Editing Module:Yesno

local p = {}

function p.yesno(frame)

    -- defaults
    local retvals = {
        yes   = "yes",
        no    = "",
        ["¬"] = ""
    }

    -- Allow arguments to override defaults. Arguments are taken from
    -- the parent frame; other arguments are ignored.
    local args;
    if frame == mw.getCurrentFrame() then
        -- We're being called via #invoke. If the invoking template passed any args, use
        -- them. Otherwise, use the args that were passed into the template.
        args = frame:getParent().args;
        for k, v in pairs(frame.args) do
            args = frame.args;
            break
        end
    else
        -- We're being called from another module or from the debug console, so assume
        -- the args are passed in directly.
        args = frame;
    end
    
    for k,v in pairs(args) do
        retvals[k] = v
    end

    val = args[1]

    -- First deal with the case if val is nil, then deal with other cases.
    if val == nil then
        return retvals['¬']
    end

    val = val:lower()          -- Make lowercase.
    val = val:match'^%s*(.*%S)' or ''  -- Trim whitespace.

    if val == '' then
        return retvals['blank'] or retvals['no']
    elseif val == 'n' or val == 'no'  or tonumber(val) == 0 then
        return retvals['no']
    elseif val == 'y' or val == 'yes' or tonumber(val) == 1 then
        return retvals['yes']
    elseif val == '¬' then
        return retvals['¬']
    else
        return retvals['def'] or retvals['yes']
    end
end

return p
@@ Line 1: / Line 1: @@
--- Function allowing for consistent treatment of boolean-like wikitext input.
+local p = {}
--- It works similarly to the template {{yesno}}.
-return function (val, default)
+function p.yesno(frame)
-	-- If your wiki uses non-ascii characters for any of "yes", "no", etc., you
-	-- should replace "val:lower()" with "mw.ustring.lower(val)" in the
+    -- defaults
-	-- following line.
+    local retvals = {
-	val = type(val) == 'string' and val:lower() or val
+        yes   = "yes",
-	if val == nil then
+        no    = "",
-		return nil
+        ["¬"] = ""
-	elseif val == true
+    }
-		or val == 'yes'
-		or val == 'y'
+    -- Allow arguments to override defaults. Arguments are taken from
-		or val == 'true'
+    -- the parent frame; other arguments are ignored.
-		or val == 't'
+    local args;
-		or tonumber(val) == 1
+    if frame == mw.getCurrentFrame() then
-	then
+        -- We're being called via #invoke. If the invoking template passed any args, use
-		return true
+        -- them. Otherwise, use the args that were passed into the template.
-	elseif val == false
+        args = frame:getParent().args;
-		or val == 'no'
+        for k, v in pairs(frame.args) do
-		or val == 'n'
+            args = frame.args;
-		or val == 'false'
+            break
-		or val == 'f'
+        end
-		or tonumber(val) == 0
+    else
-	then
+        -- We're being called from another module or from the debug console, so assume
-		return false
+        -- the args are passed in directly.
-	else
+        args = frame;
-		return default
+    end
-	end
+    for k,v in pairs(args) do
+        retvals[k] = v
+    end
+    val = args[1]
+    -- First deal with the case if val is nil, then deal with other cases.
+    if val == nil then
+        return retvals['¬']
+    end
+    val = val:lower()          -- Make lowercase.
+    val = val:match'^%s*(.*%S)' or ''  -- Trim whitespace.
+    if val == '' then
+        return retvals['blank'] or retvals['no']
+    elseif val == 'n' or val == 'no'  or tonumber(val) == 0 then
+        return retvals['no']
+    elseif val == 'y' or val == 'yes' or tonumber(val) == 1 then
+        return retvals['yes']
+    elseif val == '¬' then
+        return retvals['¬']
+    else
+        return retvals['def'] or retvals['yes']
+    end
 end
+return p