Regular Expressions with Epsilon Emulation

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.
Any single character.

[ ]
Any one of the characters contained in the brackets, or any of an ASCII range of characters separated by a hyphen (-). For example, b(aeiou)d matches bad, bed, bid, bod, and bud, and r(eo)+d matches red, rod, reed, and rood, but not reod or roed. For numbers, x(0-9) matches x0, x1, x2, and so on. If the first character in the brackets is a caret (^), then the regular expression matches any characters except those in the brackets.

^
The beginning of a line.

$
The end of a line.

( )
Indicates a tagged expression to retain for replacement purposes. If the expression in the Find What text box is (lpsz)BigPointer, and the expression in the Replace With box is #1NewPointer, all selected occurrences of lpszBigPointer are replaced with lpszNewPointer. Each occurrence of a tagged expression is numbered according to its order in the Find What text box, and its replacement expression is #n, where 1 corresponds to the first tagged expression, 2 to the second, and so on. You can have up to nine tagged expressions.

~Not the following character. For example, b~ad matches bbd, bcd, bdd, and so on, but not bad.

(c|c)Any one of the characters separated by the alternation symbol (|). For example, (j|u)+fruit finds jfruit, jjfruit, ufruit, ujfruit, uufruit, and so on.

*
None or more of the preceding characters or expressions. For example, ba*c matches bc, bac, baac, baaac, and so on.

+
At least one or more of the preceding characters or expressions. For example, ba+c matches bac, baac, and baaac, but not bc.

[^]
Any character except those following the caret (^) in the brackets, or any of an ASCII range of characters separated by a hyphen (-). For example, x[^0-9] matches xa, xb, xc, and so on, but not x0, x1, x2, and so on.

[a-zA-Z0-9]
Any single alphanumeric character.

[<tab>]+
Any white-space character.

[a-zA-Z]
Any single alphabetic character.

{0-9]
Any decimal digit.

[0-9a-fA-F]+
Any hexadecimal number.

([0-9]+.[0-9]*|[0-9]*.[0-9]+|[0-9]+)
Any unsigned number. For example,
([0-9]+.[0-9]*|[0-9]*.[0-9]+|[0-9]+) should match 123, .45, and 123.45.

[0-9]+
Any unsigned decimal integer.

[a-zA-Z_$][a-zA-Z0-9_$]*
C/C++ identifier.

[a-zA-Z]+
Any English word (that is, any string of alphabetic characters).

"[~"]*"
Any quoted string.

\
Removes the pattern match characteristic in the Find What text box from the special characters listed above. For example, 100$ matches 100 at the end of a line, but 100\$ matches the character string 100$ anywhere on a line.