零基础vim配置指南(24)：轻松实现自动补全功能

local cmp = require("cmp")
local lspkind = require("lspkind")
cmp.setup({
-- 设置代码片段引擎，用于根据代码片段补全
snippet = {
expand = function(args)
vim.fn["vsnip#anymous"](args.body)
end,
},

window = {
},

mapping = {
-- 选择上一个
['<C-p>'] = cmp.mapping.select_prev_item(),
-- 选择下一个
['<C-n>'] = cmp.mapping.select_next_item(),
-- 出现补全
['<A-.>'] = cmp.mapping(cmp.mapping.complete(), {'i', 'c'}),
-- 取消补全
['<A-,>'] = cmp.mapping({
i = cmp.mapping.abort(),
c = cmp.mapping.close(),
}),

-- 确认使用某个补全项
['<CR>'] = cmp.mapping.confirm({
select = true,
behavior = cmp.ConfirmBehavior.Replace
}),

-- 向上翻页
['<C-u>'] = cmp.mapping(cmp.mapping.scroll_docs(-4), {'i', 'c'}),
-- 向下翻页
['<C-d>'] = cmp.mapping(cmp.mapping.scroll_docs(4), {'i', 'c'}),
},

-- 补全来源
sources = cmp.config.sources({
{name = 'nvim_lsp'},
{name = 'vsnip'},
{name = 'buffer'},
{name = 'path'}
}),

--根据文件类型来选择补全来源
cmp.setup.filetype('gitcommit', {
sources = cmp.config.sources({
{name = 'buffer'}
})
}),

-- 命令模式下输入 `/` 启用补全
cmp.setup.cmdline('/', {
mapping = cmp.mapping.preset.cmdline(),
sources = {
{ name = 'buffer' }
}
}),

-- 命令模式下输入 `:` 启用补全
cmp.setup.cmdline(':', {
mapping = cmp.mapping.preset.cmdline(),
sources = cmp.config.sources({
{ name = 'path' }
}, {
{ name = 'cmdline' }
})
}),

-- 设置补全显示的格式
formatting = {
format = lspkind.cmp_format({
with_text = true,
maxwidth = 50,
before = function(entry, vim_item)
vim_item.menu = "[" .. string.upper(entry.source.name) .. "]"
return vim_item
end
}),
},
})