main
Matthew Butterick 10 years ago
parent 6665e89866
commit c3ce347cba

@ -163,7 +163,7 @@
#:min-length [min-length default-min-length])
((xexpr? procedure?) ((or/c char? string?)
#:exceptions (listof exception-word?)
#:min-length (or/c integer? #f)) . ->* . string?)
#:min-length (or/c integer? #f)) . ->* . xexpr/c)
;; set up module data
;; todo?: change set! to parameterize
@ -183,17 +183,20 @@
[else x])))
;; Default hyphenate function.
(define+provide/contract (hyphenate x [joiner default-joiner]
#:exceptions [extra-exceptions '()]
#:min-length [min-length default-min-length])
((xexpr/c) ((or/c char? string?)
#:exceptions (listof exception-word?)
#:min-length (or/c integer? #f)) . ->* . string?)
#:min-length (or/c integer? #f)) . ->* . xexpr/c)
(hyphenatef x (λ(x) #t) joiner #:exceptions extra-exceptions #:min-length min-length))
(define+provide/contract (unhyphenate x [joiner default-joiner])
((xexpr/c) ((or/c char? string?)) . ->* . string?)
((xexpr/c) ((or/c char? string?)) . ->* . xexpr/c)
(define (remove-hyphens text)
(string-replace text (joiner->string joiner) ""))

@ -33,7 +33,7 @@ After that, you can update the package like so:
[joiner (or/c char? string?) (integer->char #x00AD)]
[#:exceptions exceptions (listof string?) empty]
[#:min-length length (or/c integer? false?) 5])
string?]
xexpr/c]
Hyphenate @racket[_xexpr] by calculating hyphenation points and inserting @racket[_joiner] at those points. By default, @racket[_joiner] is the soft hyphen (Unicode 00AD = decimal 173). Words shorter than @racket[#:min-length] @racket[_length] will not be hyphenated. To hyphenate words of any length, use @racket[#:min-length] @racket[#f].
@margin-note{The REPL displays a soft hyphen as \u00AD. But in ordinary use, you'll only see a soft hyphen when it appears at the end of a line or page as part of a hyphenated word. Otherwise it's not displayed. In most of the examples here, I use a standard hyphen for clarity.}
@ -101,7 +101,7 @@ Don't send raw HTML through @racket[hyphenate]. It can't distinguish HTML tags a
[joiner (or/c char? string?) (integer->char \#x00AD)]
[#:exceptions exceptions (listof string?) empty]
[#:min-length length (or/c integer? false?) 5])
string?]
xexpr/c]
Like @racket[hyphenate], but only words matching @racket[_pred] are hyphenated. Convenient if you want to prevent hyphenation of certain sets of words, like proper names:
@examples[#:eval my-eval
@ -128,7 +128,7 @@ It's possible to do fancier kinds of hyphenation restrictions that take account
(unhyphenate
[xexpr xexpr/c]
[joiner (or/c char? string?) @(integer->char #x00AD)])
string?]
xexpr/c]
Remove @racket[_joiner] from @racket[_xexpr].
A side effect of using @racket[hyphenate] is that soft hyphens (or whatever the @racket[_joiner] is) will be embedded in the output text. If you need to support copying of text, for instance in a GUI application, you'll probably want to strip out the hyphenation before the copied text is moved to the clipboard.

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