+ /* if there is an apply function, check what it has to say */
+ if (do_apply && htab->apply != NULL) {
+ debug("searching before calling cb function"
+ " for %s\n", name);
+ /*
+ * Search for variable in existing env, so to pass
+ * its previous value to the apply callback
+ */
+ hsearch_r(e, FIND, &rv, htab);
+ debug("previous value was %s\n", rv ? rv->data : "");
+ if (htab->apply(name, rv ? rv->data : NULL,
+ value, flag)) {
+ debug("callback function refused to set"
+ " variable %s, skipping it!\n", name);
+ continue;
+ }
+ }
+