vscode.git: Poorly rendered author line when author name contains special characters or Markdown

[CSharperMantle]

Does this issue occur when all extensions are disabled?: Yes

• VS Code Version: 1.101.2
• OS Version: Microsoft Windows [Version 10.0.26120.4520]

Steps to Reproduce

Run the commands:

> mkdir test_repo
> cd test_repo\
> git init
Initialized empty Git repository in [path]
> git config --local user.name 'Test "Quoted" Name'
> git config --local user.email 'nobody@company.com'
> touch test_file
> git add .
> git commit -m "Test commit"
[main (root-commit) 56543c4] Test commit
 1 file changed, 0 insertions(+), 0 deletions(-)
 create mode 100644 test_file
> code .
>

Then go to "Source Control > Graph", hover over the commit and observe the poorly-rendered mailto: links and names.

Extra notes

The problem might be that the Markdown to be rendered is directly interpolated without special quoting for the "author" and "email" fields:

vscode/extensions/git/src/timelineProvider.ts

Lines 57 to 70 in 8e55c8d

	setItemDetails(uri: Uri, hash: string | undefined, shortHash: string | undefined, avatar: string | undefined, author: string, email: string | undefined, date: string, message: string, shortStat?: CommitShortStat, remoteSourceCommands: Command[] = []): void {
	this.tooltip = new MarkdownString('', true);
	this.tooltip.isTrusted = true;
	const avatarMarkdown = avatar
	? ``
	: '$(account)';
	if (email) {
	const emailTitle = l10n.t('Email');
	this.tooltip.appendMarkdown(`${avatarMarkdown} [**${author}**](mailto:${email} "${emailTitle} ${author}")`);
	} else {
	this.tooltip.appendMarkdown(`${avatarMarkdown} **${author}**`);
	}

If we modify the author name to be a image link, e.g. Test ![user](https://csmantle.top/favicon.ico|width=256,height=256), we can make VSCode render an image in the author line.

> git config --local user.name 'Test ![user](https://csmantle.top/favicon.ico|width=256,height=256)'
> touch test_1
> git add .
> git commit -m "Test commit 1"
[main d6d0054] Test commit 1
 1 file changed, 0 insertions(+), 0 deletions(-)
 create mode 100644 test_1
> code .
> 

---

Edit: Since vscode.git is built-in, disabling all extensions does not invalidate this issue.

[CSharperMantle]

Any updates on this?

[CSharperMantle]

@lszomoru, would you like to kindly give #255071 a review or some comments? Or are there any internal plans to address this problem in an approach other than that PR? Many thanks.