So, I'm curious on the opinions of both the devs and the users, what would make it worth upgrading, and what issues would be significant in doing so?
From what I can tell, these are the main features to be gained from 5.1-5.3:
- __len and __gc metamethods work on tables finally
- 5.3 includes basic UTF-8 support, which seems like it could drastically simplify Mudlet's unicode issues
- Bitwise operators without an external library
- Goto with ::labels::
- s:rep now supports adding a separator
- Environment modifications are simpler and no longer require the debug library (limited usage)
- ipairs and table functions respect metamethods instead of using raw get/set (-probably- not an incompatibility as well, but could be)
- The variable args is no longer defined in vararg functions
- loadstring has become load
- module has been deprecated (mostly affects included modules)
- Floats will display as 0.0 rather than just 0 (could be an issue for some tostring usages?)
http://www.lua.org/manual/5.2/readme.html#changes
http://www.lua.org/manual/5.2/manual.html#8
http://www.lua.org/manual/5.3/readme.html#changes
http://www.lua.org/manual/5.3/manual.html#8