Fixing problem reported by Nadeem Abdul Hamid

collects/tests/web-server/pr/bsl.rkt

@@ -0,0 +1,29 @@
+#lang racket
+(require net/url
+         rackunit
+         tests/eli-tester
+         htdp/bsl/reader
+         web-server/servlet/web)
+(require/expose web-server/servlet/web
+                (embed-ids))
+(require/expose htdp/bsl/reader
+                (wrap-reader))
+
+(define base-url
+  (string->url
+   "http://localhost:8000/servlets/standalone.rkt"))
+(define a-k-url
+  (string->url
+   "http://localhost:8000/servlets/standalone.rkt;((%22k%22%20.%20%22(1%201%2033620206)%22))"))
+(define k-info
+  '(1 1 33620206))
+
+(define (can-encode?)
+  (test
+   (continuation-url? a-k-url) => k-info
+   (embed-ids k-info base-url) => (url->string a-k-url)))
+
+(test
+ (can-encode?)
+ ((wrap-reader can-encode? empty)))
+ 

collects/web-server/servlet/web.rkt

@@ -23,11 +23,12 @@
 ;; determine if this url encodes a continuation and extract the instance id and
 ;; continuation id.
 (define (continuation-url? a-url)
+  (parameterize ([read-accept-dot #t])
     (cond 
       [(extract-param a-url "k")
        => read/string]
       [else
-     #f]))
+       #f])))
 
 (provide/contract
  [continuation-url? (url? . -> . (or/c false/c (list/c number? number? number?)))])