20 Searching and Replacement
Like other editors, Emacs has commands for searching for occurrences of
a string. The principal search command is unusual in that it is
incremental; it begins to search before you have finished typing the
search string. There are also nonincremental search commands more like
those of other editors.
Besides the usual
replace-string command that finds all
occurrences of one string and replaces them with another, Emacs has a
more flexible replacement command called
asks interactively which occurrences to replace.