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 query-replace, which asks interactively which occurrences to replace.

• Incremental Search: Search happens as you type the string.
• Nonincremental Search: Specify entire string and then search.
• Word Search: Search for sequence of words.
• Regexp Search: Search for match for a regexp.
• Regexps: Syntax of regular expressions.
• Search Case: To ignore case while searching, or not.
• Replace: Search, and replace some or all matches.
• Other Repeating Search: Operating on all matches for some regexp.

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