diff options
| -rw-r--r-- | Cargo.lock | 1 | ||||
| -rw-r--r-- | helix-tui/Cargo.toml | 1 | ||||
| -rw-r--r-- | helix-tui/src/backend/crossterm.rs | 14 |
3 files changed, 14 insertions, 2 deletions
@@ -1202,6 +1202,7 @@ dependencies = [ "helix-core", "helix-view", "log", + "once_cell", "serde", "termini", "unicode-segmentation", diff --git a/helix-tui/Cargo.toml b/helix-tui/Cargo.toml index 3ca7e044..8a6d5367 100644 --- a/helix-tui/Cargo.toml +++ b/helix-tui/Cargo.toml @@ -22,6 +22,7 @@ unicode-segmentation = "1.10" crossterm = { version = "0.26", optional = true } termini = "0.1" serde = { version = "1", "optional" = true, features = ["derive"]} +once_cell = "1.17" log = "~0.4" helix-view = { version = "0.6", path = "../helix-view", features = ["term"] } helix-core = { version = "0.6", path = "../helix-core" } diff --git a/helix-tui/src/backend/crossterm.rs b/helix-tui/src/backend/crossterm.rs index e81c1e00..7c512ce3 100644 --- a/helix-tui/src/backend/crossterm.rs +++ b/helix-tui/src/backend/crossterm.rs @@ -15,6 +15,7 @@ use crossterm::{ Command, }; use helix_view::graphics::{Color, CursorKind, Modifier, Rect, UnderlineStyle}; +use once_cell::sync::OnceCell; use std::{ fmt, io::{self, Write}, @@ -57,6 +58,7 @@ impl Capabilities { pub struct CrosstermBackend<W: Write> { buffer: W, capabilities: Capabilities, + supports_keyboard_enhancement_protocol: OnceCell<bool>, } impl<W> CrosstermBackend<W> @@ -67,8 +69,16 @@ where CrosstermBackend { buffer, capabilities: Capabilities::from_env_or_default(), + supports_keyboard_enhancement_protocol: OnceCell::new(), } } + + #[inline] + fn supports_keyboard_enhancement_protocol(&self) -> io::Result<bool> { + self.supports_keyboard_enhancement_protocol + .get_or_try_init(terminal::supports_keyboard_enhancement) + .copied() + } } impl<W> Write for CrosstermBackend<W> @@ -100,7 +110,7 @@ where if config.enable_mouse_capture { execute!(self.buffer, EnableMouseCapture)?; } - if matches!(terminal::supports_keyboard_enhancement(), Ok(true)) { + if self.supports_keyboard_enhancement_protocol()? { log::debug!("The enhanced keyboard protocol is supported on this terminal"); execute!( self.buffer, @@ -121,7 +131,7 @@ where if config.enable_mouse_capture { execute!(self.buffer, DisableMouseCapture)?; } - if matches!(terminal::supports_keyboard_enhancement(), Ok(true)) { + if self.supports_keyboard_enhancement_protocol()? { execute!(self.buffer, PopKeyboardEnhancementFlags)?; } execute!( |