add code' to scribble/manual'

original commit: 4555254380c81815195bb55915bdb5cbd3ebc235

collects/scribble/private/manual-code.rkt

@@ -12,7 +12,8 @@
 
 (provide codeblock
          codeblock0
-         typeset-code)
+         typeset-code
+         code)
 
 (define-for-syntax (do-codeblock stx)
   (syntax-parse stx
@@ -53,6 +54,7 @@
                       #:indent [indent 2]
                       #:keep-lang-line? [keep-lang-line? #t]
                       #:line-numbers [line-numbers #f]
+                      #:block? [block? #t]
                       . strs)
   (let* ([str (apply string-append strs)]
          [bstr (string->bytes/utf-8 (regexp-replace* #rx"(?m:^$)" str "\xA0"))]
@@ -155,12 +157,13 @@
                                (and (= (cadr a) (cadr b))
                                     (> (cadddr a) (cadddr b))))))]
            [default-color meta-color])
-      (table
+      ((if block? table (lambda (style lines) (make-element #f lines)))
        block-color
        ((if keep-lang-line? values cdr) ; FIXME: #lang can span lines
         (list->lines
          indent
          #:line-numbers line-numbers
+         #:block? block?
          (let loop ([pos 0]
                     [tokens tokens])
            (cond
@@ -190,6 +193,40 @@
                    (split-lines default-color (substring* bstr pos (cadar tokens)))
                    (loop (cadar tokens) tokens))]))))))))
 
+(define (typeset-code-line context expand lang-line . strs)
+  (typeset-code
+   #:context context
+   #:expand expand
+   #:keep-lang-line? (not lang-line)
+   #:block? #f
+   #:indent 0
+   (let ([s (regexp-replace* #px"(?:\\s*(?:\r|\n|\r\n)\\s*)+" (apply string-append strs) " ")])
+     (if lang-line
+         (string-append "#lang " lang-line "\n" s)
+         s))))
+
+(define-syntax (code stx)
+  (syntax-parse stx
+    [(_ (~seq (~or (~optional (~seq #:expand expand-expr:expr)
+                              #:defaults ([expand-expr #'#f])
+                              #:name "#:expand keyword")
+                   (~optional (~seq #:context context-expr:expr)
+                              #:name "#:context keyword")
+                   (~optional (~seq #:lang lang-line-expr:expr)
+                              #:defaults ([lang-line-expr #'#f])
+                              #:name "#:lang-line keyword"))
+              ...)
+        str ...)
+     #`(typeset-code-line #,(if (attribute context-expr)
+                                #'context-expr
+                                (or
+                                 (let ([v #'(str ...)])
+                                   (and (pair? (syntax-e v))
+                                        #`#'#,(car (syntax-e v))))
+                                 #'#f))
+                          expand-expr
+                          lang-line-expr
+                          str ...)]))
 
 (define (split-lines style s)
   (cond
@@ -207,7 +244,9 @@
 
 (define omitable (make-style #f '(omitable)))
 
-(define (list->lines indent-amt l #:line-numbers [line-numbers #f])
+(define (list->lines indent-amt l 
+                     #:line-numbers line-numbers
+                     #:block? block?)
   (define indent-elem (if (zero? indent-amt)
                           ""
                           (hspace indent-amt)))
@@ -233,11 +272,12 @@
 
   (define (make-line accum-line line-number)
     (define rest (cons indent-elem accum-line))
-    (list (paragraph omitable (if line-numbers
+    (list ((if block? paragraph (lambda (s e) e))
+           omitable 
+           (if line-numbers
                (prepend-line-number line-number rest)
                rest))))
 
   (for/list ([l (break-list l 'newline)]
              [i (in-naturals (or line-numbers 1))])
     (make-line l i)))
-

collects/scribblings/scribble/manual.scrbl

@@ -97,6 +97,41 @@ produces the typeset result
 
 }
 
+@defform/subs[(code option ... str-expr ...+)
+              ([option (code:line #:lang lang-line-expr)
+                       (code:line #:expand expand-expr)
+                       (code:line #:context context-expr)])
+              #:contracts ([lang-line-expr (or/c #f string?)]
+                           [expand-expr (or/c #f (syntax-object? . -> . syntax-object?))]
+                           [context-expr syntax-object?])]{
+
+Like @racket[codeblock], but produces an element instead of a
+block. No @hash-lang[] line should appear in the string content;
+instead, it should be provided @racket[#:lang] (as a string
+without @racket["#lang"]) if needed, and the @hash-lang[] line is always stripped
+from the output when provided. Also, each newline in @racket[str-expr]s is collapsed
+along with all surrounding whitespace to a single space.
+
+For example,
+
+@codeblock[#:keep-lang-line? #f]|<|{
+  #lang scribble/manual
+  
+  This is @code[#:lang "at-exp racket"]|{@bold{Hi}}|'s result:
+  @bold{Hi}.
+}|>|
+
+produces the typeset result
+
+@nested[#:style 'inset]{
+  This is @code[#:lang "at-exp racket"]|{@bold{Hi}}|'s result:
+  @bold{Hi}.
+}
+
+}
+
+
+
 @defform/subs[(racketblock maybe-escape datum ...)
               ([maybe-escape code:blank
                             (code:line #:escape escape-id)])]{