Taking your suggestion though, I just recorded a macro using the recorder and that worked perfect. The second line was the action mentioned.

    <Macro name="Sort and Delete" Ctrl="no" Alt="no" Shift="yes" Key="112">
        <Action type="2" message="0" wParam="42059" lParam="0" sParam="" />
        <Action type="2" message="0" wParam="42077" lParam="0" sParam="" />
    </Macro>

Just if anyone runs into the same difficulty, as this command I could not find to map. Thanks to @Alan-Kilborn for the solution.

Using Notepad++ 7.7.1 I was able to custom-add a macro to my shortcuts.xml like so:

    <Macro name="test" Ctrl="no" Alt="no" Shift="no" Key="0">
        <Action type="2" message="0" wParam="42077" lParam="0" sParam="" />
    </Macro>

I didn’t bind it to a keycombo, but when I ran it from the Macro menu, it worked just fine to delete the consecutive duplicate lines. Thus, it should have no problem when given a keycombo and then run from that keycombo.

I see that you defined your try at it a bit differently–why don’t you give my way a try? Note: Be sure to put it in the Macros section.

For those interested, it can be downloaded here:
https://github.com/peter-frentrup/NppMenuSearch

It’s a single click workaround but unfortunately doesn’t solve the problem with mapping a keyboard shortcut to the remove duplicate lines internal command.

Any ideas?

I’m confident I went about it the right way, however it seems like a bug or inherent limitation within the notepad++ software that is preventing me from replacing the ids from other internal commands I successfully created from within shortcut mapper with the correct internal command ID (# 42077) for Remove Consecutive Duplicate Lines.

I was so close too but made a sacrifice to the dev time bandit for curiosity’s sake (and perhaps a touch of my OCD)…

Does anyone have suggestions on how to accomplish this?

Thanks in advance

It seems as if you are well on your way to a solution for yourself.

Also I found that shortcut.xml can assign custom internal commands to keyboard shortcuts which I’m currently experimenting making changes to by using the Shortcut mapper and then restarting Notepad++ to save changes.

The “Remove Consecutive Duplicate Lines” menu command is listed as ID # 42077 in https://github.com/notepad-plus-plus/notepad-plus-plus/blob/master/PowerEditor/installer/nativeLang/english.xml

And also as “IDM_EDIT_REMOVE_DUP_LINES” in https://github.com/notepad-plus-plus/notepad-plus-plus/blob/master/PowerEditor/src/menuCmdID.h

I also tried the NppExec plugin to no avail as posted here - https://stackoverflow.com/questions/34609009/notepad-adding-a-new-shortcut-for-an-existing-command

P.S.
Sorry for the redundant post; I can’t delete the old one above with typos and grammatical errors…

Also I found that shortcut.xml can assign custom internal commands to keyboard shortcuts.

However, it doesn’t appear as though the dedupe command I want has an ID in the table here: https://github.com/notepad-plus-plus/notepad-plus-plus/blob/master/PowerEditor/installer/nativeLang/english_customizable.xml

I’m AFK right now (well, my keyboard attached to a computer that has Notepad++) so I can’t test it, but you might consider recording a macro consisting of a single command and then typing that to your desired keycombo, as a workaround.