How to use 'sel' and 'match' both in a visual and regex snippet?

[YaoYYoung]

{
	trigger: "n", 
	replacement: (sel) => { 
		sel = sel.split('\n').map(line => `> ${line}`).join('\n'); // 换行之后加上 '> '
		sel = `> [!note]+ \$1\n` + sel + '\n\n'; // 添加 callout 相关头尾字符
		return sel;
	}, 
	options: "vtA"
},

The snippet above is a well-executed, and there are several steps to use it:

• already copy/cut the title text
• already selecte some content text
• press n, then this snippet will automatically expand a callout in the note > [!note] style
• and thanks to $1, I can directly paste the title in the callout title position where cursor lies

This snippet saves my time, and it's easy to generalize the idea that I can intergrate some frequently-used callout styles into a "similar" regex snippet.

So I created the following snippet which however doesn't work.

{
	trigger: /(e|i|t|f|q)/, 
	replacement: (sel,match) => { // 🔴 maybe something wrong about using both in meantime?
		const callcharacter = match[1]; 
		let calloutstyle; 
		switch (callcharacter) { 
			case "e": calloutstyle = `error`; break; 
			case "i": calloutstyle = `important`; break; 
			case "t": calloutstyle = `tip`; break; 
			case "f": calloutstyle = `fail`; break; 
			case "q": calloutstyle = `question`; break; 
		} 
		
		sel = sel.split('\n').map(line => `> ${line}`).join('\n'); // 每行前面加上 '> '
		sel = `> [!${calloutstyle}]+ \$1\n` + sel + '\n\n'; // 添加
		return sel; 
	}, 
	options: "rvtA" // 🔴 maybe something wrong about 'rv' case?
},

I don't know what's wrong. Waiting for help😭

[YaoYYoung]

And after practice, I think it is not an excellent way to set trigger like above, because those selected texts always contain $0$, $1$, ... which include placeholders $0，$1 and so on. The previous code will destroy these existing numbers. Therefore,

• for the callout content, I just use customized shortcut Alt + Q to append prefix > ;
• for the callout title, I simplify the code to just append prefix > [!***]+ ;

{trigger: "n", replacement: "> [!note]+ ${VISUAL}", options: "vtA"},
{trigger: "!", replacement: "> [!important]+ ${VISUAL}", options: "vtA"},
{trigger: "1", replacement: "> [!important]+ ${VISUAL}", options: "vtA"},
{trigger: "/", replacement: "> [!question]+ ${VISUAL}", options: "vtA"},
{trigger: "?", replacement: "> [!question]+ ${VISUAL}", options: "vtA"},
{trigger: "g", replacement: "> [!askgpt]+ ${VISUAL}", options: "vtA"},

But still, I don't know how to integrate those snippets into one in options: "rvtA" mode.

It seems like to be the conflict to use sel and match simultaneously. Still don't know why.

[YaoYYoung]

As an exception, regex and visual are mutually exclusive.

which lies in load your snippet variables from files.

Sorry for my stupid neglect.