How to string.find the square bracket character in lua?

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暗喜
暗喜 2021-02-14 11:57

So I\'m trying to find square brackets inside a string:

s = \"testing [something] something else\"
x,y = string.find(s,\"[\")

which gives me an

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  • 2021-02-14 12:06

    John's answer will work -- turning off pattern matching.

    What you're trying to do -- escape the [ -- is done with the % character in Lua:

     x,y = string.find(s,'%[')
    

    Also strings in Lua all have the string module as their metatable, so you could just say:

     x,y = s:find('%[')
    

    or even:

     x,y = s:find'%['
    
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  • 2021-02-14 12:25

    Use the fourth argument to string.find, which turns off pattern-matching.

    x, y = string.find(s, "[", nil, true)
    
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