Relative format numbers are less flexible now

Cf. <php/php-src#9950> and <https://externals.io/message/119258>.
php · Jan 11, 2023 · cf220d0 · cf220d0
1 parent 0f27fad
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diff --git a/appendices/migration82/incompatible.xml b/appendices/migration82/incompatible.xml
@@ -14,6 +14,11 @@
    <methodname>DateTimeImmutable::createFromMutable</methodname> now has a tentative
    return type of <type>static</type>, previously it was <type>DateTimeImmutable</type>.
   </para>
+
+  <para>
+   <literal>number</literal> symbols in <link linkend="datetime.formats.relative">relative formats</link>
+   no longer accept a plus sign followed by a minus sign, e.g. <literal>+-2</literal>.
+  </para>
  </sect2>
 
  <sect2 xml:id="migration82.incompatible.odbc">

diff --git a/reference/datetime/formats.xml b/reference/datetime/formats.xml
@@ -1159,6 +1159,13 @@ object(DateTimeImmutable)#1 (3) {
       </thead>
       <tbody>
        <row>
+        <entry>8.2.0</entry>
+        <entry>
+         <literal>number</literal> no longer accepts a plus sign followed by a minus sign,
+         e.g. <literal>+-2</literal>.
+        </entry>
+       </row>
+      <row>
         <entry>7.0.8</entry>
         <entry>
          Weeks always start on monday. Formerly, sunday would also be considered