1 files changed, 28 insertions, 0 deletions
diff --git a/src/join.c b/src/join.c
new file mode 100644
index 0000000..1461ace
--- /dev/null
+++ b/src/join.c
@@ -0,0 +1,28 @@
+
+/* note: this routine frees its arguments! */
+char **
+my_join (char **np1, char **np2) {
+    int lth1, lth2;
+    char **p, **q, **np;
+
+    if (np1 == NULL)
+	 return np2;
+    if (np2 == NULL)
+	 return np1;
+    lth1 = lth2 = 0;
+    for (p = np1; *p; p++)
+	 lth1++;
+    for (p = np2; *p; p++)
+	 lth2++;
+    p = np = (char **) my_malloc((lth1+lth2+1)*sizeof(*np));
+    q = np1;
+    while(*q)
+	 *p++ = *q++;
+    q = np2;
+    while(*q)
+	 *p++ = *q++;
+    *p = 0;
+    free(np1);
+    free(np2);
+    return np;
+}