Fix position of zero-width over double-width characters

CHANGELOG.md

@@ -23,6 +23,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - PTY size not getting updated when message bar is shown
 - Text Cursor disappearing
+- Incorrect positioning of zero-width characters over double-width characters
 
 ## Version 0.3.2
 

src/term/mod.rs

@@ -1414,10 +1414,10 @@ impl ansi::Handler for Term {
 
             // Handle zero-width characters
             if width == 0 {
-                let col = self.cursor.point.col.0.saturating_sub(1);
+                let mut col = self.cursor.point.col.0.saturating_sub(1);
                 let line = self.cursor.point.line;
                 if self.grid[line][Column(col)].flags.contains(cell::Flags::WIDE_CHAR_SPACER) {
-                    col.saturating_sub(1);
+                    col = col.saturating_sub(1);
                 }
                 self.grid[line][Column(col)].push_extra(c);
                 return;