Variable: tab-bar-auto-width-min
tab-bar-auto-width-min is a variable defined in tab-bar.el.gz.
Value
((20) 2)
Documentation
Minimum width of tabs for automatic resizing under tab-bar-auto-width(var)/tab-bar-auto-width(fun).
The value should be a list of two numbers, giving the minimum width as the number of pixels for GUI frames and the number of characters for text-mode frames. Tabs whose width is smaller than this will not be narrowed.
The first value may also be a list, as in tab-bar-auto-width-max,
which see.
It's not recommended to change this value since with larger values, the tab bar might wrap to the second line when it shouldn't.
Source Code
;; Defined in /usr/src/emacs/lisp/tab-bar.el.gz
(defvar tab-bar-auto-width-min '((20) 2)
"Minimum width of tabs for automatic resizing under `tab-bar-auto-width'.
The value should be a list of two numbers, giving the minimum width
as the number of pixels for GUI frames and the number of characters
for text-mode frames. Tabs whose width is smaller than this will not
be narrowed.
The first value may also be a list, as in `tab-bar-auto-width-max',
which see.
It's not recommended to change this value since with larger values, the
tab bar might wrap to the second line when it shouldn't.")