From: Nobuyoshi Nakada <nobu@...>
Date: 2011-01-16T13:37:48+09:00
Subject: [ruby-core:34518] Re: [Ruby 1.9-Bug#4282] Range#map inconsistency with blocks like {...} and do...end

(11/01/16 0:27), Andrei Kulakov wrote:
> I got that, but one thing: how exactly should I explicitly put parentheses around my expression?
> 
> Doing so:
> 
> p ((1..2).map do |i|
>   i
> end)
> 
> yields syntax errors:
> 
> issue.rb:1: syntax error, unexpected keyword_do_block, expecting ')'
> p ((1..2).map do |i|
>                 ^
> issue.rb:3: syntax error, unexpected keyword_end, expecting $end

Don't put a space between the method name and the argument.
When a space is placed, parentheses are considered as argument grouping,
and arguments can't have DO block.

-- 
Nobu Nakada