Grammar: require a space after the "include" directive

Closes #38.

README.md

@@ -102,17 +102,32 @@ https://github.com/basho/cuttlefish/wiki/Cuttlefish-for-Application-Users
 
 ## What's it look like to application packagers?
 
-* [node_package](https://github.com/basho/cuttlefish/wiki/Cuttlefish-for-node_package-users)
-* [non node_package](https://github.com/basho/cuttlefish/wiki/Cuttlefish-for-non-node_package-users)
+* [node_package](https://github.com/Kyorai/cuttlefish/wiki/Cuttlefish-for-node_package-users)
+* [non node_package](https://github.com/Kyorai/cuttlefish/wiki/Cuttlefish-for-non-node_package-users)
+
 
 ## Current Status
 
 Cuttlefish is ready for production deployments.
 
+
 ## Re-generating parser
 
-```
-rebar3 as dev neotoma
+After using Neotoma Rebar3 plugin to re-generate conf_parse.erl, you **MUST**
+edit that file to change the exported `file/1` function to this code:
+
+``` erl
+-spec file(file:name()) -> any().
+file(Filename) ->
+     AbsFilename = filename:absname(Filename),
+     case erl_prim_loader:get_file(AbsFilename) of
+         {ok, Bin, _} -> parse(Bin);
+         error -> {error, undefined}
+     end.
 ```
 
-Please see the *NOTE* in `src/conf_parse.peg` as well.
+To regenerate the parser from the PEG grammar:
+
+```
+rebar3 as dev neotoma compile
+```

src/conf_parse.erl

@@ -126,6 +126,16 @@ included_dir_test() ->
         ], Conf),
     ok.
 
+invalid_included_file_test() ->
+  Conf = conf_parse:file("test/invalid_include_file.conf"),
+  ?assertMatch({[], <<"includeriak.conf\n\n">>, {{line,_}, {column, _}}}, Conf),
+  ok.
+
+invalid_included_dir_test() ->
+  Conf = conf_parse:file("test/invalid_include_dir.conf"),
+  ?assertMatch({[], <<"includeconf.d/*.conf\n">>, {{line, _},{column, _}}}, Conf),
+  ok.
+
 escaped_dots_are_removed_test() ->
     Conf = conf_parse:parse("#comment\nsetting\\.0 = thing0\n"),
     ?assertEqual([
@@ -225,7 +235,7 @@ parse(Error) ->
 
 -spec 'include'(input(), index()) -> parse_result().
 'include'(Input, Index) ->
-  p(Input, Index, 'include', fun(I,D) -> (p_seq([p_zero_or_more(fun 'ws'/2), p_string(<<"include">>), p_zero_or_more(fun 'ws'/2), fun 'included_file_or_dir'/2, p_optional(fun 'comment'/2)]))(I,D) end, fun(Node, _Idx) ->
+  p(Input, Index, 'include', fun(I,D) -> (p_seq([p_zero_or_more(fun 'ws'/2), p_string(<<"include">>), p_one_or_more(fun 'ws'/2), fun 'included_file_or_dir'/2, p_optional(fun 'comment'/2)]))(I,D) end, fun(Node, _Idx) ->
     [_, _Include, _, Included, _] = Node,
     {include, Included}
  end).

src/conf_parse.peg

@@ -77,7 +77,7 @@ value <- (!((ws* crlf) / comment) .)+ %{
 comment <- ws* "#" (!crlf .)* `comment`;
 
 %% An include is a line that begins with 'include' and something.
-include <- ws* "include" ws* included_file_or_dir comment? %{
+include <- ws* "include" ws+ included_file_or_dir comment? %{
     [_, _Include, _, Included, _] = Node,
     {include, Included}
 %};

test/invalid_include_dir.conf

@@ -0,0 +1,2 @@
+# Missing a space. See Kyorai/cuttlefish#38.
+includeconf.d/*.conf

test/invalid_include_file.conf

@@ -0,0 +1,3 @@
+# Missing a space. See Kyorai/cuttlefish#38.
+includeriak.conf
+