Syntax highlighting fails after split /\|/

[wangliang1989]

Syntax highlighting fails after split /|/:
if the split is 'split /\s/', the syntax is right.
but, when I have used 'split /|/' in line 20 ,syntax fail.(English is not my first language)

[Fank]

It's a known issue, and its not easy to fix this.
As a workaround add an "m" before the regex, this should fix it.

[wangliang1989]

successed, Thanks(English is not my first language)