factor/extra/unicode/control-pictures/control-pictures-docs.factor

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! Copyright (C) 2017 Pi.
! See http://factorcode.org/license.txt for BSD license.
USING: assocs hashtables help.markup help.stylesheet help.syntax
help.topics io.styles kernel namespaces present sequences
strings urls ;
IN: unicode.control-pictures
: $url-to ( children -- )
first2 >url [
dup present href associate url-style get assoc-union
[ write-object ] with-style
] ($span) ;
HELP: control-pictures
{ $values
{ "string" string }
}
{ $description "Transforms C0 control characters into their corresponding Control Picture block codepoints." } ;
ARTICLE: "unicode.control-pictures" "Control Pictures"
"The " { $vocab-link "unicode.control-pictures" } " vocabulary provides a utility word " { $link control-pictures } " for transforming characters in the nonprintable " { $url-to "ASCII C0 block" "http://www.unicode.org/charts/PDF/U0000.pdf" } " to their representations in the " { $url-to "Control Pictures" "http://www.unicode.org/charts/PDF/U2400.pdf" } " block. It has no effect on any other characters."
;
ABOUT: "unicode.control-pictures"