Lua Conversion: Disable highlight after search when a motion is triggered or when entering insert mode

Question

Author: @purpleP
Source: Turn off highlight on CursorMoved and InsertEnter without remapping (doesn't break search operator pending mode)

noremap <expr> <Plug>(StopHL) execute('nohlsearch')[-1]
noremap! <expr> <Plug>(StopHL) execute('nohlsearch')[-1]

fu! HlSearch()
    let s:pos = match(getline('.'), @/, col('.') - 1) + 1
    if s:pos != col('.')
        call StopHL()
    endif
endfu

fu! StopHL()
    if !v:hlsearch || mode() isnot 'n'
        return
    else
        sil call feedkeys("\<Plug>(StopHL)", 'm')
    endif
endfu

augroup SearchHighlight
au!
    au CursorMoved * call HlSearch()
    au InsertEnter * call StopHL()
augroup end

For my init.lua config, I need this in Lua.

PS: I'm a newbie. Tried this for the first time. Please add some fixes to it.

vim.api.nvim_set_keymap('n', '<expr> <Plug>(StopHL)', "execute('nohlsearch')[-1]", { noremap = true })
vim.api.nvim_set_keymap('i', '<expr> <Plug>(StopHL)', "execute('nohlsearch')[-1]", { noremap = true })

function HlSearch()
    local pos = vim.fn.match(vim.fn.getline('.'), @/, vim.fn.col('.') - 1) + 1
    if pos ~= vim.fn.col('.') then
        StopHL()
    end
end

function StopHL()
    if not vim.v.hlsearch or vim.fn.mode() ~= 'n' then
        return
    else
        vim.cmd[[silent! call feedkeys("\<Plug>(StopHL)", 'm')]]
    end
end

vim.cmd('augroup SearchHighlight')
vim.cmd('autocmd!')
vim.cmd('autocmd CursorMoved * lua HlSearch()')
vim.cmd('autocmd InsertEnter * lua StopHL()')
vim.cmd('augroup end')

Error messages:

Error detected while processing /home/killerbee/.config/nvim/init.lua:
E5112: Error while creating lua chunk: /home/killerbee/.config/nvim/init.lua:7: unexpected symbol near '@'

Answer 1

Here is another attempt:

vim.api.nvim_set_keymap('n', '<Plug>(StopHL)', "execute('nohlsearch')[-1]", { noremap = true, expr = true })
vim.api.nvim_set_keymap('i', '<Plug>(StopHL)', "execute('nohlsearch')[-1]", { noremap = true, expr = true })

function HlSearch()
    local pos = vim.fn.match(vim.fn.getline('.'), vim.fn.getreg('/'), vim.fn.col('.') - 1) + 1
    if pos ~= vim.fn.col('.') then
        StopHL()
    end
end

function StopHL()
    if not vim.v.hlsearch or vim.fn.mode() ~= 'n' then
        return
    else
        vim.cmd[[silent! call feedkeys("\<Plug>(StopHL)", 'm')]]
    end
end

local searchHighlightGrp = vim.api.nvim_create_augroup('SearchHighlight', { clear = true })
vim.api.nvim_create_autocmd({"CursorMoved"}, {group = searchHighlightGrp, pattern = '*', callback = HlSearch})
vim.api.nvim_create_autocmd({"InsertEnter"}, {group = searchHighlightGrp, pattern = '*', callback = StopHL})

Answer 2

Here is a first version that is working:

vim.api.nvim_set_keymap('n', '<Plug>(StopHL)', "execute('nohlsearch')[-1]", { noremap = true, expr = true })
vim.api.nvim_set_keymap('i', '<Plug>(StopHL)', "execute('nohlsearch')[-1]", { noremap = true, expr = true })

function HlSearch()
    print('HlSearch')
    local pos = vim.fn.match(vim.fn.getline('.'), vim.fn.getreg('/'), vim.fn.col('.') - 1) + 1
    if pos ~= vim.fn.col('.') then
        StopHL()
    end
end

function StopHL()
    print('StopHL')
    if not vim.v.hlsearch or vim.fn.mode() ~= 'n' then
        return
    else
        vim.cmd[[silent! call feedkeys("\<Plug>(StopHL)", 'm')]]
    end
end

vim.cmd('augroup SearchHighlight')
vim.cmd('autocmd!')
vim.cmd('autocmd CursorMoved * lua HlSearch()')
vim.cmd('autocmd InsertEnter * lua StopHL()')
vim.cmd('augroup end')