Escaping issue?

[renefritze]

I want to format a Turtle file that looks something like this:

@prefix dc:      <http://purl.org/spar/datacite/> .
@prefix doi:     <https://doi.org/> .
something a :publication ; rdfs:label "Paper title" ;
    dc:hasIdentifier doi:10.1137\/1.9781611970937 . 

The forward slash escaping is necessary for us to pass validation with riot from the Jena package. Inputting above text into
owl write I get (Where line/col matches the slash position)

Error: Encountered " "\\" "\\ "" at line 32, column 30.
Was expecting one of:
    ";" ...
    "," ...
    "." ...

Is this an issue with the input parser? Is riot wrong in validating this?

[atextor]

Hi, the good news is: I can reproduce the problem with the following model:

@prefix dc:      <http://purl.org/spar/datacite/> .
@prefix doi:     <https://doi.org/> .
@prefix : <http://example.org#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .

:something a :publication ;
    rdfs:label "Paper title" ;
    dc:hasIdentifier doi:10.1137\/1.9781611970937 .

turtle-formatter and owl-cli also use Jena as an RDF library, which provides multiple ways to parse a file. As it did not use the same method as riot, I built a minimal project that tries to load the file using both ways. Both ways load the file as intended, so this is not an issue with either Jena's libraries or the riot tool. I'm not sure yet what the problem is, but it's most certainly a bug.

[atextor]

After some investigation, it seems this is caused by Jena's internal RDF parsers handling escapes differently. The RIOT parser which handles this correctly is added automatically via service loading when jena-arq is added as a dependency. For turtle-formatter, this is the case, while for owl-cli it isn't, so this is actually an issue there: atextor/owl-cli#1.

[atextor]

@renefritze The fix for the broken parsing is done. Furthermore, serialization of escapes was broken as well (see #4). Both fixes are in the just released owl-cli version 1.2.0.

[renefritze]

Excellent, thank you.