This addon is taken from dev@sergiy.net at https://chrome.google.com/webstore/detail/open-link-in-same-tab-pop/jmphljmgnagblkombahigniilhnbadca
I modified it because some Multimessenger Addons don't load from a "chrome://extensions/" URL anymore. As result they where captured by the original plugin and converted to a Tab.
This causes the messengers to lose the ability to create their own taskbar icon for faster and easier access.
Because I coudn't find a public github repository of the original extension, to file a merge request, i created a new one.
The updated version is able to switch between blacklist and whitelist mode.
The default setting is the blacklist mode. All Popups are converted to Tabs.
If you want to disable that behavior disable the switch on that specific site.
You can use the options to switch to the whitelist mode.
All new popups are untouched until specifically enabled.
Page whitelisted
The white/black listing only works with the target URL. Not the URL of the page which opens the new popup window.
Page www.foo.com/popup.html opens a new window with the url www.foo.com/bar.html
Switchting options at www.foo.com/popup.html will not result in changing the behavior of www.foo.com/bar.html
You need to toggel settings at www.foo.com/bar.html to have the desired effect.