2005-10-20  Stepan Kasal  <address@hidden>

	* doc/autoconf.texi (Shell Substitutions}: Document that ${10} is
	not portable; thanks to Paul Eggert and Alexandre.

Index: doc/autoconf.texi
===================================================================
RCS file: /cvsroot/autoconf/autoconf/doc/autoconf.texi,v
retrieving revision 1.930
diff -u -r1.930 autoconf.texi
--- doc/autoconf.texi	19 Oct 2005 22:35:51 -0000	1.930
+++ doc/autoconf.texi	20 Oct 2005 06:29:33 -0000
@@ -6701,7 +6701,7 @@
 your code, rather, require from the user to run the macro with a
 correct current language, and check it with @code{AC_LANG_ASSERT}.
 And anyway, that may help the user understand she is running a Fortran
-macro while expecting a result about her Fortran 77 compiler...
+macro while expecting a result about her Fortran 77 address@hidden
 @end defmac
 
 
@@ -10328,6 +10328,19 @@
 esac
 @end example
 
+
address@hidden address@hidden@}, etc.
+
+The 10th, 11th, @dots{} positional parameters can be accessed only after
+a @code{shift}.  The 7th edition shell reported an error if given @address@hidden@}};
+Solaris 10 /bin/sh still acts that way:
+
address@hidden
+$ @kbd{set 1 2 3 4 5 6 7 8 9 10}
+$ @kbd{echo address@hidden@}}
+bad substitution
address@hidden example
+
 @item address@hidden@var{var}:address@hidden@}
 @c Info cannot handle `:' in index entries.
 @c @cindex address@hidden@var{var}:address@hidden@}
@@ -15812,7 +15825,7 @@
 
 In addition to the change of syntax, the philosphy has changed too:
 while emphasis was put on speed at the expense of accuracy, today's
-Autoconf promotes accuracy of the testing framework at, ahem..., the
+Autoconf promotes accuracy of the testing framework at, address@hidden, the
 expense of speed.