Fix bug: Properly quote args to generated -pkg.el `define-package'.

* lisp/emacs-lisp/package.el (package-generate-description-file):
Inline `package--alist-to-plist'; rewrite to selectively
quote alist values that are not self-quoting.
(package--alist-to-plist): Delete func.

2 files changed, 25 insertions, 5 deletions

diff --git a/lisp/ChangeLog b/lisp/ChangeLog
index eb532742ada..2eeb15e42ad 100644
--- a/lisp/ChangeLog
+++ b/lisp/ChangeLog
@@ -1,3 +1,12 @@
+2014-05-25  Thien-Thi Nguyen  <ttn@gnu.org>
+
+        Fix bug: Properly quote args to generated -pkg.el `define-package'.
+
+        * emacs-lisp/package.el (package-generate-description-file):
+        Inline `package--alist-to-plist'; rewrite to selectively
+        quote alist values that are not self-quoting.
+        (package--alist-to-plist): Delete func.
+
 2014-05-25  Andreas Schwab  <schwab@linux-m68k.org>
 
         * term/xterm.el (xterm-function-map): Add mapping for shifted
diff --git a/lisp/emacs-lisp/package.el b/lisp/emacs-lisp/package.el
index c194e1352ac..c23be253b37 100644
--- a/lisp/emacs-lisp/package.el
+++ b/lisp/emacs-lisp/package.el
@@ -702,14 +702,25 @@ untar into a directory named DIR; otherwise, signal an error."
                            (list (car elt)
                                  (package-version-join (cadr elt))))
                          requires))))
-          (package--alist-to-plist
-           (package-desc-extras pkg-desc))))
+          (let ((alist (package-desc-extras pkg-desc))
+                flat)
+            (while alist
+              (let* ((pair (pop alist))
+                     (key (car pair))
+                     (val (cdr pair)))
+                ;; Don't bother ‘quote’ing ‘key’; it is always a keyword.
+                (push key flat)
+                (push (if (and (not (consp val))
+                               (or (keywordp val)
+                                   (not (symbolp val))
+                                   (memq val '(nil t))))
+                          val
+                        `',val)
+                      flat)))
+            (nreverse flat))))
         "\n")
        nil pkg-file nil 'silent))))
 
-(defun package--alist-to-plist (alist)
-  (apply #'nconc (mapcar (lambda (pair) (list (car pair) (cdr pair))) alist)))
-
 (defun package-unpack (pkg-desc)
   "Install the contents of the current buffer as a package."
   (let* ((name (package-desc-name pkg-desc))