penlight.patch

--- a/lua/pl/tablex.lua	2025-11-23 14:14:55
+++ b/lua/pl/tablex.lua	2025-11-23 14:15:01
@@ -103,8 +103,8 @@
     cache[t] = res
     local mt = getmetatable(t)
     for k,v in pairs(t) do
-        k = cycle_aware_copy(k, cache)
-        v = cycle_aware_copy(v, cache)
+        local k = cycle_aware_copy(k, cache)
+        local v = cycle_aware_copy(v, cache)
         res[k] = v
     end
     setmetatable(res,mt)
--- a/lua/pl/app.lua	2025-11-23 14:15:40
+++ b/lua/pl/app.lua	2025-11-23 14:16:40
@@ -193,6 +193,7 @@
 
     local with_values = {}
     for k,v in pairs(flags_with_values or {}) do
+        local k = k
         if type(k) == "number" then
             k = v
         end
@@ -207,6 +208,7 @@
     else
         valid = {}
         for k,aliasses in pairs(flags_valid) do
+            local k = k
             if type(k) == "number" then         -- array/list entry
                 k = aliasses
             end
--- a/lua/pl/lapp.lua	2025-11-23 14:17:16
+++ b/lua/pl/lapp.lua	2025-11-23 14:17:29
@@ -218,7 +218,7 @@
     for line in lines(str) do
         local res = {}
         local optparm,defval,vtype,constraint,rest
-        line = lstrip(line)
+        local line = lstrip(line)
         local function check(str)
             return match(str,line,res)
         end