Re: git mv messed up file mapping if folders contain identical files

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On Wed, Feb 24, 2016 at 04:38:11PM -0700, Bill Okara wrote:
> Hi,
> 
> I noticed the following 'git mv' issue with:
> git version 2.6.4
> 
> 
> If there are identical files in different subfolders, 'git mv' the
> root folder (and/or each file individually) will mess up the file path
> mapping. that is, if having identical 'content.txt' file under
> gitmvtest
>     |--demo/content.txt
>     |--dev/content.txt
>     |--prod/content.txt
> 
> after doing the "git mv gitmvtest/resources
> gitmvtest/src/main/resources", the 'git status' will show:
> 
> renamed:    gitmvtest/resources/demo/content.txt ->
> gitmvtest/src/main/resources/demo/content.txt
> renamed:    gitmvtest/resources/prod/content.txt ->
> gitmvtest/src/main/resources/dev/content.txt            <== NOTE:
> wrongly mapped the prod/content.txt to dev/content.txt
> renamed:    gitmvtest/resources/dev/content.txt ->
> gitmvtest/src/main/resources/prod/content.txt            <== NOTE:
> wrongly mapped the dev/content.txt to prod/content.txt
> 
> I tried running 'git mv' on each file individually, got the same problem:
> > git mv gitmvtest/resources/demo/content.txt gitmvtest/src/main/resources/demo/content.txt
> > git mv gitmvtest/resources/dev/content.txt gitmvtest/src/main/resources/dev/content.txt
> > git mv gitmvtest/resources/prod/content.txt gitmvtest/src/main/resources/prod/content.txt
> 
> > git status
> renamed:    gitmvtest/resources/demo/content.txt ->
> gitmvtest/src/main/resources/demo/content.txt
> renamed:    gitmvtest/resources/prod/content.txt ->
> gitmvtest/src/main/resources/dev/content.txt          <== WRONG
> renamed:    gitmvtest/resources/dev/content.txt ->
> gitmvtest/src/main/resources/prod/content.txt          <== WRONG
> 
> 
> NOTE:
> =======
> if modified the content.txt in the 3 folders to contain different
> data, then repeating the above 'git mv' will produce correct result,
> 
> renamed:    gitmvtest/resources/demo/content.txt ->
> gitmvtest/src/main/resources/demo/content.txt       <== CORRECT
> renamed:    gitmvtest/resources/dev/content.txt ->
> gitmvtest/src/main/resources/dev/content.txt             <== CORRECT
> renamed:    gitmvtest/resources/prod/content.txt ->
> gitmvtest/src/main/resources/prod/content.txt          <== CORRECT
> 
> 
> 
> just want to see if this is a bug, user error (on my end), or??
> 

This looks like the same issue as submodule--helper list has:
http://article.gmane.org/gmane.comp.version-control.git/287227
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