[bug report] URI fragments in links are discarded if the link value is not quoted

[pmoura]

URI fragments in links are discarded if the link value is not quoted. For example:

"file_footer/3_": {
shape: rectangle
style.fill: cornsilk
style.stroke-dash: 0
link: https://github.com/LogtalkDotOrg/logtalk3/tree/330727f23afc4fcefe919b0a95e112fe8c898d69/tools/diagrams/d2_graph_language.lgt#L123
label: ""
text: |md
## file_footer/3
#### local
|
}

The #L123 fragment is missing in the SVG output when the value of link as in the example above is not quoted. Wondering if this a bug or a character escape issue? In any case, I suggest at least updating the documentation on link to advise quoting the values to preserve the URI fragments.

[bo-ku-ra]

and

  # comment

  foo: {
    shape: class
    \# bar: \#protected
  }

the use of the '#' is complicated.