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avoid remembering bad links in case a manual that was not installed gets installed

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svn: r3834
This commit is contained in:
Eli Barzilay 2006-07-27 05:23:35 +00:00
parent ce1ab94877
commit 666cb085cc
1 changed files with 15 additions and 15 deletions
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30
collects/help/servlets/home.ss
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@ -12,11 +12,12 @@
(define items
`(("Help Desk" "How to get help" "/servlets/howtouse.ss")
("Software" "How to run programs" "/servlets/howtoscheme.ss"
("Tour" ,(get-manual-index "tour"))
,(lambda () `("Tour" ,(get-manual-index "tour")))
("Languages" "/servlets/scheme/what.ss")
("Manuals" "/servlets/manuals.ss")
("Release" "/servlets/releaseinfo.ss")
,(manual-entry "drscheme" "frequently asked questions" "FAQ"))
,(lambda ()
(manual-entry "drscheme" "frequently asked questions" "FAQ")))
("Program Design" "Learning to program in Scheme" "/servlets/howtoprogram.ss"
("Teachpacks" "/servlets/teachpacks.ss")
("Why DrScheme?" "/servlets/research/why.ss"))
@ -26,21 +27,20 @@
("Mailing Lists" "/servlets/resources/maillist.ss"))))
(define (item i)
(define (item->xexpr item)
(cond [(and (pair? item) (symbol? (car item))) item]
[(procedure? item) (item->xexpr (item))]
[else `(A ([HREF ,(cadr item)]) ,(car item))]))
(let ([title (car i)] [subtitle (cadr i)] [url (caddr i)] [subs (cdddr i)])
`(LI (B (A ([HREF ,url]) ,title)) ": " ,subtitle
,@(if (null? subs)
'()
`((BR) nbsp nbsp nbsp nbsp nbsp nbsp
(FONT ([SIZE "-2"])
,@(apply append
(map (lambda (s)
(let ([s (if (and (pair? s) (symbol? (car s)))
s
`(A ([HREF ,(cadr s)]) ,(car s)))])
`(,s ", ")))
subs))
"...")))
(BR) (BR))))
,@(if (null? subs)
'()
`((BR) nbsp nbsp nbsp nbsp nbsp nbsp
(FONT ([SIZE "-2"])
,@(apply append
(map (lambda (s) `(,(item->xexpr s) ", ")) subs))
"...")))
(BR) (BR))))
(define (start initial-request)
(report-errors-to-browser send/finish)