In might of id:20131023154404.GE20337@mit.edu I am now happy with this
series. LGTM +1 

Best wishes

Mark


On Wed, 23 Oct 2013, Austin Clements <amdragon@MIT.EDU> wrote:
> This is v2 of id:1382471457-26056-1-git-send-email-amdragon@mit.edu.
> It improves some documentation strings, fixes one bug, and elimintes
> some redundant code.  The diff from v1 is below.
>
> diff --git a/emacs/notmuch-show.el b/emacs/notmuch-show.el
> index ef77839..f66d669 100644
> --- a/emacs/notmuch-show.el
> +++ b/emacs/notmuch-show.el
> @@ -1800,7 +1800,6 @@ See `notmuch-tag' for information on the format of TAG-CHANGES."
>     (list (let (tags)
>  	   (notmuch-show-mapc
>  	    (lambda () (setq tags (append (notmuch-show-get-tags) tags))))
> -	   (delete-dups tags)
>  	   (notmuch-read-tag-changes tags "Tag thread"))))
>    (notmuch-tag (notmuch-show-get-messages-ids-search) tag-changes)
>    (notmuch-show-mapc
> diff --git a/emacs/notmuch-tag.el b/emacs/notmuch-tag.el
> index feee17c..7b21006 100644
> --- a/emacs/notmuch-tag.el
> +++ b/emacs/notmuch-tag.el
> @@ -189,6 +189,9 @@ the messages that were tagged"
>  `notmuch-read-tag-changes' function.")
>  
>  (defun notmuch-tag-completions (&rest search-terms)
> +  "Return a list of tags for messages matching SEARCH-TERMS.
> +
> +Returns all tags if no search terms are given."
>    (if (null search-terms)
>        (setq search-terms (list "*")))
>    (split-string
> @@ -199,7 +202,7 @@ the messages that were tagged"
>     "\n+" t))
>  
>  (defun notmuch-select-tag-with-completion (prompt &rest search-terms)
> -  (let ((tag-list (notmuch-tag-completions search-terms)))
> +  (let ((tag-list (apply #'notmuch-tag-completions search-terms)))
>      (completing-read prompt tag-list nil nil nil 'notmuch-select-tag-history)))
>  
>  (defun notmuch-read-tag-changes (current-tags &optional prompt initial-input)
> diff --git a/emacs/notmuch.el b/emacs/notmuch.el
> index 5492e1b..53e9826 100644
> --- a/emacs/notmuch.el
> +++ b/emacs/notmuch.el
> @@ -584,7 +584,10 @@ Returns (TAG-CHANGES REGION-BEGIN REGION-END)."
>    "Change tags for the currently selected thread or region.
>  
>  See `notmuch-tag' for information on the format of TAG-CHANGES.
> -If BEG or END are nil, applies to the thread at point."
> +When called interactively, this uses the region if the region is
> +active.  When called directly, BEG and END provide the region.
> +If these are nil or not provided, this applies to the thread at
> +point."
>    (interactive (notmuch-search-interactive-tag-changes))
>    (unless (and beg end) (setq beg (point) end (point)))
>    (let ((search-string (notmuch-search-find-thread-id-region-search beg end)))