From 745425458beda1905597f9299b231a2ac001d18c Mon Sep 17 00:00:00 2001
From: Ubuntu <ubuntu@localhost.localdomain>
Date: Sun, 14 Jun 2026 15:32:31 +0800
Subject: [PATCH] fix: remove /s flag in markdown regex, add conversation
 delete

---
 app.py         |   2 +-
 chat.db        | Bin 61440 -> 61440 bytes
 fix_chat_js.py |  29 +++++++++++++++++++++++++++++
 fix_chat_v2.py |  27 +++++++++++++++++++++++++++
 4 files changed, 57 insertions(+), 1 deletion(-)
 create mode 100644 fix_chat_js.py
 create mode 100644 fix_chat_v2.py

diff --git a/app.py b/app.py
index 4965349..c5770b2 100644
--- a/app.py
+++ b/app.py
@@ -269,7 +269,7 @@ function _md(s){
   s=s.replace(/\*(.+?)\*/g,'<em>$1</em>');
   // Lists
   s=s.replace(/^\s*[-*]\s+(.+)$/gm,'<li>$1</li>');
-  s=s.replace(/(<li>.*<\/li>)/s,'<ul>$1</ul>');
+  s=s.replace(/(<li>[^]*?<\/li>)/g,function(m){return '<ul>'+m+'</ul>';});
   // Line breaks (double newline = paragraph)
   s=s.replace(/\n\n/g,'</p><p>');
   s=s.replace(/\n/g,'<br>');
diff --git a/chat.db b/chat.db
index 20999600d5f41a690803bf31935faafa09266bb0..59f61d4f64ea8963890a5c2094cb377e0cb549c5 100644
GIT binary patch
delta 405
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delta 113
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diff --git a/fix_chat_js.py b/fix_chat_js.py
new file mode 100644
index 0000000..1be8307
--- /dev/null
+++ b/fix_chat_js.py
@@ -0,0 +1,29 @@
+"""Fix chat JS: remove duplicate _a() function, cleanup."""
+path = "/home/ubuntu/ai-chat/app.py"
+with open(path) as f:
+    content = f.read()
+
+# Remove the second (old) _a function that's overwriting the markdown one
+# It appears right after _md() returns
+old_dup = """  return '<p>'+s+'</p>';
+}
+function _a(r,t){var d=document.createElement("div");d.className="msg "+r;
+  var b=document.createElement("div");b.className="bb";b.textContent=t;
+  d.appendChild(b);document.getElementById("cht").appendChild(d);
+  document.getElementById("cht").scrollTop=document.getElementById("cht").scrollHeight;}"""
+
+new_clean = """  return '<p>'+s+'</p>';
+}"""
+
+content = content.replace(old_dup, new_clean)
+
+with open(path, "w") as f:
+    f.write(content)
+
+# Verify syntax: count _a definitions
+count = content.count("function _a(r,t){")
+print(f"Chat app fixed. _a definitions: {count} (should be 1)")
+if count != 1:
+    print("WARNING: Still have duplicate _a functions!")
+else:
+    print("OK - single _a function with markdown support")
diff --git a/fix_chat_v2.py b/fix_chat_v2.py
new file mode 100644
index 0000000..fbd71e7
--- /dev/null
+++ b/fix_chat_v2.py
@@ -0,0 +1,27 @@
+"""Fix chat JS: replace the problematic /s regex flag with safe alternative."""
+path = "/home/ubuntu/ai-chat/app.py"
+
+with open(path) as f:
+    content = f.read()
+
+# Replace the problematic regex with /s flag
+old = """s=s.replace(/(<li>.*<\\/li>)/s,'<ul>$1</ul>');"""
+new = """s=s.replace(/(<li>[^]*?<\\/li>)/g,function(m){return '<ul>'+m+'</ul>';});"""
+
+if old in content:
+    content = content.replace(old, new)
+    print("Fixed /s flag regex")
+else:
+    print("Pattern not found, checking alternatives...")
+    # Try unescaped version
+    old2 = "s=s.replace(/(<li>.*<\\/li>)/s,'<ul>$1</ul>');"
+    if old2 in content:
+        content = content.replace(old2, new)
+        print("Fixed (alt)")
+
+with open(path, "w") as f:
+    f.write(content)
+
+# Verify: count the _md function
+count = content.count("function _md(s)")
+print(f"_md definitions: {count}")