feat: switch input source during prefix mode (#434)

On macOS, opt-in under [experimental], temporarily switch the host input
source to the current ASCII-capable layout while prefix mode is active so
prefix commands register even when a CJK IME is composing, then restore the
previous input source when prefix mode exits or is cancelled. No-op when the
current source is already ASCII-capable, on non-macOS platforms, or when any
input source call fails. Pane text input is unaffected.

Also pin next_resize_poll in next_loop_deadline_includes_selection_autoscroll_deadline
so the selection autoscroll deadline stays the earliest; the default resize
poll could otherwise beat it and flake the assertion.

refs #400

Co-authored-by: Can Celik <ogulcancelik@gmail.com>

1 files changed, 13 insertions, 0 deletions

diff --git a/src/app/config_io.rs b/src/app/config_io.rs
index fa2765e9..804a26f6 100644
--- a/src/app/config_io.rs
+++ b/src/app/config_io.rs
@@ -94,6 +94,19 @@ impl App {
         }
     }
 
+    pub(super) fn save_switch_ascii_input_source_in_prefix(&mut self, enabled: bool) {
+        if self.update_config_file("prefix ascii input source", |content| {
+            crate::config::upsert_section_bool(
+                content,
+                "experimental",
+                "switch_ascii_input_source_in_prefix",
+                enabled,
+            )
+        }) {
+            self.apply_config_from_disk(false);
+        }
+    }
+
     pub(super) fn save_agent_panel_scope(&mut self, scope: crate::app::state::AgentPanelScope) {
         let value = match scope {
             crate::app::state::AgentPanelScope::CurrentWorkspace => {