AltME groups: search

actually,  path! also has a few quirks, like allowing parens and 
the use of a  get-set-word at the end

no, afaik,  just paren!, word and its own additional format quirks. 
    as the global block definition expacts, so too will parens, and 
thus the path.

I bet you didn't know tags where usable directly  ?  not many think 
about it, but since tags are strings, they make a lot of sense for 
representing XML tree structures... and indeed, I used them when 
I had namespaced tags.

Trolololol :)))))

time-syntax: [
[
	and [#":" digit]		; :##  
	| sign			; +:, -:
	| opt sign some digit   : +-##:
]
1 2 [
	#":" not #"." [
		opt #"+" any digit #"." any digit not #":"	; :+##.##
		| #"-." any digit not #":"				; :-.##:
		| opt #"+" some digit				; :+##:
		| #"+"						; :+:
		| #"-" any #"0"					; :-00:,  :-:
	]
] termination
]

time-syntax: [
[
	and [#":" digit]		; :##  
	| sign				; +:, -:
	| opt sign some digit   : +-##:
]
1 2 [
	#":" not #"." [
		opt #"+" any digit #"." any digit not #":"	; :+##.##
		| #"-" any #"0" #"." any digit not #":"		; :-00.##:
		| opt #"+" some digit				; :+##:
		| #"+"							; :+:
		| #"-" any #"0"					; :-00:,  :-:
	]
] termination
]

(Ah, and no "advanced" parse constructs. Trying to stay PEG compatible.)