lisp/ox-ascii.el: Fix justification of special blocks

* lisp/ox-ascii.el (org-ascii--current-justification): Fix typos in
the code.
* testing/lisp/test-ox-ascii.el (test-ox-ascii/justify): Add test.

Reported-by: Gregor Zattler <telegraph@gmx.net>
Link: https://orgmode.org/list/87o7ft8gxo.fsf@no.lan

lisp/ox-ascii.el

@@ -633,16 +633,16 @@ INFO is a plist used as a communication channel."
 Return value is a symbol among `left', `center', `right' and
 `full'."
   (or (org-element-lineage-map
-       element
-       (lambda (el)
-         (pcase (org-element-type el)
-           (`center-block 'center)
-           (`special-block
-	    (let ((name (org-element-property :type element)))
-	      (cond ((string= name "JUSTIFYRIGHT") 'right)
-		    ((string= name "JUSTIFYLEFT") 'left))))))
-       '(center-block 'special-block)
-       nil 'first-match)
+          element
+          (lambda (el)
+            (pcase (org-element-type el)
+              (`center-block 'center)
+              (`special-block
+	       (let ((name (org-element-property :type el)))
+	         (cond ((string= name "JUSTIFYRIGHT") 'right)
+		       ((string= name "JUSTIFYLEFT") 'left))))))
+        '(center-block special-block)
+        nil 'first-match)
       ;; default
       'left))
 

testing/lisp/test-ox-ascii.el

@@ -66,5 +66,21 @@
        (search-forward
         "1. bar")))))
 
+(ert-deftest test-ox-ascii/justify ()
+  "Test justification."
+  ;; Right justify.
+  (org-test-with-exported-text
+      'ascii
+      "#+OPTIONS: author:nil *:t
+#+BEGIN_JUSTIFYRIGHT
+left or right
+#+END_JUSTIFYRIGHT
+"
+    (goto-char (point-min))
+    (search-forward
+     "left or right")
+    (should
+     (equal org-ascii-text-width (org-current-text-column)))))
+
 (provide 'test-ox-ascii)
 ;;; test-ox-ascii.el ends here