From 06872a45707f7c2321bd9d3ebbd49cf7db328fa1 Mon Sep 17 00:00:00 2001
From: Nicolas Goaziou <n.goaziou@gmail.com>
Date: Sun, 2 Dec 2012 17:24:19 +0100
Subject: [PATCH] export back-ends: Activate asynchronous export

* contrib/lisp/org-e-ascii.el (org-e-ascii-export-as-ascii,
  org-e-ascii-export-to-ascii): Activate asynchronous export.
* contrib/lisp/org-e-beamer.el (org-e-beamer-export-as-latex,
  org-e-beamer-export-to-latex): Activate asynchronous export.
* contrib/lisp/org-e-groff.el (org-e-groff-export-to-groff,
  org-e-groff-export-to-pdf): Activate asynchronous export.
* contrib/lisp/org-e-html.el (org-e-html-export-as-html,
  org-e-html-export-to-html): Activate asynchronous export.
* contrib/lisp/org-e-icalendar.el (org-e-icalendar-export-to-ics):
  Activate asynchronous export.
* contrib/lisp/org-e-latex.el (org-e-latex-export-as-latex,
  org-e-latex-export-to-latex, org-e-latex-export-to-pdf): Activate
  asynchronous export.
* contrib/lisp/org-e-man.el (org-e-man-export-to-man,
  org-e-man-export-to-pdf): Activate asynchronous export.
* contrib/lisp/org-e-odt.el (org-e-odt-export-to-odt): Activate
  asynchronous export.  Remove body-only argument.
* contrib/lisp/org-e-texinfo.el (org-e-texinfo-export-to-texinfo,
  org-e-texinfo-export-to-info): Activate asynchronous export.
* contrib/lisp/org-md.el (org-md-export-as-markdown,
  org-md-export-to-markdown): Activate asynchronous export.
---
 contrib/lisp/org-e-ascii.el     | 69 +++++++++++++++++++----------
 contrib/lisp/org-e-beamer.el    | 72 +++++++++++++++++++++++-------
 contrib/lisp/org-e-groff.el     | 47 ++++++++++++++++----
 contrib/lisp/org-e-html.el      | 54 +++++++++++++++++------
 contrib/lisp/org-e-icalendar.el | 97 ++++++++++++++++++++++++++++++-----------
 contrib/lisp/org-e-latex.el     | 69 +++++++++++++++++++++++------
 contrib/lisp/org-e-man.el       | 39 ++++++++++++++---
 contrib/lisp/org-e-odt.el       | 71 ++++++++++++++++++++----------
 contrib/lisp/org-e-texinfo.el   | 37 +++++++++++++---
 contrib/lisp/org-md.el          | 47 +++++++++++++++-----
 10 files changed, 456 insertions(+), 146 deletions(-)

diff --git a/contrib/lisp/org-e-ascii.el b/contrib/lisp/org-e-ascii.el
index d44723f2e..6d46a4ade 100644
--- a/contrib/lisp/org-e-ascii.el
+++ b/contrib/lisp/org-e-ascii.el
@@ -104,23 +104,23 @@
   :menu-entry
   (?t "Export to Plain Text"
       ((?A "As ASCII buffer"
-	   (lambda (s v b)
-	     (org-e-ascii-export-as-ascii s v b '(:ascii-charset ascii))))
+	   (lambda (a s v b)
+	     (org-e-ascii-export-as-ascii a s v b '(:ascii-charset ascii))))
        (?a "As ASCII file"
-	   (lambda (s v b)
-	     (org-e-ascii-export-to-ascii s v b '(:ascii-charset ascii))))
+	   (lambda (a s v b)
+	     (org-e-ascii-export-to-ascii a s v b '(:ascii-charset ascii))))
        (?L "As Latin1 buffer"
-	   (lambda (s v b)
-	     (org-e-ascii-export-as-ascii s v b '(:ascii-charset latin1))))
+	   (lambda (a s v b)
+	     (org-e-ascii-export-as-ascii a s v b '(:ascii-charset latin1))))
        (?l "As Latin1 file"
-	   (lambda (s v b)
-	     (org-e-ascii-export-to-ascii s v b '(:ascii-charset latin1))))
+	   (lambda (a s v b)
+	     (org-e-ascii-export-to-ascii a s v b '(:ascii-charset latin1))))
        (?U "As UTF-8 buffer"
-	   (lambda (s v b)
-	     (org-e-ascii-export-as-ascii s v b '(:ascii-charset utf-8))))
+	   (lambda (a s v b)
+	     (org-e-ascii-export-as-ascii a s v b '(:ascii-charset utf-8))))
        (?u "As UTF-8 file"
-	   (lambda (s v b)
-	     (org-e-ascii-export-to-ascii s v b '(:ascii-charset utf-8))))))
+	   (lambda (a s v b)
+	     (org-e-ascii-export-to-ascii a s v b '(:ascii-charset utf-8))))))
   :filters-alist ((:filter-headline . org-e-ascii-filter-headline-blank-lines)
 		  (:filter-parse-tree . org-e-ascii-filter-paragraph-spacing)
 		  (:filter-section . org-e-ascii-filter-headline-blank-lines))
@@ -1780,7 +1780,7 @@ This function only applies to `e-ascii' back-end.  See
 
 ;;;###autoload
 (defun org-e-ascii-export-as-ascii
-  (&optional subtreep visible-only body-only ext-plist)
+  (&optional async subtreep visible-only body-only ext-plist)
   "Export current buffer to a text buffer.
 
 If narrowing is active in the current buffer, only export its
@@ -1788,6 +1788,10 @@ narrowed part.
 
 If a region is active, export that region.
 
