afs opened a new issue, #2167:
URL: https://github.com/apache/jena/issues/2167
### Version
5.0.0
### Feature
The Jena 4.x behaviour for writing URIs is to write whatever the string is.
URIs from a parser are correct by RFC3986.
But applications can create URIs from strings and include characters that do
not pass the Turtle (etc) grammar rule of
```
IRIREF ::= '<' ([^#x00-#x20<>"{}|^`\] | UCHAR)* '>'
```
The rule on its own is not enough - a IRIREF must also conform to the syntax
of RFC3986/7.
Note: URIs with spaces in are bad URIs.
Jena5 is an opportunity to change the behaviour of Jena.
What should Jena do?
Choices:
- Same as Jena4
- Write a UCHAR (`\uNNNN`) - legal by that `IRIREF`, illegal as a URI (`\`
is not legal in a URI).
- Write `percent encoded output %NN` - this changes the URI to a a different
URI (the bad character is changed to three characters `%`, `X`, `X` for hex
characters).
- Some mixture
- Throw an exception and stop the output.
### Are you interested in contributing a solution yourself?
Perhaps?
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