diff --git a/ChangeLog b/ChangeLog
index 1f618d36..03afd387 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+2000-11-09  Pavel Roskin  <proski@gnu.org>
+
+	* acgeneral.m4 (_AC_COMPUTE_INT_COMPILE): Use ":" instead of
+	"true".
+	* tests/atgeneral.m4 (AT_INIT): Likewise.
+	* tests/tools.at (Syntax of the scripts): Likewise.
+
 2000-11-09  Pavel Roskin  <proski@gnu.org>
 
 	* tests/m4sugar.at (m4_warn): Adjusted to accept stack dump when
diff --git a/acgeneral.m4 b/acgeneral.m4
index 1deacd97..b8f444ce 100644
--- a/acgeneral.m4
+++ b/acgeneral.m4
@@ -3214,13 +3214,13 @@ m4_define([_AC_COMPUTE_INT_COMPILE],
 [# Depending upon the size, compute the lo and hi bounds.
 AC_COMPILE_IFELSE([AC_LANG_BOOL_COMPILE_TRY([$3], [($1) >= 0])],
  [ac_lo=0 ac_try=0
-  while true; do
+  while :; do
     AC_COMPILE_IFELSE([AC_LANG_BOOL_COMPILE_TRY([$3], [($1) <= $ac_try])],
                    [ac_hi=$ac_try; break],
                    [ac_lo=`expr $ac_try + 1`; ac_try=`expr 2 '*' $ac_try + 1`])
   done],
  [ac_hi=-1 ac_try=-1
-  while true; do
+  while :; do
     AC_COMPILE_IFELSE([AC_LANG_BOOL_COMPILE_TRY([$3], [($1) >= $ac_try])],
                       [ac_lo=$ac_try; break],
                       [ac_hi=`expr $ac_try - 1`; ac_try=`expr 2 '*' $ac_try`])
diff --git a/lib/autoconf/general.m4 b/lib/autoconf/general.m4
index 1deacd97..b8f444ce 100644
--- a/lib/autoconf/general.m4
+++ b/lib/autoconf/general.m4
@@ -3214,13 +3214,13 @@ m4_define([_AC_COMPUTE_INT_COMPILE],
 [# Depending upon the size, compute the lo and hi bounds.
 AC_COMPILE_IFELSE([AC_LANG_BOOL_COMPILE_TRY([$3], [($1) >= 0])],
  [ac_lo=0 ac_try=0
-  while true; do
+  while :; do
     AC_COMPILE_IFELSE([AC_LANG_BOOL_COMPILE_TRY([$3], [($1) <= $ac_try])],
                    [ac_hi=$ac_try; break],
                    [ac_lo=`expr $ac_try + 1`; ac_try=`expr 2 '*' $ac_try + 1`])
   done],
  [ac_hi=-1 ac_try=-1
-  while true; do
+  while :; do
     AC_COMPILE_IFELSE([AC_LANG_BOOL_COMPILE_TRY([$3], [($1) >= $ac_try])],
                       [ac_lo=$ac_try; break],
                       [ac_hi=`expr $ac_try - 1`; ac_try=`expr 2 '*' $ac_try`])
diff --git a/lib/autotest/general.m4 b/lib/autotest/general.m4
index 5c3829af..1387b754 100644
--- a/lib/autotest/general.m4
+++ b/lib/autotest/general.m4
@@ -114,7 +114,7 @@ AT_DEFINE([AT_INIT],
 at_stop_on_error=false;
 # Shall we save and check stdout and stderr?
 # -n sets to false
-at_check_stds=true;
+at_check_stds=:;
 # Shall we
 # -s sets to false, and -v to true
 at_verbose=false
diff --git a/tests/atgeneral.m4 b/tests/atgeneral.m4
index 5c3829af..1387b754 100644
--- a/tests/atgeneral.m4
+++ b/tests/atgeneral.m4
@@ -114,7 +114,7 @@ AT_DEFINE([AT_INIT],
 at_stop_on_error=false;
 # Shall we save and check stdout and stderr?
 # -n sets to false
-at_check_stds=true;
+at_check_stds=:;
 # Shall we
 # -s sets to false, and -v to true
 at_verbose=false
diff --git a/tests/tools.at b/tests/tools.at
index d346f4dd..66ddde5e 100644
--- a/tests/tools.at
+++ b/tests/tools.at
@@ -37,7 +37,7 @@ AT_SETUP(Syntax of the scripts)
 # broken /bin/sh loop equally with `false', but it makes it easier to
 # test the robusteness in a good environment: just remove the `-n'.
 AT_DATA(endless.sh,
-[[while true
+[[while :
 do
   :
 done