Iconv and Recode
Charset conversion library. Supports utf-8, all russian charsets and all other that knows your own *nix.
Now newlispdoc compatible: http://en.feautec.pp.ru/store/libs/doc/index.html
Context ICONV: newLisp Interface to stdlib iconv() function and implementation of recode technique.
About iconv see man 3 iconv
Known working with Linux.
Source: http://en.feautec.pp.ru/store/libs/iconv.lsp
Example