Correct how less(1) is used, & catch more(1) bug

The `-r` flag isn't best here. Per the less(1) man page, it's best to
use `-R` to only display the ANSII color escape sequences.

It seems like more(1) doesn't support color escape sequences, or at
least not properly. The display is messed up when using more(1), so
I've just accounted for that. In this situation, just use the `-C`
flag(s).

tests/lenchk

@@ -229,16 +229,20 @@ Main(){
 if [ -t 1 -a "$NoPager" != 'True' ]; then
 	# Prefer less(1), but have more(1) as a fallback.
 	if type -fP less &> /dev/null; then
-		Pager='less'
+		Pager='less -R'
 	elif type -fP more &> /dev/null; then
 		Pager='more'
+
+		if [ "$NoColor" != 'True' ]; then
+			Err 1 'Only more(1) is available -- colors unsupported.'
+		fi
 	else
 		Err 1 'Neither less(1) nor more(1) were found.'
 	fi
 
 	# Redirecting STDERR to address less(1) bug causing summary to display
 	# where it shouldn't; only seems to happen when colorization is enabled.
-	Main 2>&1 | $Pager -r
+	Main 2>&1 | $Pager
 else
 	Main