Issue #16275 has been updated by nobu (Nobuyoshi Nakada).

Description updated
Subject changed from Revert .: syntax to Revert `.:` syntax

It is not just for °»the functional programming style°….
Originally it was to extract the exact method even if `obj.method` was overridden.

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Feature #16275: Revert `.:` syntax
https://bugs.ruby-lang.org/issues/16275#change-82281

* Author: naruse (Yui NARUSE)
* Status: Open
* Priority: Normal
* Assignee: 
* Target version: 
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`obj.:method` is introduced at r66667 by #12125 and #13581.
It encourages the functional programming style in Ruby.

But this shorthand syntax is just for methods of `self` without arguments.
It causes another feature requests like #16273 (and lambda compositions like #15428).

Such features will introduce a new view of Ruby but no one illustrates the whole picture yet.
I worried about such patch work may cause a conflict with future expansion of functional programing style or a just a garbage feature.

`.:` syntax is introduced in 2.7.0 preview1, not released in production yet.
How about reverting at this time and re-introduce with a big picture.



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