prefer 7zip over now outdated p7zip

ChangeLog

@@ -1,6 +1,7 @@
 ****************************************************************************
 # ChangeLog for lesspipe.sh						   #
 ****************************************************************************
+- use 7zip instead of now outdated p7zip if available
 - propagate file extension to newly created temporary files
 - use again csvlook for display of csv files if available
 - use csvtable for tabular display of csv files, needs Text::CSV from perl

README.md

@@ -399,7 +399,8 @@ filtering for certain file types.
 (last checked: Jan 21 2023):
 
 ### 11.1 URLs to some utilities (with last known release)
-- 7zr                  https://sourceforge.net/projects/p7zip/ (2016)
+- 7zz                  https://sourceforge.net/projects/sevenzip/ (2023)
+- 7zr (outdated!)      https://sourceforge.net/projects/p7zip/ (2016)
 - antiword             no longer valid: https://www.winfield.demon.nl/ (2005)
 - cabextract           https://www.cabextract.org.uk/ (2019)
 - catdoc,catppt,xls2csv https://www.wagner.pp.ru/~vitus/software/catdoc/ (2016)

lesspipe.sh

@@ -371,6 +371,7 @@ get_unpack_cmd () {
 			{ has_cmd bsdtar && prog=bsdtar; } ||
 			{ has_cmd cabextract && prog=cabextract; } ;;
 		7z-compressed)
+			{ has_cmd 7zz && prog=7zz; } ||
 			{ has_cmd 7zr && prog=7zr; } ||
 			{ has_cmd 7z && prog=7z; } ||
 			{ has_cmd 7za && prog=7za; } ;;
@@ -657,7 +658,7 @@ isarchive () {
 				istemp cabextract2 "$2" "$3" ;;
 			isoinfo)
 				istemp "isoinfo -i" "$2" "-x$3" ;;
-			7za|7zr)
+			7zz|7za|7zr)
 				istemp "$prog e -so" "$2" "$3"
 		esac
 	else
@@ -679,7 +680,7 @@ isarchive () {
 				isoinfo -d -i "$t"| grep -E '^Joliet' && joliet=J
 				separatorline
 				isoinfo -fR"$joliet" -i "$t" ;;
-			7za|7zr)
+			7zz|7za|7zr)
 				istemp "$prog l" "$2"
 		esac
 	fi