+A non-nil optional argument ASYNC means the process should happen
+asynchronously.  The resulting buffer should be accessible
+through the `org-export-stack' interface.
+
 When optional argument SUBTREEP is non-nil, export the sub-tree
 at point, extracting information from the headline properties
 first.
@@ -1806,16 +1810,27 @@ Export is done in a buffer named \"*Org E-ASCII Export*\", which
 will be displayed when `org-export-show-temporary-export-buffer'
 is non-nil."
   (interactive)
-  (let ((outbuf (org-export-to-buffer
-		 'e-ascii "*Org E-ASCII Export*"
-		 subtreep visible-only body-only ext-plist)))
-    (with-current-buffer outbuf (text-mode))
-    (when org-export-show-temporary-export-buffer
-      (switch-to-buffer-other-window outbuf))))
+  (if async
+      (org-export-async-start
+	  (lambda (output)
+	    (with-current-buffer (get-buffer-create "*Org E-ASCII Export*")
+	      (erase-buffer)
+	      (insert output)
+	      (goto-char (point-min))
+	      (text-mode)
+	      (org-export-add-to-stack (current-buffer) 'e-ascii)))
+	`(org-export-as 'e-ascii ,subtreep ,visible-only ,body-only
+			',ext-plist))
+    (let ((outbuf (org-export-to-buffer
+		   'e-ascii "*Org E-ASCII Export*"
+		   subtreep visible-only body-only ext-plist)))
+      (with-current-buffer outbuf (text-mode))
+      (when org-export-show-temporary-export-buffer
+	(switch-to-buffer-other-window outbuf)))))
 
 ;;;###autoload
 (defun org-e-ascii-export-to-ascii
-  (&optional subtreep visible-only body-only ext-plist)
+  (&optional async subtreep visible-only body-only ext-plist)
   "Export current buffer to a text file.
 
 If narrowing is active in the current buffer, only export its
@@ -1823,6 +1838,10 @@ narrowed part.
 
 If a region is active, export that region.
 
+A non-nil optional argument ASYNC means the process should happen
+asynchronously.  The resulting file should be accessible through
+the `org-export-stack' interface.
+
 When optional argument SUBTREEP is non-nil, export the sub-tree
 at point, extracting information from the headline properties
 first.
@@ -1840,8 +1859,14 @@ file-local settings.
 Return output file's name."
   (interactive)
   (let ((outfile (org-export-output-file-name ".txt" subtreep)))
-    (org-export-to-file
-     'e-ascii outfile subtreep visible-only body-only ext-plist)))
+    (if async
+	(org-export-async-start
+	    (lambda (f) (org-export-add-to-stack f 'e-ascii))
+	  `(expand-file-name
+	    (org-export-to-file
+	     'e-ascii ,outfile ,subtreep ,visible-only ,body-only ',ext-plist)))
+      (org-export-to-file
+       'e-ascii outfile subtreep visible-only body-only ext-plist))))
 
 ;;;###autoload
 (defun org-e-ascii-publish-to-ascii (plist filename pub-dir)
diff --git a/contrib/lisp/org-e-beamer.el b/contrib/lisp/org-e-beamer.el
index bab655e4b..18ab17e51 100644
--- a/contrib/lisp/org-e-beamer.el
+++ b/contrib/lisp/org-e-beamer.el
@@ -273,8 +273,9 @@ brackets.  Return overlay specification, as a string, or nil."
        (?b "As TEX file (Beamer)" org-e-beamer-export-to-latex)
        (?P "As PDF file (Beamer)" org-e-beamer-export-to-pdf)
        (?O "As PDF file and open (Beamer)"
-	   (lambda (s v b)
-	     (org-open-file (org-e-beamer-export-to-pdf s v b))))))
+	   (lambda (a s v b)
+	     (if a (org-e-beamer-export-to-pdf t s v b)
+	       (org-open-file (org-e-beamer-export-to-pdf nil s v b)))))))
   :options-alist
   ((:beamer-theme "BEAMER_THEME" nil org-e-beamer-theme)
    (:beamer-color-theme "BEAMER_COLOR_THEME" nil nil t)
@@ -980,7 +981,7 @@ value."
 
 ;;;###autoload
 (defun org-e-beamer-export-as-latex
-  (&optional subtreep visible-only body-only ext-plist)
+  (&optional async subtreep visible-only body-only ext-plist)
   "Export current buffer as a Beamer buffer.
 
 If narrowing is active in the current buffer, only export its
@@ -988,6 +989,10 @@ narrowed part.
 
 If a region is active, export that region.
 
+A non-nil optional argument ASYNC means the process should happen
+asynchronously.  The resulting buffer should be accessible
+through the `org-export-stack' interface.
+
 When optional argument SUBTREEP is non-nil, export the sub-tree
 at point, extracting information from the headline properties
 first.
@@ -1006,16 +1011,28 @@ Export is done in a buffer named \"*Org E-BEAMER Export*\", which
 will be displayed when `org-export-show-temporary-export-buffer'
 is non-nil."
   (interactive)
-  (let ((outbuf (org-export-to-buffer
-		 'e-beamer "*Org E-BEAMER Export*"
-		 subtreep visible-only body-only ext-plist)))
-    (with-current-buffer outbuf (LaTeX-mode))
-    (when org-export-show-temporary-export-buffer
-      (switch-to-buffer-other-window outbuf))))
+  (if async
+      (org-export-async-start
+	  (lambda (output)
+	    (with-current-buffer (get-buffer-create "*Org E-BEAMER Export*")
+	      (erase-buffer)
+	      (insert output)
+	      (goto-char (point-min))
+	      (LaTeX-mode)
+	      (when org-export-show-temporary-export-buffer
+		(org-export-add-to-stack (current-buffer) 'e-beamer))))
+	`(org-export-as 'e-beamer ,subtreep ,visible-only ,body-only
+			',ext-plist))
+    (let ((outbuf (org-export-to-buffer
+		   'e-beamer "*Org E-BEAMER Export*"
+		   subtreep visible-only body-only ext-plist)))
+      (with-current-buffer outbuf (LaTeX-mode))
+      (when org-export-show-temporary-export-buffer
+	(switch-to-buffer-other-window outbuf)))))
 
 ;;;###autoload
 (defun org-e-beamer-export-to-latex
-  (&optional subtreep visible-only body-only ext-plist)
+  (&optional async subtreep visible-only body-only ext-plist)
   "Export current buffer as a Beamer presentation (tex).
 
 If narrowing is active in the current buffer, only export its
@@ -1023,6 +1040,10 @@ narrowed part.
 
 If a region is active, export that region.
 
+A non-nil optional argument ASYNC means the process should happen
+asynchronously.  The resulting file should be accessible through
+the `org-export-stack' interface.
+
 When optional argument SUBTREEP is non-nil, export the sub-tree
 at point, extracting information from the headline properties
 first.
@@ -1040,12 +1061,19 @@ file-local settings.
 Return output file's name."
   (interactive)
   (let ((outfile (org-export-output-file-name ".tex" subtreep)))
-    (org-export-to-file
-     'e-beamer outfile subtreep visible-only body-only ext-plist)))
+    (if async
+	(org-export-async-start
+	    (lambda (f) (org-export-add-to-stack f 'e-beamer))
+	  `(expand-file-name
+	    (org-export-to-file
+	     'e-beamer ,outfile ,subtreep ,visible-only ,body-only
+	     ',ext-plist)))
+      (org-export-to-file
+       'e-beamer outfile subtreep visible-only body-only ext-plist))))
 
 ;;;###autoload
 (defun org-e-beamer-export-to-pdf
-  (&optional subtreep visible-only body-only ext-plist)
+  (&optional async subtreep visible-only body-only ext-plist)
   "Export current buffer as a Beamer presentation (PDF).
 
