https://stackoverflow.com/questions/43891605/search-partial-...
So, you end up having to clone all repos locally and grep for the word.
Just pointing out that limitation of search in GitHub, not saying that this other tool is actually reliable to do this kind of things (I haven't used it before)
To compare GitHub to Sourcegraph search, here is that same query on Sourcegraph.com (which is Sourcegraph Server running for all open-source code on GitHub):
https://sourcegraph.com/search?q=repo:Kurento/+DISABLE_LIBRA...
It works as expected (and as the SO poster wanted)! It shows desired results that GitHub search does not.
Regexps are also supported...give it a try!
does it parse the code and store the AST, or is it just plain text ?
It does have code intelligence (parsing, semantic references and go-to-def, etc.) but that search is just a text search.