[PATCH 1 of 1 RFC] tag: abort if not at a branch head

[Matt Mackall]

On Mon, 2010-12-06 at 13:56 -0600, Kevin Bullock wrote:
> # HG changeset patch
> # User Kevin Bullock <kbullock at ringworld.org>
> # Date 1291665075 21600
> # Node ID f52e752c6d5f90352bb29ba6c2543656f6e4531e
> # Parent  8c6b7a5f38c4585b1b2c2ceaffa8023f36a18479
> tag: abort if not at a branch head
> 
> Since it's usually only desirable to make tag commits on top of branch
> heads, abort if the working dir parent is not a branch head. -f/--force
> may be passed to commit at a non-head anyway.

I'm hard-pressed to think of any realistic use cases for committing a
tag at somewhere other than a branch head. Can anyone think of one?

-- 
Mathematics is the supreme nostalgia of our time.