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    • Gustav Larsson's avatar
      Fixes syntax error in older versions of graphviz. · 13686776
      Gustav Larsson authored
      Older versions of graphviz (tested on version 2.26.3 (20100126.1600))
      complains when an attribute is empty without quotes. [label=] fails but
      [label=""] works, so the quote_if_necessary function has been updated to
      accommodate this.
      13686776
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