[Minor] remove unnecessary calls of lpeg.P in DMARC grammar

Just to make to code more readable.

diff --git a/lualib/plugins/dmarc.lua b/lualib/plugins/dmarc.lua
index b05a3a0ef69c8dafc3ca5ab48a9c61cb3f81e9d3..720c76e1686524f0722fec771bf842b6f15bace0 100644 (file)
--- a/lualib/plugins/dmarc.lua
+++ b/lualib/plugins/dmarc.lua
@@ -241,10 +241,10 @@ local function gen_dmarc_grammar()
   local space = lpeg.space ^ 0
   local name = lpeg.C(lpeg.alpha ^ 1)
   local sep = space * lpeg.S("\\;") * space
-  local value = lpeg.C(lpeg.P(lpeg.P((lpeg.space ^ 1) * lpeg.graph + lpeg.P(lpeg.graph)) - sep) ^ 1)
+  local value = lpeg.C(((lpeg.space ^ 1 * lpeg.graph + lpeg.graph) - sep) ^ 1)
   local pair = lpeg.Cg(name * "=" * space * value) * sep ^ -1
   local list = lpeg.Cf(lpeg.Ct("") * pair ^ 0, rawset)
-  local version = lpeg.P("v") * space * lpeg.P("=") * space * lpeg.P("DMARC1")
+  local version = "v" * space * "=" * space * "DMARC1"
   local record = version * sep * list
 
   return record