diff --git a/main.c b/main.c
index aeae453..e271fd6 100644
--- a/main.c
+++ b/main.c
@@ -18,6 +18,11 @@ struct fh_thread_s;
 struct fh_word_s;
 struct fh_instruction_s;
 
+struct fh_global_s {
+  bool verbose;
+  bool interactive;
+} fh_globals = {};
+
 /* if the return address is this, we should drop back to interactive mode */
 #define MAGICADDR_INTERACTIVE 0xFFFFFFFFULL
 
@@ -27,11 +32,12 @@ struct fh_instruction_s;
   } while (0)
 
 /* logging, TODO make levels configurable */
-#define LOG(format, ...) fprintf(stderr, format "\r\n", ##__VA_ARGS__)
+#define LOG(format, ...) do { if(fh_globals.verbose) { fprintf(stderr, format "\r\n", ##__VA_ARGS__); } } while (0)
 #define LOGI(format, ...) fprintf(stderr, "\x1b[32m" format "\x1b[m\r\n", ##__VA_ARGS__)
 #define LOGE(format, ...) fprintf(stderr, "\x1b[31;1m" format "\x1b[m\r\n", ##__VA_ARGS__)
 /* Forth standard output. XXX should be stdout, but then colors get mangled */
 #define FHPRINT(format, ...) fprintf(stderr, "\x1b[33;1m" format "\x1b[m", ##__VA_ARGS__)
+#define FHPRINT_SVC(format, ...) fprintf(stderr, "" format "", ##__VA_ARGS__)
 
 enum fh_error {
   FH_OK = 0,
@@ -627,7 +633,7 @@ enum fh_error fh_handle_quoted_string(
         break;
 
       default:
-        LOGE("Bad substate in interpret mode: %d", fh->substate);
+        LOGE("Bad substate in interpret mode: %s", substatenames[fh->substate]);
     }
   } else {
     /* compile */
@@ -772,7 +778,7 @@ enum fh_error fh_process_line(struct fh_thread_s *fh, char *linebuf)
       case FH_SUBSTATE_DOTQUOTE:
         end = strchr(rp, '"');
         if (end) {
-          length = end - rp - 1;
+          length = end - rp;
           LOG("Quoted string: \"%.*s\"", (int) length, rp);
           TRY(fh_handle_quoted_string(fh, rp, length));
           fh_setsubstate(fh, FH_SUBSTATE_NONE);
@@ -818,16 +824,30 @@ int main(int argc, char *argv[])
     return 1;
   }
 
-  bool interactive = true;
+  fh_globals.verbose = false;
+  fh_globals.interactive = false;
+
   FILE *infile = stdin;
 
-  // TODO use getopt?
+  // TODO use getopt
   for (int a = 1; a < argc; a++) {
-    if (argv[a][0] == '-') {
+    if (argv[a][0] == '-' && argv[a][1] != '-') {
       // opt
+      char *cc = argv[a] + 1;
+      char c;
+      while(0 != (c = *cc++)) {
+        switch (c) {
+          case 'v':
+            fh_globals.verbose = 1;
+            break;
+          default:
+            LOGE("Unknown flag: %c", c);
+            return 1;
+        }
+      }
     } else {
       infile = fopen(argv[a], "r");
-      interactive = false;
+      fh_globals.interactive = false;
       if (!infile) {
         LOGE("Error opening infile: %s", argv[a]);
         return 1;
@@ -853,13 +873,13 @@ int main(int argc, char *argv[])
 
     rv = fh_process_line(&fh, linebuf);
     if (rv == FH_OK) {
-      FHPRINT("ok\r\n");
+      FHPRINT_SVC(" ok\r\n");
     } else {
       LOGE("ERROR %s on line %d", fherr_name(rv), linecnt);
       return 1;
     }
   }
 
-  FHPRINT("Bye.\r\n");
+  FHPRINT_SVC("Bye.\r\n");
   return 0;
 }
diff --git a/str.f b/str.f
new file mode 100644
index 0000000..c1e3f2c
--- /dev/null
+++ b/str.f
@@ -0,0 +1,2 @@
+." show this string"
+S" save this string" TYPE