diff --git a/.local/bin/git-ci b/.local/bin/git-ci
deleted file mode 100755
index d8b30e0..0000000
--- a/.local/bin/git-ci
+++ /dev/null
@@ -1,10 +0,0 @@
-#!/bin/bash
-if [ $# -eq 0 ]; then
-  git commit -v
-else
-  if [ "$1" = "--amend" ]; then
-    git commit -v --amend
-  else
-			git commit -m "$*"
-  fi
-fi
diff --git a/.local/bin/git-ci b/.local/bin/git-ci
new file mode 120000
index 0000000..d5642e8
--- /dev/null
+++ b/.local/bin/git-ci
@@ -0,0 +1 @@
+/Users/syui/dotfiles/.local/bin/git-ci
\ No newline at end of file
diff --git a/.local/bin/git-orphan b/.local/bin/git-orphan
deleted file mode 100755
index baf78ed..0000000
--- a/.local/bin/git-orphan
+++ /dev/null
@@ -1,7 +0,0 @@
-#!/bin/bash
-git checkout --orphan temp
-git add -A
-git commit -m "init"
-git branch -D main
-git branch -m temp main
-git push -f origin main
diff --git a/.local/bin/git-orphan b/.local/bin/git-orphan
new file mode 120000
index 0000000..7135546
--- /dev/null
+++ b/.local/bin/git-orphan
@@ -0,0 +1 @@
+/Users/syui/dotfiles/.local/bin/git-orphan
\ No newline at end of file
diff --git a/.local/bin/vren b/.local/bin/vren
deleted file mode 100755
index 1667280..0000000
--- a/.local/bin/vren
+++ /dev/null
@@ -1,65 +0,0 @@
-#!/bin/zsh
-# vren - rename files with vim
-# usage: vren [dir]
-
-dir="${1:-.}"
-cd "$dir" || exit 1
-
-# git init if no .git
-has_git=0
-if [ -d .git ]; then
-  has_git=1
-else
-  git init -q
-  git add -A
-  git commit -q -m "before rename"
-fi
-
-# list files
-old=$(mktemp)
-new=$(mktemp)
-ls -1 > "$old"
-cp "$old" "$new"
-
-# edit
-vim "$new"
-
-# check
-old_count=$(wc -l < "$old")
-new_count=$(wc -l < "$new")
-if [ "$old_count" -ne "$new_count" ]; then
-  echo "error: line count mismatch ($old_count -> $new_count)"
-  rm "$old" "$new"
-  exit 1
-fi
-
-# diff
-changes=0
-paste "$old" "$new" | while IFS=$'\t' read -r o n; do
-  [ "$o" != "$n" ] && echo "  $o -> $n" && changes=$((changes+1))
-done
-
-if ! diff -q "$old" "$new" >/dev/null 2>&1; then
-  echo ""
-  printf "apply? (y/n): "
-  read -q ans
-  echo ""
-  if [ "$ans" = "y" ]; then
-    paste "$old" "$new" | while IFS=$'\t' read -r o n; do
-      [ "$o" != "$n" ] && mv -- "$o" "$n"
-    done
-    echo "done"
-    # restore point
-    if [ "$has_git" -eq 0 ]; then
-      git add -A
-      git commit -q -m "after rename"
-      echo "restore: git log / git checkout HEAD~1 -- ."
-    fi
-  else
-    echo "cancelled"
-  fi
-else
-  echo "no changes"
-fi
-
-rm "$old" "$new"
diff --git a/.local/bin/vren b/.local/bin/vren
new file mode 120000
index 0000000..4877c80
--- /dev/null
+++ b/.local/bin/vren
@@ -0,0 +1 @@
+/Users/syui/dotfiles/.local/bin/vren
\ No newline at end of file
diff --git a/.vimrc b/.vimrc
index c9a0649..3ef1e99 100644
--- a/.vimrc
+++ b/.vimrc
@@ -33,10 +33,6 @@ inoremap <C-j> <Esc>
 nnoremap Q :q!<CR>
 vnoremap v V
 
-call plug#begin('~/.vim/plugged')
-Plug 'github/copilot.vim'
-call plug#end()
-
 syntax on
 filetype plugin indent on
 au BufReadPost * if line("'\"") > 0 && line("'\"") <= line("$") | exe "normal! g`\"" | endif
diff --git a/install.zsh b/install.zsh
index 82d20f8..ed75aaf 100755
--- a/install.zsh
+++ b/install.zsh
@@ -56,13 +56,11 @@ done
 # create vim undo dir
 mkdir -p "$HOME/.vim/undo"
 
-# install vim-plug
-if [ ! -f "$HOME/.vim/autoload/plug.vim" ]; then
-  curl -fLo "$HOME/.vim/autoload/plug.vim" --create-dirs \
-    https://raw.githubusercontent.com/junegunn/vim-plug/master/plug.vim
-  echo "vim-plug: installed"
-  vim +PlugInstall +qall 2>/dev/null
-  echo "vim plugins: installed"
+# install copilot.vim
+copilot_dir="$HOME/.vim/pack/github/start/copilot.vim"
+if [ ! -d "$copilot_dir" ]; then
+  git clone https://github.com/github/copilot.vim.git "$copilot_dir" 2>/dev/null
+  echo "copilot.vim: installed"
 fi
 
 # install font