[PATCH 1/5] b4: Check for message ID match when using current buffer's URL

[Kyle Meyer <kyle@kyleam.com>]

If piem-mid-to-thread-functions fails to generate the thread,
piem-b4--get-am-files tries to download the mbox from the URL
associated with the current buffer.  However, it uses the message ID
returned by piem-mid rather than the message ID passed by
piem-b4-am-from-mid.  That's not a safe assumption for non-interactive
calls to piem-b4-am-from-mid.

Construct the URL with the message ID passed by piem-b4-am-from-mid,
and skip the download completely if that message ID doesn't match the
one for the current buffer.
---
 piem-b4.el | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/piem-b4.el b/piem-b4.el
index f25a676..48c8bf4 100644
--- a/piem-b4.el
+++ b/piem-b4.el
@@ -72,8 +72,8 @@ (defun piem-b4--get-am-files (mid coderepo args)
     ;; try to download it from a URL at `piem-inboxes'.  Finally, fall
     ;; back to b4's configuration.
     (unless local-mbox-p
-      (when-let ((url (piem-inbox-get :url))
-                 (mid (piem-mid))
+      (when-let ((url (and (equal mid (piem-mid))
+                           (piem-inbox-get :url)))
                  (buffer (condition-case nil
                              (piem-download-and-decompress
                               (concat url (piem-escape-mid mid) "/t.mbox.gz"))
-- 
2.31.1