An utility for MSYS2/Cygwin which allows to execute POSIX shell scripts transparently.
MSYS comes with its own port of bash which is able to execute shell scripts. However, unlike ported binaries, no POSIX shell script can be executed directly from the native Windows command-line interpretator cmd (or from other Windows programs, such as FAR, etc.).
It's quite easy to come up with the "wrapper script" solution, for example:
@rem shebang.cmd
@env MSYSTEM=MINGW64 %~n0 %*
will execute any POSIX script (or native binary) called "shebang" found on PATH. However,
any (incorrectly ported) application will fail if it tries to execute such script by
spawning it directly, which is normal for the POSIX world, but not for Windows, where one
needs to provide an explicit command, such as cmd /C shebang.cmd. This is where
shebang comes to help.
Shebang was successfully built and tested with GCC/MinGW 14.1.0.
Simply invoke make to compile.
Rename or symlink shebang, so its name matches the script you want and put it on PATH. Now upon execution shebang will find the script on PATH, parse its first (aka "shebang") line, and execute it with own command-line arguments.