在Vim中扩展突出显示组

问题描述：

我想创建一个名为Italic的组，使其完全像 Normal，但带有斜体文本.我的Normal组是设置为

I want to create a group named Italic to be exactly like Normal but with text in italic. My Normal group is set to

Normal   ctermfg=251 ctermbg=234 guifg=#cccccc guibg=#242424

我的问题是:

正确的方法是添加term=italic 设置如下?

hi Italic term=italic ctermfg=251 ctermbg=234 guifg=#cccccc guibg=#242424

我想以一种通用的方式来做，即定义Italic这样该设置适用于所有颜色方案(以上仅适用于用于我当前的colorcheme).有办法做到吗?像

I want to do it in a generic fashion, i.e., define Italic such that the setting works for all colorschemes (the above will work only for my current colorscheme). Is there a way accomplish it? Something like

hi Italic extends Normal term=italic

答

要解决此问题，您可以按脚本创建突出显示组.这下面的函数采用三个字符串参数:要作为基础的组的名称突出显示，要创建的组的名称以及包含其他内容的字符串突出显示属性(或要覆盖的属性).

To solve this issue you can create the highlighting group by script. The function below takes three string arguments: name of the group to base highlighting on, name of the group to create, and string containing additional highlighting properties (or properties to overwrite).

function! ExtendHighlight(base, group, add)
    redir => basehi
    sil! exe 'highlight' a:base
    redir END
    let grphi = split(basehi, '\n')[0]
    let grphi = substitute(grphi, '^'.a:base.'\s\+xxx', '', '')
    sil exe 'highlight' a:group grphi a:add
endfunction

因此，通话

:call ExtendHighlight('Normal', 'Italic', 'term=italic')

创建一个名为Italic的新组，该组扩展了Normal突出显示的位置 term=italic属性字符串.

creates a new group called Italic that extends Normal highlighting by the term=italic attribute string.

请注意，自定义突出显示组在颜色方案上保持不变交换.若要更正此行为，您可以在当前颜色方案的变化.

Note that custom highlighting groups remain unchanged on color-scheme switching. To correct this behavior you can update the group when the current color-scheme changes.

:autocmd ColorScheme * call ExtendHighlight('Normal', 'Italic', 'term=italic')

在Vim中扩展突出显示组

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