Merge branch 'main' into wasm-status-bar

7 files changed, 1271 insertions, 1215 deletions

diff --git a/src/panes/grid.rs b/src/panes/grid.rs
new file mode 100644
index 00000000..27dd462c
--- /dev/null
+++ b/src/panes/grid.rs
@@ -0,0 +1,795 @@
+use std::fmt::{self, Debug, Formatter};
+
+use crate::panes::terminal_character::{
+    CharacterStyles, TerminalCharacter, EMPTY_TERMINAL_CHARACTER,
+};
+
+fn get_top_non_canonical_rows(rows: &mut Vec<Row>) -> Vec<Row> {
+    let mut index_of_last_non_canonical_row = None;
+    for (i, row) in rows.iter().enumerate() {
+        if row.is_canonical {
+            break;
+        } else {
+            index_of_last_non_canonical_row = Some(i);
+        }
+    }
+    match index_of_last_non_canonical_row {
+        Some(index_of_last_non_canonical_row) => {
+            rows.drain(..=index_of_last_non_canonical_row).collect()
+        }
+        None => vec![],
+    }
+}
+
+fn get_bottom_canonical_row_and_wraps(rows: &mut Vec<Row>) -> Vec<Row> {
+    let mut index_of_last_non_canonical_row = None;
+    for (i, row) in rows.iter().enumerate().rev() {
+        if row.is_canonical {
+            index_of_last_non_canonical_row = Some(i);
+            break;
+        } else {
+            index_of_last_non_canonical_row = Some(i);
+        }
+    }
+    match index_of_last_non_canonical_row {
+        Some(index_of_last_non_canonical_row) => {
+            rows.drain(index_of_last_non_canonical_row..).collect()
+        }
+        None => vec![],
+    }
+}
+
+fn transfer_rows_down(
+    source: &mut Vec<Row>,
+    destination: &mut Vec<Row>,
+    count: usize,
+    max_src_width: Option<usize>,
+    max_dst_width: Option<usize>,
+) {
+    let mut next_lines: Vec<Row> = vec![];
+    let mut lines_added_to_destination: isize = 0;
+    loop {
+        if lines_added_to_destination as usize == count {
+            break;
+        }
+        if next_lines.is_empty() {
+            match source.pop() {
+                Some(next_line) => {
+                    let mut top_non_canonical_rows_in_dst = get_top_non_canonical_rows(destination);
+                    lines_added_to_destination -= top_non_canonical_rows_in_dst.len() as isize;
+                    next_lines.push(next_line);
+                    next_lines.append(&mut top_non_canonical_rows_in_dst);
+                    next_lines = match max_dst_width {
+                        Some(max_row_width) => {
+                            Row::from_rows(next_lines).split_to_rows_of_length(max_row_width)
+                        }
+                        None => vec![Row::from_rows(next_lines)],
+                    };
+                }
+                None => break, // no more rows
+            }
+        }
+        destination.insert(0, next_lines.pop().unwrap());
+        lines_added_to_destination += 1;
+    }
+    if !next_lines.is_empty() {
+        match max_src_width {
+            Some(max_row_width) => {
+                let mut excess_rows =
+                    Row::from_rows(next_lines).split_to_rows_of_length(max_row_width);
+                source.append(&mut excess_rows);
+            }
+            None => {
+                let excess_row = Row::from_rows(next_lines);
+                source.push(excess_row);
+            }
+        }
+    }
+}
+
+fn transfer_rows_up(
+    source: &mut Vec<Row>,
+    destination: &mut Vec<Row>,
+    count: usize,
+    max_src_width: Option<usize>,
+    max_dst_width: Option<usize>,
+) {
+    let mut next_lines: Vec<Row> = vec![];
+    for _ in 0..count {
+        if next_lines.is_empty() {
+            if source.len() > 0 {
+                let next_line = source.remove(0);
+                if !next_line.is_canonical {
+                    let mut bottom_canonical_row_and_wraps_in_dst =
+                        get_bottom_canonical_row_and_wraps(destination);
+                    next_lines.append(&mut bottom_canonical_row_and_wraps_in_dst);
+                }
+                next_lines.push(next_line);
+                next_lines = match max_dst_width {
+                    Some(max_row_width) => {
+                        Row::from_rows(next_lines).split_to_rows_of_length(max_row_width)
+                    }
+                    None => vec![Row::from_rows(next_lines)],
+                };
+            } else {
+                break; // no more rows
+            }
+        }
+        destination.push(next_lines.remove(0));
+    }
+    if !next_lines.is_empty() {
+        match max_src_width {
+            Some(max_row_width) => {
