Skip to content

fix(webchat): render standalone HTML replies as code blocks #6074

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
stablegenius49 wants to merge 1 commit into
base: master
Choose a base branch
from
Open

fix(webchat): render standalone HTML replies as code blocks #6074

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
18 changes: 17 additions & 1 deletion dashboard/src/components/chat/message_list_comps/MessagePartsRenderer.vue
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -63,7 +63,8 @@
<!-- Text (Markdown) -->
<MarkdownRender
v-else-if="renderPart.part.type === 'plain' && renderPart.part.text && renderPart.part.text.trim()"
custom-id="message-list" :custom-html-tags="['ref']" :content="renderPart.part.text" :typewriter="false"
custom-id="message-list" :custom-html-tags="['ref']"
:content="normalizeMarkdownContent(renderPart.part.text)" :typewriter="false"
class="markdown-content" :is-dark="isDark" :monacoOptions="{ theme: isDark ? 'vs-dark' : 'vs-light' }" />

<!-- Image -->
Expand Down Expand Up @@ -151,6 +152,21 @@ const emitDownloadFile = (file) => {
emit('download-file', file);
};

const isMarkdownCodeFence = (text) => /^(```|~~~)/.test(text.trim());

const looksLikeStandaloneHtml = (text) => {
const normalized = text.trim();
if (!normalized) return false;
if (!/(<!doctype\s+html|<html\b|<head\b|<body\b)/i.test(normalized)) return false;
Copy link
Contributor

@gemini-code-assist gemini-code-assist bot Mar 11, 2026

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

medium

To more accurately detect standalone HTML documents, it's better to anchor the regex to the start of the string. This ensures that we only match text that begins with an HTML tag, preventing false positives on content that merely contains HTML tags somewhere in the middle.

    if (!/^(<!doctype\s+html|<html\b|<head\b|<body\b)/i.test(normalized)) return false;

return /(<\/html>|<\/body>|<\/head>|<form\b|<input\b|<button\b)/i.test(normalized);
};

const normalizeMarkdownContent = (text) => {
if (typeof text !== 'string') return text;
if (isMarkdownCodeFence(text) || !looksLikeStandaloneHtml(text)) return text;
return `\`\`\`\`html\n${text}\n\`\`\`\``;
};

const formatDuration = (seconds) => {
if (seconds < 1) {
return `${Math.round(seconds * 1000)}ms`;
Expand Down