fix(terminal,parser): accept OSC 52 payloads larger than 1 KiB

CHANGELOG.md

@@ -9,6 +9,7 @@ Format follows [Keep a Changelog](https://keepachangelog.com/en/1.1.0/).
 - add `window.opacity` for a transparent background (compositor-dependent)
 
 ### Fixed
+- accept OSC 52 clipboard payloads larger than 1 KiB; copying long text over SSH no longer fails silently
 - honour SGR colon subparameters: `4:0` now turns underline off (was leaving the whole screen underlined) and `38:2:r:g:b` / `48:5:n` colours are applied
 
 ## [0.10.0] - 2026-07-25

Cargo.toml

@@ -31,7 +31,9 @@ softbuffer = "0.4"
 fontdue = "0.9"
 
 # ANSI/VT escape code parser
-vte = "0.13"
+# default-features = false swaps vte's fixed 1 KiB ArrayVec OSC buffer for a
+# growable Vec, so large OSC 52 clipboard payloads are not truncated.
+vte = { version = "0.13", default-features = false }
 
 # PTY backend (Linux/macOS: forkpty/posix_openpt)
 portable-pty = "0.9"

src/terminal/parser_test.rs

@@ -1045,6 +1045,22 @@ fn osc52_write_with_st_terminator() {
     assert_eq!(p.grid.pending_clipboard_write.as_deref(), Some("hello"));
 }
 
+#[test]
+fn osc52_write_handles_payload_larger_than_1kb() {
+    let mut p = make_parser(80, 24);
+    // ~1 KB of text -> ~1.3 KB of base64, past vte's 1024-byte OSC buffer
+    let text = "x".repeat(981);
+    let encoded = BASE64.encode(text.as_bytes());
+    let mut seq = b"\x1b]52;c;".to_vec();
+    seq.extend_from_slice(encoded.as_bytes());
+    seq.extend_from_slice(b"\x07");
+    p.process(&seq);
+    assert_eq!(
+        p.grid.pending_clipboard_write.as_deref(),
+        Some(text.as_str())
+    );
+}
+
 #[test]
 fn dec_line_drawing_box_chars() {
     let mut p = make_parser(80, 24);