> "I can't shake the feeling that Regexp could be written just as efficiently as a fluent interface with a more human friendly syntax."

You may be interested in the Parse dialect of Red:

http://www.red-lang.org/2013/11/041-introducing-parse.html

Also worth noting that Red can be embedded in any program that supports a C function interface, through using LibRed.

http://www.red-lang.org/2017/03/062-libred-and-macros.html?m...