+char *
+mp_strjoin(struct mempool *p, char **a, uns n, uns sep)
+{
+ uns sizes[n];
+ uns len = 1;
+ for (uns i=0; i<n; i++)
+ len += sizes[i] = strlen(a[i]);
+ if (sep && n)
+ len += n-1;
+ char *dest = mp_alloc_fast_noalign(p, len);
+ char *d = dest;
+ for (uns i=0; i<n; i++)
+ {
+ if (sep && i)
+ *d++ = sep;
+ memcpy(d, a[i], sizes[i]);
+ d += sizes[i];
+ }
+ *d = 0;
+ return dest;
+}
+