Issues with DDC notations in ConceptScheme

[stefandesu]

Given the following instance of ConceptScheme:

const ddc = new ConceptScheme({
    uri: "http://dewey.info/scheme/edition/e23/",
    uriPattern: "^http://dewey.info/class/(.+)/e23/$",
    notationPattern: "(([0-9][0-9]?|[0-9]{3}(-[0-9]{3})?|[0-9]{3}\\.[0-9]+(-[0-9]{3}\\.[0-9]+(:[0-9]+)?)?|T[1-9][A-Z]?--[0-9]+(-T[1-9][A-Z]?--[0-9]+(:[0-9]+)?)?|[1-9][A-Z]?--[0-9]+(-[1-9][A-Z]?--[0-9]+(:[0-9]+)?)?)?)",
  })

The following case causes issues:

ddc.uriFromNotation("T1--0901-T1--0905:07")

• [ ] Currently in jskos-tools v1.0.34, the resulting URI and notation both encode the : even though it shouldn't be encoded (this is a regression in v1.0.34 in particular)
• [ ] In our data (e.g. in Cocoda), we are using a short form of that notation in the URI: http://dewey.info/class/1--0901-0905:07/e23/. If we wanted jskos-tools to generate correct URIs, we would need to add special handling for DDC. However, this is still up to discussion, see https://github.com/gbv/jskos-data/issues/47.