Add IME support for Windows

CHANGELOG.md

@@ -7,6 +7,10 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
 ## 0.8.0-dev
 
+### Added
+
+- IME composition preview not appearing on Windows
+
 ### Fixed
 
 - Crash due to assertion failure on 32-bit architectures

alacritty/src/window.rs

@@ -421,7 +421,6 @@ impl Window {
     }
 
     /// Adjust the IME editor position according to the new location of the cursor.
-    #[cfg(not(windows))]
     pub fn update_ime_position(&mut self, point: Point, size: &SizeInfo) {
         let nspot_x = f64::from(size.padding_x() + point.col.0 as f32 * size.cell_width());
         let nspot_y = f64::from(size.padding_y() + (point.line.0 + 1) as f32 * size.cell_height());
@@ -429,10 +428,6 @@ impl Window {
         self.window().set_ime_position(PhysicalPosition::new(nspot_x, nspot_y));
     }
 
-    /// No-op, since Windows does not support IME positioning.
-    #[cfg(windows)]
-    pub fn update_ime_position(&mut self, _point: Point, _size_info: &SizeInfo) {}
-
     pub fn swap_buffers(&self) {
         self.windowed_context.swap_buffers().expect("swap buffers");
     }