 If narrowing is active in the current buffer, only export its
@@ -1053,6 +1081,10 @@ narrowed part.
 
 If a region is active, export that region.
 
+A non-nil optional argument ASYNC means the process should happen
+asynchronously.  The resulting file should be accessible through
+the `org-export-stack' interface.
+
 When optional argument SUBTREEP is non-nil, export the sub-tree
 at point, extracting information from the headline properties
 first.
@@ -1069,8 +1101,18 @@ file-local settings.
 
 Return PDF file's name."
   (interactive)
-  (org-e-latex-compile
-   (org-e-beamer-export-to-latex subtreep visible-only body-only ext-plist)))
+  (if async
+      (let ((outfile (org-export-output-file-name ".tex" subtreep)))
+	(org-export-async-start
+	    (lambda (f) (org-export-add-to-stack f 'e-beamer))
+	  `(expand-file-name
+	    (org-e-latex-compile
+	     (org-export-to-file
+	      'e-beamer ,outfile ,subtreep ,visible-only ,body-only
+	      ',ext-plist)))))
+    (org-e-latex-compile
+     (org-e-beamer-export-to-latex
+      nil subtreep visible-only body-only ext-plist))))
 
 ;;;###autoload
 (defun org-e-beamer-select-environment ()
diff --git a/contrib/lisp/org-e-groff.el b/contrib/lisp/org-e-groff.el
index 77b4e6976..7c2d00d11 100644
--- a/contrib/lisp/org-e-groff.el
+++ b/contrib/lisp/org-e-groff.el
@@ -100,7 +100,9 @@
       ((?g "As GROFF file" org-e-groff-export-to-groff)
        (?p "As PDF file" org-e-groff-export-to-pdf)
        (?o "As PDF file and open"
-	   (lambda (s v b) (org-open-file (org-e-groff-export-to-pdf s v b))))))
+	   (lambda (a s v b)
+	     (if a (org-e-groff-export-to-pdf t s v b)
+	       (org-open-file (org-e-groff-export-to-pdf nil s v b)))))))
   :options-alist
   ((:groff-class "GROFF_CLASS" nil org-e-groff-default-class t)
    (:groff-class-options "GROFF_CLASS_OPTIONS" nil nil t)
@@ -1886,7 +1888,7 @@ contextual information."
 ;;; Interactive functions
 
 (defun org-e-groff-export-to-groff
-  (&optional subtreep visible-only body-only ext-plist)
+  (&optional async subtreep visible-only body-only ext-plist)
   "Export current buffer to a Groff file.
 
 If narrowing is active in the current buffer, only export its
@@ -1894,6 +1896,10 @@ narrowed part.
 
 If a region is active, export that region.
 
+A non-nil optional argument ASYNC means the process should happen
+asynchronously.  The resulting file should be accessible through
+the `org-export-stack' interface.
+
 When optional argument SUBTREEP is non-nil, export the sub-tree
 at point, extracting information from the headline properties
 first.
@@ -1907,14 +1913,23 @@ file-local settings.
 
 Return output file's name."
   (interactive)
-  (setq org-e-groff-registered-references nil)
-  (setq org-e-groff-special-content nil)
   (let ((outfile (org-export-output-file-name ".groff" subtreep)))
-    (org-export-to-file
-     'e-groff outfile subtreep visible-only body-only ext-plist)))
+    (if async
+	(org-export-async-start
+	    (lambda (f) (org-export-add-to-stack f 'e-groff))
+	  (let ((org-e-groff-registered-references nil)
+		(org-e-groff-special-content nil))
+	    `(expand-file-name
+	      (org-export-to-file
+	       'e-groff ,outfile ,subtreep ,visible-only ,body-only
+	       ',ext-plist))))
+      (let ((org-e-groff-registered-references nil)
+	    (org-e-groff-special-content nil))
+	(org-export-to-file
+	 'e-groff outfile subtreep visible-only body-only ext-plist)))))
 
 (defun org-e-groff-export-to-pdf
-  (&optional subtreep visible-only body-only ext-plist)
+  (&optional async subtreep visible-only body-only ext-plist)
   "Export current buffer to Groff then process through to PDF.
 
 If narrowing is active in the current buffer, only export its
@@ -1922,6 +1937,10 @@ narrowed part.
 
 If a region is active, export that region.
 
+A non-nil optional argument ASYNC means the process should happen
+asynchronously.  The resulting file should be accessible through
+the `org-export-stack' interface.
+
 When optional argument SUBTREEP is non-nil, export the sub-tree
 at point, extracting information from the headline properties
 first.
@@ -1935,8 +1954,18 @@ file-local settings.
 
 Return PDF file's name."
   (interactive)
-  (org-e-groff-compile
-   (org-e-groff-export-to-groff subtreep visible-only body-only ext-plist)))
+  (if async
+      (let ((outfile (org-export-output-file-name ".groff" subtreep)))
+	(org-export-async-start
+	    (lambda (f) (org-export-add-to-stack f 'e-groff))
+	  `(expand-file-name
+	    (org-e-groff-compile
+	     (org-export-to-file
+	      'e-groff ,outfile ,subtreep ,visible-only ,body-only
+	      ',ext-plist)))))
+    (org-e-groff-compile
+     (org-e-groff-export-to-groff
+      nil subtreep visible-only body-only ext-plist))))
 
 (defun org-e-groff-compile (file)
   "Compile a Groff file.
diff --git a/contrib/lisp/org-e-html.el b/contrib/lisp/org-e-html.el
index ce71769ae..766592acd 100644
--- a/contrib/lisp/org-e-html.el
+++ b/contrib/lisp/org-e-html.el
@@ -108,7 +108,9 @@
       ((?H "To temporary buffer" org-e-html-export-as-html)
        (?h "To file" org-e-html-export-to-html)
        (?o "To file and open"
-	   (lambda (s v b) (org-open-file (org-e-html-export-to-html s v b))))))
+	   (lambda (a s v b)
+	     (if a (org-e-html-export-to-html t s v b)
+	       (org-open-file (org-e-html-export-to-html nil s v b)))))))
   :options-alist
   ;; FIXME: Prefix KEYWORD and OPTION with "HTML_".  Prefix
   ;; corresponding properties with `:html-".  If such a renaming is
@@ -2746,7 +2748,7 @@ contextual information."
 
