manual correction

[Ryanne Thomas Dolan <rtdmr6@...>]

Sorry if this was mentioned already, but the description under string.gsub is redundant.

If repl is a table, then the table is queried for every match, using the first capture as the key; if the pattern specifies no captures, then the whole match is used as the key.

If repl is a function, then this function is called every time a match occurs, with all captured substrings passed as arguments, in order; if the pattern specifies no captures, then the whole match is passed as a sole argument. If repl is a table, then this table is queried with the value of the first capture or of the whole match, if the pattern specifies no captures.