better base64 docs

basis/ascii/ascii-docs.factor

@@ -38,7 +38,7 @@ HELP: quotable?
 { $description "Tests for characters which may appear in a Factor string literal without escaping." } ;
 
 ARTICLE: "ascii" "ASCII character classes"
-"Traditional ASCII character classes:"
+"The " { $vocab-link "ascii" } " vocabulary implements traditional ASCII character classes:"
 { $subsection blank? }
 { $subsection letter? }
 { $subsection LETTER? }

basis/base64/base64-docs.factor

@@ -1,20 +1,28 @@
-USING: help.markup help.syntax kernel math ;
+USING: help.markup help.syntax kernel math sequences ;
 IN: base64
 
 HELP: >base64
-{ $values { "seq" "a sequence" } { "base64" "a string of base64 characters" } }
+{ $values { "seq" sequence } { "base64" "a string of base64 characters" } }
 { $description "Converts a sequence to its base64 representation by taking six bits at a time as an index into a lookup table containing alphanumerics, '+', and '/'.  The result is padded with '=' if the input was not a multiple of six bits." }
 { $examples
-    { $unchecked-example "\"The monorail is a free service.\" >base64 ." "VGhlIG1vbm9yYWlsIGlzIGEgZnJlZSBzZXJ2aWNlLg==" }
+    { $example "USING: prettyprint base64 strings ;" "\"The monorail is a free service.\" >base64 >string ." "\"VGhlIG1vbm9yYWlsIGlzIGEgZnJlZSBzZXJ2aWNlLg==\"" }
 }
 { $see-also base64> } ;
 
 HELP: base64>
-{ $values { "base64" "a string of base64 characters" } { "str" "a string" } }
+{ $values { "base64" "a string of base64 characters" } { "seq" sequence } }
 { $description "Converts a string in base64 encoding back into its binary representation." }
 { $examples
-    { $unchecked-example "\"VGhlIG1vbm9yYWlsIGlzIGEgZnJlZSBzZXJ2aWNlLg==\" base64> ." "\"The monorail is a free service.\"" }
+    { $example "USING: prettyprint base64 strings ;" "\"VGhlIG1vbm9yYWlsIGlzIGEgZnJlZSBzZXJ2aWNlLg==\" base64> >string ." "\"The monorail is a free service.\"" }
 }
 { $notes "This word will throw if the input string contains characters other than those allowed in base64 encodings." }
 { $see-also >base64 } ;
 
+ARTICLE: "base64" "Base 64 conversions"
+"The " { $vocab-link "base64" } " vocabulary implements conversions of sequences to printable characters in base 64. These plain-text representations of binary data may be passed around and converted back to binary data later." $nl
+"Converting to base 64:"
+{ $subsection >base64 }
+"Converting back to binary:"
+{ $subsection base64> } ;
+
+ABOUT: "base64"

basis/base64/base64.factor

@@ -43,7 +43,7 @@ PRIVATE>
     [ [ "" ] [ >base64-rem ] if-empty ]
     bi* append ;
 
-: base64> ( base64 -- str )
+: base64> ( base64 -- seq )
     #! input length must be a multiple of 4
     [ 4 <groups> [ decode4 ] map concat ]
     [ [ CHAR: = = ] count-end ]