 ;;;###autoload
 (defun org-e-html-export-as-html
-  (&optional subtreep visible-only body-only ext-plist)
+  (&optional async subtreep visible-only body-only ext-plist)
   "Export current buffer to an HTML buffer.
 
 If narrowing is active in the current buffer, only export its
@@ -2754,6 +2756,10 @@ narrowed part.
 
 If a region is active, export that region.
 
+A non-nil optional argument ASYNC means the process should happen
+asynchronously.  The resulting buffer should be accessible
+through the `org-export-stack' interface.
+
 When optional argument SUBTREEP is non-nil, export the sub-tree
 at point, extracting information from the headline properties
 first.
@@ -2772,18 +2778,28 @@ Export is done in a buffer named \"*Org E-HTML Export*\", which
 will be displayed when `org-export-show-temporary-export-buffer'
 is non-nil."
   (interactive)
-  (let ((outbuf
-	 (org-export-to-buffer
-	  'e-html "*Org E-HTML Export*"
-	  subtreep visible-only body-only ext-plist)))
-    ;; Set major mode.
-    (with-current-buffer outbuf (nxml-mode))
-    (when org-export-show-temporary-export-buffer
-      (switch-to-buffer-other-window outbuf))))
+  (if async
+      (org-export-async-start
+	  (lambda (output)
+	    (with-current-buffer (get-buffer-create "*Org E-HTML Export*")
+	      (erase-buffer)
+	      (insert output)
+	      (goto-char (point-min))
+	      (nxml-mode)
+	      (when org-export-show-temporary-export-buffer
+		(org-export-add-to-stack (current-buffer) 'e-html))))
+	`(org-export-as 'e-html ,subtreep ,visible-only ,body-only ',ext-plist))
+    (let ((outbuf (org-export-to-buffer
+		   'e-html "*Org E-HTML Export*"
+		   subtreep visible-only body-only ext-plist)))
+      ;; Set major mode.
+      (with-current-buffer outbuf (nxml-mode))
+      (when org-export-show-temporary-export-buffer
+	(switch-to-buffer-other-window outbuf)))))
 
 ;;;###autoload
 (defun org-e-html-export-to-html
-  (&optional subtreep visible-only body-only ext-plist)
+  (&optional async subtreep visible-only body-only ext-plist)
   "Export current buffer to a HTML file.
 
 If narrowing is active in the current buffer, only export its
@@ -2791,6 +2807,10 @@ narrowed part.
 
 If a region is active, export that region.
 
+A non-nil optional argument ASYNC means the process should happen
+asynchronously.  The resulting file should be accessible through
+the `org-export-stack' interface.
+
 When optional argument SUBTREEP is non-nil, export the sub-tree
 at point, extracting information from the headline properties
 first.
@@ -2810,8 +2830,16 @@ Return output file's name."
   (let* ((extension (concat "." org-e-html-extension))
 	 (file (org-export-output-file-name extension subtreep))
 	 (org-export-coding-system org-e-html-coding-system))
-    (org-export-to-file
-     'e-html file subtreep visible-only body-only ext-plist)))
+    (if async
+	(org-export-async-start
+	    (lambda (f) (org-export-add-to-stack f 'e-latex))
+	  (let ((org-export-coding-system org-e-html-coding-system))
+	    `(expand-file-name
+	      (org-export-to-file
+	       'e-html ,file ,subtreep ,visible-only ,body-only ',ext-plist))))
+      (let ((org-export-coding-system org-e-html-coding-system))
+	(org-export-to-file
+	 'e-html file subtreep visible-only body-only ext-plist)))))
 
 ;;;###autoload
 (defun org-e-html-publish-to-html (plist filename pub-dir)
diff --git a/contrib/lisp/org-e-icalendar.el b/contrib/lisp/org-e-icalendar.el
index 0f2905a1a..6599bf9be 100644
--- a/contrib/lisp/org-e-icalendar.el
+++ b/contrib/lisp/org-e-icalendar.el
@@ -274,12 +274,11 @@ re-read the iCalendar file.")
   ((:filter-headline . org-e-icalendar-clear-blank-lines))
   :menu-entry
   (?c "Export to iCalendar"
-      ((?f "Current file"
-	   (lambda (s v b) (org-e-icalendar-export-to-ics s v b)))
+      ((?f "Current file" org-e-icalendar-export-to-ics)
        (?a "All agenda files"
-	   (lambda (s v b) (org-e-icalendar-export-agenda-files)))
+	   (lambda (a s v b) (org-e-icalendar-export-agenda-files a)))
        (?c "Combine all agenda files"
-	   (lambda (s v b) (org-e-icalendar-combine-agenda-files))))))
+	   (lambda (a s v b) (org-e-icalendar-combine-agenda-files a))))))
 
 
 
@@ -789,7 +788,8 @@ CALSCALE:GREGORIAN\n"
 ;;; Interactive Functions
 
 ;;;###autoload
-(defun org-e-icalendar-export-to-ics (&optional subtreep visible-only body-only)
+(defun org-e-icalendar-export-to-ics
+  (&optional async subtreep visible-only body-only)
   "Export current buffer to an iCalendar file.
 
 If narrowing is active in the current buffer, only export its
@@ -797,6 +797,10 @@ narrowed part.
 
 If a region is active, export that region.
 
