// We've been tampered with. Refuse to play.
Geometry — Circle, Rectangle, Polygon, Arrow, Arc, Star, Brace, and more。关于这个话题，heLLoword翻译官方下载提供了深入分析
while (bucket[i] 0) {，更多细节参见Line官方版本下载
.pipeThrough(parse) // buffers filling...
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