from,to = ngx.re.find(payload, [=[\/\*\!?|\/\/|#]=], 'ijo')
请问下表达式中开头和和结尾分别用[=，=]包起的来的作用是啥，没查到解释？
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This topic created in 2032 days ago, the information mentioned may be changed or developed.
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xycc Nov 17, 2020
https://www.lua.org/manual/5.3/manual.html#3.1 raw string 不用转义了
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