[vim/vim] Opening a simple tsx file with :syntax on crashes vim in macOS (Issue #17247)
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Kevin De Keyser
May 3, 2025, 5:32:58 AM5/3/25
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bvoq created an issue (vim/vim#17247)Steps to reproduce
Use an empty vim install and open the below .tsx file and type :syntax on.
You will see that only the top of the file is highlighted and after a bit of navigation vim crashes.
This was already reported at Herrington's repository here: HerringtonDarkholme/yats.vim#292
Here's an example .tsx file.
import { ChatBarButton, ChatBarButtonFactory } from "@api/ChatButtons";
import { Devs } from "@utils/constants";
import { sleep } from "@utils/misc";
import definePlugin from "@utils/types";
import { findByPropsLazy, findStoreLazy } from "@webpack";
import { DateUtils, FluxDispatcher, MessageStore, SelectedChannelStore, Tooltip, React, useState, useStateFromStores } from "@webpack/common";
import { Message } from "discord-types/general";
const MessageActions = findByPropsLazy("fetchMessages", "sendMessage");
function getTotalReactions(message: Message): number {
if (!message?.reactions) {
return 0;
}
return message.reactions.reduce((sum, reaction) => sum + (reaction.count ?? 0), 0);
}
function getOldestMessage(channelId: string): Message | undefined {
const messagesObj = MessageStore.getMessages(channelId);
const currentMessages = messagesObj?._array ?? [];
return currentMessages.reduce((oldest, msg) => {
if (!oldest || BigInt(msg.id) < BigInt(oldest.id)) {
return msg;
}
return oldest;
}, undefined as Message | undefined);
}
const LoadAndSortButton: ChatBarButtonFactory = ({ isMainChat }) => {
if (!isMainChat) return null;
const [isLoading, setIsLoading] = useState(false);
const currentChannelId = SelectedChannelStore.getChannelId();
const oldestMessageTimestampText = useStateFromStores(
[MessageStore, SelectedChannelStore],
() => {
const chanId = SelectedChannelStore.getChannelId();
if (!chanId) return "";
const oldestMsg = getOldestMessage(chanId);
if (!oldestMsg) return "";
return DateUtils.calendarFormat(oldestMsg.timestamp);
}
);
const handleLoadAndSortClick = async () => {
const channelId = SelectedChannelStore.getChannelId();
if (!channelId || isLoading) {
return;
}
if (!MessageActions?.fetchMessages) {
return;
}
setIsLoading(true);
const FETCH_LIMIT = 100;
let fetchError = null;
try {
const oldestMsg = getOldestMessage(channelId);
await MessageActions.fetchMessages({
channelId: channelId,
limit: FETCH_LIMIT,
before: oldestMsg?.id,
});
await sleep(100);
const messagesObj = MessageStore.getMessages(channelId);
const messagesArray = messagesObj?._array;
if (messagesArray && messagesArray.length > 0) {
messagesArray.sort((a, b) => getTotalReactions(a) - getTotalReactions(b));
if (messagesArray.length > 0) {
FluxDispatcher.dispatch({
type: "MESSAGE_UPDATE",
message: messagesArray[messagesArray.length - 1],
logMuted: true,
});
}
}
} catch (error) {
fetchError = error;
console.error(`Failed to fetch/sort messages for channel ${channelId}:`, error);
} finally {
setIsLoading(false);
}
};
const containerStyle: React.CSSProperties = {
display: 'flex',
alignItems: 'center',
gap: '8px',
};
const timestampStyle: React.CSSProperties = {
fontSize: '12px',
color: 'var(--text-muted)',
whiteSpace: 'nowrap',
userSelect: 'none',
};
return (
<div style={containerStyle}>
<ChatBarButton
tooltip={isLoading ? "Loading..." : "Load More Messages & Sort by Reactions"}