+A non-nil optional argument ASYNC means the process should happen
+asynchronously.  The resulting file should be accessible through
+the `org-export-stack' interface.
+
 When optional argument SUBTREEP is non-nil, export the sub-tree
 at point, extracting information from the headline properties
 first.
@@ -814,35 +818,76 @@ Return ICS file name."
       (org-e-icalendar-create-uid file 'warn-user)))
   ;; Export part.  Since this back-end is backed up by `e-ascii',
   ;; ensure links will not be collected at the end of sections.
-  (let ((outfile (org-export-output-file-name ".ics" subtreep))
-	(org-e-ascii-links-to-notes nil))
-    (org-export-to-file 'e-icalendar outfile subtreep visible-only body-only
-			'(:ascii-charset utf-8))
-    (run-hook-with-args 'org-e-icalendar-after-save-hook outfile)
-    outfile))
+  (let ((outfile (org-export-output-file-name ".ics" subtreep)))
+    (if async
+	(org-export-async-start
+	    (lambda (f)
+	      (org-export-add-to-stack f 'e-icalendar)
+	      (run-hook-with-args 'org-e-icalendar-after-save-hook f))
+	  `(let ((org-e-ascii-links-to-notes nil))
+	     (expand-file-name
+	      (org-export-to-file
+	       'e-icalendar ,outfile ,subtreep ,visible-only ,body-only
+	       '(:ascii-charset utf-8)))))
+      (let ((org-e-ascii-links-to-notes nil))
+	(org-export-to-file 'e-icalendar outfile subtreep visible-only body-only
+			    '(:ascii-charset utf-8)))
+      (run-hook-with-args 'org-e-icalendar-after-save-hook outfile)
+      outfile)))
 
 ;;;###autoload
-(defun org-e-icalendar-export-agenda-files ()
-  "Export all agenda files to iCalendar files."
+(defun org-e-icalendar-export-agenda-files (&optional async)
+  "Export all agenda files to iCalendar files.
+When optional argument ASYNC is non-nil, export happens in an
+external process."
   (interactive)
-  (let ((files (org-agenda-files t)))
-    (org-agenda-prepare-buffers files)
-    (unwind-protect
-	(mapc (lambda (file)
-		(catch 'nextfile
-		  (org-check-agenda-file file)
-		  (with-current-buffer (org-get-agenda-file-buffer file)
-		    (org-e-icalendar-export-to-ics))))
-	      files)
-      (org-release-buffers org-agenda-new-buffers))))
+  (if async
+      ;; Asynchronous export is not interactive, so we will not call
+      ;; `org-check-agenda-file'.  Instead we remove any non-existent
+      ;; agenda file from the list.
+      (let ((files (org-remove-if-not 'file-exists-p (org-agenda-files t))))
+	(org-export-async-start
+	    (lambda (results)
+	      (mapc (lambda (f) (org-export-add-to-stack f 'icalendar))
+		    results))
+	  `(let (output-files)
+	     (mapc (lambda (file)
+		     (with-current-buffer (org-get-agenda-file-buffer file)
+		       (push (expand-file-name (org-e-icalendar-export-to-ics))
+			     output-files)))
+		   ',files)
+	     output-files)))
+    (let ((files (org-agenda-files t)))
+      (org-agenda-prepare-buffers files)
+      (unwind-protect
+	  (mapc (lambda (file)
+		  (catch 'nextfile
+		    (org-check-agenda-file file)
+		    (with-current-buffer (org-get-agenda-file-buffer file)
+		      (org-e-icalendar-export-to-ics))))
+		files)
+	(org-release-buffers org-agenda-new-buffers)))))
 
 ;;;###autoload
-(defun org-e-icalendar-combine-agenda-files ()
+(defun org-e-icalendar-combine-agenda-files (&optional async)
   "Combine all agenda files into a single iCalendar file.
-The file is stored under the name
+
+A non-nil optional argument ASYNC means the process should happen
+asynchronously.  The resulting file should be accessible through
+the `org-export-stack' interface.
+
+The file is stored under the name chosen in
 `org-e-icalendar-combined-agenda-file'."
   (interactive)
-  (apply 'org-e-icalendar--combine-files nil (org-agenda-files t)))
+  (if async
+      (let ((files (org-remove-if-not 'file-exists-p (org-agenda-files t))))
+	(org-export-async-start
+	    (lambda (dummy)
+	      (org-export-add-to-stack
+	       (expand-file-name org-e-icalendar-combined-agenda-file)
+	       'e-icalendar))
+	  `(apply 'org-e-icalendar--combine-files nil ',files)))
+    (apply 'org-e-icalendar--combine-files nil (org-agenda-files t))))
 
 (defun org-e-icalendar-export-current-agenda ()
   "Export current agenda view to an iCalendar file.
diff --git a/contrib/lisp/org-e-latex.el b/contrib/lisp/org-e-latex.el
index 97a070ce1..8a4865daf 100644
--- a/contrib/lisp/org-e-latex.el
+++ b/contrib/lisp/org-e-latex.el
@@ -156,7 +156,9 @@
        (?l "As TEX file" org-e-latex-export-to-latex)
        (?p "As PDF file" org-e-latex-export-to-pdf)
        (?o "As PDF file and open"
-	   (lambda (s v b) (org-open-file (org-e-latex-export-to-pdf s v b))))))
+	   (lambda (a s v b)
+	     (if a (org-e-latex-export-to-pdf t s v b)
+	       (org-open-file (org-e-latex-export-to-pdf nil s v b)))))))
   :options-alist ((:date "DATE" nil org-e-latex-date-format t)
 		  (:latex-class "LATEX_CLASS" nil org-e-latex-default-class t)
 		  (:latex-class-options "LATEX_CLASS_OPTIONS" nil nil t)
@@ -2639,7 +2641,7 @@ contextual information."
 
 ;;;###autoload
 (defun org-e-latex-export-as-latex
-  (&optional subtreep visible-only body-only ext-plist)
+  (&optional async subtreep visible-only body-only ext-plist)
   "Export current buffer as a LaTeX buffer.
 
 If narrowing is active in the current buffer, only export its
@@ -2647,6 +2649,10 @@ narrowed part.
 
 If a region is active, export that region.
 
+A non-nil optional argument ASYNC means the process should happen
+asynchronously.  The resulting buffer should be accessible
+through the `org-export-stack' interface.
+
 When optional argument SUBTREEP is non-nil, export the sub-tree
 at point, extracting information from the headline properties
 first.
@@ -2665,16 +2671,27 @@ Export is done in a buffer named \"*Org E-LATEX Export*\", which
 will be displayed when `org-export-show-temporary-export-buffer'
 is non-nil."
   (interactive)
-  (let ((outbuf (org-export-to-buffer
-		 'e-latex "*Org E-LATEX Export*"
-		 subtreep visible-only body-only ext-plist)))
-    (with-current-buffer outbuf (LaTeX-mode))
-    (when org-export-show-temporary-export-buffer
-      (switch-to-buffer-other-window outbuf))))
+  (if async
+      (org-export-async-start
+	  (lambda (output)
+	    (with-current-buffer (get-buffer-create "*Org E-LATEX Export*")
+	      (erase-buffer)
+	      (insert output)
+	      (goto-char (point-min))
+	      (LaTeX-mode)
+	      (org-export-add-to-stack (current-buffer) 'e-latex)))
+	`(org-export-as 'e-latex ,subtreep ,visible-only ,body-only
+			',ext-plist))
+    (let ((outbuf
+	   (org-export-to-buffer 'e-latex "*Org E-LATEX Export*"
+				 subtreep visible-only body-only ext-plist)))
+      (with-current-buffer outbuf (LaTeX-mode))
+      (when org-export-show-temporary-export-buffer
+	(switch-to-buffer-other-window outbuf)))))
 
 ;;;###autoload
 (defun org-e-latex-export-to-latex
-  (&optional subtreep visible-only body-only ext-plist)
+  (&optional async subtreep visible-only body-only ext-plist)
   "Export current buffer to a LaTeX file.
 
