Raku highlighting

class X::Obsolete does X::Comp { }

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Syntax error thrown when the user is attempting to use constructs from other languages.

For example

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m/abc/i

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dies with

text

===SORRY!===
Unsupported use of /i; in Raku please use :i

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Methods §

method old §

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method old(--> Str:D)

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Returns a textual description of the obsolete syntax construct

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method replacement(--> Str:D)

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Describes what to use instead of the obsolete syntax.

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method when(--> Str:D)

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Returns a string describing the state of the language (usually " in Raku").