onClick={handleLoadAndSortClick}
disabled={isLoading}
>
<svg width="20" height="20" viewBox="0 0 24 24" fill="currentColor" style={{ transform: "scale(1.1)" }}>
{isLoading ? (
<>
<path d="M12,1A11,11,0,1,0,23,12,11,11,0,0,0,12,1Zm0,19a8,8,0,1,1,8-8A8,8,0,0,1,12,20Z" opacity=".25"/>
<path d={`M10.72,19.9a8,8,0,0,1-6.5-9.79A7.77,7.77,0,0,1,10.4,4.16a8,8,0,0,1,9.49,6.52A1.54,1.54,0,0,0,21.38,12h.13a1.37,1.37,0,0,0,1.38-1.54,11,11,0,1,0-12.7,12.1A1.52,1.52,0,0,0,12,21.34h0A1.47,1.47,0,0,0,10.72,19.9Z`}>
<animateTransform attributeName="transform" type="rotate" dur="0.75s" values="0 12 12;360 12 12" repeatCount="indefinite"/>
</path>
</>
) : (
<>
<path d="M4.75 8.75a.75.75 0 0 1 .75-.75h13a.75.75 0 0 1 0 1.5h-13a.75.75 0 0 1-.75-.75Zm0 4a.75.75 0 0 1 .75-.75h7.5a.75.75 0 0 1 0 1.5h-7.5a.75.75 0 0 1-.75-.75Zm4 4a.75.75 0 0 1 .75-.75h3.5a.75.75 0 0 1 0 1.5h-3.5a.75.75 0 0 1-.75-.75Z"/>
<path d="M17 12.75a.75.75 0 0 1 .75.75v6a.75.75 0 0 1-1.5 0v-6a.75.75 0 0 1 .75-.75Zm1.78 7.28a.75.75 0 0 1 0 1.06l-2.25 2.25a.75.75 0 0 1-1.06 0l-2.25-2.25a.75.75 0 1 1 1.06-1.06l1.72 1.72 1.72-1.72a.75.75 0 0 1 1.06 0Z"/>
</>
)}
</svg>
</ChatBarButton>
{oldestMessageTimestampText && (
<span style={timestampStyle}>
Oldest: {oldestMessageTimestampText}
</span>
)}
</div>
);
};
export default definePlugin({
name: "SortByReactions",
description: "Adds a button to the message bar. If you click it, it will load 100 more messages (Discord API limit) and sort them by reaction count. Pressing the button multiple times, will load more messages. It further displays how far back messages are loaded.",
authors: [Devs.bvoq],
renderChatBarButton: LoadAndSortButton,
});
Expected behaviour
Vim shouldn't crash and highlight the tsx file properly.
Version of Vim
9.1.754
Environment
Operating system: macOS
Terminal: iTerm2
Value of $TERM: xterm-256color
Shell: zsh
Logs and stack traces
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Christian Brabandt
May 3, 2025, 12:45:47 PM5/3/25
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chrisbra left a comment (vim/vim#17247)It's not actually crashing, you just lost syntax highlighting, right? Can you reproduce using vim --clean ?
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Christian Brabandt
May 3, 2025, 12:46:36 PM5/3/25
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chrisbra left a comment (vim/vim#17247)Oh and please also check :h :syn-sync
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Kevin De Keyser
May 3, 2025, 4:18:23 PM5/3/25
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bvoq left a comment (vim/vim#17247)It doesn't crash but it freezes completely.
If I run it with vim --clean I can't replicate the freezing (even though the .vimrc is empty).
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Christian Brabandt
May 4, 2025, 1:03:42 AM5/4/25
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chrisbra left a comment (vim/vim#17247)Then you need to find out what in your .vimrc is causing this
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Kevin De Keyser
May 5, 2025, 8:32:57 AM5/5/25
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bvoq left a comment (vim/vim#17247)Both my .vim and .vimrc are empty?
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Kevin De Keyser
May 5, 2025, 8:36:53 AM5/5/25
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bvoq left a comment (vim/vim#17247)This is the logs.
