GVim wrapper for git repo-specific servers

vi-wrapper.sh

#!/bin/bash
# This wrapper is in response to Neils de Vos' blog post 
# "Changing vim settings depending on the git repository containing the file"
# (http://blog.nixpanic.net/2013/01/changing-vim-settings-depending-on-git.html)
#
# Since different repos have different coding standards, I want to be able to use Neils' method
# of selectively setting editor options based on file location. This is made simpler if I don't
# need to worry about making these settings buffer local. So, for example, if I only want to trim
# trailing whitespace and expand tabs in some some repos, I can have the following in my ~/.vimrc
#  fun! <SID>ExpandTabs()
#   let l = line(".")
#   let c = col(".")
#   %!expand
#   call cursor(l,c)
# endfun
#
# let git_noexpandtabs = system("git config --get vim.settings")
# if strlen(git_noexpandtabs)
#   autocmd FileType c,cpp,java,php,python,xml,make autocmd BufWritePre <buffer> :%s/\s\+$//e
#   autocmd FileType c,cpp,java,php,xpython,ml      autocmd BufWritePre <buffer> :call <SID>ExpandTabs()
# endif

gvim=${HOME}/bin/gvim
[ -x $gvim ] || gvim="gvim"

if [ "$1" != "-r" ]; then # I could do a more exhaustive job of handling gvim options
                          # but on the rare occassion when I want to use something
                          # other than -r, I can always invoke "gvim" directly.
  if [ -n "$1" ]; then
    for file in "$@"; do
      pushd `dirname $file` > /dev/null
      REPO=$(git rev-parse --show-toplevel 2>/dev/null)
      [ -n "$REPO" ] && REPO=$(basename $REPO)
      popd > /dev/null
      remote="--remote-silent $file"

      if [ -n "$REPO" ]; then
        echo "Using GVIM servername $REPO for $file" >&2 # This might get annoying
        $gvim --servername $REPO $remote
      else
        $gvim $file
      fi
    done
  else
    exec $gvim
  fi
else
  exec $gvim "$@"
fi