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| operator | pattern | ||||
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Syntax
pattern
An optional variable herald used with pattern variables. Once a pattern variable has been declared, pattern behaves and is used much the same way as the shelf-types counter, stream and switch.
pattern is not optional when it is used with the built-in pattern variables:
class
message
additional-info
recovery-info
file-name
line-number
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Related Concepts Declaration-free programs Pattern variables and local scopes XML/SGML error rules: predefined pattern variables |
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