Variable: speedbar-window-max-width
speedbar-window-max-width is a customizable variable defined in
speedbar.el.gz.
Value
40
Documentation
The maximum allowed width in characters of the speedbar-window.
The speedbar-window width can exceed the value defined here, however
if the window is closed and then reopened, this will be the width of the
speedbar-window.
This variable was added, or its default value changed, in Emacs 31.1.
Probably introduced at or before Emacs version 31.1.
Source Code
;; Defined in /usr/src/emacs/lisp/speedbar.el.gz
(defcustom speedbar-window-max-width 40
"The maximum allowed width in characters of the `speedbar-window'.
The `speedbar-window' width can exceed the value defined here, however
if the window is closed and then reopened, this will be the width of the
`speedbar-window'."
:type 'integer
:group 'speedbar
:version "31.1")