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<?xml version="1.0"?>
<foo
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:noNamespaceSchemaLocation="decimal-1.xsd">
    <!-- The good ones. -->
    <val> 0. </val>
    <val> .0 </val>
    <val> .10 </val>
    <val> 01. </val>
    <val> 000 </val>
    <val>123456789012345678</val>
    <val>-123456789012345678</val>
    <val>0.123456789012345678</val>
    <val>-0.123456789012345678</val>
    <!-- The bad ones. -->
    <val>.</val>
    <val>-</val>
    <val>+</val>
    <val>*</val>
    <val>- 1</val>
    <val>+ 1</val>
    <val>+ 0</val>
    <val>- 0</val>
</foo>