beer

diff --git a/src/main.rs b/src/main.rsindex fbf5763..742b5ca 100644--- a/src/main.rs+++ b/src/main.rs@@ -62,5 +62,5 @@ fn run(cli: Cli) -> anyhow::Result<ExitCode> {      let config = Config::load(cli.config.as_deref());     tracing::info!("starting beer");-    wayland::run(config)+    wayland::run(config, cli.config) }diff --git a/src/wayland.rs b/src/wayland.rsindex ffdf8eb..71aed49 100644--- a/src/wayland.rs+++ b/src/wayland.rs@@ -170,7 +170,7 @@ const DEFAULT_W: u32 = 800; const DEFAULT_H: u32 = 600;  /// Run a single window until it is closed, returning the shell's exit code.-pub fn run(config: Config) -> anyhow::Result<ExitCode> {+pub fn run(config: Config, config_path: Option<std::path::PathBuf>) -> anyhow::Result<ExitCode> {     let conn = Connection::connect_to_env().context("connect to Wayland compositor")?;     let (globals, event_queue) =         registry_queue_init(&conn).context("initialize Wayland registry")?;@@ -254,6 +254,7 @@ pub fn run(config: Config) -> anyhow::Result<ExitCode> {         session: None,         title: None,         config,+        config_path,         bindings,         font_size,         fullscreen: false,@@ -286,6 +287,19 @@ pub fn run(config: Config) -> anyhow::Result<ExitCode> {         tracing::warn!("register blink timer: {err}");     } +    // SIGUSR1 reloads the config in place.+    match calloop::signals::Signals::new(&[calloop::signals::Signal::SIGUSR1]) {+        Ok(signals) => {+            let registered = event_loop+                .handle()+                .insert_source(signals, |_, _, app: &mut App| app.reload_config());+            if let Err(err) = registered {+                tracing::warn!("register signal source: {err}");+            }+        }+        Err(err) => tracing::warn!("install SIGUSR1 handler: {err}"),+    }+     // Each iteration blocks until an event (PTY output, input, configure, frame     // callback, blink) arrives, then presents at most one frame; bursts of PTY     // output between frame callbacks coalesce into a single repaint.@@ -380,6 +394,8 @@ struct App {     title: Option<String>,     /// The active user configuration.     config: Config,+    /// Path the config was loaded from, for SIGUSR1 live reload.+    config_path: Option<std::path::PathBuf>,     /// Resolved key/text bindings.     bindings: crate::bindings::Bindings,     /// Current font size in pixels (changed by font-resize bindings).@@ -575,6 +591,37 @@ impl App {         }     } +    /// Re-read the config file and apply it in place (SIGUSR1).+    fn reload_config(&mut self) {+        let new = Config::load(self.config_path.as_deref());+        self.bindings =+            crate::bindings::Bindings::from_config(&new.key_bindings, &new.text_bindings);+        self.renderer.set_padding(new.main.pad_x, new.main.pad_y);+        if new.main.font != self.config.main.font || new.main.font_size != self.font_size {+            match self.renderer.set_font(&new.main.font, new.main.font_size) {+                Ok(()) => self.font_size = new.main.font_size,+                Err(err) => tracing::warn!("reload font: {err:#}"),+            }+        }+        if let Some(session) = self.session.as_mut() {+            session+                .term+                .set_theme(crate::theme::Theme::from_config(&new.colors));+            let grid = session.term.grid_mut();+            grid.set_word_delimiters(new.main.word_delimiters.clone());+            grid.set_scrollback_cap(new.scrollback.lines);+            if let Some(shape) = cursor_shape_from(new.cursor.style.as_deref()) {+                grid.set_cursor_shape(shape);+            }+            grid.set_cursor_blink(new.cursor.blink);+        }+        self.config = new;+        self.frames.clear();+        self.resize_grid();+        self.needs_draw = true;+        tracing::info!("config reloaded");+    }+     /// Re-rasterize the font at `new_size`, then re-derive the grid geometry.     fn change_font_size(&mut self, new_size: u32) {         let new_size = new_size.clamp(6, 200);