Regular expressions 5. Special control characters
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Special control characters in a regular expression specify characters that are difficult to type.
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\a alert (bell).
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\b backspace.
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\e ASCII escape character.
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\f form feed (new page).
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\n newline.
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\r carriage return.
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Example : a search for "\r\n" followed by a replace "\r" changes Windows text files to Macintosh text files.
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Example : a search for "\r" followed by a replace "\n" changes Macintosh text files to Unix text files.
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Example : a search for "\r\n" followed by a replace "\n" changes Windows text files to Unix text files.
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\t horizontal tab.
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\v vertical tab.
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