id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
11330	add validator warning for short keys	Klumbumbus	team	"follow up from #11234

we should warn about keys with 1 or 2 characters as these are mostly typos, except `to` (used in route relations).

I think we should not allow `id`, since this is not documented in the wiki and mostly part of local imports or should be `ref` instead.

the 2 following mapcss syntaxes do not work however:

{{{
#!mapcss
*[/.{1,2}/] {
  throwWarning: tr(""uncommon short key"");
}
}}}

{{{
#!mapcss
*[/.?.?/] {
  throwWarning: tr(""uncommon short key"");
}
}}}

"	enhancement	closed	normal	15.04	Core validator		fixed		bastiK