Linguist jsm misclassification bug

Repo created to reproduce bug github-linguist/linguist#2377

The ui.jsm is taken from here

Steps I've made

1. Installed linguist (ubuntu 14.04).

   $ sudo gem install github-linguist
   ...
   
   Successfully installed github-linguist-4.5.4
   
   ...
   

2. Cd to repo folder and run next commands in irb1.9.1:

   require 'rugged'
   require 'linguist'
   
   repo = Rugged::Repository.new('.')
   project = Linguist::Repository.new(repo, repo.head.target_id)
   project.language       #=> "Java"

   The output from last command should be "Javascript".

3. After adding .gitattributes with content:

   *.jsm linguist-language=Javascript
   

   project.language returns 'Javascript' (did not commit that in repo).

Resolved (solution)

Wrong modeline was set for this file. So it is better to change Mode: Java on Mode: Javascript (github-linguist/linguist#2377 (comment)).