Shortened names and adjusted style.
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@@ -12,10 +12,10 @@
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.export _isalnum
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.include "ctype.inc"
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.import ctype_preprocessor
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.import ctypemask
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_isalnum:
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jsr ctype_preprocessor ; (always clears X)
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jsr ctypemask ; (always clears X)
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bcs @L1 ; out of range? (everything already clear -> false)
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and #CT_ALNUM ; mask character/digit bits
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@L1: rts
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