+                let excess_rows = Row::from_rows(next_lines).split_to_rows_of_length(max_row_width);
+                for row in excess_rows {
+                    source.insert(0, row);
+                }
+            }
+            None => {
+                let excess_row = Row::from_rows(next_lines);
+                source.insert(0, excess_row);
+            }
+        }
+    }
+}
+
+#[derive(Clone)]
+pub struct Grid {
+    lines_above: Vec<Row>,
+    viewport: Vec<Row>,
+    lines_below: Vec<Row>,
+    cursor: Cursor,
+    scroll_region: Option<(usize, usize)>,
+    width: usize,
+    height: usize,
+}
+
+impl Debug for Grid {
+    fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
+        for (i, row) in self.viewport.iter().enumerate() {
+            if row.is_canonical {
+                writeln!(f, "{:?} (C): {:?}", i, row)?;
+            } else {
+                writeln!(f, "{:?} (W): {:?}", i, row)?;
+            }
+        }
+        Ok(())
+    }
+}
+
+impl Grid {
+    pub fn new(rows: usize, columns: usize) -> Self {
+        Grid {
+            lines_above: vec![],
+            viewport: vec![],
+            lines_below: vec![],
+            cursor: Cursor::new(0, 0),
+            scroll_region: None,
+            width: columns,
+            height: rows,
+        }
+    }
+    fn cursor_canonical_line_index(&self) -> usize {
+        let mut cursor_canonical_line_index = 0;
+        let mut canonical_lines_traversed = 0;
+        for (i, line) in self.viewport.iter().enumerate() {
+            if line.is_canonical {
+                cursor_canonical_line_index = canonical_lines_traversed;
+                canonical_lines_traversed += 1;
+            }
+            if i == self.cursor.y {
+                break;
+            }
+        }
+        cursor_canonical_line_index
+    }
+    // TODO: merge these two funtions
+    fn cursor_index_in_canonical_line(&self) -> usize {
+        let mut cursor_canonical_line_index = 0;
+        let mut cursor_index_in_canonical_line = 0;
+        for (i, line) in self.viewport.iter().enumerate() {
+            if line.is_canonical {
+                cursor_canonical_line_index = i;
+            }
+            if i == self.cursor.y {
+                let line_wrap_position_in_line = self.cursor.y - cursor_canonical_line_index;
+                cursor_index_in_canonical_line = line_wrap_position_in_line + self.cursor.x;
+                break;
+            }
+        }
+        cursor_index_in_canonical_line
+    }
+    fn canonical_line_y_coordinates(&self, canonical_line_index: usize) -> usize {
+        let mut canonical_lines_traversed = 0;
+        let mut y_coordinates = 0;
+        for (i, line) in self.viewport.iter().enumerate() {
+            if line.is_canonical {
+                canonical_lines_traversed += 1;
+                if canonical_lines_traversed == canonical_line_index + 1 {
+                    y_coordinates = i;
+                    break;
+                }
+            }
+        }
+        y_coordinates
+    }
+    pub fn scroll_up_one_line(&mut self) {
+        if self.lines_above.len() > 0 && self.viewport.len() == self.height {
+            let line_to_push_down = self.viewport.pop().unwrap();
+            self.lines_below.insert(0, line_to_push_down);
+            let line_to_insert_at_viewport_top = self.lines_above.pop().unwrap();
+            self.viewport.insert(0, line_to_insert_at_viewport_top);
+        }
+    }
+    pub fn scroll_down_one_line(&mut self) {
+        if self.lines_below.len() > 0 && self.viewport.len() == self.height {
+            let mut line_to_push_up = self.viewport.remove(0);
+            if line_to_push_up.is_canonical {
+                self.lines_above.push(line_to_push_up);
+            } else {
+                let mut last_line_above = self.lines_above.pop().unwrap();
+                last_line_above.append(&mut line_to_push_up.columns);
+                self.lines_above.push(last_line_above);
+            }
+            let line_to_insert_at_viewport_bottom = self.lines_below.remove(0);
+            self.viewport.push(line_to_insert_at_viewport_bottom);
+        }
+    }
+    pub fn change_size(&mut self, new_rows: usize, new_columns: usize) {
+        if new_columns != self.width {
+            let mut cursor_canonical_line_index = self.cursor_canonical_line_index();
+            let cursor_index_in_canonical_line = self.cursor_index_in_canonical_line();
+            let mut viewport_canonical_lines = vec![];
+            for mut row in self.viewport.drain(..) {
