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Argument is missing in '\' escape sequence.

Visual Studio 2008

This error generally occurs during search or replace when regular expressions or wildcards are used in a search string. This error can be caused by a single backslash (\) at the end of a pattern or by \x or \u entered without a valid hexadecimal Unicode character.

To correct this error

  1. To search using the regular expression escape character, enter \.

  2. To search for a Unicode character, enter \x or \u followed by a valid Unicode value.

  3. To search for the literal backslash, use \\.

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