 If narrowing is active in the current buffer, only export its
@@ -2682,6 +2699,10 @@ narrowed part.
 
 If a region is active, export that region.
 
+A non-nil optional argument ASYNC means the process should happen
+asynchronously.  The resulting file should be accessible through
+the `org-export-stack' interface.
+
 When optional argument SUBTREEP is non-nil, export the sub-tree
 at point, extracting information from the headline properties
 first.
@@ -2699,12 +2720,18 @@ file-local settings.
 Return output file's name."
   (interactive)
   (let ((outfile (org-export-output-file-name ".tex" subtreep)))
-    (org-export-to-file
-     'e-latex outfile subtreep visible-only body-only ext-plist)))
+    (if async
+	(org-export-async-start
+	    (lambda (f) (org-export-add-to-stack f 'e-latex))
+	  `(expand-file-name
+	    (org-export-to-file
+	     'e-latex ,outfile ,subtreep ,visible-only ,body-only ',ext-plist)))
+      (org-export-to-file
+       'e-latex outfile subtreep visible-only body-only ext-plist))))
 
 ;;;###autoload
 (defun org-e-latex-export-to-pdf
-  (&optional subtreep visible-only body-only ext-plist)
+  (&optional async subtreep visible-only body-only ext-plist)
   "Export current buffer to LaTeX then process through to PDF.
 
 If narrowing is active in the current buffer, only export its
@@ -2712,6 +2739,10 @@ narrowed part.
 
 If a region is active, export that region.
 
+A non-nil optional argument ASYNC means the process should happen
+asynchronously.  The resulting file should be accessible through
+the `org-export-stack' interface.
+
 When optional argument SUBTREEP is non-nil, export the sub-tree
 at point, extracting information from the headline properties
 first.
@@ -2728,8 +2759,18 @@ file-local settings.
 
 Return PDF file's name."
   (interactive)
-  (org-e-latex-compile
-   (org-e-latex-export-to-latex subtreep visible-only body-only ext-plist)))
+  (if async
+      (let ((outfile (org-export-output-file-name ".tex" subtreep)))
+	(org-export-async-start
+	    (lambda (f) (org-export-add-to-stack f 'e-latex))
+	  `(expand-file-name
+	    (org-e-latex-compile
+	     (org-export-to-file
+	      'e-latex ,outfile ,subtreep ,visible-only ,body-only
+	      ',ext-plist)))))
+    (org-e-latex-compile
+     (org-e-latex-export-to-latex
+      nil subtreep visible-only body-only ext-plist))))
 
 (defun org-e-latex-compile (texfile)
   "Compile a TeX file.
diff --git a/contrib/lisp/org-e-man.el b/contrib/lisp/org-e-man.el
index 2b7037008..f40e4d56a 100644
--- a/contrib/lisp/org-e-man.el
+++ b/contrib/lisp/org-e-man.el
@@ -108,7 +108,9 @@
       ((?m "As MAN file" org-e-man-export-to-man)
        (?p "As PDF file" org-e-man-export-to-pdf)
        (?o "As PDF file and open"
-	   (lambda (s v b) (org-open-file (org-e-man-export-to-pdf s v b))))))
+	   (lambda (a s v b)
+	     (if a (org-e-man-export-to-pdf t s v b)
+	       (org-open-file (org-e-man-export-to-pdf nil s v b)))))))
   :options-alist
   ((:man-class "MAN_CLASS" nil nil t)
    (:man-class-options "MAN_CLASS_OPTIONS" nil nil t)
@@ -1146,7 +1148,7 @@ contextual information."
 ;;; Interactive functions
 
 (defun org-e-man-export-to-man
-  (&optional subtreep visible-only body-only ext-plist)
+  (&optional async subtreep visible-only body-only ext-plist)
   "Export current buffer to a Man file.
 
 If narrowing is active in the current buffer, only export its
@@ -1154,6 +1156,10 @@ narrowed part.
 
 If a region is active, export that region.
 
+A non-nil optional argument ASYNC means the process should happen
+asynchronously.  The resulting file should be accessible through
+the `org-export-stack' interface.
+
 When optional argument SUBTREEP is non-nil, export the sub-tree
 at point, extracting information from the headline properties
 first.
@@ -1171,11 +1177,17 @@ file-local settings.
 Return output file's name."
   (interactive)
   (let ((outfile (org-export-output-file-name ".man" subtreep)))
-    (org-export-to-file
-     'e-man outfile subtreep visible-only body-only ext-plist)))
+    (if async
+	(org-export-async-start
+	    (lambda (f) (org-export-add-to-stack f 'e-man))
+	  `(expand-file-name
+	    (org-export-to-file
+	     'e-man ,outfile ,subtreep ,visible-only ,body-only ',ext-plist)))
+      (org-export-to-file
+       'e-man outfile subtreep visible-only body-only ext-plist))))
 
 (defun org-e-man-export-to-pdf
-  (&optional subtreep visible-only body-only ext-plist)
+  (&optional async subtreep visible-only body-only ext-plist)
   "Export current buffer to Groff then process through to PDF.
 
 If narrowing is active in the current buffer, only export its
@@ -1183,6 +1195,10 @@ narrowed part.
 
 If a region is active, export that region.
 
+A non-nil optional argument ASYNC means the process should happen
+asynchronously.  The resulting file should be accessible through
+the `org-export-stack' interface.
+
 When optional argument SUBTREEP is non-nil, export the sub-tree
 at point, extracting information from the headline properties
 first.
@@ -1199,8 +1215,17 @@ file-local settings.
 
