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refine no-doc-available message for unbound ids

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svn: r15991
This commit is contained in:
Matthew Flatt 2009-09-13 15:33:24 +00:00
parent 374a70d9f1
commit 3511d7725a
1 changed files with 8 additions and 5 deletions
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13
collects/help/help-utils.ss
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@ -33,8 +33,8 @@
(define (find-help id)
(let* ([lb (identifier-label-binding id)]
[b (and (not lb) (identifier-binding id))]
[b (or lb b)]
[b (and (not (eq? 'lexical b)) b)]
[any-b (or lb b)]
[b (and (not (eq? 'lexical any-b)) any-b)]
[xref (load-collections-xref
(lambda ()
(printf "Loading help index...\n")))])
@ -46,9 +46,9 @@
"no documentation found for: ~e provided by: ~a"
(syntax-e id)
(module-path-index-resolve (caddr b)))))
(search-for-exports xref (syntax-e id)))))
(search-for-exports xref (syntax-e id) any-b))))
(define (search-for-exports xref sym)
(define (search-for-exports xref sym binding)
(let ([idx (xref-index xref)]
[libs null])
(for ([entry (in-list idx)])
@ -59,7 +59,10 @@
(if (null? libs)
(printf "Not found in any library's documentation: ~a\n" sym)
(begin
(printf "No documentation for current binding, but provided by:\n")
(printf "~a, but provided by:\n"
(if binding
"No documentation available for binding"
"No current binding"))
(let loop ([libs libs])
(unless (null? libs)
(unless (member (car libs) (cdr libs))