fix #504 - Completion for partial identifier matching to a basic type doesn't work

src/dcd/server/autocomplete/complete.d

@@ -59,7 +59,8 @@ public AutocompleteResponse complete(const AutocompleteRequest request,
 		request.cursorPosition, stringCache, tokenArray);
 
 	// allows to get completion on keyword, typically "is"
-	if (beforeTokens.length && isKeyword(beforeTokens[$-1].type))
+	if (beforeTokens.length &&
+		(isKeyword(beforeTokens[$-1].type) || isBasicType(beforeTokens[$-1].type)))
 	{
 		Token* fakeIdent = cast(Token*) (&beforeTokens[$-1]);
 		fakeIdent.text = str(fakeIdent.type);

tests/tc_complete_kw/expected3.txt

@@ -0,0 +1,2 @@
+identifiers
+internal	v

tests/tc_complete_kw/file3.d

@@ -0,0 +1 @@
+struct Member{int internal;}void main(){Member member;member.int }

tests/tc_complete_kw/run.sh

@@ -6,3 +6,6 @@ diff actual1.txt expected1.txt
 
 ../../bin/dcd-client $1 file2.d -c42 > actual2.txt
 diff actual2.txt expected1.txt
+
+../../bin/dcd-client $1 file3.d -c64 > actual3.txt
+diff actual3.txt expected3.txt