RuboCop: useless assignment bug?

[lencioni]

I'm not sure if this is a bug in haml-lint or RuboCop, but haml-lint 0.7.0 and rubocop 0.26.1, I get a problem on line 1 of the following haml file:

- things = [1, 2]
- things.each do |thing|
  = thing

RuboCop: Useless assignment to variable = things

[sds]

Hey @lencioni,

I'm unable to reproduce this locally. My guess is an unsaved vim buffer?

Let me know if you still are able to reproduce and we can investigate further.

[lencioni]

I am able to reproduce this consistently. I did just now by creating a new file with the contents I specified above and ran haml-lint on just that file via the command line.

haml-lint 0.7.0, rubocop 0.27.1.

When I run haml-lint --version, I also get these warnings:

warning: parser/current is loading parser/ruby21, which recognizes
warning: 2.1.4-compliant syntax, but you are running 2.1.2.

I can show you at the office tomorrow if you are interested.

[sds]

Interesting. I can't reproduce this on CentOS or Mac OS X Yosemite after uninstalling/installing haml-lint 0.7.0 and rubocop 0.27.1 for Ruby 2.1.2 (I do get the parser warning, but not the RuboCop error). We'll have to have a look tomorrow I guess.

[sds]

This seems to have something to do with your system running the latest version of the haml gem (4.1.0.beta.1 at time of writing).

This version likely mucked around with the parse tree representation. Will have a look when I can.

[sds]

Fixed in b504293 and released in 0.8.0