REGEXP_FILE
  RegExpPatternImpl: <a\Qabc?*+.))]][]\Eb>
    RegExpBranchImpl: <a\Qabc?*+.))]][]\Eb>
      RegExpCharImpl: <a>
        PsiElement(CHARACTER)('a')
      PsiWhiteSpace('\Q')
      RegExpCharImpl: <a>
        PsiElement(CHARACTER)('a')
      RegExpCharImpl: <b>
        PsiElement(CHARACTER)('b')
      RegExpCharImpl: <c>
        PsiElement(CHARACTER)('c')
      RegExpCharImpl: <?>
        PsiElement(CHARACTER)('?')
      RegExpCharImpl: <*>
        PsiElement(CHARACTER)('*')
      RegExpCharImpl: <+>
        PsiElement(CHARACTER)('+')
      RegExpCharImpl: <.>
        PsiElement(CHARACTER)('.')
      RegExpCharImpl: <)>
        PsiElement(CHARACTER)(')')
      RegExpCharImpl: <)>
        PsiElement(CHARACTER)(')')
      RegExpCharImpl: <]>
        PsiElement(CHARACTER)(']')
      RegExpCharImpl: <]>
        PsiElement(CHARACTER)(']')
      RegExpCharImpl: <[>
        PsiElement(CHARACTER)('[')
      RegExpCharImpl: <]>
        PsiElement(CHARACTER)(']')
      PsiWhiteSpace('\E')
      RegExpCharImpl: <b>
        PsiElement(CHARACTER)('b')