diff --git a/include/jsx_decoder.hrl b/include/jsx_decoder.hrl
index 82f1872..4237ec6 100644
--- a/include/jsx_decoder.hrl
+++ b/include/jsx_decoder.hrl
@@ -141,15 +141,21 @@ parse_opts([], Opts) ->
 parse_opts([{comments, Value}|Rest], Opts) ->
     true = lists:member(Value, [true, false]),
     parse_opts(Rest, Opts#opts{comments=Value});
+parse_opts([comments|Rest], Opts) ->
+    parse_opts(Rest, Opts#opts{comments=true});
 parse_opts([{escaped_unicode, Value}|Rest], Opts) ->
     true = lists:member(Value, [ascii, codepoint, none]),
     parse_opts(Rest, Opts#opts{escaped_unicode=Value});
 parse_opts([{unquoted_keys, Value}|Rest], Opts) ->
     true = lists:member(Value, [true, false]),
     parse_opts(Rest, Opts#opts{unquoted_keys=Value});
+parse_opts([unquoted_keys|Rest], Opts) ->
+    parse_opts(Rest, Opts#opts{unquoted_keys=true});
 parse_opts([{multi_term, Value}|Rest], Opts) ->
     true = lists:member(Value, [true, false]),
     parse_opts(Rest, Opts#opts{multi_term=Value});
+parse_opts([multi_term|Rest], Opts) ->
+    parse_opts(Rest, Opts#opts{multi_term=true});
 parse_opts([{encoding, _}|Rest], Opts) ->
     parse_opts(Rest, Opts);
 parse_opts(_, _) ->
diff --git a/src/jsx.erl b/src/jsx.erl
index 1f60f36..8df7696 100644
--- a/src/jsx.erl
+++ b/src/jsx.erl
@@ -258,11 +258,14 @@ json_to_term(JSON) ->
 
 -spec json_to_term(JSON::binary(), Opts::decoder_opts()) -> eep0018(). 
 
+%json_to_term(JSON, Opts) ->
+%    try jsx_eep0018:json_to_term(JSON, Opts)
+%    %% rethrow exception so internals aren't confusingly exposed to users
+%    catch error:badarg -> erlang:error(badarg)
+%    end.
+    
 json_to_term(JSON, Opts) ->
-    try jsx_eep0018:json_to_term(JSON, Opts)
-    %% rethrow exception so internals aren't confusingly exposed to users
-    catch error:badarg -> erlang:error(badarg)
-    end.
+    jsx_eep0018:json_to_term(JSON, Opts).
 
 
 %% @spec term_to_json(JSON::eep0018()) -> binary()
diff --git a/src/jsx_eep0018.erl b/src/jsx_eep0018.erl
index 3072aca..1f27cf0 100644
--- a/src/jsx_eep0018.erl
+++ b/src/jsx_eep0018.erl
@@ -69,10 +69,19 @@ term_to_json(List, Opts) ->
     
 
 extract_parser_opts(Opts) ->
-    [ {K, V} || {K, V} <- 
-        Opts, lists:member(K, [comments, encoding, unquoted_keys])
-    ].
+    extract_parser_opts(Opts, []).
 
+extract_parser_opts([], Acc) -> Acc;     
+extract_parser_opts([{K,V}|Rest], Acc) ->
+    case lists:member(K, [comments, encoding, unquoted_keys]) of
+        true -> [{K,V}] ++ Acc
+        ; false -> extract_parser_opts(Rest, Acc)
+    end;
+extract_parser_opts([K|Rest], Acc) ->
+    case lists:member(K, [comments, encoding, unquoted_keys]) of
+        true -> [K] ++ Acc
+        ; false -> extract_parser_opts(Rest, Acc)
+    end.
 
 %% ensure the first jsx event we get is start_object or start_array when running
 %%  in strict mode
diff --git a/src/jsx_format.erl b/src/jsx_format.erl
index 481d355..4bd3cd3 100644
--- a/src/jsx_format.erl
+++ b/src/jsx_format.erl
@@ -72,9 +72,19 @@ parse_opts([], Opts) ->
 
 
 extract_parser_opts(Opts) ->
-    [ {K, V} || {K, V} <- 
-        Opts, lists:member(K, [comments, encoding, unquoted_keys])
-    ].
+    extract_parser_opts(Opts, []).
+
+extract_parser_opts([], Acc) -> Acc;     
+extract_parser_opts([{K,V}|Rest], Acc) ->
+    case lists:member(K, [comments, encoding, unquoted_keys]) of
+        true -> [{K,V}] ++ Acc
+        ; false -> extract_parser_opts(Rest, Acc)
+    end;
+extract_parser_opts([K|Rest], Acc) ->
+    case lists:member(K, [comments, encoding, unquoted_keys]) of
+        true -> [K] ++ Acc
+        ; false -> extract_parser_opts(Rest, Acc)
+    end.
     
 
 format_something({event, start_object, Next}, Opts, Level) ->
diff --git a/src/jsx_verify.erl b/src/jsx_verify.erl
index 1777922..890d7ac 100644
--- a/src/jsx_verify.erl
+++ b/src/jsx_verify.erl
@@ -51,9 +51,19 @@ is_json(JSON, Opts) ->
 
 
 extract_parser_opts(Opts) ->
-    [ {K, V} || {K, V} <- 
-        Opts, lists:member(K, [comments, encoding, unquoted_keys])
-    ].
+    extract_parser_opts(Opts, []).
+
+extract_parser_opts([], Acc) -> Acc;    
+extract_parser_opts([{K,V}|Rest], Acc) ->
+    case lists:member(K, [comments, encoding, unquoted_keys]) of
+        true -> [{K,V}] ++ Acc
+        ; false -> extract_parser_opts(Rest, Acc)
+    end;
+extract_parser_opts([K|Rest], Acc) ->
+    case lists:member(K, [comments, encoding, unquoted_keys]) of
+        true -> [K] ++ Acc
+        ; false -> extract_parser_opts(Rest, Acc)
+    end.
 
 
 %% enforce only arrays and objects at top level