I want to suggest an new argument for the External Tools setup:
$(ClipBoard)
This command would take the current clipboard content
and insert that into the tools command line.
Example
Command: .toolstool.exe
Argument: $(ClipBoard) $(FilenameEx)
If i had copied ” -arg xyz” to the clipboard
and would execute this tool the command line is build like
p:athtoEmEditortoolstool.exe -arg xyz p:athtofile.ext
.