Round-trip parsing of data structure format (YAML or whatnot) preserving comments, for writing configuration

Question

I have been using YAML as configuration file format in several applications, and all went well except one thing: when my program needs to write/modify a config variable in a YAM

Answer 1

Yeah, you and everyone who thought wow, yaml sounds cool, simply put, it doesn't exist, yet

update: you probably want to use Config::General, its apache config format (xmlish)

No, PPI is not general purpose tool, if you want BNF-ness, you want to use Marpa

Of all INI/JSON/YAML/XML, XML probably has the best editor support for non-programmers (sounds crazy)