Variable: minibuffer-history-case-insensitive-variables
minibuffer-history-case-insensitive-variables is a customizable
variable defined in simple.el.gz.
Value
nil
Documentation
Minibuffer history variables for which matching should ignore case.
If a history variable is a member of this list, then the
M-x previous-matching-history-element (previous-matching-history-element) and M-x next-matching-history-element (next-matching-history-element) commands ignore case when searching it,
regardless of case-fold-search.
Source Code
;; Defined in /usr/src/emacs/lisp/simple.el.gz
(defcustom minibuffer-history-case-insensitive-variables nil
"Minibuffer history variables for which matching should ignore case.
If a history variable is a member of this list, then the
\\[previous-matching-history-element] and \\[next-matching-history-element]\
commands ignore case when searching it,
regardless of `case-fold-search'."
:type '(repeat variable)
:group 'minibuffer)