[michaelmior]

Language detection as discussed in the link is per-file. I don't think overriding individual files makes sense since it's likely to be more trouble than it's worth. But I can understand the desire to change the detected language of the project.

[Allan_Smithee]

How 'bout a project-specific property list that looks something like this:

.rb=RealBasic .m=Mercury .pl=Prolog .js=SomeCrapOrOther …

[michaelmior]

Seems like more effort than it's worth still to deal with project-specific settings. AFAIK the only two things this practically affects is syntax highlighting and repository stats. That approach would be a good tradeoff though if things are important enough.