chdir(/usr/share/vim) fchdir() to previous dir sourcing "$VIM/vimrc" finished sourcing $VIM/vimrc chdir(/usr/share/vim/vim91) fchdir() to previous dir could not source "$VIMRUNTIME/macmap.vim" chdir(/Users/deke) fchdir() to previous dir could not source "$HOME/.vimrc" chdir(/Users/deke/.vim) fchdir() to previous dir could not source "~/.vim/vimrc" chdir(/Users/deke/.config/vim) fchdir() to previous dir could not source "~/.config/vim/vimrc" chdir(/Users/deke) fchdir() to previous dir could not source "$HOME/.exrc" chdir(/usr/share/vim/vim91) fchdir() to previous dir sourcing "$VIMRUNTIME/defaults.vim" finished sourcing $VIMRUNTIME/defaults.vim not found in 'packpath': "pack/*/start/*" chdir(/usr/share/vim/vim91/plugin) fchdir() to previous dir sourcing "/usr/share/vim/vim91/plugin/getscriptPlugin.vim" finished sourcing /usr/share/vim/vim91/plugin/getscriptPlugin.vim chdir(/usr/share/vim/vim91/plugin) fchdir() to previous dir sourcing "/usr/share/vim/vim91/plugin/gzip.vim" finished sourcing /usr/share/vim/vim91/plugin/gzip.vim chdir(/usr/share/vim/vim91/plugin) fchdir() to previous dir sourcing "/usr/share/vim/vim91/plugin/logiPat.vim" finished sourcing /usr/share/vim/vim91/plugin/logiPat.vim chdir(/usr/share/vim/vim91/plugin) fchdir() to previous dir sourcing "/usr/share/vim/vim91/plugin/manpager.vim" finished sourcing /usr/share/vim/vim91/plugin/manpager.vim chdir(/usr/share/vim/vim91/plugin) fchdir() to previous dir sourcing "/usr/share/vim/vim91/plugin/matchparen.vim" finished sourcing /usr/share/vim/vim91/plugin/matchparen.vim chdir(/usr/share/vim/vim91/plugin) fchdir() to previous dir sourcing "/usr/share/vim/vim91/plugin/netrwPlugin.vim" finished sourcing /usr/share/vim/vim91/plugin/netrwPlugin.vim chdir(/usr/share/vim/vim91/plugin) fchdir() to previous dir sourcing "/usr/share/vim/vim91/plugin/rrhelper.vim" finished sourcing /usr/share/vim/vim91/plugin/rrhelper.vim chdir(/usr/share/vim/vim91/plugin) fchdir() to previous dir sourcing "/usr/share/vim/vim91/plugin/spellfile.vim" finished sourcing /usr/share/vim/vim91/plugin/spellfile.vim chdir(/usr/share/vim/vim91/plugin) fchdir() to previous dir sourcing "/usr/share/vim/vim91/plugin/tarPlugin.vim" finished sourcing /usr/share/vim/vim91/plugin/tarPlugin.vim chdir(/usr/share/vim/vim91/plugin) fchdir() to previous dir sourcing "/usr/share/vim/vim91/plugin/tohtml.vim" finished sourcing /usr/share/vim/vim91/plugin/tohtml.vim chdir(/usr/share/vim/vim91/plugin) fchdir() to previous dir sourcing "/usr/share/vim/vim91/plugin/vimballPlugin.vim" finished sourcing /usr/share/vim/vim91/plugin/vimballPlugin.vim chdir(/usr/share/vim/vim91/plugin) fchdir() to previous dir sourcing "/usr/share/vim/vim91/plugin/zipPlugin.vim" finished sourcing /usr/share/vim/vim91/plugin/zipPlugin.vim not found in 'packpath': "pack/*/start/*" not found in 'runtimepath': "plugin/**/*.vim" Reading viminfo file "/Users/deke/.viminfo" info oldfiles "index.tsx" "index.tsx" 154L, 6015B Reading viminfo file "/Users/deke/.viminfo" marks Executing BufWinEnter Autocommands for "*" autocommand autocmd SafeState * ++once call s:Highlight_Matching_Pair() Executing BufEnter Autocommands for "*" autocommand sil call s:LocalBrowse(expand("<amatch>")) Executing VimEnter Autocommands for "*" autocommand sil call s:VimEnter(expand("<amatch>")) Executing CursorMoved Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing SafeState Autocommands for "*" autocommand call s:Highlight_Matching_Pair() chdir(/usr/share/vim/vim91/syntax) fchdir() to previous dir sourcing "/usr/share/vim/vim91/syntax/syntax.vim" chdir(/usr/share/vim/vim91/syntax) fchdir() to previous dir line 20: sourcing "/usr/share/vim/vim91/syntax/synload.vim" chdir(/usr/share/vim/vim91/syntax) fchdir() to previous dir line 22: sourcing "/usr/share/vim/vim91/syntax/syncolor.vim" chdir(/usr/share/vim/vim91/colors/lists) fchdir() to previous dir line 37: sourcing "/usr/share/vim/vim91/colors/lists/default.vim" finished sourcing /usr/share/vim/vim91/colors/lists/default.vim continuing in /usr/share/vim/vim91/syntax/syncolor.vim finished sourcing /usr/share/vim/vim91/syntax/syncolor.vim continuing in /usr/share/vim/vim91/syntax/synload.vim finished sourcing /usr/share/vim/vim91/syntax/synload.vim continuing in /usr/share/vim/vim91/syntax/syntax.vim chdir(/usr/share/vim/vim91) fchdir() to previous dir line 26: sourcing "/usr/share/vim/vim91/filetype.vim" not found in 'runtimepath': "ftdetect/*.vim" finished sourcing /usr/share/vim/vim91/filetype.vim continuing in /usr/share/vim/vim91/syntax/syntax.vim Executing FileType Autocommands for "*" autocommand 0verbose exe "set syntax=" . expand("<amatch>") Executing BufRead Autocommands for "*.tsx" autocommand setf typescriptreact Executing FileType Autocommands for "*" autocommand 0verbose exe "set syntax=" . expand("<amatch>") Executing BufRead Autocommands for "*" autocommand if !did_filetype() && expand("<amatch>") !~ g:ft_ignore_pat | runtime! scripts.vim | endif Executing BufRead Autocommands for "*" autocommand if !did_filetype() && expand("<amatch>") !~ g:ft_ignore_pat && (expand("<amatch>") =~# '\.conf$'^I|| getline(1) =~ '^#' || getline(2) =~ '^#'^I|| getline(3) =~ '^#' || getline(4) =~ '^#'^I|| getline(5) =~ '^#') | setf FALLBACK conf | endif finished sourcing /usr/share/vim/vim91/syntax/syntax.vim 'redrawtime' exceeded, syntax highlighting disabled Executing CursorMoved Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing CursorMoved Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing CursorMoved Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing WinScrolled Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing CursorMoved Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing WinScrolled Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing CursorMoved Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing WinScrolled Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing CursorMoved Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing WinScrolled Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing CursorMoved Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing WinScrolled Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing CursorMoved Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing WinScrolled Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing CursorMoved Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing WinScrolled Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing CursorMoved Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing WinScrolled Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing CursorMoved Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing WinScrolled Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing CursorMoved Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing WinScrolled Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing CursorMoved Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing WinScrolled Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing CursorMoved Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing WinScrolled Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing CursorMoved Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing WinScrolled Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing CursorMoved Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing