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Use terminfo to reset terminal cursor style #8591

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merged 1 commit into from
Oct 26, 2023
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Use terminfo to reset terminal cursor style #8591

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20 changes: 18 additions & 2 deletions helix-tui/src/backend/crossterm.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -32,10 +32,21 @@ fn vte_version() -> Option<usize> {
}

/// Describes terminal capabilities like extended underline, truecolor, etc.
#[derive(Copy, Clone, Debug, Default)]
#[derive(Clone, Debug)]
struct Capabilities {
/// Support for undercurled, underdashed, etc.
has_extended_underlines: bool,
/// Support for resetting the cursor style back to normal.
reset_cursor_command: String,
}

impl Default for Capabilities {
fn default() -> Self {
Self {
has_extended_underlines: false,
reset_cursor_command: "\x1B[0 q".to_string(),
}
}
}

impl Capabilities {
Expand All @@ -54,6 +65,10 @@ impl Capabilities {
|| t.extended_cap("Su").is_some()
|| vte_version() >= Some(5102)
|| matches!(term_program().as_deref(), Some("WezTerm")),
reset_cursor_command: t
.utf8_string_cap(termini::StringCapability::CursorNormal)
.unwrap_or("\x1B[0 q")
.to_string(),
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On unic thus seems fine but does this work on windows?

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@rmehri01 rmehri01 Oct 26, 2023 •
edited
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Ah good catch, I just tried it out and it doesn't work on windows since the reset command will be set to an empty string instead.

},
}
}
Expand Down Expand Up @@ -154,7 +169,8 @@ where

fn restore(&mut self, config: Config) -> io::Result<()> {
// reset cursor shape
write!(self.buffer, "\x1B[0 q")?;
self.buffer
.write_all(self.capabilities.reset_cursor_command.as_bytes())?;
if config.enable_mouse_capture {
execute!(self.buffer, DisableMouseCapture)?;
}
Expand Down
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