[ruby-core:66296] [ruby-trunk - Bug #10483] [Feedback] Latest Ruby 2.1.4 update introduced backwards incompatible change related to boolean evaluation

Issue #10483 has been updated by Nobuyoshi Nakada.

Status changed from Open to Feedback
Priority changed from Normal to Low

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Bug #10483: Latest Ruby 2.1.4 update introduced backwards incompatible change related to boolean evaluation
https://bugs.ruby-lang.org/issues/10483#change-49961

* Author: Joe Seeley
* Status: Feedback
* Priority: Low
* Assignee: 
* Category: 
* Target version: current: 2.2.0
* ruby -v: ruby 2.1.4p265 (2014-10-27 revision 48166) [x86_64-darwin13.0]
* Backport: 2.0.0: UNKNOWN, 2.1: UNKNOWN
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The following, albeit ugly line of code (I didn't write it), worked in Ruby 2.1.1, but fails to evaluate in Ruby 2.1.4

    = f.inputs (((q.pick == 'none' || (q.pick == 'one' && q.display_type != "default")) && q.display_type != 'label' ) ? nil : q_text(q, render_context)),:id => rg ? "q_#{q.id}_#{rg}" : "q_#{q.id}",'data-id' => q.id,  :class => "q_#{renderer} #{css_class} #{state_prefix_class}" do

This exists within a haml template and the piece that appears to be causing the problem is this section here.

    (((q.pick == 'none' || (q.pick == 'one' && q.display_type != "default")) && q.display_type != 'label' )

When this is changed to span lines with some variable assignment, but no other changes it works correctly.

    - qid = rg ? "q_#{q.id}_#{rg}" : "q_#{q.id}"
    - q_render_context = (((q.pick == 'none' || (q.pick == 'one' && q.display_type != "default")) && q.display_type != 'label' ) ? nil : q_text(q, render_context))
    = f.inputs q_render_context, :id => qid,'data-id' => q.id,  :class => "q_#{renderer} #{css_class} #{state_prefix_class}" do

This original version produces the following error output.

    /Users/jseeley/code/eiacuc/app/views/partials/_question.html.haml:15: syntax error, unexpected keyword_do, expecting keyword_end     
    /Users/jseeley/code/eiacuc/app/views/partials/_question.html.haml:53: syntax error, unexpected keyword_ensure, expecting end-of-input

The error was produced on haml v4.0.5 with Ruby 2.1.4; the error does not occur on haml v4.0.5 and Ruby 2.1.1 or prior.




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