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From: Bengt Larsson <lists DOT cygwin4 AT bengtl DOT net>
To: cygwin AT cygwin DOT com
Subject: Re: Proposal for new cygwin.bat which is independent from install directory
Date: Sat, 27 Aug 2016 15:23:41 +0200
Reply-To: cygwin AT cygwin DOT com
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Christian Franke wrote:
>Bengt Larsson wrote:
>> -----
>> @echo off
>>
>> cd /d "%~dp0\bin"
>>
>> bash --login -i
>> -----
>
>An errorlevel check is IMO mandatory after a cd command. Otherwise 
>another bash in the PATH might be started if the directory does not exist.
>Hmm... therefore it is also better to change the last line to:
>
>   .\bash --login -i
>
>The directory change is intentionally done with two cd commands to avoid 
>possible problems with cmd variants 

>(on Win10 "%~dp0" expands to a path 
>with trailing backslash).

You're right although "%~dp0\subdir" still works (tested on Win10). An
easier way to test exit status is

  cd somedir || exit /b 1

With info for those who may not know the syntax:
-----
@echo off

rem %~dp0 is directory of this batch file

cd /d "%~dp0\bin" || exit /b 1

.\bash --login -i
-----

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