Crash from space_before_script.rb

[MicahElliott]

% cat haml_lint_bug.html.haml
%p= @foo.bar
% haml-lint -i SpaceBeforeScript haml_lint_bug.html.haml
/home/mde/.gem/ruby/2.1.2/gems/haml-lint-0.5.2/lib/haml_lint/linter/space_before_script.rb:73:in `next_node': undefined method `children' for nil:NilClass (NoMethodError)
    from /home/mde/.gem/ruby/2.1.2/gems/haml-lint-0.5.2/lib/haml_lint/linter/space_before_script.rb:80:in `next_node'
    from /home/mde/.gem/ruby/2.1.2/gems/haml-lint-0.5.2/lib/haml_lint/linter/space_before_script.rb:58:in `tag_with_inline_text'
    from /home/mde/.gem/ruby/2.1.2/gems/haml-lint-0.5.2/lib/haml_lint/linter/space_before_script.rb:13:in `visit_tag'
    from /home/mde/.gem/ruby/2.1.2/gems/haml-lint-0.5.2/lib/haml_lint/haml_visitor.rb:16:in `visit'
    from /home/mde/.gem/ruby/2.1.2/gems/haml-lint-0.5.2/lib/haml_lint/haml_visitor.rb:25:in `block in visit_children'
    from /home/mde/.gem/ruby/2.1.2/gems/haml-lint-0.5.2/lib/haml_lint/haml_visitor.rb:25:in `each'
    from /home/mde/.gem/ruby/2.1.2/gems/haml-lint-0.5.2/lib/haml_lint/haml_visitor.rb:25:in `visit_children'
    from /home/mde/.gem/ruby/2.1.2/gems/haml-lint-0.5.2/lib/haml_lint/haml_visitor.rb:21:in `visit'
    from /home/mde/.gem/ruby/2.1.2/gems/haml-lint-0.5.2/lib/haml_lint/linter.rb:13:in `run'
    from /home/mde/.gem/ruby/2.1.2/gems/haml-lint-0.5.2/lib/haml_lint/runner.rb:39:in `block in find_lints'
    from /home/mde/.gem/ruby/2.1.2/gems/haml-lint-0.5.2/lib/haml_lint/runner.rb:38:in `each'
    from /home/mde/.gem/ruby/2.1.2/gems/haml-lint-0.5.2/lib/haml_lint/runner.rb:38:in `find_lints'
    from /home/mde/.gem/ruby/2.1.2/gems/haml-lint-0.5.2/lib/haml_lint/runner.rb:27:in `block in run'
    from /home/mde/.gem/ruby/2.1.2/gems/haml-lint-0.5.2/lib/haml_lint/runner.rb:26:in `each'
    from /home/mde/.gem/ruby/2.1.2/gems/haml-lint-0.5.2/lib/haml_lint/runner.rb:26:in `run'
    from /home/mde/.gem/ruby/2.1.2/gems/haml-lint-0.5.2/lib/haml_lint/cli.rb:59:in `run'
    from /home/mde/.gem/ruby/2.1.2/gems/haml-lint-0.5.2/bin/haml-lint:8:in `block in <top (required)>'
    from /home/mde/.gem/ruby/2.1.2/gems/haml-lint-0.5.2/bin/haml-lint:6:in `tap'
    from /home/mde/.gem/ruby/2.1.2/gems/haml-lint-0.5.2/bin/haml-lint:6:in `<top (required)>'
    from /home/mde/.gem/ruby/2.1.2/bin/haml-lint:23:in `load'
    from /home/mde/.gem/ruby/2.1.2/bin/haml-lint:23:in `<main>'

[sds]

Hey @MicahElliott, sorry for the delay in getting back to you.

I've tried running haml-lint against your example (ruby 2.1.2, haml-lint 0.5.2) and I can't reproduce the issue.

Which version of the haml gem do you have installed? There might be an expected problem with a slightly older minor version (e.g. something older than 4.0.5) which causes this problem.