define: DUK_USE_REGEXP_CANON_BITMAP
introduced: 2.2.0
default: true
tags:
  - performance
  - unicode
description: >
  Use a small lookup table (footprint impact is ~300-400 bytes) to speed up
  case insensitive RegExp canonicalization.  The result is still much slower
  than with DUK_USE_REGEXP_CANON_WORKAROUND but ~50x faster than without the
  lookup.