add xtgettcap support (#1157)

raphamorim · aymanbagabas · web-flow · commit 2c0dc19dcb76 · 2025-06-19T21:45:02.000+02:00
* add xtgettcap support

* update

* update handler tests

* add one more test

* single support instead

* Update docs/docs/escape-sequence-support.md

Co-authored-by: Ayman Bagabas &lt;ayman.bagabas@gmail.com&gt;

* add sixel and iterm2 to termcap

---------

Co-authored-by: Ayman Bagabas &lt;ayman.bagabas@gmail.com&gt;
diff --git a/docs/docs/escape-sequence-support.md b/docs/docs/escape-sequence-support.md
@@ -113,3 +113,4 @@ brevity.
 | ESCAPE    | STATUS   | NOTE                            |
 | --------- | -------- | ------------------------------- |
 | `DCS = s` | REJECTED | CSI ? 2026 h/l are used instead |
+| `DCS + q` | SUPPORTED | XTGETTCAP - Query terminal capabilities (only one capability per request is supported) |
diff --git a/docs/docs/releases.md b/docs/docs/releases.md
@@ -7,14 +7,10 @@ language: 'en'
 
 ## 0.2.20 (unreleased)
 
-- **Performance**: Implemented SIMD-accelerated UTF-8 validation throughout Rio terminal using the `simdutf8` crate.
-  - **Pure ASCII text**: 2.6-3.2x faster validation
-  - **Mixed UTF-8 content**: Up to 1536x faster validation
-  - **Heavy UTF-8 content**: Up to 479x faster validation
-  - **Architecture support**: AVX2/SSE4.2 (x86-64), NEON (ARM64), SIMD128 (WASM)
-  - **Automatic optimization**: Runtime detection selects fastest implementation available
-  - **Improved areas**: ANSI escape sequence parsing, terminal text processing, OSC parameter handling, hyperlink processing, image protocol parsing, and clipboard operations
-- TBD.
+- Performance: Implemented SIMD-accelerated UTF-8 validation throughout Rio terminal using the `simdutf8` crate.
+  - Architecture support: AVX2/SSE4.2 (x86-64), NEON (ARM64), SIMD128 (WASM)
+  - Automatic optimization: Runtime detection selects fastest implementation available
+- Support for XTGETTCAP (XTerm Get Termcap) escape sequence for querying terminal capabilities.
 
 ## 0.2.19
 
diff --git a/rio-backend/src/crosswords/mod.rs b/rio-backend/src/crosswords/mod.rs
@@ -2940,6 +2940,12 @@ impl<U: EventListener> Handler for Crosswords<U> {
             ..graphic
         });
     }
+
+    #[inline]
+    fn xtgettcap_response(&mut self, response: String) {
+        self.event_proxy
+            .send_event(RioEvent::PtyWrite(response), self.window_id);
+    }
 }
 
 pub struct CrosswordsSize {
diff --git a/rio-backend/src/performer/handler.rs b/rio-backend/src/performer/handler.rs

Original file line number	Diff line number	Diff line change
`@@ -2940,6 +2940,12 @@ impl<U: EventListener> Handler for Crosswords<U> {`
`2940`	`2940`	`..graphic`
`2941`	`2941`	`});`
`2942`	`2942`	`}`
	`2943`	`+`
	`2944`	`+ #[inline]`
	`2945`	`+ fn xtgettcap_response(&mut self, response: String) {`
	`2946`	`+ self.event_proxy`
	`2947`	`+ .send_event(RioEvent::PtyWrite(response), self.window_id);`
	`2948`	`+ }`
`2943`	`2949`	`}`
`2944`	`2950`
`2945`	`2951`	`pub struct CrosswordsSize {`