+                if !row.is_canonical
+                    && viewport_canonical_lines.is_empty()
+                    && self.lines_above.len() > 0
+                {
+                    let mut first_line_above = self.lines_above.pop().unwrap();
+                    first_line_above.append(&mut row.columns);
+                    viewport_canonical_lines.push(first_line_above);
+                    cursor_canonical_line_index += 1;
+                } else if row.is_canonical {
+                    viewport_canonical_lines.push(row);
+                } else {
+                    match viewport_canonical_lines.last_mut() {
+                        Some(last_line) => {
+                            last_line.append(&mut row.columns);
+                        }
+                        None => {
+                            // the state is corrupted somehow
+                            // this is a bug and I'm not yet sure why it happens
+                            // usually it fixes itself and is a result of some race
+                            // TODO: investigate why this happens and solve it
+                            return;
+                        }
+                    }
+                }
+            }
+            let mut new_viewport_rows = vec![];
+            for mut canonical_line in viewport_canonical_lines {
+                let mut canonical_line_parts: Vec<Row> = vec![];
+                while canonical_line.columns.len() > 0 {
+                    let next_wrap = if canonical_line.len() > new_columns {
+                        canonical_line.columns.drain(..new_columns)
+                    } else {
+                        canonical_line.columns.drain(..)
+                    };
+                    let row = Row::from_columns(next_wrap.collect());
+                    // if there are no more parts, this row is canonical as long as it originall
+                    // was canonical (it might not have been for example if it's the first row in
+                    // the viewport, and the actual canonical row is above it in the scrollback)
+                    let row = if canonical_line_parts.len() == 0 && canonical_line.is_canonical {
+                        row.canonical()
+                    } else {
+                        row
+                    };
+                    canonical_line_parts.push(row);
+                }
+                new_viewport_rows.append(&mut canonical_line_parts);
+            }
+            self.viewport = new_viewport_rows;
+
+            let mut new_cursor_y = self.canonical_line_y_coordinates(cursor_canonical_line_index);
+            let new_cursor_x = (cursor_index_in_canonical_line / new_columns)
+                + (cursor_index_in_canonical_line % new_columns);
+            let current_viewport_row_count = self.viewport.len();
+            if current_viewport_row_count < self.height {
+                let row_count_to_transfer = self.height - current_viewport_row_count;
+                transfer_rows_down(
+                    &mut self.lines_above,
+                    &mut self.viewport,
+                    row_count_to_transfer,
+                    None,
+                    Some(new_columns),
+                );
+                let rows_pulled = self.viewport.len() - current_viewport_row_count;
+                new_cursor_y += rows_pulled;
+            } else if current_viewport_row_count > self.height {
+                let row_count_to_transfer = current_viewport_row_count - self.height;
+                if row_count_to_transfer > new_cursor_y {
+                    new_cursor_y = 0;
+                } else {
+                    new_cursor_y -= row_count_to_transfer;
+                }
+                transfer_rows_up(
+                    &mut self.viewport,
+                    &mut self.lines_above,
+                    row_count_to_transfer,
+                    Some(new_columns),
+                    None,
+                );
+            }
+            self.cursor.y = new_cursor_y;
+            self.cursor.x = new_cursor_x;
+        }
+        if new_rows != self.height {
+            let current_viewport_row_count = self.viewport.len();
+            if current_viewport_row_count < new_rows {
+                let row_count_to_transfer = new_rows - current_viewport_row_count;
+                transfer_rows_down(
+                    &mut self.lines_above,
+                    &mut self.viewport,
+                    row_count_to_transfer,
+                    None,
