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2016-09-30 20:52 GMT+02:00 Egor Skriptunoff <>:
> "s:sub(k,0)" and "s:sub(0,k)" are always empty strings for any s and k
> Zero index always "kills" the substring.
> This property is quite understandable for beginners, descriptive and
> memorable.

It always saddens me when an experienced member of the list
gets carried away with an intellectually beautiful idea that

(a) would break existing programs in a hard-to-debug way;
(b) has no chance of actually making it into official Lua.

Of course, it saddens me most when that person is myself :-)