http://example.com/?a=b ttl -> provn -> ttl roundtrip error

[dtm]

~ 70% cat test.ttl
@prefix prov: <http://www.w3.org/ns/prov#> .

<http://example.com/?a=b> a prov:Entity.

~ 71% provconvert -infile test.ttl -outfile - -outformat provn
document
prefix pre_1 <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
prefix bnode <http://openprovenance.org/provtoolbox/bnode/>
prefix xsd <http://www.w3.org/2001/XMLSchema>
prefix pre_0 <http://example.com/>
entity(pre_0:?a=b)
endDocument

~ 72% provconvert -infile test.ttl -outfile - -outformat provn|provconvert -infile - -informat provn -outfile - -outformat ttl
line 6:15 mismatched input '=' expecting ')'
extensibility: qnameDisabled false b
line 6:17 mismatched input ')' expecting '('
@prefix prov: <http://www.w3.org/ns/prov#> .
@prefix pre_1: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix bnode: <http://openprovenance.org/provtoolbox/bnode/> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
@prefix pre_0: <http://example.com/> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .

~ 73%

Should it be:

entity(pre_0:?a\=b)

Which incidentally gives:

~ 74% provconvert -infile test.provn -outfile - -outformat ttl
<http://example.com/?a\\=b> a prov:Entity .

[lucmoreau]

The last two commits are now addressing this issue. Would be interesting to try round trip on a whole range of URIs ....

[dtm]

I've been meaning to look at Fuzzing tools. Ideally you'd want something that you can give a grammar to but I'm not sure whats out there.

[lucmoreau]

Issue now addressed in development branch.