On Wed, Jul 12, 2023 at 07:50:29PM +0200, Christian Weisgerber wrote:
> Mark Jamsek:
> 
> > As discussed not too long ago, the below diff implements the special
> > keywords BASE and HEAD, which can be used as the <commit> argument to
> > the -c option in the diff, log, and update commands.
> 
> I certainly think this will be useful!
> $ got update -c HEAD-1; got histedit
> 
> I guess "HEAD" is already special in git/got.  Would it make sense
> to use a special symbol instead of "BASE", e.g. "."?
> 
> There is another issue with BASE: In a got worktree, the base commit
> is per file.

The special symbols which may not appear in reference names are:

  ' ' (space)
  ~
  ^
  :
  ?
  *
  [
  \
  //
  @{

These are used by the Git CLI for various purposes. If we can somehow
derive a simple and usable syntax from these symbols it will be much
easier to make this feature work with branch names.