less.csh: avoid unnecessary stat() call

Resolves: #1321591
Version: 481-3

less.csh

@@ -1,8 +1,14 @@
 # less initialization script (csh)
-if ( -x /usr/bin/lesspipe.sh ) then
-    if ( $?LESSOPEN && { eval 'test ! -z "$LESSOPEN"' } ) then
-        :
-    else  
+
+# All less.*sh files should have the same semantics!
+
+# In case you are curious, the test for non-emptiness is not as easy as in
+# Bourne shell.  This "eval" construct is probably inspired by Stack
+# Overflow question 13343392.
+if ( $?LESSOPEN && { eval 'test ! -z "$LESSOPEN"' } ) then
+    :
+else
+    if ( -x /usr/bin/lesspipe.sh ) then
         setenv LESSOPEN "|/usr/bin/lesspipe.sh %s"
     endif
 endif

less.sh

@@ -1,4 +1,7 @@
 # less initialization script (sh)
+
+# All less.*sh files should have the same semantics!
+
 if [ -z "$LESSOPEN" ] && [ -x /usr/bin/lesspipe.sh ]; then
     export LESSOPEN="|/usr/bin/lesspipe.sh %s"
 fi

less.spec

@@ -1,7 +1,7 @@
 Summary: A text file browser similar to more, but better
 Name: less
 Version: 481
-Release: 2%{?dist}
+Release: 3%{?dist}
 License: GPLv3+ or BSD
 Group: Applications/Text
 Source: http://www.greenwoodsoftware.com/less/%{name}-%{version}.tar.gz
@@ -67,6 +67,10 @@ install -p -m 644 %{SOURCE3} $RPM_BUILD_ROOT/etc/profile.d
 %{_mandir}/man1/*
 
 %changelog
+* Tue Mar 29 2016 Pavel Raiskup <praiskup@redhat.com> - 481-3
+- avoid one ubiquitous stat() call in less.sh and less.csh if possible
+  (rhbz#1321591)
+
 * Thu Feb 04 2016 Fedora Release Engineering <releng@fedoraproject.org> - 481-2
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_24_Mass_Rebuild