Variable: tab-bar-auto-width-functions
tab-bar-auto-width-functions is a variable defined in tab-bar.el.gz.
Value
(tab-bar-auto-width-predicate-default)
Documentation
List of functions for tab-bar-auto-width(var)/tab-bar-auto-width(fun) to call with a tab ITEM.
If any of these functions returns non-nil for a given tab ITEM, that tab's width will be auto-sized.
Probably introduced at or before Emacs version 31.1.
Source Code
;; Defined in /usr/src/emacs/lisp/tab-bar.el.gz
(defvar tab-bar-auto-width-functions '(tab-bar-auto-width-predicate-default)
"List of functions for `tab-bar-auto-width' to call with a tab ITEM.
If any of these functions returns non-nil for a given tab ITEM, that
tab's width will be auto-sized.")