scribble-lexer doesn't recognize | delimiter after unquote

[LiberalArtist]

This is a valid program:

#lang at-exp racket

'@{They sank like lead in the @i{mi@,|____|-ghty }@b{wa}@i{-ters:}}

However, the lexers from syntax-color/scribble-lexer incorrectly color |____|-ghty as an error token, like this:

[LiberalArtist]

Here's a screenshot with a bit more context, since I'm now seeing more error tokens in proximity to this one. The example is in an _-exp-based language, so ƒ is like @.