You have to go into Plugins -> PythonScript -> Configuration and add your script to the Menu items area. After that it will appear in the Shortcut Mapper and you can assign a keycombo to it. [A restart of N++ is necessary before the changes to the PS config get picked up by the Shortcut Mapper…]

how do I assign a shortcut to it?

I searched in modify shortcut and script configuration but I couldn’t find it

sorry for not being clear.

No, create a new script and assign the same shortcut which is assigned for
standard open new document action (normally ctrl+n).

This solution, obviously, works only if you open new documents by using the shortcut
but not if you use the mouse.

Does this makes sense to you?

Cheers
Claudia

I did but I get two tabs when I launch npp and the code doesn’t seem to work:

from Npp import editor, notepad, SCINTILLANOTIFICATION, NOTIFICATION, STATUSBARSECTION
import os
from datetime import datetime

def StatusbarSelOverride(args):
modified_time = os.path.getmtime(notepad.getCurrentFilename())
last_modified_date = datetime.fromtimestamp(modified_time)
notepad.setStatusBar(STATUSBARSECTION.DOCTYPE, ‘Mod: {:%d/%m/%Y %H:%M}’.format(last_modified_date))

editor.callback(StatusbarSelOverride, [SCINTILLANOTIFICATION.UPDATEUI])
notepad.callback(StatusbarSelOverride, [NOTIFICATION.READY])

current_index = notepad.getCurrentDocIndex(notepad.getCurrentView())
notepad.new()
new_index = notepad.getCurrentDocIndex(notepad.getCurrentView())
for i in range(current_index+1,new_index):
notepad.menuCommand(44099)

afaik not natively but a python script could look like this

current_index = notepad.getCurrentDocIndex(notepad.getCurrentView())
notepad.new()
new_index = notepad.getCurrentDocIndex(notepad.getCurrentView())
for i in range(current_index+1,new_index): 
    notepad.menuCommand(44099)

from nativeLang.xml

                <Item id="44098" name="Move Tab Forward"/>
                <Item id="44099" name="Move Tab Backward"/>

Cheers
Claudia