v7.13.0: undefined method `include?' for nil:NilClass (NoMethodError)

[tsaini123]

I am getting NoMethodError for some repos after upgrading to v7.13.0. Any idea how to fix it?

`ruby/gems/2.6.0/gems/github-linguist-7.13.0/lib/linguist/generated.rb:451:in `generated_antlr?': undefined method `include?' for nil:NilClass (NoMethodError)
	from /usr/local/rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/github-linguist-7.13.0/lib/linguist/generated.rb:86:in `generated?'
	from /usr/local/rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/github-linguist-7.13.0/lib/linguist/generated.rb:12:in `generated?'
	from /usr/local/rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/github-linguist-7.13.0/lib/linguist/blob_helper.rb:359:in `generated?'
	from /usr/local/rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/github-linguist-7.13.0/lib/linguist/lazy_blob.rb:52:in `generated?'
	from /usr/local/rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/github-linguist-7.13.0/lib/linguist/blob_helper.rb:382:in `include_in_language_stats?'
	from /usr/local/rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/github-linguist-7.13.0/lib/linguist/repository.rb:164:in `block in compute_stats'
	from /usr/local/rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/github-linguist-7.13.0/lib/linguist/repository.rb:149:in `each_delta'
	from /usr/local/rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/github-linguist-7.13.0/lib/linguist/repository.rb:149:in `compute_stats'
	from /usr/local/rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/github-linguist-7.13.0/lib/linguist/repository.rb:116:in `cache'
	from /usr/local/rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/github-linguist-7.13.0/lib/linguist/repository.rb:98:in `breakdown_by_file'
	from /usr/local/rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/github-linguist-7.13.0/bin/github-linguist:48:in `<top (required)>'
	from /usr/local/rvm/rubies/ruby-2.6.3/bin/github-linguist:23:in `load'
	from /usr/local/rvm/rubies/ruby-2.6.3/bin/github-linguist:23:in `<main>'
	from /usr/local/rvm/rubies/ruby-2.6.3/bin//ruby_executable_hooks:24:in `eval'
	from /usr/local/rvm/rubies/ruby-2.6.3/bin//ruby_executable_hooks:24:in `<main>'`

[lildude]

🤔 The method causing the issue is:

https://github.com/github/linguist/blob/6842d8ccd8f205b4b60abc4657de1a29b243cbe1/lib/linguist/generated.rb#L449-L452

... specifically the last return line. It would indicate there is an empty file with a .g extension that has triggered this.

Sure enough, I can reproduce this:

$ git init -q foo
$ cd foo
$ touch foo.g
$ git add foo.g
$ git commit -m 'Add foo'
[main (root-commit) 1fbefd7] Add foo
 1 file changed, 0 insertions(+), 0 deletions(-)
 create mode 100644 foo.g
$ github-linguist .
Traceback (most recent call last):
	13: from /Users/lildude/.asdf/installs/ruby/2.7.2/bin/github-linguist:23:in `<main>'
	12: from /Users/lildude/.asdf/installs/ruby/2.7.2/bin/github-linguist:23:in `load'
	11: from /Users/lildude/.asdf/installs/ruby/2.7.2/lib/ruby/gems/2.7.0/gems/github-linguist-7.13.0/bin/github-linguist:31:in `<top (required)>'
	10: from /Users/lildude/.asdf/installs/ruby/2.7.2/lib/ruby/gems/2.7.0/gems/github-linguist-7.13.0/lib/linguist/repository.rb:68:in `languages'
	 9: from /Users/lildude/.asdf/installs/ruby/2.7.2/lib/ruby/gems/2.7.0/gems/github-linguist-7.13.0/lib/linguist/repository.rb:116:in `cache'
	 8: from /Users/lildude/.asdf/installs/ruby/2.7.2/lib/ruby/gems/2.7.0/gems/github-linguist-7.13.0/lib/linguist/repository.rb:149:in `compute_stats'
	 7: from /Users/lildude/.asdf/installs/ruby/2.7.2/lib/ruby/gems/2.7.0/gems/github-linguist-7.13.0/lib/linguist/repository.rb:149:in `each_delta'
	 6: from /Users/lildude/.asdf/installs/ruby/2.7.2/lib/ruby/gems/2.7.0/gems/github-linguist-7.13.0/lib/linguist/repository.rb:164:in `block in compute_stats'
	 5: from /Users/lildude/.asdf/installs/ruby/2.7.2/lib/ruby/gems/2.7.0/gems/github-linguist-7.13.0/lib/linguist/blob_helper.rb:382:in `include_in_language_stats?'
	 4: from /Users/lildude/.asdf/installs/ruby/2.7.2/lib/ruby/gems/2.7.0/gems/github-linguist-7.13.0/lib/linguist/lazy_blob.rb:52:in `generated?'
	 3: from /Users/lildude/.asdf/installs/ruby/2.7.2/lib/ruby/gems/2.7.0/gems/github-linguist-7.13.0/lib/linguist/blob_helper.rb:359:in `generated?'
	 2: from /Users/lildude/.asdf/installs/ruby/2.7.2/lib/ruby/gems/2.7.0/gems/github-linguist-7.13.0/lib/linguist/generated.rb:12:in `generated?'
	 1: from /Users/lildude/.asdf/installs/ruby/2.7.2/lib/ruby/gems/2.7.0/gems/github-linguist-7.13.0/lib/linguist/generated.rb:86:in `generated?'
/Users/lildude/.asdf/installs/ruby/2.7.2/lib/ruby/gems/2.7.0/gems/github-linguist-7.13.0/lib/linguist/generated.rb:451:in `generated_antlr?': undefined method `include?' for nil:NilClass (NoMethodError)
$ echo "foo" > foo.g
$ git commit -am 'Goo'
[main f180e5d] Goo
 1 file changed, 1 insertion(+)
$ github-linguist .
100.00% GAP
$

I've just opened #5268 to fix this. Thanks for bringing this to our attention 🙇