//maze, //maze3d: Allow non-number seeds

This uses a simple (non-crypto!) hash function to hash non-number 
strings to a number. Existing seeds are *not* affected - they will still 
work as before.

worldeditadditions/utils/strings.lua

@@ -268,3 +268,22 @@ function worldeditadditions.human_time(ms)
 		end
 	end
 end
+
+
+--- Makes a seed from a string.
+-- If the input is a number, it is returned as-is.
+-- If the input is a string and can be converted to a number with tonumber(),
+-- the output of tonumber() is returned.
+-- Otherwise, the string is converted to a number via a simple hashing algorithm
+-- (caution: certainlly NOT crypto-secure!).
+-- @param   {string}    str     The string to convert.
+-- @source https://stackoverflow.com/a/2624210/1460422 The idea came from here
+function worldeditadditions.makeseed(str)
+    if type(str) == "number" then return str end
+    if tonumber(str) ~=  nil then return tonumber(str) end
+    local result = 0
+    for i = 1, #str do
+        result = (result*91) + (string.byte(str:sub(i, i)) * 31)
+    end
+    return result
+end

worldeditadditions_commands/commands/maze.lua

@@ -27,10 +27,7 @@ local function parse_params_maze(params_text, is_3d)
 		path_depth = tonumber(parts[4])
 	end
 	if #parts >= param_index_seed then
-		seed = tonumber(parts[param_index_seed])
+		seed = worldeditadditions.makeseed(parts[param_index_seed])
-		if not seed then
-			return false, "Error: Invalid seed value (seeds may only be integers)."
-		end
 	end
 	
 	replace_node = worldedit.normalize_nodename(replace_node)