Stamps

[Matt Mackall]

On Mon, 2011-05-09 at 13:57 -0400, Steve Losh wrote:
> On 05/09/11 at 12:48P, Kevin Bullock wrote:
> > On May 9, 2011, at 12:35 PM, Kevin Bullock wrote:
> > 
> > > On May 7, 2011, at 6:52 PM, Adrian Buehlmann wrote:
> > > 
> > >> veracity [1] has the concept of "stamps". A stamp is like a tag (a name)
> > >> that can be applied to changesets. But a stamp differs from a tag
> > >> because the same stamp can be applied to *multiple* changesets.
> > >> 
> > >> Example usage: "passes test", "behavior change", "pending review"
> > > 
> > > How is this different from (a) named branches, and (b) bookmarks when used as described in issue2788?
> > > 
> > > For reference, here's the 4(!) types of labels we currently have (cribbed from mpm's notes on issue2788):
> > 
> > Actually let's extend that with a column that indicates whether a label can apply to multiple commits or not:
> > 
> > name      stored   mutable  auditable  sharable  auto-updating  multiple
> > tags      .hgtags  yes      yes        yes       no             no
> > localtags .hg      yes      no         no        no             no
> > branches  commit   no       yes        yes       no             yes
> > bookmarks .hg      yes      no         yes       if-current     no
> > 
> > ...the extra column bringing the number of possible combinations to *20*.
> 
> Correct, and stamps would fit in like so:
> 
> name      stored   mutable  auditable  sharable  auto-updating  multiple
> tags      .hgtags  yes      yes        yes       no             no
> localtags .hg      yes      no         no        no             no
> branches  commit   no       yes        yes       no             yes
> bookmarks .hg      yes      no         yes       if-current     no
> stamps    ?        yes      ?          yes       no             yes

The point remains: we're not going to add a dozen different types of
markers to cover all useful behaviors (the above table suggests 64
possible types!). Even having one for each column above would be too
many. Even the four we currently have: too many. I'm planning
deprecating[1] localtags soon. 

[1] Before anyone freaks out, that just means it will cease to appear in
the help for tag.
-- 
Mathematics is the supreme nostalgia of our time.