Edit command to launch Emacs

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#!/bin/bash
# To automatically start Emacs in daemon mode if there's no daemon already
# running, set:
#
#     export ALTERNATE_EDITOR=""
#
# Automatically choose how to open Emacs:
# 1. If running in interactive terminal use the same terminal.
# 2. If there's a frame created, use that frame.
# 3. Otherwise create a new frame and use it. 
#

if $(tty -s); then
    # Launch Emacs in the terminal if running in interactive mode
    emacsclient -t -a "$ALTERNATE_EDITOR" $1
else
    # When non-interactive.
    # Detect if there is an Emacs frame already created.
    if $(emacsclient -e "(frame-list)" | grep "<frame emacs@"); then
        # If there's one, use it.
        emacsclient -n -a "$ALTERNATE_EDITOR" $1
    else
        # Otherwise create a new one.
        emacsclient -c -n -a "$ALTERNATE_EDITOR" $1
    fi
fi