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删除条目和说明上方/下方的空间

tag-icon • tag-icon spacing lists context itemize description
删除条目和说明上方/下方的空间

在下面的文档中，项目嵌套在描述中，并且我希望条目之间没有垂直空间。

我使用 删除了 itemize 和 description 上方和下方的空间\vskip-\parskip，但这可能不是正确的方法。如果 itemize 是 description 中的第一个内容，则此方法无效。

我尝试使用joinedup并nowhite如图所示这里，但间距仍然存在。

如何删除项目和描述上方/下方的空间？

代码：

\definedescription[description][
    alternative=left,
    width=2em,
    before={\vskip-\parskip},  %<<< ?
    after={\vskip-\parskip},   %<<< ?
]

\setupitemize[each][packed][   % [joinedup,nowhite] don't change spacing
    before={\vskip-\parskip},  %<<< ?
    after={\vskip-\parskip},   %<<< ?
]

\starttext

    \startdescription{Foo}
        \input knuth
    \stopdescription

    \startdescription{Bar}
        \startitemize
        \item ↑ Too much space above ↑
        \item Just some Text
        \item Just some Text
        \stopitemize
    \stopdescription

    \startdescription{Baz}
        A line that contains some text. A line that contains some text. A line that contains some text. 
        \startitemize
        \item Just some Text
        \item Just some Text
        \item Just some Text
        \stopitemize
        A line that contains some text. A line that contains some text. A line that contains some text. 
    \stopdescription

\stoptext

结果：

输出文件

使用的 ConTeXt 版本是2013.05.28 00:36。

答案1

例如，当您使用嵌套 itemize 时，ConTeXt 会删除此类空格

\startitemize
  \item 
    \startitemize
      \item One
      \item Two
    \stopitemize
\stopitemize

但没有高级接口。不过，很容易提供一个包装器来包装低级命令

\unprotect
\define\concatitemgroup{\hskip\d_strc_itemgroups_signal}
\protect

然后使用

\startdescription{Bar}
  \concatitemgroup
  \startitemize
    \item ↑ Too much space above ↑
    \item Just some Text
    \item Just some Text
  \stopitemize
\stopdescription

不幸的是你不能使用

\startitemize[before=\concatitemgroup]

因为before在中触发得太晚了\startitemize。对于自动工作流程，您可以定义自己的描述渲染设置。

\unprotect
\startsetups[\??constructionrenderings:leftconcat]
    \directsetup{\??constructionrenderings:\v!left:\v!none}
    \hskip\d_strc_itemgroups_signal
\stopsetups

\defineconstructionalternative
  [leftconcat]
  [\c!renderingsetup=\??constructionrenderings:leftconcat]

\def\concatitemgroup{\hskip\d_strc_itemgroups_signal}

\protect

\definedescription
  [description]
  [
    alternative=leftconcat,
    width=2em,
  ]

\setupitemize[packed]

\starttext
    \startdescription{Bar}
      \startitemize
        \item ↑ Too much space above ↑
        \item Just some Text
        \item Just some Text
      \stopitemize
    \stopdescription

    \startdescription{Baz}
        A line that contains some text. A line that contains some text. A line that contains some text. 
        \startitemize
        \item Just some Text
        \item Just some Text
        \item Just some Text
        \stopitemize
        A line that contains some text. A line that contains some text. A line that contains some text. 
    \stopdescription
  \stoptext

这使

在此处输入图片描述

如果没有垂直空间，只需添加

\setupitemize[nowhite]

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