BASE64_IMAP
elen = base64_encode(cryptbuf, len, p, false, BASE64_IMAP);
tname->name, false, BASE64_IMAP);
req->r_path2, false, BASE64_IMAP);
declen = base64_decode(encsym, enclen, sym, false, BASE64_IMAP);
[BASE64_IMAP] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+,",
[BASE64_IMAP] = BASE64_REV_INIT('+', ',')
n_imap = base64_encode(sample1, sizeof(sample1), imap_buf, false, BASE64_IMAP);
m = base64_decode(imap_buf, n_imap, back, false, BASE64_IMAP);
m = base64_decode(bad, strlen(bad), tmp, false, BASE64_IMAP);