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fix `regexp-match' docs

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This commit is contained in:
Matthew Flatt 2011-09-03 13:11:33 -06:00
parent 594447ae7e
commit 4025206bd7
1 changed files with 3 additions and 4 deletions
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7
collects/scribblings/reference/regexps.scrbl
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@ -241,17 +241,16 @@ string, @racket[start-pos] is a character position; when
position; and when @racket[input] is an input port, @racket[start-pos]
is the number of bytes to skip before starting to match. The
@racket[end-pos] argument can be @racket[#f], which corresponds to the
end of the string or the end-of-file in the stream; otherwise, it is a
end of the string or an end-of-file in the stream; otherwise, it is a
character or byte position, like @racket[start-pos]. If @racket[input]
is an input port, and if the end-of-file is reached before
is an input port, and if an end-of-file is reached before
@racket[start-pos] bytes are skipped, then the match fails.
In @racket[pattern], a start-of-string @litchar{^} refers to the first
position of @racket[input] after @racket[start-pos], assuming that
@racket[input-prefix] is @racket[#""]. The end-of-input @litchar{$}
refers to the @racket[end-pos]th position or (in the case of an input
port) the end of file, whichever comes first, assuming that
@racket[output-prefix] is @racket[#f].
port) an end-of-file, whichever comes first.
The @racket[input-prefix] specifies bytes that effectively precede
@racket[input] for the purposes of @litchar{^} and other look-behind