Bug with deleted files and stash-push --keep-idex

From: Martin Nicolay <m.nicolay@osm-ag.de>
To: git@vger.kernel.org
Subject: Bug with deleted files and stash-push --keep-idex
Date: Thu, 11 Jul 2019 14:55:43 +0200 (CEST)	[thread overview]
Message-ID: <alpine.LSU.2.20.1907111452560.3570@cpza.bfz-tzou.qr> (raw)

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Hi!

I don't know if this is a software or documentation bug.

man git-stash says about --keep-index:
     If the --keep-index option is used, all changes already added to
     the index are left intact.

If a file is deleted and this deletion is in the index a following
     $ git stash push --keep-index
keeps this deletion in the index but not in the working-tree.

If a file is changed and this change is in the index a following
     $ git stash push --keep-index
keeps this change in the index and also in the working-tree.

This is inconsistent.

------------- deletion -------------
$ git status
On branch master
Changes to be committed:
   (use "git reset HEAD <file>..." to unstage)

         deleted:    test-file

$ git stash push --keep-index
Saved working directory and index state WIP on master: a3171f887b new test-file
$ git status
On branch master
Changes to be committed:
   (use "git reset HEAD <file>..." to unstage)

         deleted:    test-file

Untracked files:
   (use "git add <file>..." to include in what will be committed)

         test-file

------------- change -------------
$ git status
On branch master
Your branch is up to date with 'origin/master'.

Changes to be committed:
   (use "git reset HEAD <file>..." to unstage)

         modified:   test-file

$ git stash push --keep-index
Saved working directory and index state WIP on master: a3171f887b new test-file
$ git status
On branch master
Your branch is up to date with 'origin/master'.

Changes to be committed:
   (use "git reset HEAD <file>..." to unstage)

         modified:   test-file

--------------------------

My expectation was that the deletion would be preserved within the
working-tree because this is a change added to the index and should be
left intact.

Best regards
Martin Nicolay

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