[PATCH 2/4] Add accessor for piem-inboxes

[Kyle Meyer <kyle@kyleam.com>]

There's no need to have a function like piem-inbox-url for every key.
Drop piem-inbox-url, but keep piem-inbox-coderepo around because it
does a bit of extra processing on top.
---
 piem-b4.el |  2 +-
 piem.el    | 15 +++++++--------
 2 files changed, 8 insertions(+), 9 deletions(-)

diff --git a/piem-b4.el b/piem-b4.el
index 6de0d2b..f5aa777 100644
--- a/piem-b4.el
+++ b/piem-b4.el
@@ -63,7 +63,7 @@ (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-url))
+      (when-let ((url (piem-inbox-get :url))
                  (mid (piem-mid))
                  (buffer (condition-case nil
                              (piem-download-and-decompress
diff --git a/piem.el b/piem.el
index f59f723..6102b0f 100644
--- a/piem.el
+++ b/piem.el
@@ -298,10 +298,14 @@ (defun piem-inbox ()
   "Return the current buffer's inbox."
   (run-hook-with-args-until-success 'piem-get-inbox-functions))
 
+(defun piem-inbox-get (key)
+  "Get info KEY for the inbox entry in `piem-inboxes'."
+  (when-let ((p (piem-inbox)))
+    (plist-get (cdr (assoc p piem-inboxes)) key)))
+
 (defun piem-inbox-coderepo ()
   "Return the code repository of current buffer's inbox."
-  (when-let ((p (piem-inbox))
-             (repo (plist-get (cdr (assoc p piem-inboxes)) :coderepo)))
+  (when-let ((repo (piem-inbox-get :coderepo)))
     (expand-file-name repo)))
 
 (defun piem-inbox-by-url-match (url)
@@ -315,11 +319,6 @@ (defun piem-inbox-by-url-match (url)
         (when (string-match-p (regexp-quote p-url) url)
           (throw 'hit (car inbox)))))))
 
-(defun piem-inbox-url ()
-  "Return the URL of current buffer's inbox."
-  (when-let ((p (piem-inbox)))
-    (plist-get (cdr (assoc p piem-inboxes)) :url)))
-
 (defun piem-inbox-coderepo-maybe-read ()
   "Like `piem-inbox-coderepo', but fall back to reading the repo."
   (let ((inbox
@@ -495,7 +494,7 @@ (defun piem-inject-thread-into-maildir (mid &optional message-only)
      "`piem-maildir-directory' does not look like a Maildir directory"))
    ((not (or message-only (piem-check-gunzip)))
     (user-error "gunzip executable not found")))
-  (when-let ((url (concat (or (piem-inbox-url)
+  (when-let ((url (concat (or (piem-inbox-get :url)
                               (user-error
                                "Could not find inbox URL for current buffer"))
                           mid
-- 
2.28.0