---- autoconf-2.70/tests/local.at.orig 2021-01-07 20:29:32.906519857 +0100
-+++ autoconf-2.70/tests/local.at 2021-01-07 20:51:45.695966183 +0100
-@@ -351,7 +351,7 @@
+--- autoconf-2.72/tests/local.at.orig 2023-12-22 16:05:20.000000000 +0100
++++ autoconf-2.72/tests/local.at 2023-12-25 17:58:47.286892540 +0100
+@@ -558,7 +558,7 @@ m4_define([AT_CHECK_CONFIGURE],
# Set by AC_OUTPUT.
# - AC_SUBST'ed variables
# (FIXME: Generate a list of these automatically.)
-# - _|@|.[*#?$].|argv|ARGC|LINENO|OLDPWD|PIPESTATUS|RANDOM|SECONDS
+# - _|@|.[*#?$].|argv|ARGC|LINENO|OLDPWD|PIPESTATUS|RANDOM|SECONDS|BASHPID|EPOCHREALTIME|KSH_MATCH
- # |START_TIME|ToD|_AST_FEATURES
+ # |SHLVL|START_TIME|ToD|_AST_FEATURES
# Some variables some shells use and change.
- # `.[*#?$].' catches `$#' etc. which are displayed like this:
-@@ -402,7 +402,7 @@
- [AWK|LEX|LEXLIB|LEX_OUTPUT_ROOT|LN_S|M4|MKDIR_P|RANLIB|SET_MAKE|YACC],
+ # '.[*#?$].' catches '$#' etc. which are displayed like this:
+@@ -611,7 +611,7 @@ if test -f state-env.before && test -f s
+ [EGREP_TRADITIONAL],
[GREP|[EF]GREP|SED],
[[_@]|.[*@%:@?$].],
- [argv|ARGC|LINENO|BASH_ARGC|BASH_ARGV|OLDPWD|PIPESTATUS|RANDOM],
+ [argv|ARGC|LINENO|BASH_ARGC|BASH_ARGV|OLDPWD|PIPESTATUS|RANDOM|BASHPID|EPOCHREALTIME|KSH_MATCH],
- [SECONDS|START_TIME|ToD|_AST_FEATURES]))=' \
+ [SECONDS|SHLVL|START_TIME|ToD|_AST_FEATURES]))=' \
$act_file ||
test $? -eq 1 || echo failed >&2
-@@ -432,7 +432,7 @@
+@@ -641,7 +641,7 @@ fi
# - Variables with unstable values in at least some shells:
# - OLDPWD [bash, zsh]
# - PPID [bash, zsh]
-# - RANDOM [bash, zsh]
+# - RANDOM [bash, zsh, mksh]
# - SECONDS [bash, zsh]
+ # - SHLVL [bash]
# - START_TIME [NetBSD sh]
- # - ToD [NetBSD sh]
-@@ -443,6 +443,9 @@
+@@ -653,6 +653,9 @@ fi
# - BASH_ARGV [bash]
# - LINENO [Posix]
# - _AST_FEATURES [ksh93]
# - Optionally, variables that are expected to vary in a particular test.
# This is controlled by the EXTRA-VARIANCE argument, which is a
# whitespace-separated sequence of tokens. Each token means to ignore
-@@ -481,6 +484,9 @@
+@@ -692,6 +695,9 @@ do
/^PPID=/ d
/^RANDOM=/ d
/^SECONDS=/ d
+ /^BASHPID=/ d
+ /^EPOCHREALTIME=/ d
+ /^KSH_MATCH=/ d
+ /^SHLVL=/ d
/^START_TIME=/ d
/^ToD=/ d
- /'\'\\\$\''=/ d