diff options
Diffstat (limited to 'lib/stdlib/doc/src/unicode_usage.xml')
| -rw-r--r-- | lib/stdlib/doc/src/unicode_usage.xml | 13 |
1 files changed, 6 insertions, 7 deletions
diff --git a/lib/stdlib/doc/src/unicode_usage.xml b/lib/stdlib/doc/src/unicode_usage.xml index 0a75fbeec0..354ec58df3 100644 --- a/lib/stdlib/doc/src/unicode_usage.xml +++ b/lib/stdlib/doc/src/unicode_usage.xml @@ -69,12 +69,11 @@ strings.</p> <p>Character data may be combined from several sources, sometimes available in a mix of strings and binaries. Erlang has for long had the concept of <c>iodata</c> or <c>iolists</c>, where binaries and lists can be combined to represent a sequence of bytes. In the same way, the Unicode aware modules often allow for combinations of binaries and lists where the binaries have characters encoded in UTF-8 and the lists contain such binaries or numbers representing Unicode codepoints:</p> <code type="none"> unicode_binary() = binary() with characters encoded in UTF-8 coding standard -unicode_char() = integer() >= 0 representing valid Unicode codepoint chardata() = charlist() | unicode_binary() -charlist() = [unicode_char() | unicode_binary() | charlist()] - a unicode_binary is allowed as the tail of the list</code> +charlist() = maybe_improper_list(char() | unicode_binary() | charlist(), + unicode_binary() | nil())</code> <p>The module <c>unicode</c> in STDLIB even supports similar mixes with binaries containing other encodings than UTF-8, but that is a special case to allow for conversions to and from external data:</p> <code type="none"> external_unicode_binary() = binary() with characters coded in @@ -82,10 +81,10 @@ external_unicode_binary() = binary() with characters coded in external_chardata() = external_charlist() | external_unicode_binary() -external_charlist() = [unicode_char() | - external_unicode_binary() | - external_charlist()] - an external_unicode_binary() is allowed as the tail of the list</code> +external_charlist() = maybe_improper_list(char() | + external_unicode_binary() | + external_charlist(), + external_unicode_binary() | nil())</code> </section> <section> <title>Basic Language Support for Unicode</title> |