如何通过vim-plug为指定文件类型选择性加载/禁用Vim插件？

Hey there! vim-plug has built-in tools and handy workarounds to handle exactly these kinds of file-type-specific plugin rules. Let's walk through both your scenarios clearly:

1. Load Plugin A Only for Python and C++ Files #

This is straightforward with vim-plug's for option, which is designed specifically for this use case. When declaring your plugin, add the for key to the options dictionary, specifying the file types you want to target.

Here's how to write it in your .vimrc (between plug#begin() and plug#end()):

Plug 'username/pluginA', {'for': ['python', 'cpp']}

• The for value accepts either a single string (for one file type, e.g., {'for': 'python'}) or a list of strings (for multiple types like above).
• vim-plug will delay loading Plugin A until you open a file of the specified types, which also helps keep your Vim startup fast.

2. Prevent Plugin B from Loading for HTML and PHP Files #

vim-plug doesn't have a direct "exclude" option, but we have two reliable ways to handle this:

Option 1: Use the Plugin's Built-In Load Toggle (If Available) #

Many plugins include a global variable like g:loaded_pluginB that, when set to 1, prevents the plugin from loading. You can set this variable only for the file types you want to exclude:

Add this after plug#end() in your .vimrc:

autocmd FileType html,php let g:loaded_pluginB = 1

Option 2: Unload the Plugin for Specific File Types #

If the plugin doesn't have a built-in toggle, use vim-plug's plug#unload() function to unload Plugin B when you open an HTML or PHP file. Again, add this after plug#end():

autocmd FileType html,php call plug#unload('username/pluginB')

• Pro tip: If you want to ensure the plugin never loads at all for these file types (even temporarily), you can combine this with autocmd VimEnter * to check the initial file type, but the FileType autocmd covers most cases since it triggers whenever you switch to a buffer of that type.

内容的提问来源于stack exchange，提问作者user9392253