Vim 中的智能换行

我一直想知道 Vim 是否有能力智能换行代码，以便它保持与缩进的行相同的缩进。我在其他一些文本编辑器（例如电子文本编辑器）上注意到了它，并发现它可以帮助我更轻松地理解我正在查看的内容。

例如而不是

<p>
    <a href="http://www.example.com">
        This is a bogus link, used to demonstrate
an example
    </a>
</p>

它会显示为

<p>
    <a href="somelink">
        This is a bogus link, used to demonstrate
        an example
    </a>
</p>

该功能已被2014年6月25日实施 http://article.gmane.org/gmane.editors.vim.devel/46204如补丁 7.4.338。随后有几个补丁完善了该功能，最后一个是 7.4.354，所以这就是您想要的版本。

:help breakindent
:help breakindentopt

下面摘录自 vim 帮助：

'breakindent'     'bri'   boolean (default off)
                          local to window
                          {not in Vi}
                          {not available when compiled without the |+linebreak|
                          feature}
        Every wrapped line will continue visually indented (same amount of
        space as the beginning of that line), thus preserving horizontal blocks
        of text.

'breakindentopt' 'briopt' string (default empty)
                          local to window
                          {not in Vi}
                          {not available when compiled without the |+linebreak|
                          feature}
        Settings for 'breakindent'. It can consist of the following optional
        items and must be seperated by a comma:
                  min:{n}     Minimum text width that will be kept after
                              applying 'breakindent', even if the resulting
                              text should normally be narrower. This prevents
                              text indented almost to the right window border
                              occupying lot of vertical space when broken.
                  shift:{n}   After applying 'breakindent', wrapped line
                              beginning will be shift by given number of
                              characters. It permits dynamic French paragraph
                              indentation (negative) or emphasizing the line
                              continuation (positive).
                  sbr         Display the 'showbreak' value before applying the 
                              additional indent.
        The default value for min is 20 and shift is 0.

与此相关的还有showbreak设置，这将以您指定的字符作为您的班次金额的后缀。

配置示例

" enable indentation
set breakindent

" ident by an additional 2 characters on wrapped lines, when line >= 40 characters, put 'showbreak' at start of line
set breakindentopt=shift:2,min:40,sbr

" append '>>' to indent
set showbreak=>>   

行为注意事项

如果您不指定sbr选项，任意showbreak附加到缩进的任何字符。去除sbr从上面的例子中会产生4个字符的有效缩进；通过该设置，如果您只想使用showbreak没有额外的缩进，指定shift:0.

您还可以给出负偏移，这将产生拖动的效果showbreak字符和换行文本放回到任何可用的缩进空间中。

当指定一个min值，如果终端宽度较窄，则移位量将被压缩，但是showbreak字符始终被保留。