Search and replace any regular expression match literally with
the eight characters
|Replacement text flavor: Java|
|Replacement text flavor: PHP|
|Replacement text flavor: Perl|
|Replacement text flavors: Python, Ruby|
This recipe shows you the different escape rules used by the various replacement text flavors. The only two characters you may ever need to escape in the replacement text are the dollar sign and the backslash. The escape characters are also the dollar sign and the backslash.
The percentage sign and asterisk in this example are always
literal characters, though a preceding backslash may be treated as
an escape instead of a literal backslash. «
$1» and/or «
\1» are a backreference to a
capturing group. Recipe 2.21 tells
you which flavors use which syntax for backreferences.
The fact that this problem has five different solutions for seven replacement text flavors demonstrates that there really is no standard for replacement text syntax.
A lone dollar sign is a literal character. Dollar signs need to be escaped only when they are followed by a digit, ampersand, backtick, straight ...