ConTeXt XML：如何排版空白行、前导空格

Question

我有以下示例，其中一个<Line>是空白行，另一个有前导空格。ConTeXt 忽略了空白行并修剪了前导空格。我该如何关闭此功能？

\startbuffer[demo]
<?xml version="1.0" encoding="UTF-8"?>
<Reading>
<Header>Foo</Header>
<Line>Line #1</Line>
<Line>Line #2</Line>
<Line></Line>
<Line>  Line #3</Line>
</Reading>
\stopbuffer

\startxmlsetups xml:initialize
  \xmlsetsetup{#1}{*}{-}
  \xmlsetsetup{#1}{Book|Reading|Header|Line}{xml:*}
\stopxmlsetups

\xmlregistersetup{xml:initialize}

\startxmlsetups xml:Reading
  \startdocument
    \xmlflush{#1}
  \stopdocument
\stopxmlsetups

\startxmlsetups xml:Line
    \xmlflush{#1}\par
\stopxmlsetups

\xmlprocessbuffer{main}{demo}{}

Answer 1

使用\xmlflushspacewise遵守节点内的空格和换行符，并\dontleavehmode在之前使用，以便连续\par不会折叠。

\startbuffer[demo]
<?xml version="1.0" encoding="UTF-8"?>
<Reading>
<Header>Foo</Header>
<Line>Line #1</Line>
<Line>Line #2</Line>
<Line></Line>
<Line>  Line #3</Line>
</Reading>
\stopbuffer

\startxmlsetups xml:initialize
  \xmlsetsetup{#1}{*}{-}
  \xmlsetsetup{#1}{Book|Reading|Header|Line}{xml:*}
\stopxmlsetups

\xmlregistersetup{xml:initialize}

\startxmlsetups xml:Reading
  \startdocument
    \xmlflush{#1}
  \stopdocument
\stopxmlsetups

\startxmlsetups xml:Line
    \dontleavehmode\xmlflushspacewise{#1}\par
\stopxmlsetups

\xmlprocessbuffer{main}{demo}{}