bug#57848: 29.0.50; Problems with private tab-line-tab-name-function

[Michael Heerdegen]

Juri Linkov <juri@linkov.net> writes:

> Now this is fixed by using the same solution as used in
> `Info-set-mode-line' to escape %-constructs.

Thanks.

| +(defvar tab-line-cache-key-function #'tab-line-cache-key-default
| +  "Function that adds more cache keys.
| +It has one argument with a list of tabs, and returns a list of cache keys.
| +You can use `add-function' to add more cache keys.")

There is something wrong with the second sentence of the doc string.

> Now a new function variable `tab-line-cache-key-function' is pushed,
> so you can add more cache keys with something like this:
>
> #+begin_src emacs-lisp
> (add-hook 'Info-mode-hook
>           (defun my-setup-tab-line-for-Info-mode ()
>           (add-function :filter-return (local 'tab-line-cache-key-function)
>                         (lambda (cache-keys)
>                           (cons mode-line-buffer-identification cache-keys)))
>             (tab-line-mode +1)
>             (setq-local
>              tab-line-tab-name-function
>              (lambda (b &optional _bs)
>              [...]
> #+end_src
>
> Then visiting even such nodes as (info "(elisp) %-Constructs")
> doesn't have anymore the problem that you found above.

Very cool, thanks.  I'll try it out a bit and report back.

Michael.