Use builtin cd command (#61)

zsh-nvm.plugin.zsh

@@ -13,13 +13,13 @@ _zsh_nvm_has() {
 }
 
 _zsh_nvm_latest_release_tag() {
-  echo $(cd "$NVM_DIR" && git fetch --quiet --tags origin && git describe --abbrev=0 --tags --match "v[0-9]*" $(git rev-list --tags --max-count=1))
+  echo $(builtin cd "$NVM_DIR" && git fetch --quiet --tags origin && git describe --abbrev=0 --tags --match "v[0-9]*" $(git rev-list --tags --max-count=1))
 }
 
 _zsh_nvm_install() {
   echo "Installing nvm..."
   git clone https://github.com/nvm-sh/nvm.git "$NVM_DIR"
-  $(cd "$NVM_DIR" && git checkout --quiet "$(_zsh_nvm_latest_release_tag)")
+  $(builtin cd "$NVM_DIR" && git checkout --quiet "$(_zsh_nvm_latest_release_tag)")
 }
 
 _zsh_nvm_global_binaries() {
@@ -119,7 +119,7 @@ _zsh_nvm_upgrade() {
   fi
 
   # Otherwise use our own
-  local installed_version=$(cd "$NVM_DIR" && git describe --tags)
+  local installed_version=$(builtin cd "$NVM_DIR" && git describe --tags)
   echo "Installed version is $installed_version"
   echo "Checking latest version of nvm..."
   local latest_version=$(_zsh_nvm_latest_release_tag)
@@ -128,7 +128,7 @@ _zsh_nvm_upgrade() {
   else
     echo "Updating to $latest_version..."
     echo "$installed_version" > "$ZSH_NVM_DIR/previous_version"
-    $(cd "$NVM_DIR" && git fetch --quiet && git checkout "$latest_version")
+    $(builtin cd "$NVM_DIR" && git fetch --quiet && git checkout "$latest_version")
     _zsh_nvm_load
   fi
 }
@@ -140,14 +140,14 @@ _zsh_nvm_previous_version() {
 _zsh_nvm_revert() {
   local previous_version="$(_zsh_nvm_previous_version)"
   if [[ -n "$previous_version" ]]; then
-    local installed_version=$(cd "$NVM_DIR" && git describe --tags)
+    local installed_version=$(builtin cd "$NVM_DIR" && git describe --tags)
     if [[ "$installed_version" = "$previous_version" ]]; then
       echo "Already reverted to $installed_version"
       return
     fi
     echo "Installed version is $installed_version"
     echo "Reverting to $previous_version..."
-    $(cd "$NVM_DIR" && git checkout "$previous_version")
+    $(builtin cd "$NVM_DIR" && git checkout "$previous_version")
     _zsh_nvm_load
   else
     echo "No previous version found"