From: "marcandre (Marc-Andre Lafortune)" <ruby-core@...>
Date: 2012-04-06T23:52:03+09:00
Subject: [ruby-core:44160] [ruby-trunk - Feature #6265] Remove 'useless' 'concatenation' syntax


Issue #6265 has been updated by marcandre (Marc-Andre Lafortune).

Target version changed from 3.0 to 2.0.0

Hi,

now (Nikolai Weibull) wrote:
> On Fri, Apr 6, 2012 at 14:53, rosenfeld (Rodrigo Rosenfeld Rosas)
>  <rr.rosas@gmail.com> wrote:
>  
>  > What is this ('concatenation' 'syntax') useful for?
>  
>  raise ArgumentError,
>    'they are useful for long strings that are so long that they need ' \
>    'to span multiple lines to fit within a reasonable line width'

In this example, replacing the "\" with a "+" will give basically the same result without using the concatenation rule.

Are there valid use cases where two strings are concatenated on the same line? I think that's really what the request is all about, i.e. forbid that kind of concatenation for two strings on the same line.

----------------------------------------
Feature #6265: Remove 'useless' 'concatenation' syntax
https://bugs.ruby-lang.org/issues/6265#change-25682

Author: rosenfeld (Rodrigo Rosenfeld Rosas)
Status: Open
Priority: Normal
Assignee: matz (Yukihiro Matsumoto)
Category: 
Target version: 2.0.0


What is wrong with this code:

some_method 'argument1', 'argument2' 'argument3'

Yes, the missing colon, but it is not always easy to notice that...

What is this ('concatenation' 'syntax') useful for?

Why writing ('some ' 'concatenation') instead of 'some concatenation'?

A missing colon between string arguments can lead to some bugs that may be hard to find, specially if the arguments are optional.

And I can't see any useful case where this allowed syntax for concatenation would help.


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