emacs -nw standard input is not a tty on ConEmu and Mintty

Question

On my Windows XP machine I use Emacs-25.2.1. During web app development I use ConEmu version 191012 and I need to use Emacs at the command line. When I enter emacs -nw on ConEmu, it says

emacs: standard input is not a tty

This error occurs on MSYS2's default terminal Mintty which is invoked by cmd.exe /A /Q /K C:\msys32\mingw32_shell.bat, too but it doesn't occur on Windows' default CMD.exe and PowerShell so I guess it may have something to do with the Environment Variables. Several months ago, the ConEmu had a problem where the arrow keys and backspace were not working, (roughly described here) and I remember fixing it by changing or deleting an environment variable. This standard input is not a tty problem seemed to pop up roughly around the same after I fixed that problem but I'm not 100% sure of this.

What should I do to fix this problem?

Answer 1

It was the erroneous startup script of ConEmu named Bash::Msys2-32 which was confusing the emacs -nw It was (the erroneous one)

set CHERE_INVOKING=1 & set "PATH=%ConEmuDrive%\msys32\usr\bin;%PATH%" 
& %ConEmuBaseDirShort%\conemu-msys2-32.exe 
-new_console:p %ConEmuDrive%\msys32\usr\bin\bash.exe
 --login -i 
-new_console:C:"%ConEmuDrive%\msys32\msys2.ico"

It should have been like (the correct one)

set CHERE_INVOKING=1 & %ConEmuDrive%\msys32\usr\bin\bash.exe 
--login -i -new_console:C:"%ConEmuDrive%\msys32\msys2.ico" 
-new_console:d:"C:\Documents and Settings\lenovo"