SHELL_SCRIPT
  COMMANDS_LIST
    GENERIC_COMMAND_DIRECTIVE
      PsiElement($)('$')
      SHELL_PARAMETER_EXPANSION
        PsiElement({)('{')
        PsiElement(word)('myvar')
        PsiElement(param_separator)('/')
        PsiElement(word)(',')
        PsiElement(param_separator)('/')
        PsiElement(word)(' ')
        PsiElement(})('}')