master 5c0f0751d05: Support displaying all package maintainers (Bug#62524)

[Jonas Bernoulli]

branch: master
commit 5c0f0751d0541bbdf0696ef3e76e2ad6562adcb9
Author: Jonas Bernoulli <jonas@bernoul.li>
Commit: Jonas Bernoulli <jonas@bernoul.li>

    Support displaying all package maintainers (Bug#62524)
    
    * lisp/emacs-lisp/package.el (describe-package-1): Use new
    :maintainers package extra property from "archive-contents",
    if non-nil.
    * (package-buffer-info): Fix docstring.
---
 lisp/emacs-lisp/package.el | 33 ++++++++++++++++++---------------
 1 file changed, 18 insertions(+), 15 deletions(-)

diff --git a/lisp/emacs-lisp/package.el b/lisp/emacs-lisp/package.el
index 0c5cd82ac62..6cb78801d7f 100644
--- a/lisp/emacs-lisp/package.el
+++ b/lisp/emacs-lisp/package.el
@@ -1224,8 +1224,8 @@ boundaries."
        :url website
        :keywords keywords
        :maintainer
-       ;; For backward compatibility, use a single string if there's only
-       ;; one maintainer (the most common case).
+       ;; For backward compatibility, use a single cons-cell if
+       ;; there's only one maintainer (the most common case).
        (let ((maints (lm-maintainers))) (if (cdr maints) maints (car maints)))
        :authors (lm-authors)))))
 
@@ -2736,7 +2736,8 @@ Helper function for `describe-package'."
          (status (if desc (package-desc-status desc) "orphan"))
          (incompatible-reason (package--incompatible-p desc))
          (signed (if desc (package-desc-signed desc)))
-         (maintainer (cdr (assoc :maintainer extras)))
+         (maintainers (or (cdr (assoc :maintainers extras))
+                          (cdr (assoc :maintainer extras))))
          (authors (cdr (assoc :authors extras)))
          (news (and-let* (pkg-dir
                           ((not built-in))
@@ -2871,19 +2872,21 @@ Helper function for `describe-package'."
          'action 'package-keyword-button-action)
         (insert " "))
       (insert "\n"))
-    (when maintainer
-      (package--print-help-section "Maintainer")
-      (package--print-email-button maintainer))
-    (when authors
+    (when maintainers
+      (unless (proper-list-p maintainers)
+        (setq maintainers (list maintainers)))
       (package--print-help-section
-          (if (= (length authors) 1)
-              "Author"
-            "Authors"))
-      (package--print-email-button (pop authors))
-      ;; If there's more than one author, indent the rest correctly.
-      (dolist (name authors)
-        (insert (make-string 13 ?\s))
-        (package--print-email-button name)))
+          (if (cdr maintainers) "Maintainers" "Maintainer"))
+      (dolist (maintainer maintainers)
+        (when (bolp)
+          (insert (make-string 13 ?\s)))
+        (package--print-email-button maintainer)))
+    (when authors
+      (package--print-help-section (if (cdr authors) "Authors" "Author"))
+      (dolist (author authors)
+        (when (bolp)
+          (insert (make-string 13 ?\s)))
+        (package--print-email-button author)))
     (let* ((all-pkgs (append (cdr (assq name package-alist))
                              (cdr (assq name package-archive-contents))
                              (let ((bi (assq name package--builtins)))