StringMatch utility should add weighting to exact prefix matches over separated matches.

[petetronic]

Add two files in the project root:

ASC.js
ActionScriptCompiler.js

While editing in some other file, open Cmd-T to access the Quick Open feature. Delete the @ sign if present, and then type "ASC".

It finds both ActionScriptCompiler.js and ASC.js, but ranks ActionScriptCompiler.js higher when it should probably prefer the exact match prefix for ASC.js at the top of the list.

[njx]

Reviewed. Marking low priority, but @dangoor or @pfarland, feel free to bump it up if you think it's more important as we're not clear on how frequently people will hit this.

[petetronic]

It now shows up in code hints proposals (because we're now using StringMatch utils for that too), so I think that makes it higher priority.

[dangoor]

I do think this makes a difference for code hinting. I'm going to bump it to medium priority to ensure that we get across the board good results with the new hinting. I don't think there's a lot of effort involved, so I've also slotted it in for this sprint.

[dangoor]

I've put up a pull request that boosts prefix matches and I think will generally make the heuristic better.

[njx]

Marking fix in progress

[dangoor]

With the landing of #3493, this is now fixed. I just verified using the case presented in the description (which is now also part of the stringmatch test suite)