Help needed for Extension "Append to clipboard"

[bhishanpdl]

I tried to create a new extension to append currently selected text to the old clipboard content.

I have tried this, but it is not working.
I am sure I am missing something silly, but it's not working for a while and greatly appreciate the help.

OR
If someone creates this extension and sends pull request here in this repo, it would be a great extension for everybody.

My output

# suppose we have two lines one and two
# we copy line 'one' using 'copy' extension
# we copy line 'two' using 'this new extension'
one 
two 


Now, after using 'this new extension' I get four lines automatically pasted:
one
one
one
two

But I want the lines unchanged, but clipboard has appended text with two lines 'one' and 'two'.

File: Config.plist

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
	<key>Actions</key>
	<array>
		<dict>
			<key>After</key>
			<string>paste-result</string>
			<key>Requirements</key>
			<array>
				<string>paste</string>
			</array>
			<key>Script Interpreter</key>
			<string>/usr/bin/python</string>
			<key>Shell Script File</key>
			<string>copy_append.py</string>
			<key>Title</key>
			<string>Copy Append</string>
			<key>Image File</key>
			<string>clipboard.png</string>
		</dict>
	</array>
	<key>Extension Description</key>
	<string>Copy and Append to Clipboard</string>
	<key>Extension Identifier</key>
	<string>com.poudel.popclip.extension.copy_append</string>
	<key>Extension Name</key>
	<string>CopyAppend</string>
	<key>Version</key>
	<integer>1</integer>
	<key>Credits</key>
	<array>
		<dict>
			<key>Name</key>
			<string>Bhishan Poudel</string>
			<key>Link</key>
			<string></string>
		</dict>
	</array>
</dict>
</plist>

File: copy_append.py

import os
import subprocess

old = subprocess.check_output('pbpaste')
old = old.decode('utf-8')

new = os.getenv('POPCLIP_TEXT')
if new:
    new = new.decode('utf-8')

out = old + '\n' + new
cmd = 'echo ' + out + ' | pbcopy'

temp = os.system(cmd)
print(out)

[msubel]

I'm not sure why it's not working in Python but if you use switch to bash, you just need these 2 lines:

cboard=$(pbpaste)
echo "$cboard\n$POPCLIP_TEXT"

[lordlycastle]

There's already an official one: https://pilotmoon.com/popclip/extensions/page/Append