[66] pydot generates unwanted quotes on edge output

[prmtl]

Reported by bruno.st...@gmail.com, 2012-02-15T19:31:23Z

When generating edges with nodes name starting with a digit, unwanted quotes appear if src or dst includes a letter.
pydot.Edge("1111:1111","2222")
===> 1111:1111 -- 2222
but
pydot.Edge("1111:1111x","2222")
===> "1111:1111x" -- 2222

Since dot does not interpret properly port when quotes are present, this is bogus. See attached patch.
Originally assigned to ero.carr...@gmail.com
Attached pydot_fix_need_quotes.patch (view on Gist)
From: https://code.google.com/p/pydot/issues/detail?id=66

[prmtl]

Comment by ero.carr...@gmail.com, 2012-06-26T14:39:16Z

Assigned to ero.carr...@gmail.com