diff --git a/ui-tui/src/app.tsx b/ui-tui/src/app.tsx
index b6ecf42e71..6cd3775d39 100644
--- a/ui-tui/src/app.tsx
+++ b/ui-tui/src/app.tsx
@@ -14,6 +14,7 @@ import { Thinking } from './components/thinking.js'
 import { COMMANDS, HOTKEYS, INTERPOLATION_RE, MAX_CTX, PLACEHOLDERS, TOOL_VERBS, ZERO } from './constants.js'
 import { type GatewayClient, type GatewayEvent } from './gatewayClient.js'
 import * as inputHistory from './lib/history.js'
+import { writeOsc52Clipboard } from './lib/osc52.js'
 import { upsert } from './lib/messages.js'
 import { estimateRows, flat, fmtK, hasInterpolation, pick, userDisplay } from './lib/text.js'
 import { DEFAULT_THEME, fromSkin, type Theme } from './theme.js'
@@ -661,7 +662,7 @@ export function App({ gw }: { gw: GatewayClient }) {
             return true
           }
 
-          process.stdout.write(`\x1b]52;c;${Buffer.from(target.text).toString('base64')}\x07`)
+          writeOsc52Clipboard(target.text)
           sys('copied to clipboard')
 
           return true
diff --git a/ui-tui/src/components/markdown.tsx b/ui-tui/src/components/markdown.tsx
index 99f24a59b1..adee83ad28 100644
--- a/ui-tui/src/components/markdown.tsx
+++ b/ui-tui/src/components/markdown.tsx
@@ -8,50 +8,51 @@ function MdInline({ t, text }: { t: Theme; text: string }) {
   const re = /(\[(.+?)\]\((https?:\/\/[^\s)]+)\)|\*\*(.+?)\*\*|`([^`]+)`|\*(.+?)\*|(https?:\/\/[^\s]+))/g
 
   let last = 0
-  let match: RegExpExecArray | null
 
-  while ((match = re.exec(text)) !== null) {
-    if (match.index > last) {
+  for (const m of text.matchAll(re)) {
+    const i = m.index ?? 0
+
+    if (i > last) {
       parts.push(
         <Text color={t.color.cornsilk} key={parts.length}>
-          {text.slice(last, match.index)}
+          {text.slice(last, i)}
         </Text>
       )
     }
 
-    if (match[2] && match[3]) {
+    if (m[2] && m[3]) {
       parts.push(
         <Text color={t.color.amber} key={parts.length} underline>
-          {match[2]}
+          {m[2]}
         </Text>
       )
-    } else if (match[4]) {
+    } else if (m[4]) {
       parts.push(
         <Text bold color={t.color.cornsilk} key={parts.length}>
-          {match[4]}
+          {m[4]}
         </Text>
       )
-    } else if (match[5]) {
+    } else if (m[5]) {
       parts.push(
         <Text color={t.color.amber} dimColor key={parts.length}>
-          {match[5]}
+          {m[5]}
         </Text>
       )
-    } else if (match[6]) {
+    } else if (m[6]) {
       parts.push(
         <Text color={t.color.cornsilk} italic key={parts.length}>
-          {match[6]}
+          {m[6]}
         </Text>
       )
-    } else if (match[7]) {
+    } else if (m[7]) {
       parts.push(
         <Text color={t.color.amber} key={parts.length} underline>
-          {match[7]}
+          {m[7]}
         </Text>
       )
     }
 
-    last = match.index + match[0].length
+    last = i + m[0].length
   }
 
   if (last < text.length) {
diff --git a/ui-tui/src/lib/osc52.ts b/ui-tui/src/lib/osc52.ts
new file mode 100644
index 0000000000..01688aca6a
--- /dev/null
+++ b/ui-tui/src/lib/osc52.ts
@@ -0,0 +1,3 @@
+export function writeOsc52Clipboard(s: string): void {
+  process.stdout.write('\x1b]52;c;' + Buffer.from(s, 'utf8').toString('base64') + '\x07')
+}