Search often gives insufficient results

[fingolfin]

The search function on https://docs.julialang.org is IMHO not very good. Some examples:

• searching for operators like ^ or && simply does not give any useful results at all
• OK, maybe I have to search for Base.^ or Base.:^? Nope, does not work either
• Interestingly, searching for Base.!= gives me a correct hit, but at about position 15 or so of the search results (number 1 is for some reason Base.fd?)
• but what I really wanted to find is Base.literal_pow, which is mentioned in the documentation for Base.:^, so let's search for that; oh yeah, that gives the right result -- but again only at position 10 or so of the search results
• though searching for literal_pow does work right, at least something
• searching for @info gives no hit at all
• searching for ... gives useless results (see Impossible to find ... (splat operator) in documantation JuliaLang/julia#36496)

I'll try to add more concrete examples as I come across them; but I've really struggled many times to find stuff in the Julia manual, even when I know it is there.

(This was JuliaLang/julia#38238)

[knuesel]

Maybe the function signatures should also be searched? Examples:

• Searching for raster in Gadfly's documenation gives no result although raster is a keyword argument of Gadfly.Coord.cartesian.
• Searching for AbstractWorkerPool doesn't list remotecall although it has an argument with that type.

[jariji]

Searching show_subheader finds 0 results but show_subheader appears on the Usage page. Both pages are on the dev version.

[fingolfin]

Some updates:

• searching for operators like ^ or && still is broken -- in the case of & my guess this is because it gets HTML escaped; for ^ maybe because it is a regex character?
• Base.!= now works perfectly
• Base.literal_pow also is good now
• though searching for literal_pow does work right, at least something
• searching for @info has hits now and even some reasonable ones
• searching for ... now gives no hits at all

So searching for ^ and && and ... still is broken but the rest seems fine now.