This is an old-school Unix terminal way of mimicking the use of °∆fancy
quoting°« by using the backtick (`) and single quote (') because on
*some* terminals
they were shaped the same as °∆ and °«. Changing this would break many error
parsers that are used to Ruby doing it this way.

-a

On Thu, Jan 9, 2020 at 4:54 PM <kolano / gmail.com> wrote:

> Issue #16495 has been reported by Kolano (Kenneth Kolano).
>
> ----------------------------------------
> Bug #16495: Inconsistant Quotes in Error Messages
> https://bugs.ruby-lang.org/issues/16495
>
> * Author: Kolano (Kenneth Kolano)
> * Status: Open
> * Priority: Normal
> * Assignee:
> * Target version:
> * ruby -v: 2.5.3
> * Backport: 2.5: UNKNOWN, 2.6: UNKNOWN, 2.7: UNKNOWN
> ----------------------------------------
> Error messages use inconsistent pairs of quotes, for instance...
>
> ```
> -e:1:in `<main>': undefined local variable or method `foo' for main:Object
> (NameError)
> ```
> ...where a "fancy" quote is used on the left-hand side, and a standard
> single quote is used on the right.
>
> The same quotes should be used on either side of elements being quoted.
>
>
>
> --
> https://bugs.ruby-lang.org/
>
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