Theme · Importing: a long name gives way, four-digit colors read

A read theme's name is an Ellipsis that gives way beside its mode badge,
so a long name keeps the badge inside a 280px box. parse_hex reads #rgba
as VS Code does, each digit doubled, so a theme with a four-digit color
reads. Tests hold the badge inside the box and read #0008 as black at
0x88 alpha.

src/settings/vscode.rs

@@ -271,7 +271,7 @@ pub fn read_vscode_theme(text: &str) -> Result<VsCodeTheme> {
 
 #[cfg(test)]
 mod tests {
-    use gpui::rgb;
+    use gpui::{rgb, rgba};
 
     use super::{plain, read_vscode_theme};
     use crate::theme::{Mode, Palette};
@@ -311,6 +311,14 @@ mod tests {
         assert_eq!(mode("hc-light"), Mode::Light);
     }
 
+    #[test]
+    fn a_four_digit_color_reads_with_its_alpha() {
+        let theme =
+            read_vscode_theme(r##"{"type": "dark", "colors": {"widget.shadow": "#0008"}}"##)
+                .expect("a theme");
+        assert_eq!(theme.colors.shadow, rgba(0x00000088).into());
+    }
+
     #[test]
     fn a_terminal_color_reads_into_its_place() {
         let theme =