Repo indexer - empty results for specific documents

gitea master version number d29aa76

Trying to use repository indexer, I seen that some results for specific documents (like JSP and JRXML), doesn't show the context:

The line numbers are rights, but not text is showed in result.

To replicate this kind of problem, try to clone this test repo: https://github.com/1212050/Shopping-web-Jsp-Servlet
and try to search for "jsp" text.
You will see:

[lunny]

Maybe an encoding problem?

[thehowl]

Hmmm... tested this on my own and... uhhh... why exactly is this not escaped?

(search HTML)

(original file)

This can be seen pretty clerarly by XML tags being encoded as they are.

@lunny This is pretty critical because it's XSS. Please add to 1.4.0 and kind/security.

Thank you @thehowl , so, it's only needed to escape some additional strings to view the file text context, right?

[thehowl]

Yes, that's right.

Thank you very much guys. I will test that PR on master release as soon as drone will be able to build/release it