[PATCH] emacs: Mention race condition safety in user visible documentation

[Michal Sojka <sojkam1@fel.cvut.cz>]

After recent rework of a/A/x/X key bindings, the important paragraph in
documentation of `notmuch-show-archive-thread' stayed hidden from users,
because no key is bound to this function.

This patch copies the important paragraph to the documentation of
functions currently bound to keys.
---
 emacs/notmuch-show.el |   14 ++++++++++++--
 1 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/emacs/notmuch-show.el b/emacs/notmuch-show.el
index aa9ccee..1916146 100644
--- a/emacs/notmuch-show.el
+++ b/emacs/notmuch-show.el
@@ -1721,13 +1721,23 @@ buffer."
     (notmuch-show-tag-all (concat op "inbox"))))
 
 (defun notmuch-show-archive-thread-then-next ()
-  "Archive each message in thread, then show next thread from search."
+  "Archive each message in thread, then show next thread from search.
+
+Note: This command is safe from any race condition of new messages
+being delivered to the same thread. It does not archive the
+entire thread, but only the messages shown in the current
+buffer."
   (interactive)
   (notmuch-show-archive-thread)
   (notmuch-show-next-thread t))
 
 (defun notmuch-show-archive-thread-then-exit ()
-  "Archive each message in thread, then exit back to search results."
+  "Archive each message in thread, then exit back to search results.
+
+Note: This command is safe from any race condition of new messages
+being delivered to the same thread. It does not archive the
+entire thread, but only the messages shown in the current
+buffer."
   (interactive)
   (notmuch-show-archive-thread)
   (notmuch-show-next-thread))
-- 
1.7.7.3