patch taken from 

http://lists.gnu.org/archive/html/bug-texinfo/2007-10/msg00020.html

(for cmds.c) and adjusted for insertion.c by Norbert Preining

---

 makeinfo/cmds.c      |   10 +++++++---

 makeinfo/insertion.c |    2 +-

 2 files changed, 8 insertions(+), 4 deletions(-)

Index: texinfo-4.11.dfsg.1/makeinfo/cmds.c

===================================================================

--- texinfo-4.11.dfsg.1.orig/makeinfo/cmds.c	2007-07-15 19:36:19.000000000 +0200

+++ texinfo-4.11.dfsg.1/makeinfo/cmds.c	2007-12-19 16:19:24.000000000 +0100

@@ -1637,10 +1637,14 @@

       if (!no_headers && !html)

         {

+          /* use add_* instead of insert_* because otherwise the

+             file header ("This is ...") will end up inside the

+             dir section markers.  */

           kill_self_indent (-1); /* make sure there's no indentation */

-          insert_string ("INFO-DIR-SECTION ");

-          insert_string (line);

-          insert ('\n');

+          cm_noindent (); /* make sure again */

+          add_word ("INFO-DIR-SECTION ");

+          add_word (line);

+          add_char ('\n');

         }

       free (line);

Index: texinfo-4.11.dfsg.1/makeinfo/insertion.c

===================================================================

--- texinfo-4.11.dfsg.1.orig/makeinfo/insertion.c	2007-12-19 16:19:35.000000000 +0100

+++ texinfo-4.11.dfsg.1/makeinfo/insertion.c	2007-12-19 16:19:41.000000000 +0100

@@ -488,7 +488,7 @@

       close_single_paragraph ();

       filling_enabled = no_indent = 0;

       inhibit_paragraph_indentation = 1;

-      insert_string ("START-INFO-DIR-ENTRY\n");

+      add_word ("START-INFO-DIR-ENTRY\n");

       break;

     case documentdescription: