Comment 1 by robert.gionea:

Obviously, I am talking about encoding/json, sorry for the confusion.

Comment 2:

Either spelling is acceptable. Go consistently uses the single l form.

Status changed to WontFix.

Comment 3 by robert.gionea:

Sorry, I don't mean to be disrespectful, but could you at least point me to some
book/material/anything where it says that either spelling is acceptable? This are few
very basic grammar rules which contradict you:
1. "-er" as used here is an agentive ending;
2. when creating words using the "-er" agent suffix, for two-syllable verbs that end in
a single vowel followed by a single consonant other than w, x, or y, double the final
consonant then add the agent suffix.
I believe is fairly clear that you are wrong, and if you have no evidence to back this
(I admit that this could be something that I don't have knowledge about) you are
probably wrong.
If you find this as a too minor issue, I can take the time to submit a patch with the
correction...

Comment 4:

for example, http://www.merriam-webster.com/dictionary/marshaler