2006-05-21  Paul Eggert  <address@hidden>

	* doc/autoconf.texi (Limitations of Usual Tools) <sed>: For
	the HP-UX sed limitation of 99 commands, labels do not count.
	* lib/autoconf/status.m4 (_AC_SED_CMD_LIMIT): Mention that
	in the comment.
	(_AC_OUTPUT_HEADER): Revert the change from 2006-05-19.

Index: doc/autoconf.texi
===================================================================
RCS file: /cvsroot/autoconf/autoconf/doc/autoconf.texi,v
retrieving revision 1.1018
diff -u -r1.1018 autoconf.texi
--- doc/autoconf.texi	20 May 2006 05:39:03 -0000	1.1018
+++ doc/autoconf.texi	22 May 2006 10:18:03 -0000
@@ -13207,7 +13207,8 @@
 Unicos 9 @command{sed} loops endlessly on patterns like @samp{.*\n.*}.
 
 Sed scripts should not use branch labels longer than 8 characters and
-should not contain comments.  HP-UX sed has a limit of 99 commands and
+should not contain comments.  HP-UX sed has a limit of 99 commands
+(not counting @samp{:} commands) and
 48 labels, which can not be circumvented by using more than one script
 file.  It can execute up to 19 reads with the @samp{r} command per cycle.
 
Index: lib/autoconf/status.m4
===================================================================
RCS file: /cvsroot/autoconf/autoconf/lib/autoconf/status.m4,v
retrieving revision 1.103
diff -u -r1.103 status.m4
--- lib/autoconf/status.m4	19 May 2006 21:02:10 -0000	1.103
+++ lib/autoconf/status.m4	22 May 2006 10:18:04 -0000
@@ -303,7 +303,7 @@
 # _AC_SED_CMD_LIMIT
 # -----------------
 # Evaluate to an m4 number equal to the maximum number of commands to put
-# in any single sed program.
+# in any single sed program, not counting ":" commands.
 #
 # Some seds have small command number limits, like on Digital OSF/1 and HP-UX.
 m4_define([_AC_SED_CMD_LIMIT],
@@ -660,7 +660,7 @@
 [s,^[	 #]*u.*,/* & */,]' >>conftest.defines
 
 # Break up conftest.defines:
-ac_max_sed_lines=m4_eval(_AC_SED_CMD_LIMIT - 4)
+ac_max_sed_lines=m4_eval(_AC_SED_CMD_LIMIT - 3)
 
 # First sed command is:	 sed -f defines.sed $ac_file_inputs >"$tmp/out1"
 # Second one is:	 sed -f defines.sed "$tmp/out1" >"$tmp/out2"