-#include <language/command.h>
-#include <libpspp/message.h>
-#include <libpspp/getl.h>
-#include <language/syntax-file.h>
-#include <language/lexer/lexer.h>
-#include <libpspp/str.h>
-#include <data/file-name.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "data/file-name.h"
+#include "language/command.h"
+#include "language/lexer/lexer.h"
+#include "language/syntax-file.h"
+#include "libpspp/getl.h"
+#include "libpspp/message.h"
+#include "libpspp/str.h"