Issue #15236 has been updated by ignatiusreza (Ignatius Reza Lesmana).


PR for alternative syntax `{ a: }`: https://github.com/ruby/ruby/pull/2231

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Feature #15236: add support for hash shorthand
https://bugs.ruby-lang.org/issues/15236#change-78417

* Author: ignatiusreza (Ignatius Reza Lesmana)
* Status: Open
* Priority: Normal
* Assignee: 
* Target version: 
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PR in github: https://github.com/ruby/ruby/pull/1990

inspired by javascript support for object literal shorthand notation `{ a }`, which will be expanded into `{ a: a }`..

to avoid ambiguity, this shorthand is only supported when hash is defined with `{ }` notation.. in other situation where the brackets is optional, e.g. function call, we still need to write it in full (`m(a : a)` instead of `m(a)`, or `m(a, b, c: c)` instead of `m(a, b, c)`..



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