[p4] rolling back

[Ken Williams]

On 2/5/07 9:36 PM, "Steve M. Robbins" <steve at sumost.ca> wrote:

> On Mon, Feb 05, 2007 at 07:27:30PM -0500, David Weintraub wrote:
>> Not too much of an issue if these are indeed the most recent and
>> you've done no integration. The full directions can be found in Tech
>> Note #14 <http://www.perforce.com/perforce/technotes/note014.html>. It
>> basically involves sync'ing back to the earlier version, checking the
>> files that were changed for edit, sync'ing to the head, and resolving
>> the changes with a "p4 resolve -ay".
> 
> I must say that I'm a little surprised by this.  Why isn't there a
> 1-liner to apply the changelist in reverse?  Even the venerable CVS
> offers (equivalent to) this functionality.

If you can show me a CVS command that will undo the changes made during a
certain timeframe, possibly including adds and deletes, respecting any
changes that have been made since, I'll eat my [chocolate] hat. =)

I think CVS doesn't even have enough information to start - the first step
would probably be something like "have a meeting with your developers and
figure out which revisions of which files were changes you want to get rid
of".  In Zoltan's case, they're nicely packaged up into 3 atomic
changelists.

That said, I also figure lots of people probably write their own local
"p4_undo" wrapper scripts, which is probably a sign that a "p4 undo" command
built right into perforce could be a good idea.

 -Ken