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d8e5bc07aa
Add function util_concatf() that appends the result of a format string
expansion to the end of an existing string while taking care of the
required memory allocations.
Usage example:
char *str = NULL;
util_concatf(&str, "list:");
for (int i = 1; i <= 3; i++)
util_concatf(&str, "%spart%d", (i > 1 ? "," : ""), i);
printf("%s\n", str); /* list:part1,part2,part3 */
Reviewed-by: Jan Höppner <hoeppner@linux.ibm.com>
Signed-off-by: Peter Oberparleiter <oberpar@linux.ibm.com>
Signed-off-by: Steffen Eiden <seiden@linux.ibm.com>