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attempt to call a nil value #1652
Description
I got this error message:
Error detected while processing function <SNR>23_debounceTimeTimerCallback[1]..<SNR>23_mapFSourceCallback[1]..<SNR>23_
distinctUntilChangedSourceCallback[14]..<SNR>23_filterSourceCallback[6]..<SNR>23_switchMapInputSourceCallback[8]..<SNR
>23_takeUntilFactory[7]..<SNR>23_mapFSource[3]..<SNR>23_filterConditionSource[3]..<SNR>23_materializeFSource[3]..<SNR>
23_createFn[11]..<SNR>22_request_create[6]..lsp#utils#step#start[1]..<SNR>168_next[9]..<lambda>85[1]..<SNR>22_ensure_f
lush[1]..lsp#utils#step#start[1]..<SNR>168_next[9]..<lambda>87[1]..<SNR>22_ensure_start[15]..<SNR>168_callback[1]..<SN
R>168_next[9]..<lambda>88[1]..<SNR>22_ensure_init[6]..<SNR>168_callback[1]..<SNR>168_next[9]..<lambda>89[1]..<SNR>22_e
nsure_conf[14]..<SNR>168_callback[1]..<SNR>168_next[9]..<lambda>90[1]..<SNR>22_ensure_open[16]..<SNR>168_callback[1]..
<SNR>168_next[9]..<lambda>91[1]..<SNR>22_ensure_changed[25]..<SNR>22_text_changes[12]..script /Users/workspace/.vim/p
lugged/vim-lsp/autoload/lsp/utils/diff.vim[43]..function <SNR>189_init_lua:
line 24:
attempt to call a nil value
vim --version
VIM - Vi IMproved 9.2 (2026 Feb 14, compiled Mar 03 2026 19:50:15)
macOS version - arm64
Included patches: 1-100
Compiled by Homebrew
Huge version without GUI. Features included (+) or not (-):
+acl +jumplist +sodium
+arabic +keymap +sound
+autocmd +lambda +spell
+autochdir +langmap +startuptime
-autoservername +libcall +statusline
-balloon_eval +linebreak -sun_workshop
+balloon_eval_term +lispindent +syntax
-browse +listcmds +tabpanel
++builtin_terms +localmap +tag_binary
+byte_offset +lua -tag_old_static
+channel +menu -tag_any_white
+cindent +mksession -tcl
+clientserver +modify_fname +termguicolors
+clipboard +mouse +terminal
+clipboard_provider -mouseshape +terminfo
+cmdline_compl +mouse_dec +termresponse
+cmdline_hist -mouse_gpm +textobjects
+cmdline_info -mouse_jsbterm +textprop
+comments +mouse_netterm +timers
+conceal +mouse_sgr +title
+cryptv -mouse_sysmouse -toolbar
+cscope +mouse_urxvt +user_commands
+cursorbind +mouse_xterm +vartabs
+cursorshape +multi_byte +vertsplit
+dialog_con +multi_lang +vim9script
+diff -mzscheme +viminfo
+digraphs +netbeans_intg +virtualedit
-dnd +num64 +visual
-ebcdic +packages +visualextra
+emacs_tags +path_extra +vreplace
+eval +perl -wayland
+ex_extra +persistent_undo -wayland_clipboard
+extra_search +popupwin -wayland_focus_steal
-farsi +postscript +wildignore
+file_in_path +printer +wildmenu
+find_in_path +profile +windows
+float -python +writebackup
+folding +python3 -X11
-footer +quickfix -xattr
+fork() +reltime -xfontset
+gettext +rightleft -xim
-hangul_input +ruby -xpm
+iconv +scrollbind -xsmp
+insert_expand +signs -xterm_clipboard
+ipv6 +smartindent -xterm_save
+job +socketserver
system vimrc file: "$VIM/vimrc"
user vimrc file: "$HOME/.vimrc"
2nd user vimrc file: "~/.vim/vimrc"
3rd user vimrc file: "~/.config/vim/vimrc"
user exrc file: "$HOME/.exrc"
defaults file: "$VIMRUNTIME/defaults.vim"
fall-back for $VIM: "/opt/homebrew/share/vim"
Compilation: clang -c -I. -Iproto -DHAVE_CONFIG_H -DMACOS_X -DMACOS_X_DARWIN -g -O2 -D_REENTRANT -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=1
Linking: clang -o vim -lm -lncurses -lsodium -liconv -lintl -framework AppKit -L/opt/homebrew/opt/lua/lib -llua5.5 -fstack-protector-strong -L/System/Library/Perl/5.34/darwin-thread-multi-2level/CORE -lperl -L/opt/homebrew/opt/python@3.14/Frameworks/Python.framework/Versions/3.14/lib/python3.14/config-3.14-darwin -lpython3.14 -framework CoreFoundation -lruby.4.0 -L/opt/homebrew/Cellar/ruby/4.0.1/libI did lots of research but I can't find any useful information.
Activity
jorjuth commentedon Mar 6, 2026
The same here - same Vim 9.2.0100 from Homebrew.
It worked with vim-9.2.0050 (tested on a not-updated environment), latest vim version has broken it.
wjf3121 commentedon Mar 9, 2026
This is caused by Vim 9.2.0100 being compiled against Lua 5.5 (via Homebrew), while Vim's
src/if_lua.chas no Lua 5.5 compatibility code. Thes:init_lua()call inautoload/lsp/utils/diff.vimfails, and because there's no error handling, the entire script aborts — meaninglsp#utils#diff#computenever gets defined.The upstream fix belongs in Vim (
if_lua.cneedsLUA_VERSION_NUM >= 505support), but vim-lsp can work around it by wrapping the Lua init in a try-catch so it gracefully falls back to the pure VimScript path:if s:has_lua && !exists('s:lua') - call s:init_lua() + try + call s:init_lua() + catch + let s:has_lua = 0 + endtry endifThis catches the Lua error and disables the Lua code path, so the VimScript fallback in
s:FirstDifference/s:LastDifferenceis used instead. Functionally identical, just slightly slower.