Fix control-character parsing in windows (#629)

src/event/sys/windows/parse.rs

@@ -97,6 +97,13 @@ fn parse_key_event_record(key_event: &KeyEventRecord) -> Option<KeyEvent> {
                     let c = character_raw as u8;
                     if c <= b'\x1F' {
                         character = (c | b'\x40') as char;
+                        // if we press something like ctrl-g, we will get `character` with value `G`.
+                        // in this case, convert the `character` to lowercase `g`.
+                        if character.is_ascii_uppercase()
+                            && !modifiers.contains(KeyModifiers::SHIFT)
+                        {
+                            character.make_ascii_lowercase();
+                        }
                     } else {
                         return None;
                     }

src/style/sys/windows.rs

@@ -28,10 +28,9 @@ pub(crate) fn set_foreground_color(fg_color: Color) -> Result<()> {
 
     // Notice that the color values are stored in wAttribute.
     // So we need to use bitwise operators to check if the values exists or to get current console colors.
-    let mut color: u16;
     let attrs = csbi.attributes();
     let bg_color = attrs & 0x0070;
-    color = color_value | bg_color;
+    let mut color = color_value | bg_color;
 
     // background intensity is a separate value in attrs,
     // wee need to check if this was applied to the current bg color.
@@ -53,10 +52,9 @@ pub(crate) fn set_background_color(bg_color: Color) -> Result<()> {
 
     // Notice that the color values are stored in wAttribute.
     // So wee need to use bitwise operators to check if the values exists or to get current console colors.
-    let mut color: u16;
     let attrs = csbi.attributes();
     let fg_color = attrs & 0x0007;
-    color = fg_color | color_value;
+    let mut color = fg_color | color_value;
 
     // Foreground intensity is a separate value in attrs,
     // So we need to check if this was applied to the current fg color.