Re: MinGW binary installer available

From: Johannes Sixt <j.sixt@eudaptics.com>
Date: Feb 8, 2007, 08:09 UTC
Message-ID: <45CADAAA.74058D21@eudaptics.com>
In-Reply-To: <45C9EB54.3040406@xs4all.nl>

Han-Wen Nienhuys wrote:

> Indeed: for now, this is intended for people clueful enough to install
> bash and perl on their own.  Adding bash itself should be easy, but
> I have no idea how to make cmd open the scripts with bash automatically.

I've thought about renaming git-commit to git-commit.cmd and add this preamble:

@echo off rem () { :; } ; : \ sh %0 %1 %2 %3 %4 %5 %6 %7 %8 %9 rem ; : \ exit /B %ERRORLEVEL%

in place of the usual "#!/bin/sh". It requires you to have a command named @echo.exe in the path that is a noop. Also, it is limited to 9 command line arguments.

What a hack! (*)

-- Hannes

(*) Here's how it works:
- cmd.exe will ignore all but the sh and exit lines, effectively
invoking the script under bash and exiting with bash's exit code.
- Bash will execute @echo, define a function named rem, ignore the sh
and exit lines because they are continuations of the : noop on the
previous line. It will also run the second rem, but it is a noop, too.