TYPO3 Core

Annoying, especially in unit tests:

            'pi_flexform' => '
                <?xml version="1.0" encoding="utf-8" standalone="yes" ?>
                <T3FlexForms>
                    <data>
                        <sheet index="sDEF">
                            <language index="lDEF">
                                <field index="settings.persistenceIdentifier">
                                    <value index="vDEF">egon</value>
                                </field>
                            </language>
                        </sheet>
                    </data>
                </T3FlexForms>
            ',

above does NOT work.

            'pi_flexform' => '<?xml version="1.0" encoding="utf-8" standalone="yes" ?>
                <T3FlexForms>
                    <data>
                        <sheet index="sDEF">
                            <language index="lDEF">
                                <field index="settings.persistenceIdentifier">
                                    <value index="vDEF">egon</value>
                                </field>
                            </language>
                        </sheet>
                    </data>
                </T3FlexForms>
            ',

works.