more line wrapping bugs

6 files changed, 25 insertions, 1 deletions

diff --git a/CHANGELOG.md b/CHANGELOG.md
index dc9a22a..0a0b2c6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,7 @@
   the line
 * Fixed `Screen::cursor_state_formatted` to draw the last character in a line
   with the appropriate drawing attributes if it needs to redraw it
+* Maintain wrapped state when overwriting a wide character at the end of a line
 
 ## [0.13.0] - 2021-11-17
 
diff --git a/src/screen.rs b/src/screen.rs
index 57d1d1c..0c08881 100644
--- a/src/screen.rs
+++ b/src/screen.rs
@@ -915,7 +915,7 @@ impl Screen {
                         col: drawing_pos.col + 1,
                     })
                     .unwrap();
-                next_cell.clear(attrs);
+                next_cell.set(' ', attrs);
             }
 
             let cell = self.current_cell_mut();
diff --git a/tests/data/fixtures/wrap.in b/tests/data/fixtures/wrap.in
index 1c85cb2..491034d 100644
--- a/tests/data/fixtures/wrap.in
+++ b/tests/data/fixtures/wrap.in
@@ -27,3 +27,4 @@ a
 \x1b[H\x1b[@
 \x1bc\x1b[1;80Haa\x1b[T\x1b[@
 \x1bc\na\x1b[1;79Hデ\n
+\x1bc\x1b[1;79Hネa\x1b[1;79Hb
diff --git a/tests/data/fixtures/wrap/23.json b/tests/data/fixtures/wrap/23.json
index 681554c..ef04d51 100644
--- a/tests/data/fixtures/wrap/23.json
+++ b/tests/data/fixtures/wrap/23.json
@@ -10,6 +10,9 @@
     "1,0": {
       "contents": "d"
     },
+    "1,1": {
+      "contents": " "
+    },
     "1,2": {
       "contents": "a"
     }
diff --git a/tests/data/fixtures/wrap/30.json b/tests/data/fixtures/wrap/30.json
new file mode 100644
index 0000000..44351c6
--- /dev/null
+++ b/tests/data/fixtures/wrap/30.json
@@ -0,0 +1,18 @@
+{
+  "contents": "                                                                              b a",
+  "cells": {
+    "0,78": {
+      "contents": "b"
+    },
+    "0,79": {
+      "contents": " "
+    },
+    "1,0": {
+      "contents": "a"
+    }
+  },
+  "cursor_position": [
+    0,
+    79
+  ]
+}
\ No newline at end of file
diff --git a/tests/data/fixtures/wrap/30.typescript b/tests/data/fixtures/wrap/30.typescript
new file mode 100644
index 0000000..73ac4d4
--- /dev/null
+++ b/tests/data/fixtures/wrap/30.typescript
@@ -0,0 +1 @@
+cネab
\ No newline at end of file