 Return PDF file's name."
   (interactive)
-  (org-e-man-compile
-   (org-e-man-export-to-man subtreep visible-only body-only ext-plist)))
+  (if async
+      (let ((outfile (org-export-output-file-name ".man" subtreep)))
+	(org-export-async-start
+	    (lambda (f) (org-export-add-to-stack f 'e-man))
+	  `(expand-file-name
+	    (org-e-man-compile
+	     (org-export-to-file
+	      'e-man ,outfile ,subtreep ,visible-only ,body-only
+	      ',ext-plist)))))
+    (org-e-man-compile
+     (org-e-man-export-to-man nil subtreep visible-only body-only ext-plist))))
 
 (defun org-e-man-compile (file)
   "Compile a Groff file.
diff --git a/contrib/lisp/org-e-odt.el b/contrib/lisp/org-e-odt.el
index 7b2525f66..5904fadfd 100644
--- a/contrib/lisp/org-e-odt.el
+++ b/contrib/lisp/org-e-odt.el
@@ -91,8 +91,9 @@
   (?o "Export to ODT"
       ((?o "As ODT file" org-e-odt-export-to-odt)
        (?O "As ODT file and open"
-	   (lambda (s v b)
-	     (org-open-file (org-e-odt-export-to-odt s v b) 'system)))))
+	   (lambda (a s v b)
+	     (if a (org-e-odt-export-to-odt t s v)
+	       (org-open-file (org-e-odt-export-to-odt nil s v) 'system))))))
   :options-alist
   ((:odt-styles-file "ODT_STYLES_FILE" nil nil t)
    (:LaTeX-fragments nil "LaTeX" org-export-with-LaTeX-fragments)))
@@ -3828,8 +3829,7 @@ formula file."
 ;;;; Export to OpenDocument Text
 
 ;;;###autoload
-(defun org-e-odt-export-to-odt
-  (&optional subtreep visible-only body-only ext-plist)
+(defun org-e-odt-export-to-odt (&optional async subtreep visible-only ext-plist)
   "Export current buffer to a HTML file.
 
 If narrowing is active in the current buffer, only export its
@@ -3837,6 +3837,10 @@ narrowed part.
 
 If a region is active, export that region.
 
+A non-nil optional argument ASYNC means the process should happen
+asynchronously.  The resulting file should be accessible through
+the `org-export-stack' interface.
+
 When optional argument SUBTREEP is non-nil, export the sub-tree
 at point, extracting information from the headline properties
 first.
@@ -3844,31 +3848,52 @@ first.
 When optional argument VISIBLE-ONLY is non-nil, don't export
 contents of hidden elements.
 
-When optional argument BODY-ONLY is non-nil, only write code
-between \"\\begin{document}\" and \"\\end{document}\".
-
 EXT-PLIST, when provided, is a property list with external
 parameters overriding Org default settings, but still inferior to
 file-local settings.
 
 Return output file's name."
   (interactive)
-  (org-e-odt--export-wrap
-   (org-export-output-file-name ".odt" subtreep)
-   (let* ((org-e-odt-embedded-images-count 0)
-	  (org-e-odt-embedded-formulas-count 0)
-	  (org-e-odt-automatic-styles nil)
-	  (org-e-odt-object-counters nil)
-	  ;; Let `htmlfontify' know that we are interested in collecting
-	  ;; styles.
-	  (hfy-user-sheet-assoc nil))
-     ;; Initialize content.xml and kick-off the export process.
-     (let ((out-buf (progn
-		      (require 'nxml-mode)
-		      (let ((nxml-auto-insert-xml-declaration-flag nil))
-			(find-file-noselect
-			 (concat org-e-odt-zip-dir "content.xml") t)))))
-       (org-export-to-buffer 'e-odt out-buf subtreep visible-only body-only)))))
+  (let ((outfile (org-export-output-file-name ".odt" subtreep)))
+    (if async
+	(org-export-async-start (lambda (f) (org-export-add-to-stack f 'e-odt))
+	  `(expand-file-name
+	    (org-e-odt--export-wrap
+	     ,outfile
+	     (let* ((org-e-odt-embedded-images-count 0)
+		    (org-e-odt-embedded-formulas-count 0)
+		    (org-e-odt-automatic-styles nil)
+		    (org-e-odt-object-counters nil)
+		    ;; Let `htmlfontify' know that we are interested in
+		    ;; collecting styles.
+		    (hfy-user-sheet-assoc nil))
+	       ;; Initialize content.xml and kick-off the export
+	       ;; process.
+	       (let ((out-buf
+		      (progn
+			(require 'nxml-mode)
+			(let ((nxml-auto-insert-xml-declaration-flag nil))
+			  (find-file-noselect
+			   (concat org-e-odt-zip-dir "content.xml") t)))))
+		 (org-export-to-buffer
+		  'e-odt out-buf ,subtreep ,visible-only nil ',ext-plist))))))
+      (org-e-odt--export-wrap
+       outfile
+       (let* ((org-e-odt-embedded-images-count 0)
+	      (org-e-odt-embedded-formulas-count 0)
+	      (org-e-odt-automatic-styles nil)
+	      (org-e-odt-object-counters nil)
+	      ;; Let `htmlfontify' know that we are interested in collecting
+	      ;; styles.
+	      (hfy-user-sheet-assoc nil))
+	 ;; Initialize content.xml and kick-off the export process.
+	 (let ((out-buf (progn
+			  (require 'nxml-mode)
+			  (let ((nxml-auto-insert-xml-declaration-flag nil))
+			    (find-file-noselect
+			     (concat org-e-odt-zip-dir "content.xml") t)))))
+	   (org-export-to-buffer
+	    'e-odt out-buf subtreep visible-only nil ext-plist)))))))
 
 
 ;;;; Convert between OpenDocument and other formats
diff --git a/contrib/lisp/org-e-texinfo.el b/contrib/lisp/org-e-texinfo.el
index 0ac5473cc..26d2dfa0b 100644
--- a/contrib/lisp/org-e-texinfo.el
+++ b/contrib/lisp/org-e-texinfo.el
@@ -1657,7 +1657,7 @@ contextual information."
 ;;; Interactive functions
 
 (defun org-e-texinfo-export-to-texinfo
-  (&optional subtreep visible-only body-only ext-plist)
+  (&optional async subtreep visible-only body-only ext-plist)
   "Export current buffer to a Texinfo file.
 
 If narrowing is active in the current buffer, only export its
@@ -1665,6 +1665,10 @@ narrowed part.
 
 If a region is active, export that region.
 
