Extend and/or queries to return multiple result types

[rvantonder]

Example, this query newRouter or file:router.go should work and return both results types.

https://sourcegraph.com/search?q=repo:%5Egithub%5C.com/sourcegraph/sourcegraph%24+newRouter+or+file:router.go&patternType=regexp

and

similarly file:main.java AND reserved should work as an alias for file:main reserved

This is separate from expanding and/or queries to arbitrary scope (nested queries). It concerns the type of the expression result.

(This is a significant chunk of work that I've had in mind, but hadn't create an issue yet. Will likely happen in one or two iterations in future at the current pace of things.)

[rvantonder]

Self note: use case by @rrhyne

but not lang:php OR lang:javascript. How would I accomplish the latter filter?

This one is interesting because we don't support regex as a lang field, so would actually have to expand something like lang:php or lang:javascript foo => lang:php foo or lang:javascript foo.

[rrhyne]

This may become more important depending on how RFC 159 resolves.

The use case is: allow a user to limit the scope of queries run on sourcegraph.com/search to languages they know and therefore more interested in.

There may be other ways to accomplish this as well, so if you can think of anything, please comment on that RFC!

[rvantonder]

The note above is more of an implementation concern. We will support it one way or another with something as simple as lang:php or lang:javascript, like in the original query. It may just be a function of internally rewriting the query in the backend. I added my thoughts re syntax (which is slightly orthogonal to the note above) in RFC 159 :-)

[rvantonder]

Closing in favor of the search expressions issue 13126, which reflects the most up-to-date functionality.