shell syntax highlighting fails with quote character in herestring

[dicktyr]

works as expected without quotes

hs <<< sss
	abc
sss

but it fails if heredoc contains an odd number
of unescaped quotes (single or double)

hs <<< sss
	ab'c
sss

[JoeKar]

What you're referring to is a heredoc instead of a here string, right?
And indeed #2953 didn't add support for a space in between of << and e.g. EOF.

[dicktyr]

corrected, thank you