Bug with colon in name of PORT

[CheshireB]

Example

from graphviz import Digraph

dot = Digraph('structs', node_attr={'shape': 'plaintext'})

dot.node('struct1',
            '''< 
                <TABLE BORDER="0" CELLBORDER="1" CELLSPACING="0" CELLPADDING="4">
                    <TR>
                        <TD PORT="1" ROWSPAN="2">1</TD>
                        <TD PORT="1:2" ROWSPAN="1">1:2</TD>
                    </TR>
                    <TR>
                        <TD PORT="1:3" ROWSPAN="1">1:3</TD>
                    </TR>
                </TABLE>
            >'''
)

dot.node('struct2',
            '''< 
                <TABLE BORDER="0" CELLBORDER="1" CELLSPACING="0" CELLPADDING="4">
                    <TR>
                        <TD PORT="2" ROWSPAN="2">2</TD>
                        <TD PORT="2:2" ROWSPAN="1">2:2</TD>
                    </TR>
                    <TR>
                        <TD PORT="2:3" ROWSPAN="1">2:3</TD>
                    </TR>
                </TABLE>
            >'''
)

dot.edges([('struct1:1:2', 'struct2:2:2')])



dot.view('test-output/round-table.gv')

Result

Warning: node struct1, port 1, unrecognized compass point '2' - ignored
Warning: node struct2, port 2, unrecognized compass point '2' - ignored

** (exo-open:15248): WARNING **: Couldn't connect to accessibility bus: Failed to connect to socket /tmp/dbus-UFsPtsUMtY: Connection refused

dot.source

digraph structs {
	node [shape=plaintext]
	struct1 [label=< 
                <TABLE BORDER="0" CELLBORDER="1" CELLSPACING="0" CELLPADDING="4">
                    <TR>
                        <TD PORT="1" ROWSPAN="2">1</TD>
                        <TD PORT="1:2" ROWSPAN="1">1:2</TD>
                    </TR>
                    <TR>
                        <TD PORT="1:3" ROWSPAN="1">1:3</TD>
                    </TR>
                </TABLE>
            >]
	struct2 [label=< 
                <TABLE BORDER="0" CELLBORDER="1" CELLSPACING="0" CELLPADDING="4">
                    <TR>
                        <TD PORT="2" ROWSPAN="2">2</TD>
                        <TD PORT="2:2" ROWSPAN="1">2:2</TD>
                    </TR>
                    <TR>
                        <TD PORT="2:3" ROWSPAN="1">2:3</TD>
                    </TR>
                </TABLE>
            >]
}

Image

Info
graphviz: 0.8.3
python: 3.6

[xflr6]

Thanks, loosely related to #53 (special status of colon in the DOT language). From the language specification, I think that you would need to quote a port name that should contain a literal :, but it does not seem to work with the following (raw DOT, using " to escape the quoting of 1:2 in the PORT attribute):

In [1]: import graphviz
   ...: 
   ...: s = graphviz.Source('''
   ...: digraph structs {
   ...:   node [shape=plaintext]
   ...:   struct1 [label=< 
   ...:     <TABLE BORDER="0" CELLBORDER="1" CELLSPACING="0" CELLPADDING="4">
   ...:       <TR>
   ...:         <TD PORT="1" ROWSPAN="2">1</TD>
   ...:         <TD PORT="&quot;1:2&quot;" ROWSPAN="1">1:2</TD>
   ...:       </TR>
   ...:       <TR>
   ...:         <TD PORT="1:3" ROWSPAN="1">1:3</TD>
   ...:       </TR>
   ...:     </TABLE>>]
   ...:   struct2 [label=< 
   ...:     <TABLE BORDER="0" CELLBORDER="1" CELLSPACING="0" CELLPADDING="4">
   ...:       <TR>
   ...:         <TD PORT="2" ROWSPAN="2">2</TD>
   ...:         <TD PORT="&quot;2:2&quot;" ROWSPAN="1">2:2</TD>
   ...:       </TR>
   ...:       <TR>
   ...:         <TD PORT="2:3" ROWSPAN="1">2:3</TD>
   ...:       </TR>
   ...:     </TABLE>>]
   ...:   struct1:"1:2" -> struct2:"2:2"
   ...: }''')

Do you know a working DOT source works for this (literal colon in port)? Might be an upstream issue. I guess one can currently work around by avoiding : in port names.

[xflr6]

Looks like Graphviz (the upstream package) does not support colons in port names properly. I could not find a working DOT source for using a port name with a colon. E.g. the following does not work as intended:

import graphviz

graphviz.Source(r'''
digraph g {
  spam[label="left|middle|<f2:1> right", shape=record]
  spam:"f2:1" -> "eggs:eggs":s
}''')
Warning: node spam, port f2 unrecognized
Out[1]: 

Also does not start the edge from the right port when using this instead:
spam -> "eggs:eggs":s [taillabel="f2:1"].

For issues with colons in edge statements specific to this package see #53.
Closing this for now (AFAIU, you could report this upstream to https://gitlab.com/graphviz/graphviz/issues).