Ensure correct filetype on neomutt.

This pattern is copied from upstream filetype.vim except that it says
"neomutt" instead of "mutt".

diff --git a/after/filetype.vim b/after/filetype.vim
new file mode 100644 (file)
index 0000000..4eea862
--- /dev/null
+++ b/after/filetype.vim
@@ -0,0 +1 @@
+au BufNewFile,BufRead neomutt-*-\w\+ setf mail