--- /dev/null
+#!/usr/bin/perl
+eval 'exec /usr/bin/perl -S $0 ${1+"$@"}'
+ if $running_under_some_shell;
+ # this emulates #! processing on NIH machines.
+ # (remove #! line above if indigestible)
+
+eval '$'.$1.'$2;' while $ARGV[0] =~ /^([A-Za-z_0-9]+=)(.*)/ && shift;
+ # process any FOO=bar switches
+
+$, = ' '; # set output field separator
+$\ = "\n"; # set output record separator
+
+$change = 0;
+$status = 0;
+
+line: while (<>) {
+ ($Fld1,$Fld2) = split(' ', $_, 9999);
+ if ($Fld1 =~ /^[1-9][0-9]*\.$/ && $Fld2 =~ /^\[.*\]$/) {
+ if ($change != 0 && $Fld1 + 1 != $change) {
+ print 'bad change number', $Fld1;
+ $status = 1;
+ }
+ $change = $Fld1;
+ }
+}
+
+exit $status;