next-cmd should only be called by get-document at the end of 20 status

client.rkt

@@ -166,7 +166,8 @@
          'get-document
          (string-append "unsupported scheme: ~a~n"
                         "  url: ~a~n")
-         (url-scheme destination) destination))
+         (url-scheme destination)
+         (url->string destination)))
 
       (define-values (status meta body-port)
         (net:request destination))
@@ -190,6 +191,7 @@
         [(and (>= status 10) (<= status 19))
          (displayln "input requested")
          (display "? ")
+         (flush-output)
 
          (get-document
           (struct-copy
@@ -221,7 +223,8 @@
          ;; If the document failed to be fetched (parser error,
          ;; unsupported mime, so on and so forth) this would not
          ;; ever be reached.
-         (set! history (cons destination history))]
+         (set! history (cons destination history))
+         (next-cmd)]
 
         ;;
         ;; 30-39 REDIRECT
@@ -273,6 +276,4 @@
           'get-document
           (string-append "resource requires a client certificate, "
                          "which this client does not yet support~a~n"
-                         "  url: ~a~n"))])
+                         "  url: ~a~n"))]))))
-
-      (next-cmd))))

gem300.rkt

@@ -9,6 +9,8 @@
 (define (repl)
   (display "G-300 > ")
 
+  (flush-output)
+
   (with-handlers
     ([(or/c exn:fail:user?
             ;; todo: catch these errors separately and reformat them
@@ -18,7 +20,8 @@
       (λ (exn)
         (displayln (exn-message exn)))])
 
-    (match (regexp-match #px"(\\w+)\\s*(.*)" (read-line))
+    (match (regexp-match #px"(\\w+)\\s*(.*)"
+                         (read-line (current-input-port) 'any))
       [(or (list _ "go" url)
            (list _ "g" url))
        (send client go-cmd url)]
@@ -46,7 +49,20 @@
            (list _ "b" _))
        (send client back-cmd)]
 
+      [(or (list _ "quit" _)
+           (list _ "q" _ ))
+       (exit)]
+
       [else
        (displayln "no such command")]))
 
   (repl))
+
+(displayln
+ (string-append "welcome to gem300, a gemini client.\n"
+                "to learn more, type:\n"
+                "'go w6vvn.flounder.online/gem300/tutorial.gmi'"))
+
+(flush-output)
+
+(repl)