org-e-ascii: Fix table export bug when ignoring sub/superscript

* contrib/lisp/org-e-ascii.el (org-e-ascii--table-cell-width):
  Refactor code.
* contrib/lisp/org-export.el: Do not normalize contents when expanding
  them, since it will be done at the end of the function, and only for
  elements.

contrib/lisp/org-e-ascii.el

@@ -1068,7 +1068,7 @@ holding contextual information."
 (defun org-e-ascii-dynamic-block (dynamic-block contents info)
   "Transcode a DYNAMIC-BLOCK element from Org to ASCII.
 CONTENTS holds the contents of the block.  INFO is a plist
-holding contextual information.  See `org-export-data'."
+holding contextual information."
   contents)
 
 
@@ -1661,13 +1661,12 @@ are ignored. "
 	 (lambda (row)
 	   (setq max-width
 		 (max (length
-		       (mapconcat
-			(lambda (obj) (org-export-data obj info))
+		       (org-export-data
 			(org-element-contents
 			 (elt (if specialp (car (org-element-contents row))
 				(org-element-contents row))
 			      col))
-			""))
+			info))
 		      max-width))))
 	max-width)))
 

contrib/lisp/org-export.el

@@ -1578,10 +1578,9 @@ Return transcoded string."
            ((not (org-export-interpret-p data info))
             (org-export-expand
              data
-             (org-element-normalize-string
-              (mapconcat (lambda (blob) (org-export-data blob info))
-                         (org-element-contents data)
-                         ""))))
+             (mapconcat (lambda (blob) (org-export-data blob info))
+			(org-element-contents data)
+			"")))
            ;; Secondary string.
            ((not type)
             (mapconcat (lambda (obj) (org-export-data obj info)) data ""))