Variable: eldoc-argument-case
eldoc-argument-case is a customizable variable defined in eldoc.el.gz.
This variable is obsolete since 25.1.
Value
identity
Documentation
Case to display argument names of functions, as a symbol.
This has two preferred values: upcase or downcase.
Actually, any name of a function which takes a string as an argument and
returns another string is acceptable.
Note that this variable has no effect, unless
eldoc-documentation-strategy handles it explicitly.
Source Code
;; Defined in /usr/src/emacs/lisp/emacs-lisp/eldoc.el.gz
(defcustom eldoc-argument-case #'identity
"Case to display argument names of functions, as a symbol.
This has two preferred values: `upcase' or `downcase'.
Actually, any name of a function which takes a string as an argument and
returns another string is acceptable.
Note that this variable has no effect, unless
`eldoc-documentation-strategy' handles it explicitly."
:type '(radio (function-item upcase)
(function-item downcase)
function))