gpg: Add option --with-subkey-fingerprint.

* g10/gpg.c (oWithSubkeyFingerprint): New.
(opts): Add --with-subkey-fingerprint[s].
(main): Set that option.
* g10/options.h (struct opt): Add 'with_subkey_fingerprint'.
* g10/keylist.c (list_keyblock_print): Print subkey fingerprint.
(print_fingerprint): Tweak printing to use compact format if
desirable.

Signed-off-by: Werner Koch <wk@gnupg.org>

doc/gpg.texi

@@ -342,7 +342,8 @@ fingerprints. This is the same output as @option{--list-keys} but with
 the additional output of a line with the fingerprint. May also be
 combined with @option{--list-sigs} or @option{--check-sigs}.  If this
 command is given twice, the fingerprints of all secondary keys are
-listed too.
+listed too.  This command also forces pretty printing of fingerprints
+if the keyid format has been set to "none".
 
 @item --list-packets
 @opindex list-packets
@@ -2276,6 +2277,14 @@ allow to convey suitable information for elliptic curves.
 Same as the command @option{--fingerprint} but changes only the format
 of the output and may be used together with another command.
 
+@item --with-subkey-fingerprint
+@opindex with-subkey-fingerprint
+If a fingerprint is printed for the primary key, this option forces
+printing of the fingerprint for all subkeys.  This could also be
+achieved by using the @option{--with-fingerprint} twice but by using
+this option along with keyid-format "none" a compact fingerprint is
+printed.
+
 @item --with-icao-spelling
 @opindex with-icao-spelling
 Print the ICAO spelling of the fingerprint in addition to the hex digits.

g10/gpg.c

@@ -182,6 +182,7 @@ enum cmd_and_opt_values
     oNoAskCertLevel,
     oFingerprint,
     oWithFingerprint,
+    oWithSubkeyFingerprint,
     oWithICAOSpelling,
     oWithKeygrip,
     oWithSecret,
@@ -720,6 +721,8 @@ static ARGPARSE_OPTS opts[] = {
   ARGPARSE_s_n (oUtf8Strings,      "utf8-strings", "@"),
   ARGPARSE_s_n (oNoUtf8Strings, "no-utf8-strings", "@"),
   ARGPARSE_s_n (oWithFingerprint, "with-fingerprint", "@"),
+  ARGPARSE_s_n (oWithSubkeyFingerprint, "with-subkey-fingerprint", "@"),
+  ARGPARSE_s_n (oWithSubkeyFingerprint, "with-subkey-fingerprints", "@"),
   ARGPARSE_s_n (oWithICAOSpelling, "with-icao-spelling", "@"),
   ARGPARSE_s_n (oWithKeygrip,     "with-keygrip", "@"),
   ARGPARSE_s_n (oWithSecret,      "with-secret", "@"),
@@ -2566,6 +2569,9 @@ main (int argc, char **argv)
             opt.with_fingerprint = 1;
             opt.fingerprint++;
             break;
+	  case oWithSubkeyFingerprint:
+            opt.with_subkey_fingerprint = 1;
+            break;
 	  case oWithICAOSpelling:
             opt.with_icao_spelling = 1;
             break;

g10/keyid.c

@@ -384,6 +384,9 @@ keystrlen(void)
 
   switch(format)
     {
+    case KF_NONE:
+      return 0;
+
     case KF_SHORT:
       return 8;
 

g10/keylist.c

@@ -1168,7 +1168,7 @@ list_keyblock_print (ctrl_t ctrl, kbnode_t keyblock, int secret, int fpr,
 
           /* Print the "sub" line.  */
           print_key_line (es_stdout, pk2, secret);
-	  if (fpr > 1)
+	  if (fpr > 1 || opt.with_subkey_fingerprint)
             {
               print_fingerprint (NULL, pk2, 0);
               if (serialno)
@@ -1821,6 +1821,10 @@ print_fingerprint (estream_t override_fp, PKT_public_key *pk, int mode)
       compact = 1;
     }
 
+  if (!opt.fingerprint && !opt.with_fingerprint
+      && opt.with_subkey_fingerprint && opt.keyid_format == KF_NONE)
+    compact = 1;
+
   if (pk->main_keyid[0] == pk->keyid[0]
       && pk->main_keyid[1] == pk->keyid[1])
     primary = 1;
@@ -1873,7 +1877,13 @@ print_fingerprint (estream_t override_fp, PKT_public_key *pk, int mode)
   else
     {
       fp = override_fp? override_fp : es_stdout;
-      text = _("      Key fingerprint =");
+      if (opt.keyid_format == KF_NONE)
+        {
+          text = "     ";  /* To indent ICAO spelling.  */
+          compact = 1;
+        }
+      else
+        text = _("      Key fingerprint =");
     }
 
   hexfingerprint (pk, hexfpr, sizeof hexfpr);
@@ -1881,7 +1891,7 @@ print_fingerprint (estream_t override_fp, PKT_public_key *pk, int mode)
     {
       es_fprintf (fp, "fpr:::::::::%s:", hexfpr);
     }
-  else if (compact)
+  else if (compact && !opt.fingerprint && !opt.with_fingerprint)
     {
       tty_fprintf (fp, "%*s%s", 6, "", hexfpr);
     }
@@ -1889,7 +1899,10 @@ print_fingerprint (estream_t override_fp, PKT_public_key *pk, int mode)
     {
       char fmtfpr[MAX_FORMATTED_FINGERPRINT_LEN + 1];
       format_hexfingerprint (hexfpr, fmtfpr, sizeof fmtfpr);
-      tty_fprintf (fp, "%s %s", text, fmtfpr);
+      if (compact)
+        tty_fprintf (fp, "%*s%s", 6, "", fmtfpr);
+      else
+        tty_fprintf (fp, "%s %s", text, fmtfpr);
     }
   tty_fprintf (fp, "\n");
   if (!with_colons && with_icao)

g10/options.h

@@ -71,6 +71,7 @@ struct
   int with_key_data;
   int with_icao_spelling; /* Print ICAO spelling with fingerprints.  */
   int with_fingerprint; /* Option --with-fingerprint active.  */
+  int with_subkey_fingerprint; /* Option --with-subkey-fingerprint active.  */
   int with_keygrip;     /* Option --with-keygrip active.  */
   int with_secret;      /* Option --with-secret active.  */
   int with_wkd_hash;    /* Option --with-wkd-hash.  */