Failure to apply EditorConfig settings in dirs with funny names

[monnier]

If I have a ~/[hello]/.editorconfig file with a pattern for /*.c, its settings aren't applied because the code ends up matching
~/[hello]/myfile.c against the pattern ~/[hello]/*.c. We could fix the problem by quoting the special chars like [ but it's kind of silly to do that (and it's more work for fnmatchp and won't hit as often in its cache) when we can instead match
myfile.c against *.c.

I pushed a patch which does the latter to the scratch/editorconfig (in nongnu.git).
To consult that branch you can do:

git remote add -ft scratch/editorconfig nongnu git://git.sv.gnu.org/emacs/nongnu.git
git log nongnu/scratch/editorconfig

The new code passes all the tests for me. The branch includes a few other changes I think we should include, but do let me know if there's some objection to any of those changes, of course.

[monnier]

Ping?