Print the quickfix (or location-list) history and switch to selected list

qfhistory.vim

vim9script

# Print the quickfix (or location-list) history and switch to the selected list
# Alternative: https://github.com/bfrg/vim-qf-history

def Errorlists(loclist: bool)
    const Xgetlist = loclist ? function('getloclist', [0]) : function('getqflist')
    const nr: number = Xgetlist({nr: '$'}).nr
    if !nr
        echomsg 'No entries'
        return
    endif
    execute loclist ? 'lhistory' : 'chistory'
    echohl Question
    inputsave()
    const answer: number = input('Switch to ' .. (loclist ? 'location-list' : 'quickfix') .. ' number: ', '')->str2nr()
    inputrestore()
    echohl None
    if answer < 1
        return
    endif
    silent execute ':' .. (answer > nr ? nr : answer) .. (loclist ? 'lhistory' : 'chistory')
enddef

nnoremap <leader>ch <scriptcmd>Errorlists(false)<cr>
nnoremap <leader>lh <scriptcmd>Errorlists(true)<cr>