To unload a plugin, use PLUGIN /U with the plugin's internal name, not its filename. So: plugin /u 4utils

Are you asking me why Vincent doesn't use PATH /N? Force of habit, maybe. Or to save vertical space in his posts.

CreateToolhelp32Snapshot() ?

Just to clarify: Are you saying that you have changed COMSPEC to point to TCC? Or are you merely observing that when you are running TCC, COMSPEC points to TCC? And that WinMerge inherits the troublesome value from TCC?

Well, the Start/Run dialog checks it, anyway.

I do see the console window briefly. It doesn't bother me, but your mileage may vary.

You can also start /unelevated /tab

I have a plugin that does this — though I no longer remember why — and I can confirm that START /UNELEVATED causes OpenProcessToken(GetCurrentProcess(),...) to fail. Does this constitute an actual problem? I really don't know.

I notice that ASSOC returned a filetype of TCMD.Batch, but the filetype you are using in the second command is tcc.batch.

I'm amazed that that's legal!

I am trying to reproduce this behavior: C:\Test>which 7z 7z is an external : C:\Bin\Util\7z.exe C:\Test>type test1.btm @echo off setlocal set USE_7Z=1 set TO_UNZIP=c:\test\test.7z call test2.btm Foo Bar Fum if %USE_7Z eq 1 ( 7z x -aoa "%TO_UNZIP" ) call test2.btm Foo Bar Fum endlocal...

How are you calling 7z.exe? Are you using the full pathname, or a path search? Or maybe an alias?

Is it only batch files, or is there maybe an alias in there somewhere?

No, I've never tried those. They might be an idea for v2.0. Or then again maybe not, because.... Yes, and I make it available via a variable. Once in Windows Terminal, always in Windows Terminal, but: the handle can change. Tabs can be split off to a new window, or moved from one WT...

Brute force. I scan for new TCC popups and dialogs eight times a second with EnumThreadWindows(). When a new one appears, force it to the front (dialogs sometimes appear under Take Command) and give it focus. If it's offscreen (Console2 does this sometimes), move it where it's visible. When...