WinScrolled Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing CursorMoved Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing WinScrolled Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing CursorMoved Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing WinScrolled Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing CursorMoved Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing WinScrolled Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing CursorMoved Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing WinScrolled Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing CursorMoved Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing WinScrolled Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing CursorMoved Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing WinScrolled Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing CursorMoved Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing WinScrolled Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing CursorMoved Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing WinScrolled Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing CursorMoved Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing WinScrolled Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing CursorMoved Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing WinScrolled Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing CursorMoved Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing WinScrolled Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing CursorMoved Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing WinScrolled Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing CursorMoved Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing WinScrolled Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing CursorMoved Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing WinScrolled Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing CursorMoved Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing WinScrolled Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing CursorMoved Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing WinScrolled Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing CursorMoved Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing WinScrolled Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing CursorMoved Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing WinScrolled Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing CursorMoved Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing WinScrolled Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing CursorMoved Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing WinScrolled Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing CursorMoved Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing WinScrolled Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing CursorMoved Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing WinScrolled Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing CursorMoved Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing WinScrolled Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing CursorMoved Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing WinScrolled Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing CursorMoved Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing WinScrolled Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing CursorMoved Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing WinScrolled Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing CursorMoved Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing WinScrolled Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing CursorMoved Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing CursorMoved Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing CursorMoved Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing WinScrolled Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing CursorMoved Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing WinScrolled Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing CursorMoved Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing WinScrolled Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing CursorMoved Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing WinScrolled Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing CursorMoved Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing WinScrolled Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing CursorMoved Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing WinScrolled Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing CursorMoved Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing WinScrolled Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing CursorMoved Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing WinScrolled Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing CursorMoved Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing WinScrolled Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing CursorMoved Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing WinScrolled Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing CursorMoved Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing WinScrolled Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing CursorMoved Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing CursorMoved Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing WinScrolled Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing CursorMoved Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing WinScrolled Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing CursorMoved Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing WinScrolled Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing CursorMoved Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing WinScrolled Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing CursorMoved Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Type :qa and press <Enter> to exit Vim Type :qa and press <Enter> to exit Vim Executing CursorMoved Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing CursorMoved Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing CursorMoved Autocommands for "*" autocommand call s:Highlight_Matching_Pair() Executing CursorMoved Autocommands for "*" autocommand call s:Highlight_Matching_Pair()
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Christian Brabandt
May 5, 2025, 8:48:04 AM5/5/25
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chrisbra left a comment (vim/vim#17247)if your .vimrc is empty, it could still be any plugin you installed.
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arLevi
Jan 24, 2026, 2:16:13 PMJan 24
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arLevi left a comment (vim/vim#17247)I used AI which also creates .tsx files, and to edit them I move these files to .txt edit them, then rename it back to tsx.
I use iTerm2 on MacOSX 14.8.3
When running with vim --clean the file starts with syntax highlight on - then I scroll down until it gets stuck, vim disables the syntax highlighting (black & white only) and I can continue to scrolldown, when I scroll up again - the part that was highlighted is also B&W now ... and I can scroll down & up freely.
