From 692175f5b04648602314ec0a87ecc115c57200f1 Mon Sep 17 00:00:00 2001
From: ed <s@ocv.me>
Date: Sat, 1 Jun 2024 20:56:15 +0000
Subject: [PATCH] md-editor autoindent was duplicating hr markers

only keep characters `>+-*` if there's less than three of them,
and discard entire prefix if there's more

markdown spec only cares about exactly-one or three-or-more, but
let's keep pairs in case anyone use that as unconventional markup
---
 copyparty/web/md2.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/copyparty/web/md2.js b/copyparty/web/md2.js
index e54af570..c59fa056 100644
--- a/copyparty/web/md2.js
+++ b/copyparty/web/md2.js
@@ -607,10 +607,10 @@ function md_newline() {
     var s = linebounds(true),
         ln = s.md.substring(s.n1, s.n2),
         m1 = /^( *)([0-9]+)(\. +)/.exec(ln),
-        m2 = /^[ \t>+-]*(\* )?/.exec(ln),
+        m2 = /^[ \t]*[>+*-]{0,2}[ \t]/.exec(ln),
         drop = dom_src.selectionEnd - dom_src.selectionStart;
 
-    var pre = m2[0];
+    var pre = m2 ? m2[0] : '';
     if (m1 !== null)
         pre = m1[1] + (parseInt(m1[2]) + 1) + m1[3];