From c8163e39f7ddd46b5883b0023651710763c8e54b Mon Sep 17 00:00:00 2001
From: Mark Nudelman <markn@greenwoodsoftware.com>
Date: Fri, 21 Oct 2022 16:27:27 -0700
Subject: [PATCH 31/48] lesstest: Verify that the less binary is built with
 -DLESSTEST.

---
 lesstest/maketest | 10 ++++++++++
 lesstest/runtest  | 17 ++++++++++++-----
 lesstest/term.c   |  6 +++---
 optfunc.c         |  3 +++
 4 files changed, 28 insertions(+), 8 deletions(-)

diff --git a/lesstest/maketest b/lesstest/maketest
index 9f3b848..ae332ee 100755
--- a/lesstest/maketest
+++ b/lesstest/maketest
@@ -21,6 +21,10 @@ sub main {
 	my $ls_opts   = opts($opt{S} or "");
 	my $ltfile    = $opt{o};
 	my $linked = 0;
+	if (not less_is_test($less)) {
+		print "$less is not compiled to support LESSTEST\n";
+		exit 1;
+	}
 	if ($textfile =~ m|/|) {
 		my ($basename) = $textfile =~ m|^.*/([^/]+)$|;
 		if (not link $textfile, $basename) {
@@ -54,3 +58,9 @@ sub opts {
 	$opts = "-$opts" if $opts =~ /^[^-]/;
 	return $opts;
 }
+
+sub less_is_test {
+	my ($less) = @_;
+	my $ver = `$less -V`;
+	return $ver =~ /LESSTEST/;
+}
diff --git a/lesstest/runtest b/lesstest/runtest
index 625c95c..37fb3a3 100755
--- a/lesstest/runtest
+++ b/lesstest/runtest
@@ -31,11 +31,12 @@ sub main {
 	$err_only   = $opt{E} ? 2 : $opt{e} ? 1 : 0;
 	$lt_opts = "-$lt_opts" if $lt_opts =~ /^[^-]/;
 	$lt_opts .= ($err_only == 2) ? " -E" : $err_only ? " -e" : "";
-	die "cannot execute $lesstest"   if not -x $lesstest;
-	die "cannot execute $lt_screen"  if not -x $lt_screen;
-	die "cannot execute $less"       if not -x $less;
-	die "cannot create $rundir" if system "rm -rf '$rundir' && mkdir -p '$rundir'";
-	die "cannot chdir to $rundir: $!" if not chdir $rundir;
+	die "cannot execute $lesstest: $!"   if not -x $lesstest;
+	die "cannot execute $lt_screen: $!"  if not -x $lt_screen;
+	die "cannot execute $less: $!"       if not -x $less;
+	die "$less is not compiled to support LESSTEST" if not less_is_test($less);
+	die "cannot create $rundir: $!"      if system "rm -rf '$rundir' && mkdir -p '$rundir'";
+	die "cannot chdir to $rundir: $!"    if not chdir $rundir;
 
 	my $errs = 0;
 	foreach my $file (@ARGV) {
@@ -94,3 +95,9 @@ sub rfile {
 	$file = "$cwd/$file" unless $file =~ m|^/|;
 	return $file;
 }
+
+sub less_is_test {
+	my ($less) = @_;
+	my $ver = `$less -V`;
+	return $ver =~ /LESSTEST/;
+}
diff --git a/lesstest/term.c b/lesstest/term.c
index a6ffe25..bb073d8 100644
--- a/lesstest/term.c
+++ b/lesstest/term.c
@@ -37,9 +37,9 @@ static void setup_mode(char* enter_cap, char* exit_cap, char** enter_str, char**
 }
 
 static char* ltgetstr(char* id, char** area) {
-    char* str = tgetstr(id, area);
-    if (str == NULL) str = "";
-    return str;
+	char* str = tgetstr(id, area);
+	if (str == NULL) str = "";
+	return str;
 }
 
 int setup_term(void) {
diff --git a/optfunc.c b/optfunc.c
index a1d990d..7384a5e 100644
--- a/optfunc.c
+++ b/optfunc.c
@@ -552,6 +552,9 @@ opt__V(type, s)
 			putstr("** and may not function correctly.\n");
 			putstr("** Obtain release builds from the web page below.\n\n");
 		}
+#if LESSTEST
+		putstr("This build supports LESSTEST.\n");
+#endif /*LESSTEST*/
 		putstr("less comes with NO WARRANTY, to the extent permitted by law.\n");
 		putstr("For information about the terms of redistribution,\n");
 		putstr("see the file named README in the less distribution.\n");
-- 
2.27.0