[PATCH v2] emacs: display tags in notmuch-show with links

[Austin Clements]

Quoth Ethan Glasser-Camp on Nov 18 at  5:59 pm:
> Damien Cassou <damien.cassou at gmail.com> writes:
> 
> > This patch obsoletes
> > id:1352565719-12397-1-git-send-email-damien.cassou at gmail.com
> >
> > [PATCH 1/4] emacs: Add a thread's tags to emacs header-line
> > [PATCH 2/4] emacs: Make tags in header-line clickable
> > [PATCH 3/4] emacs: Make tags that appear in `notmuch-show' clickable
> > [PATCH 4/4] emacs: Add unit-tests for clickable tags in notmuch-show
> >
> > This patch makes clickable all tags that appear in notmuch-show
> > buffers. Each tag is a link to open a new notmuch-search buffer for
> > this tag. Additionally, the buffer's header-line now shows the
> > thread's tags (clickable only if the `header-button' library is loaded
> > or loadable).
> 
> Looks fine to me. Let me just get the notes from my bikeshed, in case
> you get asked to roll another version :)
> 
> - You might want to use #' on lambdas.
> 
> - It bothers me how similar notmuch-tagger-{body,header}-button-action
>   are. I thought it might be better to unify them by seeing what type
>   the button argument was. Here's my (untested) approach which you might
>   find prettier or uglier.
> 
> (notmuch-tagger-all-button-get (button attrib)
>   "Utility function to do button-get on different kinds of buttons."
>   (cond
>     ((integer-or-marker-p button)
>       (button-get button attrib))
>     ((and (featurep 'header-button)
>           (listp button))
>       (header-button-get button attrib))
>     (t (error "unknown type of button %s" button))

This seems like overkill given that all of the common code in
notmuch-tagger-{body,header}-button-action is already abstracted into
a common function.  Were there other places where code was duplicated
because of the difference between regular buttons and header buttons?

> - The comment for notmuch-tagger-make-body-link reads that it will work
>   "everywhere except in the header-line". Does this mean mode-line, menu
>   bar, or what? How about just "won't work in the header-line"?
> 
> - In patch 3:
> 
>  +If tags the result of this function is to be used within the
> 
> I think this should just read "If the result".
> 
> Ethan