Use a crossterm patch with unreleased changes

This patch of crossterm contains two yet-unreleased changes:

* Support for the "report alternate keys" part of the Kitty Keyboard
  Protocol. This part of the protocol lets us bind symbols in keymaps
  instead of key-presses. For example,  A-_  would be  A-S-minus
  without "report alternate keys" being enabled. Kakoune is another
  example consumer that uses this feature.
* A fix for the function that checks for Kitty Keyboard Protocol
  support. The latest release has a bug that forces the function to
  always detect no support.

Cargo.toml

@@ -31,3 +31,6 @@ inherits = "test"
 package.helix-core.opt-level = 2
 package.helix-tui.opt-level = 2
 package.helix-term.opt-level = 2
+
+[patch.crates-io]
+crossterm = { git = "https://github.com/crossterm-rs/crossterm", rev = "bca71adad70c36de3a4e13d7edc31c0ef9567f47" }

helix-term/Cargo.toml

@@ -41,7 +41,7 @@ which = "4.4"
 
 tokio = { version = "1", features = ["rt", "rt-multi-thread", "io-util", "io-std", "time", "process", "macros", "fs", "parking_lot"] }
 tui = { path = "../helix-tui", package = "helix-tui", default-features = false, features = ["crossterm"] }
-crossterm = { version = "0.25", features = ["event-stream"] }
+crossterm = { version = "0.26", features = ["event-stream"] }
 signal-hook = "0.3"
 tokio-stream = "0.1"
 futures-util = { version = "0.3", features = ["std", "async-await"], default-features = false }

helix-tui/Cargo.toml

@@ -19,7 +19,7 @@ default = ["crossterm"]
 bitflags = "1.3"
 cassowary = "0.3"
 unicode-segmentation = "1.10"
-crossterm = { version = "0.25", optional = true }
+crossterm = { version = "0.26", optional = true }
 termini = "0.1"
 serde = { version = "1", "optional" = true, features = ["derive"]}
 helix-view = { version = "0.6", path = "../helix-view", features = ["term"] }

helix-tui/src/backend/crossterm.rs

@@ -1,6 +1,6 @@
 use crate::{backend::Backend, buffer::Cell};
 use crossterm::{
-    cursor::{CursorShape, Hide, MoveTo, SetCursorShape, Show},
+    cursor::{Hide, MoveTo, SetCursorStyle, Show},
     execute, queue,
     style::{
         Attribute as CAttribute, Color as CColor, Print, SetAttribute, SetBackgroundColor,
@@ -156,12 +156,12 @@ where
 
     fn show_cursor(&mut self, kind: CursorKind) -> io::Result<()> {
         let shape = match kind {
-            CursorKind::Block => CursorShape::Block,
-            CursorKind::Bar => CursorShape::Line,
-            CursorKind::Underline => CursorShape::UnderScore,
+            CursorKind::Block => SetCursorStyle::SteadyBlock,
+            CursorKind::Bar => SetCursorStyle::SteadyBar,
+            CursorKind::Underline => SetCursorStyle::SteadyUnderScore,
             CursorKind::Hidden => unreachable!(),
         };
-        map_error(execute!(self.buffer, Show, SetCursorShape(shape)))
+        map_error(execute!(self.buffer, Show, shape))
     }
 
     fn get_cursor(&mut self) -> io::Result<(u16, u16)> {

helix-view/Cargo.toml

@@ -20,7 +20,7 @@ helix-core = { version = "0.6", path = "../helix-core" }
 helix-loader = { version = "0.6", path = "../helix-loader" }
 helix-lsp = { version = "0.6", path = "../helix-lsp" }
 helix-dap = { version = "0.6", path = "../helix-dap" }
-crossterm = { version = "0.25", optional = true }
+crossterm = { version = "0.26", optional = true }
 helix-vcs = { version = "0.6", path = "../helix-vcs" }
 
 # Conversion traits