account for let &makeprg in Dispatch makeprg detection in compiler file

The following idiom in a compiler/*.vim file

let &l:makeprg = 'm'
exe 'CompilerSet makeprg='..escape(&l:makeprg, ' "')

should work fine (maybe requiring further escapes!?), but is not accounted for by :Dispatch.
I suspect a regex searches for makeprg=\w+ ?

One can work around by " CompilerSet makeprg=m comments, but that seems rather something to be fixed on Dispatch's side

The following idiom in a compiler/*.vim file

Can you show me some real world examples?

One can work around by " CompilerSet makeprg=m comments, but that seems rather something to be fixed on Dispatch's side

Fixed how? Seems well beyond the limits of what can be accomplished with regex.

Can you show me some real world examples?

I sneaked in besaid comment just in case

Fixed how? Seems well beyond the limits of what can be accomplished with regex.

Maybe something like \v<makeprg>\W+=\W+<m> if not too slow?

Sunbelt Computer Software