15 lines
223 B
Racket
15 lines
223 B
Racket
#lang scheme/signature
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empty-header
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validate-header
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extract-field
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remove-field
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insert-field
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replace-field
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extract-all-fields
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append-headers
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standard-message-header
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data-lines->data
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extract-addresses
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assemble-address-field
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