The StringUtils package in a work-in-progress, where I am placing various improvements on the String functionality in Julia language.
Currently, it adds a Swift style string macro, u"...", which uses the Swift syntax for
interpolation, i.e. \(expression). This means that you never have to worry about strings with
the $ character in them, which is rather frequent in some applications.
Also, Unicode sequences are represented as in Swift, i.e. as \u{hexdigits}, where there
can be from 1 to 6 hex digits. This syntax eliminates having to worry about always outputting
4 or 8 hex digits, to prevent problems with 0-9,A-F,a-f characters immediately following.
Finally, I have added two new ways of representing characters in the literal string,
\:emojiname: and \{latexname}.
This makes life a lot easier when you want to keep the text of a program in ASCII, and
also to be able to write programs using those characters that might not even display
correctly in their editor.