Returns a pattern that matches a range of characters
Returns a pattern that matches any single character belonging to one of the given ranges. Each range is a string xy of length 2, representing all characters with code between the codes of x and y (both inclusive).
See Also ...
lpeg.B - Matches patt n characters behind the current position, consuming no input
Lua bc (big number) functions
(Help topic: lua=lpeg.R)
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