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### 15.8 Regular Expression Example

Here is an example of a regexp—similar to the regexp that Emacs uses, by default, to recognize the end of a sentence, not including the following space (i.e., the variable `sentence-end-base`):

    [.?!][]\"')}]*

This contains two parts in succession: a character set matching period, ‘`?`’, or ‘`!`’, and a character set matching close-brackets, quotes, or parentheses, repeated zero or more times.