Improve key encryption/decryption using GPG key.

Decryption/Encryption works without these improvment, however, there
are needed in order to have clean key (without empty line).

Moreover, tests showed not doing cause troubles when changing the GPG key
used to encrypt a tomb key.

tomb

@@ -947,14 +947,24 @@ gpg_decrypt() {
     # fix for gpg 1.4.11 where the --status-* options don't work ;^/
     local gpgver=$(gpg --version --no-permission-warning | awk '/^gpg/ {print $3}')
     local gpgpass="$1\n$TOMBKEY"
-    local gpgstatus
-    local tmpres
+    local tmpres ret
+    typeset -a gpgopt
+    gpgpopt=(--passphrase-fd 0)
 
+    { option_is_set -r } && {
+        local gpgkey=`option_value -r`
+        _verbose "using $gpgkey to decrypt a tomb key"
+        { ! is_valid_recipients "$gpgkey" } && {
+             _failure "You set an invalid GPG ID."
+        }
+        gpgpass="$TOMBKEY"
+        gpgpopt=()
+    }
+    
     [[ $gpgver == "1.4.11" ]] && {
         _verbose "GnuPG is version 1.4.11 - adopting status fix."
-
         TOMBSECRET=`print - "$gpgpass" | \
-            gpg --batch --passphrase-fd 0 --no-tty --no-options`
+            gpg --batch ${gpgpopt[@]} --no-tty --no-options`
         ret=$?
         unset gpgpass
         return $ret
@@ -963,12 +973,10 @@ gpg_decrypt() {
     _tmp_create
     tmpres=$TOMBTMP
     TOMBSECRET=`print - "$gpgpass" | \
-        gpg --batch --passphrase-fd 0 --no-tty --no-options \
+        gpg --batch ${gpgpopt[@]} --no-tty --no-options \
             --status-fd 2 --no-mdc-warning --no-permission-warning \
             --no-secmem-warning 2> $tmpres`
-
     unset gpgpass
-
     ret=1
     for i in ${(f)"$(cat $tmpres)"}; do
         _verbose "$i"
@@ -1158,11 +1166,24 @@ gen_key() {
     # -o is the --cipher-algo to use (string taken by GnuPG)
     local algopt="`option_value -o`"
     local algo="${algopt:-AES256}"
+    local gpgpass opt
+    typeset -a gpgopt
     # here user is prompted for key password
     tombpass=""
     tombpasstmp=""
 
-    { ! option_is_set -r } && {
+    { option_is_set -r } && {
+        local gpgkey=`option_value -r`
+        _verbose "using $gpgkey to encrypt a tomb key"
+        { is_valid_recipients "$gpgkey" } || {
+            _failure "You set an invalid GPG ID."
+        }
+        
+        # Set gpg inputs and options
+        gpgpass="$TOMBSECRET"
+        gpgopt=(--encrypt --recipient "$gpgkey")
+        opt=''
+    } || {
         if [ "$1" = "" ]; then
             while true; do
                 # 3 tries to write two times a matching password
@@ -1219,26 +1240,20 @@ gen_key() {
             }
         }
         print $header
+
+        # Set gpg inputs and options
+        gpgpass="${tombpass}\n$TOMBSECRET"
+        gpgopt=(--passphrase-fd 0 --symmetric)
+        opt='-n'
     }
 
-	_tmp_create
-	local tmpres=$TOMBTMP
-
-    if option_is_set -r; then
-        local gpgkey="`option_value -r`"
-        { is_valid_recipients "$gpgkey" } || { 
-             _failure "You set an invalid GPG ID."
-        }
-        print -n - "${tombpass}\n$TOMBSECRET" \
-		    | gpg --openpgp --force-mdc --cipher-algo ${algo} --batch \
-		    	  --no-options --no-tty --recipient "$gpgkey" \
-		    	  --status-fd 2 -o - --encrypt --armor 2> $tmpres
-    else
-        print -n - "${tombpass}\n$TOMBSECRET" \
-		    | gpg --openpgp --force-mdc --cipher-algo ${algo} --batch \
-		    	  --no-options --no-tty --passphrase-fd 0 \
-		    	  --status-fd 2 -o - --symmetric --armor 2> $tmpres
-	fi
+    _tmp_create
+    local tmpres=$TOMBTMP
+    print $opt - "$gpgpass" \
+        | gpg --openpgp --force-mdc --cipher-algo ${algo} --batch \
+              --no-options --no-tty ${gpgopt[@]} \
+              --status-fd 2 -o - --armor 2> $tmpres
+    unset gpgpass
     # check result of gpg operation
     for i in ${(f)"$(cat $tmpres)"}; do
         _verbose "$i"