+                    Some(new_columns),
+                );
+                let rows_pulled = self.viewport.len() - current_viewport_row_count;
+                self.cursor.y += rows_pulled;
+            } else if current_viewport_row_count > new_rows {
+                let row_count_to_transfer = current_viewport_row_count - new_rows;
+                if row_count_to_transfer > self.cursor.y {
+                    self.cursor.y = 0;
+                } else {
+                    self.cursor.y -= row_count_to_transfer;
+                }
+                transfer_rows_up(
+                    &mut self.viewport,
+                    &mut self.lines_above,
+                    row_count_to_transfer,
+                    Some(new_columns),
+                    None,
+                );
+            }
+        }
+        self.height = new_rows;
+        self.width = new_columns;
+        if self.scroll_region.is_some() {
+            self.set_scroll_region_to_viewport_size();
+        }
+    }
+    pub fn as_character_lines(&self) -> Vec<Vec<TerminalCharacter>> {
+        let mut lines: Vec<Vec<TerminalCharacter>> = self
+            .viewport
+            .iter()
+            .map(|r| {
+                let mut line: Vec<TerminalCharacter> = r.columns.iter().copied().collect();
+                for _ in line.len()..self.width {
+                    // pad line
+                    line.push(EMPTY_TERMINAL_CHARACTER);
+                }
+                line
+            })
+            .collect();
+        let empty_row = vec![EMPTY_TERMINAL_CHARACTER; self.width];
+        for _ in lines.len()..self.height {
+            lines.push(empty_row.clone());
+        }
+        lines
+    }
+    pub fn cursor_coordinates(&self) -> Option<(usize, usize)> {
+        if self.cursor.is_hidden {
+            None
+        } else {
+            Some((self.cursor.x, self.cursor.y))
+        }
+    }
+    pub fn move_viewport_up(&mut self, count: usize) {
+        for _ in 0..count {
+            self.scroll_up_one_line();
+        }
+    }
+    pub fn move_viewport_down(&mut self, count: usize) {
+        for _ in 0..count {
+            self.scroll_down_one_line();
+        }
+    }
+    pub fn reset_viewport(&mut self) {
+        let row_count_below = self.lines_below.len();
+        for _ in 0..row_count_below {
+            self.scroll_down_one_line();
+        }
+    }
+    pub fn rotate_scroll_region_up(&mut self, _count: usize) {
+        // TBD
+    }
+    pub fn rotate_scroll_region_down(&mut self, _count: usize) {
+        // TBD
+    }
+    pub fn add_canonical_line(&mut self) {
+        if let Some((scroll_region_top, scroll_region_bottom)) = self.scroll_region {
+            if self.cursor.y == scroll_region_bottom {
+                // end of scroll region
+                // when we have a scroll region set and we're at its bottom
+                // we need to delete its first line, thus shifting all lines in it upwards
+                // then we add an empty line at its end which will be filled by the application
+                // controlling the scroll region (presumably filled by whatever comes next in the
+                // scroll buffer, but that's not something we control)
+                self.viewport.remove(scroll_region_top);
+                self.viewport
+                    .insert(scroll_region_bottom, Row::new().canonical());
+                return;
+            }
+        }
+        if self.viewport.len() <= self.cursor.y + 1 {
+            let new_row = Row::new().canonical();
+            self.viewport.push(new_row);
+        }
+        if self.cursor.y == self.height - 1 {
+            let row_count_to_transfer = 1;
+            transfer_rows_up(
+                &mut self.viewport,
+                &mut self.lines_above,
+                row_count_to_transfer,
+                Some(self.width),
+                None,
+            );
+        } else {
+            self.cursor.y += 1;
+        }
+    }
+    pub fn move_cursor_to_beginning_of_line(&mut self) {
+        self.cursor.x = 0;
+    }
+    pub fn move_cursor_backwards(&mut self, count: usize) {
+        if self.cursor.x > count {
+            self.cursor.x -= count;
+        } else {
+            self.cursor.x = 0;
+        }
+    }
+    pub fn insert_character_at_cursor_position(&mut self, terminal_character: TerminalCharacter) {
+        match self.viewport.get_mut(self.cursor.y) {
+            Some(row) => row.add_character_at(terminal_character, self.cursor.x),
+            None => {
