clean up comments

pleroma-comments.lua

@@ -1,24 +1,29 @@
 
 local json = require("cjson")
 
-pleroma_avatar_save_path = nil  -- location of downloaded images
-pleroma_avatar_path = nil       -- prepended to image file, written on page
--- to configure, put above vars in a file named 'config.lua'
+-- GLOBAL VARIABLES
+-- & meant to be assigned in config.lua
+--------------------
+-- location of downloaded images
+pleroma_avatar_save_path = nil
+-- prepended to image file, written on page
+pleroma_avatar_path = nil 
+
+-- instances may require auth to access api
+-- pleroma_auth_token = nil
+
 pcall(
     function () 
         dofile("config.lua")
     end
 )
+
 --[[
 
-if these variables are still `nil` after `dofile()` then
-the script will look for it in the yaml header.
+if `pleroma_avatar_*` are still `nil` after `dofile()` then the script will look for it in the yaml header.
 
-note: lua filters can not access variables defined on the command line,
-e.g `pandoc -V foo="bar"`
-and it may not be ideal to define paths in yaml headers,
-i.e changing the path for avatars on a website would involve editing each 
-manuscript.
+if they are still nil afterwards, then  the script
+will hotlink.
 
 ]]--
 
@@ -98,6 +103,8 @@ function get(link, filename)
         }
     end
     -- don't use auth bearer for downloading images'
+    -- its either not needed OR
+    -- there should be an extra check on the host
     if pleroma_auth_token and not filename then
         local h = "--header=\"Authorization: Bearer %s\" " 
         table.insert(