diff --git a/examples/v2/config.cmdcomp.toml b/examples/v2/config.cmdcomp.toml
index 37b8767..5013793 100644
--- a/examples/v2/config.cmdcomp.toml
+++ b/examples/v2/config.cmdcomp.toml
@@ -81,6 +81,11 @@ target = ["git"]
 type = "select"
 options = ["dev", "prd"]
 
+[root.subcommands.gcs]
+type = "delegate"
+description = "gcs command."
+target = ["gcloud", "storage"]
+
 [root.subcommands.test]
 description = "test command."
 
diff --git a/examples/v2/config.cmdcomp.yaml b/examples/v2/config.cmdcomp.yaml
index 311df95..50f8068 100644
--- a/examples/v2/config.cmdcomp.yaml
+++ b/examples/v2/config.cmdcomp.yaml
@@ -71,6 +71,10 @@ root:
         --envname:
           - dev
           - prd
+    gcs:
+      type: delegate
+      description: gcs command.
+      target: [gcloud, storage]
     test:
       description: "test command."
       subcommands:
diff --git a/examples/v2/output.bash b/examples/v2/output.bash
index 41bb846..c0edf6a 100644
--- a/examples/v2/output.bash
+++ b/examples/v2/output.bash
@@ -45,6 +45,11 @@ _cliname() {
         cword=$(( cword + opts_cword + 1 ))
         ;;
 
+      _cliname,gcs)
+        cmd="_cliname_gcs"
+        cword=$(( cword + opts_cword + 1 ))
+        ;;
+
       _cliname,test)
         cmd="_cliname_test"
         cword=$(( cword + opts_cword + 1 ))
@@ -125,7 +130,7 @@ _cliname() {
         COMPREPLY=( $(compgen -W "${opts}" -- "${COMP_WORDS[COMP_CWORD]}") )
         return 0
       elif [ $cword -eq $COMP_CWORD ] ; then
-        opts="list ls cd scripts git test"
+        opts="list ls cd scripts git gcs test"
         COMPREPLY=( $(compgen -W "${opts}" -- "${COMP_WORDS[COMP_CWORD]}") )
         return 0
       fi
@@ -302,6 +307,23 @@ _cliname() {
       return 0
       ;;
 
+    _cliname_gcs)
+      cmd_cword=$cword
+      while [ $cword -lt $COMP_CWORD ] ; do
+        cword=$(( cword + 1 ))
+      done
+
+      local word=${COMP_WORDS[@]::$cmd_cword}
+      COMP_POINT=$((COMP_POINT + 14 - ${#word} ))
+      COMP_LINE="gcloud storage ${COMP_WORDS[@]:$cmd_cword}"
+      COMP_WORDS=($COMP_LINE)
+      COMP_CWORD=$(( ${#COMP_WORDS[@]} - 1 ))
+      (( COMP_CWORD < 1 )) && COMP_CWORD=1
+
+      type "_command_offset" > /dev/null 2>&1 && _command_offset 0
+      return 0
+      ;;
+
     _cliname_test)
       cmd_cword=$cword
       while [ $cword -lt $COMP_CWORD ] ; do
diff --git a/examples/v2/output.zsh b/examples/v2/output.zsh
index 1da9f01..918e975 100644
--- a/examples/v2/output.zsh
+++ b/examples/v2/output.zsh
@@ -18,6 +18,7 @@ _cliname() {
         cd'[cd project directory.]'
         scripts'[operate scripts.]'
         git'[git command.]'
+        gcs'[gcs command.]'
         test'[test command.]'
       )
 
@@ -85,6 +86,12 @@ _cliname() {
               _normal
               ;;
 
+            gcs)
+              words=(gcloud storage "${words[2, -1]}")
+              ((CURRENT += 1))
+              _normal
+              ;;
+
             test)
               local -a __test_subcmds
               __test_subcmds=(