Variable: executable-prefix-env
executable-prefix-env is a customizable variable defined in
executable.el.gz.
Value
nil
Documentation
If non-nil, use "/usr/bin/env" in interpreter magic number.
If this variable is non-nil, the interpreter magic number inserted
by executable-set-magic will be "#!/usr/bin/env INTERPRETER",
otherwise it will be "#!/path/to/INTERPRETER".
This variable was added, or its default value changed, in Emacs 26.1.
Probably introduced at or before Emacs version 26.1.
Source Code
;; Defined in /usr/src/emacs/lisp/progmodes/executable.el.gz
(defcustom executable-prefix-env nil
"If non-nil, use \"/usr/bin/env\" in interpreter magic number.
If this variable is non-nil, the interpreter magic number inserted
by `executable-set-magic' will be \"#!/usr/bin/env INTERPRETER\",
otherwise it will be \"#!/path/to/INTERPRETER\"."
:version "26.1"
:type 'boolean)