Generally, search commands in Emacs by default perform character
folding, thus matching equivalent character sequences. You can
disable this behavior by customizing the variable
-@code{search-default-regexp-mode} to @code{nil}. @xref{Search
+@code{search-default-mode} to @code{nil}. @xref{Search
Customizations}. Within an incremental search, typing @kbd{M-s '}
(@code{isearch-toggle-character-fold}) toggles character folding, but
only for that search. (Replace commands have a different default,
@cindex default search mode
@cindex search mode, default
The default search mode for the incremental search is specified by
-the variable @code{search-default-regexp-mode}. It can be @code{nil},
+the variable @code{search-default-mode}. It can be @code{nil},
@code{t}, or a function. If it is @code{nil}, the default mode is to
do literal searches without character folding, but with case folding
and lax-whitespace matches as determined by @code{case-fold-search}