minor typo fix

original commit: 14d181ddef75ee76b578a9f52d2ef11a2baa8d15

collects/meta/web/html/resource.rkt

@@ -43,25 +43,31 @@
 ;; 'abs is used below for roots that should always use absolute links (needed
 ;; for some skeleton pages that are used in nested subdirectories).
 (provide url-roots)
-(define url-roots
+(define url-roots (make-parameter #f))
+
+(define cached-roots '(#f . #f))
+(define (current-url-roots)
   ;; takes in a (listof (list prefix-string url-string . flags)), and produces
   ;; an alist with lists of strings for the keys; the prefix-strings are split
   ;; on "/"s, and the url-strings can be anything at all actually (they are put
   ;; as-is before the path with a "/" between them).
-  (make-parameter #f
-    (lambda (x)
-      (and (list? x) (pair? x)
-           (map (lambda (x)
-                  (list* (regexp-match* #rx"[^/]+" (car x))
-                         (regexp-replace #rx"/$" (cadr x) "")
-                         (cddr x)))
-                x)))))
+  (let ([roots (url-roots)])
+    (unless (eq? roots (car cached-roots))
+      (set! cached-roots
+            (cons roots
+                  (and (list? roots) (pair? roots)
+                       (map (lambda (root)
+                              (list* (regexp-match* #rx"[^/]+" (car root))
+                                     (regexp-replace #rx"/$" (cadr root) "")
+                                     (cddr root)))
+                            roots)))))
+    (cdr cached-roots)))
 
 ;; a utility for relative paths, taking the above `default-file' and
 ;; `url-roots' into consideration.
 (define (relativize file tgtdir curdir)
   (define file* (if (equal? file default-file) "" file))
-  (define roots (url-roots))
+  (define roots (current-url-roots))
   (define (find-root path mode)
     (ormap (lambda (root+url+flags)
              (let loop ([r (car root+url+flags)] [p path])
@@ -194,7 +200,13 @@
     (add-renderer path render)
     (make-keyword-procedure
      (lambda (kws kvs . args) (keyword-apply referrer kws kvs (url) args))
-     (lambda args (apply referrer (url) args)))))
+     (case-lambda [(x) (if (eq? x get-resource-path) (url) (referrer (url) x))]
+                  [args (apply referrer (url) args)]))))
+
+;; make it possible to always get the path to a resource
+(provide get-resource-path)
+(define (get-resource-path resource)
+  (resource get-resource-path))
 
 ;; a convenient utility to create renderers from some output function (like
 ;; `output-xml' or `display') and some content

collects/meta/web/html/xml.rkt

@@ -37,6 +37,15 @@
                                      "missing attribute value for `~s:'" a)]
             [else (loop (cddr xs) (cons (cons a (cadr xs)) as))]))))
 
+;; similar, but keeps the attributes as a list, useful to build new functions
+;; that accept attributes without knowing about the xml structs.
+(provide split-attributes+body)
+(define (split-attributes+body xs)
+  (let loop ([xs xs] [as '()])
+    (if (and (pair? xs) (pair? (cdr xs)) (attribute->symbol (car xs)))
+      (loop (cddr xs) (list* (cadr xs) (car xs) as))
+      (values (reverse as) xs))))
+
 ;; ----------------------------------------------------------------------------
 ;; An output that handles xml quoting, customizable
 

collects/scribble/doclang.rkt

@@ -1,11 +1,11 @@
-#lang scheme/base
+#lang racket/base
 
 (require "struct.ss"
          "decode.ss"
-         (for-syntax scheme/base
+         (for-syntax racket/base
                      syntax/kerncase))
 
-(provide (except-out (all-from-out scheme/base) #%module-begin)
+(provide (except-out (all-from-out racket/base) #%module-begin)
          (rename-out [*module-begin #%module-begin]))
 
 ;; Module wrapper ----------------------------------------

collects/scribblings/scribble/reader.scrbl

@@ -141,7 +141,7 @@ expressions.
 }===|
 
 The command part of an @"@"-form is optional as well. In that case,
-the @"@" forms is read as a list, which usually counts as a function
+the @"@" form is read as a list, which usually counts as a function
 application, but it also useful when quoted with the usual Racket
 @racket[quote]: