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mirror of https://github.com/SpaceVim/SpaceVim.git synced 2025-01-24 05:20:04 +08:00
SpaceVim/bundle/dein.vim/autoload/dein/util.vim
2022-06-15 23:59:27 +08:00

752 lines
23 KiB
VimL
Vendored

let s:is_windows = has('win32') || has('win64')
let s:merged_length = 3
function! dein#util#_init() abort
endfunction
function! dein#util#_set_default(var, val, ...) abort
if !exists(a:var) || type({a:var}) != type(a:val)
let alternate_var = get(a:000, 0, '')
let {a:var} = exists(alternate_var) ?
\ {alternate_var} : a:val
endif
endfunction
function! dein#util#_is_windows() abort
return s:is_windows
endfunction
function! dein#util#_is_mac() abort
return !s:is_windows && !has('win32unix')
\ && (has('mac') || has('macunix') || has('gui_macvim') ||
\ (!isdirectory('/proc') && executable('sw_vers')))
endfunction
function! dein#util#_get_base_path() abort
return g:dein#_base_path
endfunction
function! dein#util#_get_runtime_path() abort
if g:dein#_runtime_path !=# ''
return g:dein#_runtime_path
endif
let g:dein#_runtime_path = dein#util#_get_cache_path() . '/.dein'
call dein#util#_safe_mkdir(g:dein#_runtime_path)
return g:dein#_runtime_path
endfunction
function! dein#util#_get_cache_path() abort
if g:dein#_cache_path !=# ''
return g:dein#_cache_path
endif
let g:dein#_cache_path = dein#util#_substitute_path(
\ get(g:, 'dein#cache_directory', g:dein#_base_path)
\ . '/.cache/' . fnamemodify(dein#util#_get_myvimrc(), ':t'))
call dein#util#_safe_mkdir(g:dein#_cache_path)
return g:dein#_cache_path
endfunction
function! dein#util#_get_vimrcs(vimrcs) abort
return !empty(a:vimrcs) ?
\ map(dein#util#_convert2list(a:vimrcs),
\ { _, val -> dein#util#_substitute_path(expand(val)) }) :
\ [dein#util#_get_myvimrc()]
endfunction
function! dein#util#_get_myvimrc() abort
let vimrc = $MYVIMRC !=# '' ? $MYVIMRC :
\ matchstr(split(dein#util#_redir('scriptnames'), '\n')[0],
\ '^\s*\d\+:\s\zs.*')
return dein#util#_substitute_path(vimrc)
endfunction
function! dein#util#_error(msg) abort
for mes in s:msg2list(a:msg)
echohl WarningMsg | echomsg '[dein] ' . mes | echohl None
endfor
endfunction
function! dein#util#_notify(msg) abort
call dein#util#_set_default(
\ 'g:dein#enable_notification', v:false)
call dein#util#_set_default(
\ 'g:dein#notification_icon', '')
call dein#util#_set_default(
\ 'g:dein#notification_time', 2000)
if !g:dein#enable_notification || a:msg ==# ''
call dein#util#_error(a:msg)
return
endif
let title = '[dein]'
if has('nvim')
if dein#util#_luacheck('notify')
" Use nvim-notify plugin
call luaeval('require("notify")(_A.msg, "info", {'.
\ 'timeout=vim.g["dein#notification_time"],'.
\ 'title=_A.title })',
\ { 'msg': a:msg, 'title': title })
else
call nvim_notify(a:msg, 1, {})
endif
else
if dein#is_available('vim-notification') ||
\ exists('g:loaded_notification')
" Use vim-notification plugin
call notification#show({
\ 'text': a:msg,
\ 'title': title,
\ 'wait': g:dein#notification_time,
\ })
else
call popup_notification(a:msg, {
\ 'title': title,
\ 'time': g:dein#notification_time,
\ })
endif
endif
endfunction
function! dein#util#_luacheck(module) abort
return luaeval('pcall(require, _A.module)', { 'module': a:module })
endfunction
function! dein#util#_chomp(str) abort
return a:str !=# '' && a:str[-1:] ==# '/' ? a:str[: -2] : a:str
endfunction
function! dein#util#_uniq(list) abort
let list = copy(a:list)
let i = 0
let seen = {}
while i < len(list)
let key = list[i]
if key !=# '' && has_key(seen, key)
call remove(list, i)
else
if key !=# ''
let seen[key] = 1
endif
let i += 1
endif
endwhile
return list
endfunction
function! dein#util#_is_fish() abort
return dein#install#_is_async() && fnamemodify(&shell, ':t:r') ==# 'fish'
endfunction
function! dein#util#_is_powershell() abort
return dein#install#_is_async() && fnamemodify(&shell, ':t:r') =~? 'powershell\|pwsh'
endfunction
function! dein#util#_check_lazy_plugins() abort
return map(filter(dein#util#_get_lazy_plugins(), { _, val ->
\ isdirectory(val.rtp)
\ && !get(val, 'local', 0)
\ && get(val, 'hook_source', '') ==# ''
\ && get(val, 'hook_add', '') ==# ''
\ && !isdirectory(val.rtp . '/plugin')
\ && !isdirectory(val.rtp . '/after/plugin')
\ }), { _, val -> val.name })
endfunction
function! dein#util#_check_clean() abort
let plugins_directories = map(values(dein#get()), { _, val -> val.path })
let path = dein#util#_substitute_path(
\ globpath(dein#util#_get_base_path(), 'repos/*/*/*', v:true))
return filter(split(path, "\n"),
\ { _, val -> isdirectory(val)
\ && fnamemodify(val, ':t') !=# 'dein.vim'
\ && index(plugins_directories, val) < 0
\ })
endfunction
function! dein#util#_cache_writefile(list, path) abort
if !filewritable(dein#util#_get_cache_path())
return 1
endif
let path = dein#util#_get_cache_path() . '/' . a:path
return dein#util#_safe_writefile(a:list, path)
endfunction
function! dein#util#_safe_writefile(list, path, ...) abort
if g:dein#_is_sudo
return 1
endif
call dein#util#_safe_mkdir(fnamemodify(a:path, ':h'))
return writefile(a:list, a:path, get(a:000, 0, ''))
endfunction
function! dein#util#_safe_mkdir(path) abort
if g:dein#_is_sudo || isdirectory(a:path)
return 1
endif
return mkdir(a:path, 'p')
endfunction
function! dein#util#_get_type(name) abort
return get(dein#parse#_get_types(), a:name, {})
endfunction
function! dein#util#_save_cache(vimrcs, is_state, is_starting) abort
if dein#util#_get_cache_path() ==# '' || !a:is_starting
" Ignore
return 1
endif
let plugins = deepcopy(dein#get())
for plugin in values(plugins)
if !a:is_state
let plugin.sourced = 0
endif
if has_key(plugin, 'orig_opts')
call remove(plugin, 'orig_opts')
endif
if has_key(plugin, 'called')
call remove(plugin, 'called')
endif
" Hooks
for hook in filter([
\ 'hook_add', 'hook_source',
\ 'hook_post_source', 'hook_post_update',
\ ], { _, val -> has_key(plugin, val)
\ && type(plugin[val]) == v:t_func })
call remove(plugin, hook)
endfor
endfor
call dein#util#_safe_mkdir(g:dein#_base_path)
let src = [plugins, g:dein#_ftplugin]
call dein#util#_safe_writefile(
\ has('nvim') ? [json_encode(src)] : [js_encode(src)],
\ get(g:, 'dein#cache_directory', g:dein#_base_path)
\ .'/cache_' . g:dein#_progname)
endfunction
function! dein#util#_check_vimrcs() abort
let time = getftime(dein#util#_get_runtime_path())
let ret = !empty(filter(map(copy(g:dein#_vimrcs),
\ { _, val -> getftime(expand(val)) }),
\ { _, val -> time < val }))
if !ret
return 0
endif
call dein#clear_state()
return ret
endfunction
function! dein#util#_save_state(is_starting) abort
if g:dein#_block_level != 0
call dein#util#_error('Invalid dein#save_state() usage.')
return 1
endif
if dein#util#_get_cache_path() ==# '' || !a:is_starting || g:dein#_is_sudo
" Ignore
return 1
endif
if get(g:, 'dein#auto_recache', v:false)
call dein#util#_notify('auto recached')
call dein#recache_runtimepath()
endif
let g:dein#_vimrcs = dein#util#_uniq(g:dein#_vimrcs)
let &runtimepath = dein#util#_join_rtp(dein#util#_uniq(
\ dein#util#_split_rtp(&runtimepath)), &runtimepath, '')
call dein#util#_save_cache(g:dein#_vimrcs, 1, a:is_starting)
" Version check
let lines = [
\ 'if g:dein#_cache_version !=# ' . g:dein#_cache_version . ' || ' .
\ 'g:dein#_init_runtimepath !=# ' . string(g:dein#_init_runtimepath) .
\ ' | throw ''Cache loading error'' | endif',
\ 'let [s:plugins, s:ftplugin] = dein#min#_load_cache_raw('.
\ string(g:dein#_vimrcs) .')',
\ "if empty(s:plugins) | throw 'Cache loading error' | endif",
\ 'let g:dein#_plugins = s:plugins',
\ 'let g:dein#_ftplugin = s:ftplugin',
\ 'let g:dein#_base_path = ' . string(g:dein#_base_path),
\ 'let g:dein#_runtime_path = ' . string(g:dein#_runtime_path),
\ 'let g:dein#_cache_path = ' . string(g:dein#_cache_path),
\ 'let g:dein#_on_lua_plugins = ' . string(g:dein#_on_lua_plugins),
\ 'let &runtimepath = ' . string(&runtimepath),
\ ]
if g:dein#_off1 !=# ''
call add(lines, g:dein#_off1)
endif
if g:dein#_off2 !=# ''
call add(lines, g:dein#_off2)
endif
" Add dummy mappings/commands
for plugin in dein#util#_get_lazy_plugins()
for command in get(plugin, 'dummy_commands', [])
call add(lines, 'silent! ' . command[1])
endfor
for mapping in get(plugin, 'dummy_mappings', [])
call add(lines, 'silent! ' . mapping[2])
endfor
endfor
" Add hooks
if !empty(g:dein#_hook_add)
let lines += s:skipempty(g:dein#_hook_add)
endif
for plugin in filter(dein#util#_tsort(values(dein#get())),
\ { _, val ->
\ isdirectory(val.path) && (!has_key(val, 'if') || eval(val.if))
\ })
if has_key(plugin, 'hook_add') && type(plugin.hook_add) == v:t_string
let lines += s:skipempty(plugin.hook_add)
endif
" Invalid hooks detection
for key in keys(filter(copy(plugin),
\ { key, val -> stridx(key, 'hook_') == 0
\ && type(val) != v:t_string }))
call dein#util#_error(
\ printf('%s: "%s" must be string to save state',
\ plugin.name, key))
endfor
endfor
" Add events
for [event, plugins] in filter(items(g:dein#_event_plugins),
\ { _, val -> exists('##' . val[0]) })
call add(lines, printf('autocmd dein-events %s call '
\. 'dein#autoload#_on_event("%s", %s)',
\ (exists('##' . event) ? event . ' *' : 'User ' . event),
\ event, string(plugins)))
endfor
" Add inline vimrcs
for vimrc in get(g:, 'dein#inline_vimrcs', [])
let lines += filter(readfile(vimrc),
\ { _, val -> val !=# '' && val !~# '^\s*"' })
endfor
let state = get(g:, 'dein#cache_directory', g:dein#_base_path)
\ . '/state_' . g:dein#_progname . '.vim'
call dein#util#_safe_writefile(lines, state)
endfunction
function! dein#util#_clear_state() abort
let base = get(g:, 'dein#cache_directory', g:dein#_base_path)
for cache in glob(base.'/state_*.vim', v:true, v:true)
\ + glob(base.'/cache_*', v:true, v:true)
call delete(cache)
endfor
endfunction
function! dein#util#_begin(path, vimrcs) abort
if !exists('#dein')
call dein#min#_init()
endif
if a:path ==# '' || g:dein#_block_level != 0
call dein#util#_error('Invalid begin/end block usage.')
return 1
endif
let g:dein#_block_level += 1
let g:dein#_base_path = dein#util#_expand(a:path)
if g:dein#_base_path[-1:] ==# '/'
let g:dein#_base_path = g:dein#_base_path[: -2]
endif
call dein#util#_get_runtime_path()
call dein#util#_get_cache_path()
let g:dein#_vimrcs = dein#util#_get_vimrcs(a:vimrcs)
if exists('g:dein#inline_vimrcs')
let g:dein#_vimrcs += g:dein#inline_vimrcs
endif
let g:dein#_hook_add = ''
if has('vim_starting')
" Filetype off
if (!has('nvim') && get(g:, 'did_load_filetypes', v:false))
\ || (has('nvim') && !get(g:, 'do_filetype_lua', v:false))
let g:dein#_off1 = 'filetype off'
execute g:dein#_off1
endif
if exists('b:did_indent') || exists('b:did_ftplugin')
let g:dein#_off2 = 'filetype plugin indent off'
execute g:dein#_off2
endif
else
execute 'set rtp-='.fnameescape(g:dein#_runtime_path)
execute 'set rtp-='.fnameescape(g:dein#_runtime_path.'/after')
endif
" Insert dein runtimepath to the head in 'runtimepath'.
let rtps = dein#util#_split_rtp(&runtimepath)
let idx = index(rtps, dein#util#_substitute_path($VIMRUNTIME))
if idx < 0
call dein#util#_error('Invalid runtimepath.')
return 1
endif
if fnamemodify(a:path, ':t') ==# 'plugin'
\ && index(rtps, fnamemodify(a:path, ':h')) >= 0
call dein#util#_error('You must not set the installation directory'
\ .' under "&runtimepath/plugin"')
return 1
endif
call insert(rtps, g:dein#_runtime_path, idx)
call dein#util#_add_after(rtps, g:dein#_runtime_path.'/after')
let &runtimepath = dein#util#_join_rtp(rtps,
\ &runtimepath, g:dein#_runtime_path)
endfunction
function! dein#util#_end() abort
if g:dein#_block_level != 1
call dein#util#_error('Invalid begin/end block usage.')
return 1
endif
let g:dein#_block_level -= 1
if !has('vim_starting')
call dein#source(filter(values(g:dein#_plugins),
\ { _, val -> !val.lazy && !val.sourced && val.rtp !=# '' }))
endif
" Add runtimepath
let rtps = dein#util#_split_rtp(&runtimepath)
let index = index(rtps, g:dein#_runtime_path)
if index < 0
call dein#util#_error('Invalid runtimepath.')
return 1
endif
let depends = []
let sourced = has('vim_starting') &&
\ (!exists('&loadplugins') || &loadplugins)
for plugin in filter(values(g:dein#_plugins),
\ { _, val -> !empty(val)
\ && !val.lazy && !val.sourced && val.rtp !=# ''
\ && (!has_key(v:val, 'if') || eval(v:val.if)) })
" Load dependencies
if has_key(plugin, 'depends')
let depends += plugin.depends
endif
if !plugin.merged
call insert(rtps, plugin.rtp, index)
if isdirectory(plugin.rtp.'/after')
call dein#util#_add_after(rtps, plugin.rtp.'/after')
endif
endif
let plugin.sourced = sourced
endfor
let &runtimepath = dein#util#_join_rtp(rtps, &runtimepath, '')
if !empty(depends)
call dein#source(depends)
endif
for multi in filter(copy(g:dein#_multiple_plugins),
\ { _, val -> dein#is_available(val.plugins) })
if has_key(multi, 'hook_add')
let g:dein#_hook_add .= "\n" . substitute(
\ multi.hook_add, '\n\s*\\', '', 'g')
endif
endfor
if g:dein#_hook_add !=# ''
call dein#util#_execute_hook({}, g:dein#_hook_add)
endif
for [event, plugins] in filter(items(g:dein#_event_plugins),
\ { _, val -> exists('##' . val[0]) })
execute printf('autocmd dein-events %s call '
\. 'dein#autoload#_on_event("%s", %s)',
\ (exists('##' . event) ? event . ' *' : 'User ' . event),
\ event, string(plugins))
endfor
for vimrc in get(g:, 'dein#inline_vimrcs', [])
execute 'source' fnameescape(vimrc)
endfor
if !has('vim_starting')
call dein#call_hook('add')
call dein#call_hook('source')
call dein#call_hook('post_source')
endif
endfunction
function! dein#util#_config(arg, dict) abort
let name = type(a:arg) == v:t_dict ?
\ g:dein#name : a:arg
let dict = type(a:arg) == v:t_dict ?
\ a:arg : a:dict
if !has_key(g:dein#_plugins, name)
\ || g:dein#_plugins[name].sourced
return {}
endif
let plugin = g:dein#_plugins[name]
let options = extend({'repo': plugin.repo}, dict)
return dein#parse#_add(options.repo, options, v:true)
endfunction
function! dein#util#_call_hook(hook_name, ...) abort
let hook = 'hook_' . a:hook_name
let plugins = filter(dein#util#_tsort(
\ dein#util#_get_plugins((a:0 ? a:1 : []))),
\ { _, val ->
\ ((a:hook_name !=# 'source'
\ && a:hook_name !=# 'post_source') || val.sourced)
\ && has_key(val, hook) && isdirectory(val.path)
\ && (!has_key(val, 'if') || eval(val.if))
\ })
for plugin in plugins
call dein#util#_execute_hook(plugin, plugin[hook])
endfor
endfunction
function! dein#util#_execute_hook(plugin, hook) abort
" Skip twice call
if !has_key(a:plugin, 'called')
let a:plugin.called = {}
endif
if has_key(a:plugin.called, string(a:hook))
return
endif
try
let g:dein#plugin = a:plugin
if type(a:hook) == v:t_string
call s:execute(a:hook)
else
call call(a:hook, [])
endif
let a:plugin.called[string(a:hook)] = v:true
catch
call dein#util#_error(
\ 'Error occurred while executing hook: ' .
\ get(a:plugin, 'name', ''))
call dein#util#_error(v:exception)
endtry
endfunction
function! dein#util#_set_hook(plugins, hook_name, hook) abort
let names = empty(a:plugins) ? keys(dein#get()) :
\ dein#util#_convert2list(a:plugins)
for name in names
if !has_key(g:dein#_plugins, name)
call dein#util#_error(name . ' is not found.')
return 1
endif
let plugin = g:dein#_plugins[name]
let plugin[a:hook_name] =
\ type(a:hook) != v:t_string ? a:hook :
\ substitute(a:hook, '\n\s*\\\|\%(^\|\n\)\s*"[^\n]*', '', 'g')
if a:hook_name ==# 'hook_add'
call dein#util#_call_hook('add', plugin)
endif
endfor
endfunction
function! dein#util#_tsort(plugins) abort
let sorted = []
let mark = {}
for target in a:plugins
call s:tsort_impl(target, mark, sorted)
endfor
return sorted
endfunction
function! dein#util#_split_rtp(runtimepath) abort
if stridx(a:runtimepath, '\,') < 0
let rtps = split(a:runtimepath, ',')
else
let split = split(a:runtimepath, '\\\@<!\%(\\\\\)*\zs,')
let rtps = map(split,
\ { _, val -> substitute(val, '\\\([\\,]\)', '\1', 'g') })
endif
return map(rtps, { _, val -> dein#util#_substitute_path(val) })
endfunction
function! dein#util#_join_rtp(list, runtimepath, rtp) abort
return (stridx(a:runtimepath, '\,') < 0 && stridx(a:rtp, ',') < 0) ?
\ join(a:list, ',') : join(map(copy(a:list),
\ { _, val -> s:escape(val) }), ',')
endfunction
function! dein#util#_add_after(rtps, path) abort
let idx = index(a:rtps, dein#util#_substitute_path($VIMRUNTIME))
call insert(a:rtps, a:path, (idx <= 0 ? -1 : idx + 1))
endfunction
function! dein#util#_expand(path) abort
let path = (a:path =~# '^\~') ? fnamemodify(a:path, ':p') :
\ (a:path =~# '^\$\h\w*') ? substitute(a:path,
\ '^\$\h\w*', '\=eval(submatch(0))', '') :
\ a:path
return (s:is_windows && path =~# '\\') ?
\ dein#util#_substitute_path(path) : path
endfunction
function! dein#util#_substitute_path(path) abort
return ((s:is_windows || has('win32unix')) && a:path =~# '\\') ?
\ tr(a:path, '\', '/') : a:path
endfunction
function! dein#util#_convert2list(expr) abort
return type(a:expr) ==# v:t_list ? copy(a:expr) :
\ type(a:expr) ==# v:t_string ?
\ (a:expr ==# '' ? [] : split(a:expr, '\r\?\n', 1))
\ : [a:expr]
endfunction
function! dein#util#_split(expr) abort
return type(a:expr) ==# v:t_list ? copy(a:expr) :
\ split(a:expr, '\r\?\n')
endfunction
function! dein#util#_redir(cmd) abort
if exists('*execute')
return execute(a:cmd)
else
let [save_verbose, save_verbosefile] = [&verbose, &verbosefile]
set verbose=0 verbosefile=
redir => res
silent! execute a:cmd
redir END
let [&verbose, &verbosefile] = [save_verbose, save_verbosefile]
return res
endif
endfunction
function! dein#util#_get_lazy_plugins() abort
return filter(values(g:dein#_plugins),
\ { _, val -> !val.sourced && val.rtp !=# '' })
endfunction
function! dein#util#_get_plugins(plugins) abort
return empty(a:plugins) ?
\ values(dein#get()) :
\ filter(map(dein#util#_convert2list(a:plugins),
\ { _, val -> type(val) == v:t_dict ? val : dein#get(val) }),
\ { _, val -> !empty(val) })
endfunction
function! dein#util#_disable(names) abort
for plugin in map(filter(dein#util#_convert2list(a:names),
\ { _, val ->
\ has_key(g:dein#_plugins, val) && !g:dein#_plugins[val].sourced
\ }), { _, val -> g:dein#_plugins[val]})
if has_key(plugin, 'dummy_commands')
for command in plugin.dummy_commands
silent! execute 'delcommand' command[0]
endfor
let plugin.dummy_commands = []
endif
if has_key(plugin, 'dummy_mappings')
for map in plugin.dummy_mappings
silent! execute map[0].'unmap' map[1]
endfor
let plugin.dummy_mappings = []
endif
call remove(g:dein#_plugins, plugin.name)
endfor
endfunction
function! dein#util#_download(uri, outpath) abort
if !exists('g:dein#download_command')
let g:dein#download_command =
\ executable('curl') ?
\ 'curl --silent --location --output' :
\ executable('wget') ?
\ 'wget -q -O' : ''
endif
if g:dein#download_command !=# ''
return printf('%s "%s" "%s"',
\ g:dein#download_command, a:outpath, a:uri)
elseif dein#util#_is_windows()
" Use powershell
" Todo: Proxy support
let pscmd = printf("(New-Object Net.WebClient).DownloadFile('%s', '%s')",
\ a:uri, a:outpath)
return printf('powershell -Command "%s"', pscmd)
else
return 'E: curl or wget command is not available!'
endif
endfunction
function! s:tsort_impl(target, mark, sorted) abort
if empty(a:target) || has_key(a:mark, a:target.name)
return
endif
let a:mark[a:target.name] = 1
if has_key(a:target, 'depends')
for depend in a:target.depends
call s:tsort_impl(dein#get(depend), a:mark, a:sorted)
endfor
endif
call add(a:sorted, a:target)
endfunction
function! dein#util#_check_install(plugins) abort
if g:dein#_is_sudo
return
endif
if !empty(a:plugins)
let invalids = filter(dein#util#_convert2list(a:plugins),
\ { _, val -> empty(dein#get(val)) })
if !empty(invalids)
call dein#util#_error('Invalid plugins: ' . string(invalids))
return -1
endif
endif
let plugins = empty(a:plugins) ? values(dein#get()) :
\ map(dein#util#_convert2list(a:plugins),
\ { _, val -> dein#get(val) })
let plugins = filter(plugins, { _, val -> !isdirectory(val.path) })
if empty(plugins) | return 0 | endif
call dein#util#_notify('Not installed plugins: ' .
\ string(map(plugins, { _, val -> val.name })))
return 1
endfunction
function! s:msg2list(expr) abort
return type(a:expr) ==# v:t_list ? a:expr : split(a:expr, '\n')
endfunction
function! s:skipempty(string) abort
return filter(split(a:string, '\n'), { _, val -> val !=# '' })
endfunction
function! s:escape(path) abort
" Escape a path for runtimepath.
return substitute(a:path, ',\|\\,\@=', '\\\0', 'g')
endfunction
function! dein#util#escape_match(str) abort
return escape(a:str, '~\.^$[]')
endfunction
function! s:execute(expr) abort
if exists('*execute')
return execute(split(a:expr, '\n'), '')
endif
let dummy = '_dein_dummy_' .
\ substitute(reltimestr(reltime()), '\W', '_', 'g')
execute 'function! '.dummy."() abort\n"
\ . a:expr . "\nendfunction"
call {dummy}()
execute 'delfunction' dummy
endfunction
function! s:neovim_version() abort
return str2float(matchstr(execute('version'), 'NVIM v\zs\d\.\d\.\d'))
endfunction