Some languages have built-in support for writing grammars (parsers, lexers). In many cases, it encourages engineers to write re-usable pieces of code instead o

Some languages have built-in support for writing grammars (parsers, lexers). In many cases, it encourages engineers to write re-usable pieces of code instead of one-off and hard to read regular expressions. Too bad that's not the case in Go. Given that, I would pick a parsec library over a yacc/lex setup. Parsecs are much easier to reason about.