev lint.

[bbatsov]

Yeah, it seems this has to be a regular symbol. I'll apply the fix now.