For gmatch, the an initial "^" is not magic.

[pygy]

for m in strung.gmatch("a", "^a") do 
    print(m)
end

... should not print anything.

for m in strung.gmatch("^a", "^a") do 
    print(m)
end

... should print "^a".

Currently, they print "a" and nothing, respectively.

[CapsAdmin]

If you don't use round brackets it defaults to (^a) and not ^(a)? This seems like odd behavior on Lua's part.

[pygy]

Actually, the initial "^" isn't treated as a metacharacter...

[pygy]

Fixed :-)