[ruby-core:66606] [ruby-trunk - misc #10541] Remove shorthand string interpolation syntax

Issue #10541 has been updated by Brian Hempel.


Steve Richert asked me how many of those 353,199 regular interpolations could have been replaced by shorthand interpolations, since most string interpolations will contain a local variable, a method, or a method.

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

So, when the shorthand syntax could be used, 93.5% of the time the regular syntax was used anyway. The shorthand was only used in 6.5% of the cases where it could have been used. 14 times less common.

~~~
18040  "#{@ivar}"
1667   "#{$gvar}"
162    "#{@@cvar}"
~~~

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misc #10541: Remove shorthand string interpolation syntax
https://bugs.ruby-lang.org/issues/10541#change-50223

* 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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