Backport upstream fix for "lesspipe may contain ".sh" extension"

Also use commit date for "Oct 15 2022 - 3.1.9-17" commit to quash
rpmlint error.

Resolves: BZ 2256374

source-highlight-bz2256374-lesspipe_sh.patch

@@ -0,0 +1,39 @@
+commit 8be2bee7f6861fd27d5c181b15d3126fc7dbf73b
+Author: Keith Seitz <keiths@redhat.com>
+Date:   Sat Jan 20 09:25:05 2024 -0700
+
+    lesspipe may contain ".sh" extension
+    
+    On Fedora, the "lesspipe" script is actually called
+    "lesspipe.sh". This patch proposes to use "$(which NAME)"
+    to figure out the actual name of the script to use.
+    
+    If neither "lesspipe" nor "lesspipe.sh" exists in $PATH,
+    the patch simply uses "lesspipe", preserving the current behavior.
+    
+    It was based on the 3.1.9 release tarball, but should
+    apply cleanly to current git.
+    
+    This was reported as Fedora bugzilla 2256374.
+
+diff --git a/src/src-hilite-lesspipe.sh.in b/src/src-hilite-lesspipe.sh.in
+index eb5c3ee..76231c7 100644
+--- a/src/src-hilite-lesspipe.sh.in
++++ b/src/src-hilite-lesspipe.sh.in
+@@ -7,7 +7,15 @@ for source in "$@"; do
+ 	*Makefile|*makefile) 
+         source-highlight --failsafe -f esc --lang-def=makefile.lang --style-file=esc.style -i "$source" ;;
+ 	*.tar|*.tgz|*.gz|*.bz2|*.xz)
+-        lesspipe "$source" ;;
++	# The "lesspipe" script may or may not have ".sh" extension.
++	lesspipe=$(which lesspipe 2>/dev/null)
++	if [ -z "$lesspipe" ]; then
++	    lesspipe=$(which lesspipe.sh 2>/dev/null)
++	    if [ -z "$lesspipe" ]; then
++		lesspipe="lesspipe"
++	    fi
++	fi
++        $lesspipe "$source" ;;
+         *) source-highlight --failsafe --infer-lang -f esc --style-file=esc.style -i "$source" ;;
+     esac
+ done

source-highlight.spec

@@ -1,7 +1,7 @@
 Summary: Produces a document with syntax highlighting
 Name: source-highlight
 Version: 3.1.9
-Release: 20%{?dist}
+Release: 21%{?dist}
 License: GPL-3.0-or-later AND GFDL-1.1-or-later AND LicenseRef-Fedora-Public-Domain AND GPL-2.0-only AND GPL-3.0-only AND GPL-3.0-or-later WITH Bison-exception-2.2
 Source0: ftp://ftp.gnu.org/gnu/src-highlite/%{name}-%{version}.tar.gz
 Source1: ftp://ftp.gnu.org/gnu/src-highlite/%{name}-%{version}.tar.gz.sig
@@ -9,6 +9,7 @@ URL: http://www.gnu.org/software/src-highlite/
 # Taken from https://git.savannah.gnu.org/cgit/src-highlite.git/patch/?id=904949c9026cb772dc93fbe0947a252ef47127f4
 # and slightly adapted
 Patch0: 904949c9026cb772dc93fbe0947a252ef47127f4.patch
+Patch1: source-highlight-bz2256374-lesspipe_sh.patch
 BuildRequires: make
 BuildRequires: bison, flex, boost-devel
 BuildRequires: help2man, chrpath, pkgconfig(bash-completion)
@@ -94,6 +95,9 @@ rmdir $RPM_BUILD_ROOT%{_sysconfdir}/bash_completion.d
 %{_includedir}/srchilite/*.h
 
 %changelog
+* Mon Jan 22 2024 Keith Seitz <keiths@redhat.com> - 3.1.9-21
+- Added upstream patch to fix BZ 2256374.
+
 * Wed Jan 17 2024 Jonathan Wakely <jwakely@redhat.com> - 3.1.9-20
 - Rebuilt for Boost 1.83
 
@@ -106,7 +110,7 @@ rmdir $RPM_BUILD_ROOT%{_sysconfdir}/bash_completion.d
 * Mon Feb 20 2023 Jonathan Wakely <jwakely@redhat.com> - 3.1.9-18
 - Rebuilt for Boost 1.81
 
-* Sat Oct 15 2022 FeRD (Frank Dana) <ferdnyc@gmail.com> - 3.1.9-17
+* Sun Jan 29 2023 FeRD (Frank Dana) <ferdnyc@gmail.com> - 3.1.9-17
 - Stop adding 'cxx' language mapping (fixed upstream)
 - Add 'rpm-spec' (used in asciidoc) mapping