Merge 228aa696f2 into 88d794c1da

README.org

@@ -99,6 +99,22 @@ $ meson compile -C build
 $ meson install -C build
 #+end_example
 
+** Windows
+
+It is possible to make ~mu4e~ on Windows communicate with ~mu~ running in WSL,
+side-stepping the issue of compiling ~mu~ on windows. Assuming you have installed
+~mu~ in WSL and added to ~$PATH~, here's a sample configuration.
+
+#+begin_src emacs-lisp
+(use-package mu4e
+  :load-path "//wsl.localhost/Ubuntu/path/to/mu4e"
+  :config
+  (setq mu4e-mu-binary "wsl mu"))
+#+end_src
+
+Launching ~mu4e~ from any buffer under ~//wsl.localhost/Ubuntu~ should work then.
+For more information on why this works, look at [[https://github.com/djcb/mu/pull/2624][this PR]].
+
 ** Contributing
 
 Contributions are welcome! See the Github issue list and [[IDEAS.org]].

mu4e/mu4e-server.el

@@ -436,7 +436,7 @@ As per issue #2198."
 (defun mu4e--version-check ()
   ;; sanity-check 1
   (let ((default-directory temporary-file-directory)) ;;ensure it's local.
-    (unless (and mu4e-mu-binary (file-executable-p mu4e-mu-binary))
+    (unless mu4e-mu-binary
       (mu4e-error
        "Cannot find mu, please set `mu4e-mu-binary' to the mu executable path"))
     ;; sanity-check 2
@@ -480,9 +480,9 @@ You cannot run the repl when mu4e is running (or vice-versa)."
     (setq mu4e--server-buf "")
     (mu4e-log 'misc "* invoking '%s' with parameters %s" mu4e-mu-binary
               (mapconcat (lambda (arg) (format "'%s'" arg)) args " "))
-    (setq mu4e--server-process (apply 'start-process
-                                      mu4e--server-name mu4e--server-name
-                                      mu4e-mu-binary args))
+    (setq mu4e--server-process (start-process-shell-command
+                                mu4e--server-name mu4e--server-name
+                                (concat mu4e-mu-binary " " (mapconcat #'shell-quote-argument args " "))))
     ;; register a function for (:info ...) sexps
     (unless mu4e--server-process
       (mu4e-error "Failed to start the mu4e backend"))

mu4e/mu4e.el

@@ -94,7 +94,7 @@ Otherwise, completely quit mu4e, including automatic updating."
     (unless (string= (mu4e-server-version) mu4e-mu-version)
       (mu4e-error "The mu server has version %s, but we need %s"
                   (mu4e-server-version) mu4e-mu-version)))
-  (unless (and mu4e-mu-binary (file-executable-p mu4e-mu-binary))
+  (unless mu4e-mu-binary
     (mu4e-error "Please set `mu4e-mu-binary' to the full path to the mu
     binary"))
   (dolist (var '(mu4e-sent-folder mu4e-drafts-folder