tree 7dced733d2e01a6060d656afad903539ac2fedc9
parent 6188f3a654c0380db08eb40a5465ce8e71c784f5
author Roberto Ierusalimschy <roberto@inf.puc-rio.br> 1609248182 -0300
committer Roberto Ierusalimschy <roberto@inf.puc-rio.br> 1609248182 -0300

No need to recheck close method before calling it

A to-be-closed variable is constant and it must have a close metamethod
when it is created. A program has to go out of its way (e.g., by
changing the variable's metamethod) to invalidate that check. So,
it is not worth to test that again. If the program tampers with the
metamethod, Lua will raise a regular error when attempting to call it.