--include doesn't understand directories when using --transform

[panta]

In fact, when doing:

node_modules/.bin/gluejs --verbose --transform coffeeify --global App --include client/app/ --out public/app.js

I get the output:

[===================] 2 / 2 100% 0.0s
Error in input pipe to pipe: 2 -> 3 { [Error: EISDIR, read] errno: 28, code: 'EISDIR' }

But without transform:

node_modules/.bin/gluejs --verbose --global App --include client/app/ --out public/app.js

I get:

commonjs info Excluded non-js/non-json file: client/app
commonjs info Excluded non-js/non-json file: client/app/index.coffee
commonjs info Processing package: root