Feature: Line Comments

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A Line Comment is a sequence of characters starting with # and ending with \n (or the end of the pattern) that is ignored by pattern matching and can be used to document a pattern.

Syntax

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NOTE: The following syntax is an example based on some of the supported engines. For specific engine support, see Engines.

• #…\n — The rest of the line starting from # is removed from the pattern. Only supported when the x (extended mode) RegExp flag is set.

Engines

Engine	Supported
Perl	✔
PCRE	✔
Boost.Regex	❌
.NET	✔
Oniguruma	❌
Hyperscan	❌
ICU	✔
Glib/GRegex	✔
ECMAScript	❌

See Also

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