Description

In some operating system (especially Windows) allows people to browse the file-system right-click on a file and either 'open with application' or 'open with running instance of Application'. The latter will open the file in a an already running instance of Padre.

The same will happen if you launch padre again when it is already running.

Related: #117, #313, #1138

Test

1. start Padre
2. "Tools" -> "Preferences": enable "Open Files in existing Padre"
3. restart Padre
4. type padre SOME_FILE in the command line (should open in the same instance of Padre)
5. "Tools" -> "Preferences": disable "Open Files in existing Padre"
6. restart Padre
7. type padre SOME_FILE in the command line (should start a new instance of Padre)

TODO