Character | Descriptions |
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$n | The text of capture group n will be substituted for $n. n must be >= 0 and not greater than the number of capture groups. A $ not followed by a digit has no special meaning, and will appear in the substitution text as itself, a $. |
\ | Treat the following character as a literal, suppressing any special meaning. Backslash escaping in substitution text is only required for '$' and '\', but may be used on any other character without bad effects. |
Regular Expression Metacharacters
Regular Expression Operators
Regular Expression Flag Options