* Added `note-init-lib' for libraries in scheme/init

* Use it in help.scrbl and in enter.scrbl (which is not reprovided by
  scheme)
* Updated init.scrbl
* Improved code in reference.scrbl

svn: r11051

collects/scribblings/reference/enter.scrbl

@@ -4,7 +4,7 @@
 
 @title[#:tag "enter"]{Interactive Module Loading}
 
-@note-lib[scheme/enter]
+@note-init-lib[scheme/enter]
 
 @defform*[[(enter! module-path)
            (enter! #f)]]{

collects/scribblings/reference/help.scrbl

@@ -6,14 +6,7 @@
 
 @title{Interactive Help}
 
-@declare-exporting[scheme/help scheme/init]
-                   
-@defmodule*/no-declare[(scheme/help)]{The @scheme[help] form documented
-in this section is provided by the @schememodname[scheme/help] and
-@schememodname[scheme/init] libraries, which means that it is
-available when @exec{mzscheme} is started with no command-line
-arguments. It is not provided by @scheme[scheme] or
-@scheme[scheme/base].}
+@note-init-lib[scheme/help]
 
 @deftogether[(
 @defidform[help]

collects/scribblings/reference/init.scrbl

@@ -7,8 +7,9 @@
 
 @defmodule*/no-declare[(scheme/init)]{The @schememodname[scheme/init]
 library is the default start-up library for MzScheme. It re-exports
-the @schememodname[scheme] and @schememodname[scheme/help] libraries,
-and it sets @scheme[current-print] to use @scheme[pretty-print].}
+the @schememodname[scheme], @schememodname[scheme/enter] and
+@schememodname[scheme/help] libraries, and it sets
+@scheme[current-print] to use @scheme[pretty-print].}
 
 @defmodule*/no-declare[(scheme/gui/init)]{The
 @schememodname[scheme/gui/init] library is the default start-up

collects/scribblings/reference/mz.ss

@@ -37,6 +37,24 @@
       [(_ lib . more)
        (note-lib lib #:use-sources () . more)]))
 
+  (provide note-init-lib)
+  (define-syntax note-init-lib
+    (syntax-rules ()
+      [(_ lib #:use-sources (src ...) . more)
+       (begin
+         (declare-exporting lib scheme/init #:use-sources (src ...))
+         (defmodule*/no-declare (lib)
+           (t "The bindings documented in this section are provided by the "
+              (schememodname lib)
+              " and "
+              (schememodname scheme/init)
+              " libraries, which means that they ara available when "
+              (exec "mzscheme") " is started with no command-line arguments."
+              " They are not provided by " (schememodname scheme/base)
+              " or " (schememodname scheme) "."
+              . more)))]
+      [(_ lib . more)
+       (note-init-lib lib #:use-sources () . more)]))
 
   (provide note-lib-only)
   (define-syntax note-lib-only

collects/scribblings/reference/reference.scrbl

@@ -1,23 +1,17 @@
 #lang scribble/doc
-@(require "mz.ss"
-          scribble/struct)
+@(require "mz.ss" scribble/struct scheme/list)
 
 @(define (scheme-extra-libs)
    (make-delayed-element
     (lambda (renderer p ri)
-     (let ([keys (resolve-get-keys p ri (lambda (v)
-                                          (eq? (car v) 'scheme-extra-lib)))])
-      (let ([keys (sort keys string<?
-                        #:key (lambda (k)
-                                (symbol->string (cadr k)))
-                        #:cache-keys? #t)])
-        (let loop ([keys keys])
-          (cond
-            [(null? keys) '("")]
-            [(null? (cdr keys)) (list ", and "
-                                      (resolve-get p ri (car keys)))]
-            [else (list* ", " (resolve-get p ri (car keys))
-                         (loop (cdr keys)))])))))
+      (let ([mods (append-map
+                   (lambda (k) (list ", " (resolve-get p ri k)))
+                   (sort (resolve-get-keys
+                          p ri (lambda (v) (eq? (car v) 'scheme-extra-lib)))
+                         string<?
+                         #:key (lambda (k) (symbol->string (cadr k)))
+                         #:cache-keys? #t))])
+        `(,@(drop-right mods 2) ", and " ,(last mods))))
     (lambda () "...")
     (lambda () "...")))