Further C++ operators for position

[Matthew Fernandez]

Hello Bison folk,

I recently had a use case for comparing source positions coming out of a C++ 
Bison-produced parser. While operator== and operator!= are implemented on the 
position class [0], the ordering operators (<, <=, >, >=) are not. It was 
relatively straightforward to implement these myself, but I was wondering if 
these were of wider use and should live upstream in Bison’s position 
implementation. Perhaps there is some history behind this or some deliberate 
omission of these operators? Just wanted to ask if there’s a reason these don’t 
already exist before thinking about posting a patch. I’m not subscribed to the 
list, so please CC me in replies.

Thanks,
Matthew

  [0]: 
https://www.gnu.org/software/bison/manual/html_node/C_002b_002b-position.html#index-operator_003d_003d-on-position