7.2 - Changes in the Libraries
Function string.gfind was renamed string.gmatch.
When string.gsub is called with a function as its
whenever this function returns nil or false the
replacement string is the whole match,
instead of the empty string.
Function table.setn was deprecated.
Function table.getn corresponds
to the new length operator (#);
use the operator instead of the function.
Function loadlib was renamed package.loadlib.
Function math.mod was renamed math.fmod.
Functions table.foreach and table.foreachi are deprecated.
You can use a for loop with pairs or ipairs instead.
There were substantial changes in function require due to
the new module system.
However, the new behavior is mostly compatible with the old,
but require gets the path from package.path instead
of from LUA_PATH.
Function collectgarbage has different arguments.
Function gcinfo is deprecated;
use collectgarbage("count") instead.