File

net.server_epoll: Avoid concatenating buffer with single item Saves creating a string that'll be identical to buffer[1] anyways, as well as a C function call. Depending on Lua version and length of the string, this could be reusing an interned string, but a longer one would probably be duplicated for no reason. Having exactly one item in the buffer seems like it would be fairly common, but I have not done an extensive study. If opportunistic writes are enabled then it will be even more likely. This special case could be optimized like this in table.concat but it does not look like it is.

Welcome hackers!

This project accepts and *encourages* contributions. If you would like to get 
involved you can join us on our mailing list and discussion rooms. More 
information on these at https://prosody.im/discuss

Patches are welcome, though before sending we would appreciate if you read 
docs/coding_style.md for guidelines on how to format your code, and other tips.

Documentation for developers can be found at https://prosody.im/doc/developers

Have fun :)