Multiple 'RCPT TO': Add help text for CLI argument into one more place.

docs/cmdline-opts/mail-rcpt-ignore-invalid.d

@@ -1,5 +1,5 @@
 Long: mail-rcpt-ignore-invalid
-Help: Ignore invalid "RCPT TO" addresses during SMTP conversation
+Help: Ignore invalid recipient addresses during SMTP conversation
 Protocols: SMTP
 Added: 7.70.0
 ---

lib/smtp.c

@@ -925,32 +925,33 @@ static CURLcode smtp_state_rcpt_resp(struct connectdata *conn, int smtpcode,
   bool is_smtp_blocking_err =
     is_smtp_err && !data->set.mail_rcpt_ignore_invalid;
 
-  if (is_smtp_err) {
+  if(is_smtp_err) {
     /* Remembering the last failure which we can report if all "RCPT TO" have
        failed and we cannot proceed. */
     smtp->rcpt_last_error = smtpcode;
 
-    if (is_smtp_blocking_err) {
+    if(is_smtp_blocking_err) {
       failf(data, "RCPT failed: %d", smtpcode);
       result = CURLE_SEND_ERROR;
     }
-  } else {
+  }
+  else {
     /* Some "RCPT TO" have succeeded. */
     smtp->rcpt_had_ok = TRUE;
   }
 
-  if (!is_smtp_blocking_err) {
+  if(!is_smtp_blocking_err) {
     smtp->rcpt = smtp->rcpt->next;
 
     if(smtp->rcpt)
       /* Send the next RCPT TO command */
       result = smtp_perform_rcpt_to(conn);
     else {
       /* We weren't able to issue a successful "RCPT TO" command while going
-         over recipients (potentially multiple). Sending back the last error. */
-      if (!smtp->rcpt_had_ok) {
+         over recipients (potentially multiple). Sending back last error. */
+      if(!smtp->rcpt_had_ok) {
         failf(data, "RCPT failed: %d (last error)", smtp->rcpt_last_error);
-        result = CURLE_SEND_ERROR; 
+        result = CURLE_SEND_ERROR;
       }
       else {
         /* Send the DATA command */

lib/smtp.h

@@ -55,8 +55,8 @@ struct SMTP {
   curl_pp_transfer transfer;
   char *custom;            /* Custom Request */
   struct curl_slist *rcpt; /* Recipient list */
-  bool rcpt_had_ok;        /* Whether any of the "RCPT TO" commands (depends on 
-                              a total number of recipients) succeeded so far */
+  bool rcpt_had_ok;        /* Whether any of "RCPT TO" commands (depends on
+                              total number of recipients) succeeded so far */
   int rcpt_last_error;     /* The last error received for "RCPT TO" command */
   size_t eob;              /* Number of bytes of the EOB (End Of Body) that
                               have been received so far */

src/tool_help.c

@@ -239,6 +239,8 @@ static const struct helptxt helptext[] = {
    "Mail from this address"},
   {"    --mail-rcpt <address>",
    "Mail to this address"},
+  {"    --mail-rcpt-ignore-invalid",
+   "Ignore invalid recipient addresses during SMTP conversation"},
   {"-M, --manual",
    "Display the full manual"},
   {"    --max-filesize <bytes>",