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Eric Curtin
Feb 3, 2026, 8:42:48 AMFeb 3
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ericcurtin left a comment (vim/vim#17247)Can confirm the same, other users have also seen this:
Strangest vim bug ever seems typescript specific, freezes when I try to open this file:
https://lnkd.in/e7dySXMm
Use Hugging Face with JavaScript. Contribute to huggingface/huggingface.js development by creating an account on GitHub.
huggingface.js/packages/tasks/src/local-apps.ts at main · huggingface/huggingface.js
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Eric Curtin
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Principal Software Engineer working on AI at Docker, Inc
3h
That being said, easy temporary fix:
syntax off
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Ryan Petrello
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I had the same issue with my setup, adding this to my .vimrc helped:
set regexpengine=0
It seems related to vim's legacy regex engine for syntax highlighting being very slow for Typescript.
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dkearns
Feb 3, 2026, 9:45:48 AMFeb 3
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dkearns left a comment (vim/vim#17247)I had a quick look but I can't seem to reproduce it.
These reports should go through the upstream repo https://github.com/HerringtonDarkholme/yats.vim/.
HerringtonDarkholme/yats.vim#292 has been closed so perhaps it has been fixed, though it's not obvious from the issue.
Please report your findings here.
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Christian Brabandt
Feb 3, 2026, 10:31:54 AMFeb 3
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chrisbra left a comment (vim/vim#17247)Also, if you believe this is related to syntax highlighting, can you please follow this guide here: :h syntime and report the syntime for your file?
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colehdlr
Sep 11, 2026, 5:44:49 AMSep 11
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colehdlr left a comment (vim/vim#17247)For others facing this issue:
Adding set regexpengine=2 to your .vimrc will resolve the problem.
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dkearns
Sep 11, 2026, 6:20:57 AMSep 11
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dkearns left a comment (vim/vim#17247)Can someone try this?
diff --git a/runtime/syntax/shared/typescriptcommon.vim b/runtime/syntax/shared/typescriptcommon.vim index 1cb1740f8..29535a145 100644 --- a/runtime/syntax/shared/typescriptcommon.vim +++ b/runtime/syntax/shared/typescriptcommon.vim @@ -1948,12 +1948,12 @@ syntax match typescriptArrowFuncDef contained /\K\k*\s*=>/ \ nextgroup=@typescriptExpression,typescriptBlock \ skipwhite skipempty -syntax match typescriptArrowFuncDef contained /(\%(\_[^()]\+\|(\_[^()]*)\)*)\_s*=>/ +syntax match typescriptArrowFuncDef contained /(\_[^()]*\%((\_[^()]*)\_[^()]*\)*)\_s*=>/ \ contains=typescriptArrowFuncArg,typescriptArrowFunc,@typescriptCallSignature \ nextgroup=@typescriptExpression,typescriptBlock \ skipwhite skipempty -syntax region typescriptArrowFuncDef contained start=/(\%(\_[^()]\+\|(\_[^()]*)\)*):/ matchgroup=typescriptArrowFunc end=/=>/ +syntax region typescriptArrowFuncDef contained start=/(\_[^()]*\%((\_[^()]*)\_[^()]*\)*):/ matchgroup=typescriptArrowFunc end=/=>/ \ contains=typescriptArrowFuncArg,typescriptTypeAnnotation,@typescriptCallSignature \ nextgroup=@typescriptExpression,typescriptBlock \ skipwhite skipempty keepend
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Mime Čuvalo
Sep 12, 2026, 4:17:30 PM (13 days ago) Sep 12
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mimecuvalo left a comment (vim/vim#17247)ran into this myself as well. @dkearns thanks for taking on, your fix looks great!
- looks like this is a dupe of #18782
- also looks like this is in HerringtonDarkholme/yats.vim#160
why:
- this is an issue specifically for the macOS original system-provided vim (not via Homebrew)
- the macOS comes with regexpengine=1 instead of the default=0
- in
runtime/syntax/shared/typescriptcommon.vim:1951thetypescriptArrowFuncDefcauses a regex heavy regex backtrack
workaround (not 2 as suggested a couple comments above):
set regexpengine=0
hopefully Apple should change to the default if possible as well!
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bvoq
Sep 23, 2026, 3:41:54 AM (2 days ago) Sep 23
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bvoq left a comment (vim/vim#17247)I overwrote ~/.vim/syntax/shared/typescriptcommon.vim with your patch and can confirm that it is working @dkearns
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