eldoc error: (void-function eldoc-documentation-compose)

[tsilvap]

I'm getting this error if I open e.g. a Python file.

This function is defined in elpa-27.1/eldoc-1.11.1/eldoc.el, but if I try to search for it with C-h f it doesn't show up. Even if I evaluate (require-package 'eldoc), it still doesn't work. However, if I go to the eldoc.el file and evaluate the entire file, it works and the problem goes away.

I'm not really sure what is the right way to fix this.

[Eason0210]

Maybe you can try to update to Emacs 28.1, which is the latest stable release version.

eldoc-documentation-compose is a new function introduced at Emacs 28: emacs-mirror/emacs@c0fcbd2

[tsilvap]

I see, that worked for me. Thank you @Eason0210

[purcell]

Ah, good call, I should make sure this still works in older emacsen.