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l3doc-TUB class triggers pipe and double quote verb delimiter
================================================================================
\documentclass{l3doc-TUB}
|foo|
"bar"
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(document
  (use
    (cs)
    (group (l) (name) (r)))
  (short_verb (verb_delim) (verbatim) (verb_delim))
  (short_verb (verb_delim) (verbatim) (verb_delim)))