fix post-v590 regression in file-types check

Related: RHEL-40257

less-661-pipefix.patch

@@ -0,0 +1,20 @@
+diff -up less-661/os.c.pipefix less-661/os.c
+--- less-661/os.c.pipefix	2024-06-29 19:16:08.000000000 +0200
++++ less-661/os.c	2024-08-10 08:06:14.762224766 +0200
+@@ -80,6 +80,7 @@ extern int exit_F_on_close;
+ extern int follow_mode;
+ extern int scanning_eof;
+ extern char intr_char;
++extern int is_tty;
+ #if !MSDOS_COMPILER
+ extern int tty;
+ #endif
+@@ -237,7 +238,7 @@ start:
+ 	}
+ #endif
+ #if USE_POLL
+-	if (fd != tty && use_poll)
++	if (is_tty && fd != tty && use_poll)
+ 	{
+ 		int ret = check_poll(fd, tty);
+ 		if (ret != 0)

less.spec

@@ -1,7 +1,7 @@
 Summary: A text file browser similar to more, but better
 Name: less
 Version: 661
-Release: 1%{?dist}
+Release: 2%{?dist}
 License: GPL-3.0-only AND BSD-2-Clause
 Source0: https://www.greenwoodsoftware.com/less/%{name}-%{version}.tar.gz
 Source1: lesspipe.sh
@@ -16,6 +16,9 @@ Patch10: less-458-lesskey-usage.patch
 Patch11: less-458-old-bot-in-help.patch
 Patch12: less-436-help.patch
 Patch13: less-661-fix_sast.patch
+# from upstream, for <=661, fixes regression in file-types sanity chack post v590
+# https://github.com/gwsw/less/commit/ed454a217da417dc052723ea70da8efde0f2e66c 
+Patch14: less-661-pipefix.patch
 URL: https://www.greenwoodsoftware.com/less/
 BuildRequires: ncurses-devel
 BuildRequires: autoconf automake libtool
@@ -42,6 +45,7 @@ files, and you'll use it frequently.
 %patch -P 11 -p1 -b .old-bot
 %patch -P 12 -p1 -b .help
 %patch -P 13 -p1 -b .fix_sast
+%patch -P 14 -p1 -b .pipefix
 
 
 %build
@@ -65,6 +69,9 @@ install -p -m 644 %{SOURCE3} $RPM_BUILD_ROOT/etc/profile.d
 %{_mandir}/man1/*
 
 %changelog
+* Sat Aug 10 2024 Michal Hlavinka <mhlavink@redhat.com> - 661-2
+- fix post-v590 regression in file-types check
+
 * Fri Jul 26 2024 Michal Hlavinka <mhlavink@redhat.com> - 661-1
 - fix static analysis findigs (RHEL-40257)
 - updated to 661