HXML file format is underspecified.

On the HXML page (hhttp://haxe.org/manual/compiler-usage-hxml.html), it does not discuss whether the options/directives in an HXML file can all be placed on a single line, or whether each option *must* be on a separate line. (And, in practice, it appears that no-argument options can be placed on a single line, but multi-argument options cannot.

This needs to be specified, one way or another, so that tools can parse or format them properly.

Read the HXML page at haxe.org/manual/compiler-usage-hxml.html and verify how no-argument and multi-argument options behave when placed on one line. Update the page to specify whether directives may share a line or must be separated, including the observed distinction, so tools can parse and format HXML consistently.

Written by the indexing model from the issue text.