[ruby-core:84551] [Ruby trunk Feature#14022] String#surround

Issue #14022 has been updated by shevegen (Robert A. Heiler).


> But for this really frequent case surround() still feels more elegant.

Agreed. It is not so frequent for my case, to be honest; but I like
the use case that sawa described since that is similar to ones I
experienced too, in regards to filenames (you know, file names which
may have empty spaces or ' characters and similar, but no " character).

"(#{variable})" works just fine or even '"'+filename+'"' :D but 
string.surround('"') may feel more elegant (or perhaps .pad() but
I guess the name .pad() may be semi-reserved or refer to whitespace ...
.surround() seems less problematic)

The wiki lists that it was discussed or mentioned in a developer meeting
in late November 2017:

https://bugs.ruby-lang.org/projects/ruby/wiki/DevelopersMeeting20171129Japan

Not sure if anything has been decided - some meetings seem to have LOTS
of issues, I wonder if the japanese devs can discuss all of these in
less than 4 hours. :)

Perhaps it could be brought up again in 2018 at the next developer
meeting, if time allows?

----------------------------------------
Feature #14022: String#surround
https://bugs.ruby-lang.org/issues/14022#change-69087

* Author: sawa (Tsuyoshi Sawada)
* Status: Open
* Priority: Normal
* Assignee: 
* Target version: 
----------------------------------------
After joining the elements of an array into a string using `Array#join`, I frequently need to put substrings before and after the string. In such case, I would have to use either of the following:

```ruby
[1, 2, 3].join(", ").prepend("<").concat(">") # => "<1, 2, 3>"
"<#{[1, 2, 3].join(", ")}>"                   # => "<1, 2, 3>"
"<" + [1, 2, 3].join(", ") + ">"              # => "<1, 2, 3>"
```

but none of them is concise enough. I wish there were `String#surround` that works like this:

```ruby
[1, 2, 3].join(", ").surround("<", ">") # => "<1, 2, 3>"
```



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