Issue #6265 has been updated by rosenfeld (Rodrigo Rosenfeld Rosas).


Thank you very much! I do also agree that we should warn users so that they have some time to change their "\" style to "+".

Also, while on the subject, don't you think that Ruby specs should state that ("some " + "string") would concatenate the strings in compiling time and that they shouldn't expect the :+ method to be called? That way we wouldn't have any perfomance degradation using this style...
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Feature #6265: Remove 'useless' 'concatenation' syntax
https://bugs.ruby-lang.org/issues/6265#change-25747

Author: rosenfeld (Rodrigo Rosenfeld Rosas)
Status: Assigned
Priority: Normal
Assignee: mame (Yusuke Endoh)
Category: 
Target version: 3.0


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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