[PATCH 0/8] Improve tag change completion

[Austin Clements]

Quoth Mark Walters on Oct 22 at 10:43 pm:
> This looks good to me +1. It makes the code clearer and nicer to read as
> well as giving a better user experience, and it is makes fixing the long
> standing tagging races simpler.
> 
> I have a couple of docstring comments:
> 
> In patch 2 perhaps notmuch-tag-completions could have a docstring.

Added.  I noticed that I had failed to update the call from
`notmuch-select-tag-with-completion', so I fixed that, too.  I don't
understand why we take lists of search terms in random places and
never use more than one element, but I suppose this series doesn't
make that any worse.

> In Patch 4 I think the docstring for notmuch-search-tag is outdated: it
>  is "Change tags for the currently selected thread or region." but 
>  beg and end can now be specified by the caller.

I've left the first sentence as it is, since it's good interactive
documentation and a typical way to describe functions even if they
take a region as arguments (see, for example, `kill-region').  But
I've elaborated the rest of the docstring to be clearer about this.

> and one actual comment:
> 
> in patch 3 (for show) delete-dups is called before the list is passed to
> notmuch-read-tag-changes whereas it is not for search or pick.
> Obviously this is not actually a problem but it might be worth being
> consistent.

Ah, whoops.  I'd done this before I decided to handle duplicates in
`notmuch-read-tag-changes'.  Since it's redundant, I've removed it.

> But that was all I found. All tests pass and everything I try behaves
> exactly as expected.
> 
> Best wishes
> 
> Mark
> 
> 
> On Tue, 22 Oct 2013, Austin Clements <amdragon at MIT.EDU> wrote:
> > This series improves tag change completion in various ways for
> > commands like +, -, and *.
> >
> > From a user perspective, this provides command-specific prompts like
> > "Tag message" and "Tag all" instead of the generic "Tag" prompt, and
> > bases tag removal completions on the tags that are in the buffer,
> > rather than the current tags in the database, providing a more
> > predicable experience.
> >
> > From an implementation perspective, this new tag removal completion
> > behavior improves efficiency and eliminates a road block to fixing the
> > tagging race bug (which otherwise results in massive queries just to
> > compute removal completions).  The new code is also more "Elispy" and
> > predictable because all tag change prompting now occurs at the
> > interactive entry points, rather than buried under several layers of
> > non-interactive calls.
> >
> > This is a spiritual successor to
> > id:1354263691-19715-1-git-send-email-markwalters1009 at gmail.com, though
> > it takes a very different approach.  This is also a prerequisite to
> > the tag race fix in
> > id:1381185201-25197-1-git-send-email-amdragon at mit.edu and I plan to
> > send an updated version of that series when this one is accepted.
> >
> > Patches 1, 5, and 6 could be pushed on their own.  They fix bugs or
> > sort of bugs that get in the way of the rest of the series.