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

[Juri Linkov]

> | +(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.

Hmm, I don't see what is wrong.