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b87764ed94
Jison adds \b (word boundary) to literal string patterns by default. It does so, because it doesn't follow traditional match-longest approach, but does match-first instead. Without including word boundaries, it'd be hard to distinguish between a keyword and identifier. The pattern for `end` keyword is not a simple string literal - it swallows trailing whitespace, so we have to add \b manually. This partially fixes #184 - at least now `end` behaves the same as other keywords: it can be used as a prefix and infix, but not as a suffix. To solve this issue completely, ALPHA pattern would have to match multiple letters, which is a much bigger change.