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authorBjörn Gustavsson <[email protected]>2017-03-17 12:33:17 +0100
committerBjörn Gustavsson <[email protected]>2017-03-17 13:22:41 +0100
commit6fe3935bc51c0fc62b2d740ac43e64ff276bbef8 (patch)
tree5b47e1be45697cf2e879ba0a1f04a493a0d59d54 /lib/stdlib/doc
parentfc3b5a1a287780bced92f2f1a1744bf86d7b9ba2 (diff)
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Update the documentation regarding Unicode atoms
Diffstat (limited to 'lib/stdlib/doc')
-rw-r--r--lib/stdlib/doc/src/unicode_usage.xml31
1 files changed, 19 insertions, 12 deletions
diff --git a/lib/stdlib/doc/src/unicode_usage.xml b/lib/stdlib/doc/src/unicode_usage.xml
index efc8b75075..a8ef8ff5c5 100644
--- a/lib/stdlib/doc/src/unicode_usage.xml
+++ b/lib/stdlib/doc/src/unicode_usage.xml
@@ -62,6 +62,10 @@
<item><p>In Erlang/OTP 17.0, the encoding default for Erlang
source files was switched to UTF-8.</p></item>
+
+ <item><p>In Erlang/OTP 20.0, atoms and function can contain
+ Unicode characters. Module names are still restricted to
+ the ISO-Latin-1 range.</p></item>
</list>
<p>This section outlines the current Unicode support and gives some
@@ -339,9 +343,10 @@
<tag>The language</tag>
<item>
<p>Having the source code in UTF-8 also allows you to write string
- literals containing Unicode characters with code points &gt; 255,
- although atoms, module names, and function names are restricted to
- the ISO Latin-1 range. Binary literals, where you use type
+ literals, function names, and atoms containing Unicode
+ characters with code points &gt; 255.
+ Module names are still restricted to the ISO Latin-1 range.
+ Binary literals, where you use type
<c>/utf8</c>, can also be expressed using Unicode characters &gt; 255.
Having module names using characters other than 7-bit ASCII can cause
trouble on operating systems with inconsistent file naming schemes,
@@ -432,15 +437,17 @@ external_charlist() = maybe_improper_list(char() | external_unicode_binary() |
<section>
<title>Basic Language Support</title>
- <p><marker id="unicode_in_erlang"/>As from Erlang/OTP R16, Erlang source
- files can be written in UTF-8 or bytewise (<c>latin1</c>) encoding. For
- information about how to state the encoding of an Erlang source file, see
- the <seealso marker="stdlib:epp#encoding"><c>epp(3)</c></seealso> module.
- Strings and comments can be written using Unicode, but functions must
- still be named using characters from the ISO Latin-1 character set, and
- atoms are restricted to the same ISO Latin-1 range. These restrictions in
- the language are of course independent of the encoding of the source
- file.</p>
+ <p><marker id="unicode_in_erlang"/>As from Erlang/OTP R16, Erlang
+ source files can be written in UTF-8 or bytewise (<c>latin1</c>)
+ encoding. For information about how to state the encoding of an
+ Erlang source file, see the <seealso
+ marker="stdlib:epp#encoding"><c>epp(3)</c></seealso> module. As
+ from Erlang/OTP R16, strings and comments can be written using
+ Unicode. As from Erlang/OTP 20, also atoms and functions can be
+ written using Unicode. Modules names must still be named using
+ characters from the ISO Latin-1 character set. (These
+ restrictions in the language are independent of the encoding of
+ the source file.)</p>
<section>
<title>Bit Syntax</title>