+                // pad lines until cursor if they do not exist
+                for _ in self.viewport.len()..self.cursor.y {
+                    self.viewport.push(Row::new().canonical());
+                }
+                self.viewport
+                    .push(Row::new().with_character(terminal_character).canonical());
+            }
+        }
+    }
+    pub fn add_character(&mut self, terminal_character: TerminalCharacter) {
+        // TODO: try to separate adding characters from moving the cursors in this function
+        if self.cursor.x < self.width {
+            self.insert_character_at_cursor_position(terminal_character);
+        } else {
+            // line wrap
+            self.cursor.x = 0;
+            if self.cursor.y == self.height - 1 {
+                let row_count_to_transfer = 1;
+                transfer_rows_up(
+                    &mut self.viewport,
+                    &mut self.lines_above,
+                    row_count_to_transfer,
+                    Some(self.width),
+                    None,
+                );
+                let wrapped_row = Row::new();
+                self.viewport.push(wrapped_row);
+            } else {
+                self.cursor.y += 1;
+                if self.viewport.len() <= self.cursor.y {
+                    let line_wrapped_row = Row::new();
+                    self.viewport.push(line_wrapped_row);
+                }
+            }
+            self.insert_character_at_cursor_position(terminal_character);
+        }
+        self.move_cursor_forward_until_edge(1);
+    }
+    pub fn move_cursor_forward_until_edge(&mut self, count: usize) {
+        let count_to_move = std::cmp::min(count, self.width - (self.cursor.x));
+        self.cursor.x += count_to_move;
+    }
+    pub fn replace_characters_in_line_after_cursor(&mut self, replace_with: TerminalCharacter) {
+        self.viewport
+            .get_mut(self.cursor.y)
+            .unwrap()
+            .truncate(self.cursor.x);
+        if self.cursor.x < self.width - 1 {
+            let mut characters_to_append = vec![replace_with; self.width - self.cursor.x];
+            self.viewport
+                .get_mut(self.cursor.y)
+                .unwrap()
+                .append(&mut characters_to_append);
+        }
+    }
+    pub fn replace_characters_in_line_before_cursor(&mut self, replace_with: TerminalCharacter) {
+        let line_part = vec![replace_with; self.cursor.x];
+        let row = self.viewport.get_mut(self.cursor.y).unwrap();
+        row.replace_beginning_with(line_part);
+    }
+    pub fn clear_all_after_cursor(&mut self) {
+        self.viewport
+            .get_mut(self.cursor.y)
+            .unwrap()
+            .truncate(self.cursor.x);
+        self.viewport.truncate(self.cursor.y + 1);
+    }
+    pub fn clear_cursor_line(&mut self) {
+        self.viewport.get_mut(self.cursor.y).unwrap().truncate(0);
+    }
+    pub fn clear_all(&mut self) {
+        self.viewport.clear();
+        self.viewport.push(Row::new().canonical());
+    }
+    fn pad_current_line_until(&mut self, position: usize) {
+        let current_row = self.viewport.get_mut(self.cursor.y).unwrap();
+        for _ in current_row.len()..position {
+            current_row.push(EMPTY_TERMINAL_CHARACTER);
+        }
+    }
+    fn pad_lines_until(&mut self, position: usize) {
+        for _ in self.viewport.len()..position {
+            self.viewport.push(Row::new().canonical());
+        }
+    }
+    pub fn move_cursor_to(&mut self, x: usize, y: usize) {
+        self.cursor.x = x;
+        self.cursor.y = y;
+        self.pad_lines_until(self.cursor.y + 1);
+        self.pad_current_line_until(self.cursor.x);
+    }
+    pub fn move_cursor_up(&mut self, count: usize) {
+        self.cursor.y = if self.cursor.y < count {
+            0
+        } else {
+            self.cursor.y - count
+        };
+    }
+    pub fn move_cursor_up_with_scrolling(&mut self, count: usize) {
+        let (scroll_region_top, scroll_region_bottom) =
+            self.scroll_region.unwrap_or((0, self.height - 1));
+        for _ in 0..count {
+            let current_line_index = self.cursor.y;
+            if current_line_index == scroll_region_top {
+                // if we're at the top line, we create a new line and remove the last line that
+                // would otherwise overflow
+                self.viewport.remove(scroll_region_bottom);
+                self.viewport.insert(current_line_index, Row::new()); // TODO: .canonical() ?
