* include/util_varbuf.h: Doxygen tweaks.

 * @param pool the pool to allocate small buffers from and to register the

 *        cleanup with

 * @param vb pointer to the ap_varbuf struct

 * @init_size the initial size of the buffer (see ap_varbuf_grow() for details)

 * @param init_size the initial size of the buffer (see ap_varbuf_grow() for details)

 */

AP_DECLARE(void) ap_varbuf_init(apr_pool_t *pool, struct ap_varbuf *vb,

                                apr_size_t init_size);

/** Perform string substitutions based on regexp match, using an ap_varbuf.

 * This function behaves like ap_pregsub(), but appends to an ap_varbuf

 * instead of allocating the result from a pool.

 * @param vb The ap_varbuf to which the string will be appended

 * @param input An arbitrary string containing $1 through $9.  These are

 *              replaced with the corresponding matched sub-expressions

 * @param source The string that was originally matched to the regex