fix: multibyte line trucation

src/utils/formatting/content_format.rs

@@ -4,6 +4,7 @@ use unicode_width::UnicodeWidthStr;
 
 use super::content_split::measure_text_width;
 use super::content_split::split_line;
+use super::content_split::split_long_word;
 
 use crate::cell::Cell;
 use crate::row::Row;
@@ -121,9 +122,11 @@ pub fn format_row(
                 let width: usize = info.content_width.into();
                 if width >= 6 {
                     // Truncate the line if '...' doesn't fit
-                    if last_line.width() >= width - 3 {
+                    if last_line.width() > width - 3 {
                         let surplus = (last_line.width() + 3) - width;
-                        last_line.truncate(last_line.width() - surplus);
+                        let split_result = split_long_word(last_line.width() - surplus, &last_line);
+                        last_line.clear();
+                        last_line.push_str(&split_result.0);
                     }
                     last_line.push_str("...");
                 }

tests/all/utf_8_characters.rs

@@ -56,3 +56,25 @@ fn multi_character_utf8_word_splitting() {
     println!("{expected}");
     assert_eq!(expected, "\n".to_string() + &table.to_string());
 }
+
+#[test]
+fn multi_character_utf8_line_truncation() {
+    let mut table = Table::new();
+    let mut row = Row::new();
+    let test_string = "😀😃😄😁";
+    let row = row.max_height(1).add_cell(Cell::new(test_string));
+    table
+        .set_content_arrangement(ContentArrangement::Dynamic)
+        .set_header(vec!["test"])
+        .add_row(row.clone())
+        .set_width(10); // column content (6) + padding + border
+
+    let expected = "
++--------+
+| test   |
++========+
+| 😀...  |
++--------+";
+    println!("{expected}");
+    assert_eq!(expected, "\n".to_string() + &table.to_string());
+}