chickadee » srfi-13 » string-concatenate/shared

string-concatenate/shared string-listprocedure
string-append/shared s_1 ...procedure

These two procedures are variants of string-concatenate and string-append that are permitted to return results that share storage with their parameters. In particular, if string-append/shared is applied to just one argument, it may return exactly that argument, whereas string-append is required to allocate a fresh string.