2012-09-01  Eli Zaretskii  <eliz@gnu.org>

	* read.c (unescape_char): Advance 'p' after copying the unescaped
	characters.  Otherwise the backslashes are incorrectly erased from
	the original string.

--- a/read.c
+++ b/read.c
@@ -2242,9 +2242,9 @@ unescape_char (char *string, int c)
               /* It is, and there's >1 backslash.  Take half of them.  */
               l /= 2;
               memcpy (p, s, l);
-              p += l;
             }
           s = e;
+          p += l;
         }
 
       *(p++) = *(s++);