Mapping a Newline within a String

Today a colleague asked me how best to insert newlines into a concatenated set of address lines within a map. It struck me that despite spending eleven years as a BizTalk developer, creating hundreds if not thousands of maps,  and even authoring a Pluralsight course on the Mapper,  I’ve never actually attempted something as simple as inserting a newline into a string output!

Like most programmers with C# .NET experience, the first instinct was to try inserting “\n” or “\r\n” into the string. But of course that wouldn’t work – the output of a non-scripted mapper link is XSLT, not .NET code.

So that leads to the assumption that an XML entity character is required; surely that will work? Since the string “&#13&#10” is the XML entity representation of a carriage return followed by a line feed (CR LF), we should be able to just insert that as a constant parameter within the String Concatenate functoid:

01

But then it becomes evident that the mapper escapes all characters that might otherwise be unintentionally interpreted as markup:

02

Hmmm… not turning out to be as easy as we thought. Surely we don’t need to resort to inline XSLT just to insert a newline into text?

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