Quoted string in Graphiz output too long

[HansH]

Since we're dealing wit templates, we can have pretty long typenames. For me this results in the following error when invoking dot:

syntax error in line 33728 scanning a quoted string (missing endquote? longer than 16384?)

On the mentioned line there is indeed a label which contains a long typename, causing the string to be longer than 16384 characters.

Maybe truncate long typenames? It's not ideal, but better than something that doesn't work at all

[frabert]

It seems that the conversion utility is actually truncating output files, you can observe this by generating an xml file and noticing that the resulting XML schema is not complete.