SRFI 185 is now in final status. Scheme specifies mutable fixed-length strings. SRFI 118 adds two procedures, string-append! and string-replace!, which allow the length of the string to change. This SRFI provides two linear-update versions of these procedures: that is, the implementation may change the string length or return a new string instead. In addition, two convenience macros are provided that make the procedures somewhat easier to use.
