iOS: Localise multi-line string literals

Both keys and values in the Localizable.strings file can be multi-line. With

"Hi,

 I would like to share the following feedback:
" = "Hallo,

 ich möchte folgendes Feedback geben:
";

the call

let localizedMessage = NSLocalizedString("""
                      Hi,

                       I would like to share the following feedback:

                      """, comment: "")

expands as intended.

This might however not work with localization tools, and also does not display with the correct syntax coloring in the Localizable.strings, which might be confusing.

I would use a short (single-line) key instead, and localize that for all languages (including the default language english).