Issue #14022 has been updated by avit (Andrew Vit).


An alternate (short but cryptic) way:

```
str = "one\ntwo"
str.gsub(/^.*/m, '<\0>')
```

- gsub! can do it destructively
- using `/m` can control if it wraps each line, or all

(A similar usage for wrapping characters in a string is shown in the String#gsub documentation)

Out of curiosity, can someone explain why the `^` is needed in my regex?

----------------------------------------
Feature #14022: String#surround
https://bugs.ruby-lang.org/issues/14022#change-67367

* 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>"
```



-- 
https://bugs.ruby-lang.org/

Unsubscribe: <mailto:ruby-core-request / ruby-lang.org?subject=unsubscribe>
<http://lists.ruby-lang.org/cgi-bin/mailman/options/ruby-core>