12.2 Non-Incremental Search
Emacs also has conventional non-incremental search commands, which
require you type the entire search string before searching begins.
`C-s <RET> STRING <RET>'
Search for STRING.
`C-r <RET> STRING <RET>'
Search backward for STRING.
To do a non-incremental search, first type `C-s <RET>' (or `C-s
C-m'). This enters the minibuffer to read the search string.
Terminate the string with <RET> to start the search. If the string is
not found, the search command gets an error.
By default, `C-s' invokes incremental search, but if you give it an
empty argument, which would otherwise be useless, it invokes
non-incremental search. Therefore, `C-s <RET>' invokes non-incremental
search. `C-r <RET>' also works this way.
Forward and backward non-incremental searches are implemented by the
commands `search-forward' and `search-backward'. You can bind these
commands to keys. The reason that incremental search is programmed to
invoke them as well is that `C-s <RET>' is the traditional sequence of
characters used in Emacs to invoke non-incremental search.
Non-incremental searches performed using `C-s <RET>' do not call
`search-forward' right away. They first check if the next character is
`C-w', which requests a word search. Note: Word Search.
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