+A non-nil optional argument ASYNC means the process should happen
+asynchronously.  The resulting file should be accessible through
+the `org-export-stack' interface.
+
 When optional argument SUBTREEP is non-nil, export the sub-tree
 at point, extracting information from the headline properties
 first.
@@ -1682,11 +1686,18 @@ file-local settings.
 Return output file's name."
   (interactive)
   (let ((outfile (org-export-output-file-name ".texi" subtreep)))
-    (org-export-to-file
-     'e-texinfo outfile subtreep visible-only body-only ext-plist)))
+    (if async
+	(org-export-async-start
+	    (lambda (f) (org-export-add-to-stack f 'e-texinfo))
+	  `(expand-file-name
+	    (org-export-to-file
+	     'e-texinfo ,outfile ,subtreep ,visible-only ,body-only
+	     ',ext-plist)))
+      (org-export-to-file
+       'e-texinfo outfile subtreep visible-only body-only ext-plist))))
 
 (defun org-e-texinfo-export-to-info
-  (&optional subtreep visible-only body-only ext-plist)
+  (&optional async subtreep visible-only body-only ext-plist)
   "Export current buffer to Texinfo then process through to INFO.
 
 If narrowing is active in the current buffer, only export its
@@ -1694,6 +1705,10 @@ narrowed part.
 
 If a region is active, export that region.
 
+A non-nil optional argument ASYNC means the process should happen
+asynchronously.  The resulting file should be accessible through
+the `org-export-stack' interface.
+
 When optional argument SUBTREEP is non-nil, export the sub-tree
 at point, extracting information from the headline properties
 first.
@@ -1713,8 +1728,18 @@ directory.
 
 Return INFO file's name."
   (interactive)
-  (org-e-texinfo-compile
-   (org-e-texinfo-export-to-texinfo subtreep visible-only body-only ext-plist)))
+  (if async
+      (let ((outfile (org-export-output-file-name ".texi" subtreep)))
+	(org-export-async-start
+	    (lambda (f) (org-export-add-to-stack f 'e-texinfo))
+	  `(expand-file-name
+	    (org-e-texinfo-compile
+	     (org-export-to-file
+	      'e-texinfo ,outfile ,subtreep ,visible-only ,body-only
+	      ',ext-plist)))))
+    (org-e-texinfo-compile
+     (org-e-texinfo-export-to-texinfo
+      nil subtreep visible-only body-only ext-plist))))
 
 (defun org-e-texinfo-compile (file)
   "Compile a texinfo file.
diff --git a/contrib/lisp/org-md.el b/contrib/lisp/org-md.el
index d2bb7fc79..d1ac54714 100644
--- a/contrib/lisp/org-md.el
+++ b/contrib/lisp/org-md.el
@@ -59,10 +59,12 @@ This variable can be set to either `atx' or `setext'."
   :menu-entry
   (?m "Export to Markdown"
       ((?M "To temporary buffer"
-	   (lambda (s v b) (org-md-export-as-markdown s v)))
-       (?m "To file" (lambda (s v b) (org-md-export-to-markdown s v)))
+	   (lambda (a s v b) (org-md-export-as-markdown a s v)))
+       (?m "To file" (lambda (a s v b) (org-md-export-to-markdown a s v)))
        (?o "To file and open"
-	   (lambda (s v b) (org-open-file (org-md-export-to-markdown s v))))))
+	   (lambda (a s v b)
+	     (if a (org-md-export-to-markdown t s v)
+	       (org-open-file (org-md-export-to-markdown nil s v)))))))
   :translate-alist ((bold . org-md-bold)
 		    (code . org-md-verbatim)
 		    (example-block . org-md-example-block)
@@ -411,7 +413,7 @@ as a communication channel."
 ;;; Interactive function
 
 ;;;###autoload
-(defun org-md-export-as-markdown (&optional subtreep visible-only)
+(defun org-md-export-as-markdown (&optional async subtreep visible-only)
   "Export current buffer to a text buffer.
 
 If narrowing is active in the current buffer, only export its
@@ -419,6 +421,10 @@ narrowed part.
 
 If a region is active, export that region.
 
+A non-nil optional argument ASYNC means the process should happen
+asynchronously.  The resulting buffer should be accessible
+through the `org-export-stack' interface.
+
 When optional argument SUBTREEP is non-nil, export the sub-tree
 at point, extracting information from the headline properties
 first.
@@ -430,15 +436,25 @@ Export is done in a buffer named \"*Org MD Export*\", which will
 be displayed when `org-export-show-temporary-export-buffer' is
 non-nil."
   (interactive)
-  (let ((outbuf (org-export-to-buffer
-		 'md "*Org MD Export*" subtreep visible-only)))
-    (with-current-buffer outbuf (text-mode))
-    (when org-export-show-temporary-export-buffer
-      (switch-to-buffer-other-window outbuf))))
+  (if async
+      (org-export-async-start
+	  (lambda (output)
+	    (with-current-buffer (get-buffer-create "*Org MD Export*")
+	      (erase-buffer)
+	      (insert output)
+	      (goto-char (point-min))
+	      (text-mode)
+	      (org-export-add-to-stack (current-buffer) 'md)))
+	`(org-export-as 'md ,subtreep ,visible-only))
+    (let ((outbuf (org-export-to-buffer
+		   'md "*Org MD Export*" subtreep visible-only)))
+      (with-current-buffer outbuf (text-mode))
+      (when org-export-show-temporary-export-buffer
+	(switch-to-buffer-other-window outbuf)))))
 
 
 ;;;###autoload
-(defun org-md-export-to-markdown (&optional subtreep visible-only)
+(defun org-md-export-to-markdown (&optional async subtreep visible-only)
   "Export current buffer to a Markdown file.
 
 If narrowing is active in the current buffer, only export its
@@ -446,6 +462,10 @@ narrowed part.
 
 If a region is active, export that region.
 
+A non-nil optional argument ASYNC means the process should happen
+asynchronously.  The resulting file should be accessible through
+the `org-export-stack' interface.
+
 When optional argument SUBTREEP is non-nil, export the sub-tree
 at point, extracting information from the headline properties
 first.
@@ -456,7 +476,12 @@ contents of hidden elements.
 Return output file's name."
   (interactive)
   (let ((outfile (org-export-output-file-name ".md" subtreep)))
-    (org-export-to-file 'md outfile subtreep visible-only)))
+    (if async
+	(org-export-async-start
+	    (lambda (f) (org-export-add-to-stack f 'md))
+	  `(expand-file-name
+	    (org-export-to-file 'md ,outfile ,subtreep ,visible-only)))
+      (org-export-to-file 'md outfile subtreep visible-only))))
 
 
 (provide 'org-md)
-- 
2.11.4.GIT