Re: On git 1.6 (novice's opinion)

From: Etienne Vallette d'Osia <etienne.vallettedosia@gmail.com>
Date: Mar 27, 2009, 10:57 UTC
Message-ID: <49CCB129.1070606@gmail.com>
In-Reply-To: <49CCAF5D.21814.24B4DE63@Ulrich.Windl.rkdvmks1.ngate.uni-regensburg.de>

Ulrich Windl a écrit :

Show 6 quoted lines

>>> 3) "git undo": If possible undo the effects of the last command.
> 
> If impossible, add confirmations for some "dangerous" (non-obvious) commands 
> before doing possibly harmful things. Maybe adding a kind of "user-level setting" 
> (novice, expert, guro) could control such confirmations.
>

Why ?
All objects stored are immutable, and some tools keep informations 
(ORIGIN_HEAD, refs/original) to allow a undo hand-made.
Moreover the reflog (and stash if you want to use it for this use) store 
  informations during time...

So it's possible to provide a generic undo for all commands that change refs.

Maybe an "undo" directory in $GIT_DIR, which will a keep a copy version of all refs. Every commands store the current refs in this folder _before_ to change anything, and the undo restore them all. At least, a "lastcmd" (for example) file could be added in this directory to allow an more clever undo.