commit 7b9683b

fix tail component replacement in man() for old lua

gsub/gmatch behaved differently prior to lua5.3 and thus cannot be
used with the same semantics in luajit/older lua.

 1@@ -491,7 +491,8 @@ function man(srcs, section)
 2 		end
 3 		local srcsection = section or src:match('[^.]*$')
 4 		local i = src:find('/', 1, true)
 5-		local gz = '$outdir'..src:sub(i):gsub('[^.]*$', srcsection)..'.gz'
 6+		local j = src:reverse():find('.', 1, true)
 7+		local gz = '$outdir'..src:sub(i, #src - j + 1)..srcsection..'.gz'
 8 		build('gzip', gz, src)
 9 		file('share/man/man'..srcsection..'/'..gz:match('[^/]*$'), '644', gz)
10 	end