Parser checks quotes in command substitution comments

[OwenAR]

Is this a bug in the parser, such that it sees unbalanced quotes within a comment (within this context (command substitution?) as an error, or..?

This works:

	echo (
	test ""
	and echo a # comment 1 ''
	or  echo b # comment 2 ''
	)

But this gets an error:

	echo (
	test ""
	and echo a # comment 1 '''
	or  echo b # comment 2 ''
	)

	fish: Unexpected end of string, quotes are not balanced
	and echo a # '
	             ^

(fish, version 2.7.1 (ppa 3.2.1-1~focal))

(
Also work:

	echo (
	test ""
	and echo a # comment 1 '''
	or  echo b # comment 2 '''
	)

	echo (
	test ""
	and echo a # comment 1 '
	or  echo b # comment 2 '
	)

and of course:

	echo (
	test ""
	and echo a # comment 1
	or  echo b # comment 2
	)

...

a few other notes:

✔️ works:

	echo (
	test ""
	and echo a # comment 1 '
	or  echo b # comment 2
	#'
	)

❌ fails:

	echo (
	test ""
	and echo a # comment 1 '
	or  echo b # comment 2
	) #'

❌ fails:

	echo (
	test ""
	and echo a # comment 1 '
	or  echo b # comment 2
	)
	#'

✔️ works:

	echo ( #'
	test ""
	and echo a # comment 1 '
	or  echo b # comment 2
	)

)

[faho]

Yup, that's a bug.

I took the liberty of retitling this because we do prefer the title to fit into a text message (it was 141 characters).

[OwenAR]

(Yeah of course retitle, thanks! I just went with erring on the side of overly descriptive to start cuz I didn't know the right terms for things.)