An Introduction to Regular Expressions

The Substitution Operator

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Modifiers

Like the Matching operator, the Substitution operator can have various modifiers, some of which affect the interpretation of the regular expression inside.

The modifiers are:

e	Evaluate the REPLACEMENT expression.
g	Do global pattern matching.
i	Do case-insensitive pattern matching.
m	Treat the string as multiple lines.
o	The optimizer.
s	Treat the string as a single line.
x	Ignore whitespace within a pattern.

The modifiers /gimsx perform the same as for the match operator.

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