tostring should be named _TOSTRING,
package.preload should be named package._PRELOAD, package.loaded
-> package._LOADED, etc...|
Wait uhh... maybe not the package tables as Lua doesn't use the package table to look them up... but definetly _TOSTRING as print() uses it.
For real tho, what's the rationale behind not calling it _TOSTRING? (also for metamethods - why not _EQ, _NE, _INDEX, _NEWINDEX etc?)
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