Document C++11 UCS-2 UCS-4 and C++17 UTF8 character literals support

2 files changed, 31 insertions, 1 deletions

diff --git a/Doc/Manual/CPlusPlus11.html b/Doc/Manual/CPlusPlus11.html
index f9281bd56..bdcd49735 100644
--- a/Doc/Manual/CPlusPlus11.html
+++ b/Doc/Manual/CPlusPlus11.html
@@ -714,6 +714,22 @@ const int SIZE = sizeof...(ClassName<int, int>);
 In the above example <tt>SIZE</tt> is of course wrapped as a constant.
 </p>
 
+<H3><a name="CPlusPlus11_new_char_literals">7.2.19 New character literals</a></H3>
+
+<p>
+C++11 adds support for UCS-2 and UCS-4 character literals.
+These character literals are preceded by either 'u' or 'U'.
+</p>
+
+<div class="code"><pre>
+char16_t a = u'a';
+char32_t b = U'b';
+</pre></div>
+
+<p>
+<b>Compatibility note:</b> SWIG-4.0.0 was the first version to support these Universal Coded Character Set (UCS) character literals.
+</p>
+
 <H3><a name="CPlusPlus11_new_string_literals">7.2.19 New string literals</a></H3>
 
 
diff --git a/Doc/Manual/CPlusPlus17.html b/Doc/Manual/CPlusPlus17.html
index 690173e6e..93d5b0ad2 100644
--- a/Doc/Manual/CPlusPlus17.html
+++ b/Doc/Manual/CPlusPlus17.html
@@ -32,6 +32,10 @@ There isn't much in C++17 that affects SWIG, however, work has only just begun o
 C++17 support.
 </p>
 
+<p>
+<b>Compatibility note:</b> SWIG-4.0.0 is the first version to support any C++17 features.
+</p>
+
 <H2><a name="CPlusPlus17_core_language_changes">8.2 Core language changes</a></H2>
 
 
@@ -67,10 +71,20 @@ namespace A {
 </pre>
 </div>
 
+<H3><a name="CPlusPlus17_u8_char_literals">8.2.2 UTF-8 character literals</a></H3>
+
 <p>
-<b>Compatibility note:</b> SWIG-4.0.0 was the first version to support nested namespace definitions.
+C++17 added UTF-8 (u8) character literals.
+These are of type char.
+Example:
 </p>
 
+<div class="code">
+<pre>
+char a = u8'a';
+</pre>
+</div>
+
 <H2><a name="CPlusPlus17_standard_library_changes">8.3 Standard library changes</a></H2>