[ruby-core:66612] [ruby-trunk - misc #10541] Remove shorthand string interpolation syntax

Issue #10541 has been updated by Recursive Madman.


Brian Hempel wrote:
> Answer: 19,869 of those string interpolations were like "#{@ivar}" or "#{$gvar}" or "#{@@cvar}". (Compared to 1,376 shorthand interpolations.)

Did you also check what character followed those interpolations? e.g. "#{@foo}bar" wouldn't be a candidate for the shorthand, so that shouldn't be counted.

There aren't that many cases, where the shorthand actually can be used, but in those rare cases I find it improves readability.
One such case is appending an extension to a filename, e.g. "#@filename.bak".

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misc #10541: Remove shorthand string interpolation syntax
https://bugs.ruby-lang.org/issues/10541#change-50229

* Author: Daniel Morrison
* Status: Open
* Priority: Normal
* Assignee: Yukihiro Matsumoto
* Category: syntax
* Target version: current: 2.2.0
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I would like to see the shorthand string interpolation syntax, "foo#@bar" deprecated and then removed in 3.0.

My reasons:

1. Most experienced Ruby developers I've talked to don't even know it exists.
2. It has been the cause of real problems. http://status.cloudamqp.com/incidents/vj62pnp62tj9

When a syntax is not widely known and has the potential for problems, I think it makes sense to deprecate and remove. 



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