+            } else if current_line_index > scroll_region_top
+                && current_line_index <= scroll_region_bottom
+            {
+                self.move_cursor_up(count);
+            }
+        }
+    }
+    pub fn move_cursor_down(&mut self, count: usize) {
+        let lines_to_add = if self.cursor.y + count > self.height - 1 {
+            (self.cursor.y + count) - (self.height - 1)
+        } else {
+            0
+        };
+        self.cursor.y = if self.cursor.y + count > self.height - 1 {
+            self.height - 1
+        } else {
+            self.cursor.y + count
+        };
+        for _ in 0..lines_to_add {
+            self.add_canonical_line();
+        }
+        self.pad_lines_until(self.cursor.y);
+    }
+    pub fn move_cursor_back(&mut self, count: usize) {
+        if self.cursor.x < count {
+            self.cursor.x = 0;
+        } else {
+            self.cursor.x -= count;
+        }
+    }
+    pub fn hide_cursor(&mut self) {
+        self.cursor.is_hidden = true;
+    }
+    pub fn show_cursor(&mut self) {
+        self.cursor.is_hidden = false;
+    }
+    pub fn set_scroll_region(&mut self, top_line_index: usize, bottom_line_index: usize) {
+        self.scroll_region = Some((top_line_index, bottom_line_index));
+    }
+    pub fn clear_scroll_region(&mut self) {
+        self.scroll_region = None;
+    }
+    pub fn set_scroll_region_to_viewport_size(&mut self) {
+        self.scroll_region = Some((0, self.height - 1));
+    }
+    pub fn delete_lines_in_scroll_region(&mut self, count: usize) {
+        if let Some((scroll_region_top, scroll_region_bottom)) = self.scroll_region {
+            let current_line_index = self.cursor.y;
+            if current_line_index >= scroll_region_top && current_line_index <= scroll_region_bottom
+            {
+                // when deleting lines inside the scroll region, we must make sure it stays the
+                // same size (and that other lines below it aren't shifted inside it)
+                // so we delete the current line(s) and add an empty line at the end of the scroll
+                // region
+                for _ in 0..count {
+                    self.viewport.remove(current_line_index);
+                    self.viewport.insert(scroll_region_bottom, Row::new());
+                }
+            }
+        }
+    }
+    pub fn add_empty_lines_in_scroll_region(&mut self, count: usize) {
+        if let Some((scroll_region_top, scroll_region_bottom)) = self.scroll_region {
+            let current_line_index = self.cursor.y;
+            if current_line_index >= scroll_region_top && current_line_index <= scroll_region_bottom
+            {
+                // when adding empty lines inside the scroll region, we must make sure it stays the
+                // same size and that lines don't "leak" outside of it
+                // so we add an empty line where the cursor currently is, and delete the last line
+                // of the scroll region
+                for _ in 0..count {
+                    self.viewport.remove(scroll_region_bottom);
+                    self.viewport.insert(current_line_index, Row::new());
+                }
+            }
+        }
+    }
+    pub fn move_cursor_to_column(&mut self, column: usize) {
+        self.cursor.x = column;
+        self.pad_current_line_until(self.cursor.x);
+    }
+    pub fn move_cursor_to_line(&mut self, line: usize) {
+        self.cursor.y = line;
+        self.pad_lines_until(self.cursor.y + 1);
+        self.pad_current_line_until(self.cursor.x);
+    }
+    pub fn replace_with_empty_chars(&mut self, count: usize, empty_char_style: CharacterStyles) {
+        let mut empty_character = EMPTY_TERMINAL_CHARACTER;
+        empty_character.styles = empty_char_style;
+        let pad_until = std::cmp::min(self.width, self.cursor.x + count);
+        self.pad_current_line_until(pad_until);
+        let current_row = self.viewport.get_mut(self.cursor.y).unwrap();
+        for i in 0..count {
+            current_row.replace_character_at(empty_character, self.cursor.x + i);
+        }
+    }
+    pub fn erase_characters(&mut self, count: usize, empty_char_style: CharacterStyles) {
+        let mut empty_character = EMPTY_TERMINAL_CHARACTER;
+        empty_character.styles = empty_char_style;
+        let current_row = self.viewport.get_mut(self.cursor.y).unwrap();
+        for _ in 0..count {
+            current_row.delete_character(self.cursor.x);
+        }
+        let mut empty_space_to_append = vec![empty_character; count];
+        self.viewport
+            .get_mut(self.cursor.y)
+            .unwrap()
+            .append(&mut empty_space_to_append);
+    }
+}
+
+#[derive(Clone)]
+pub struct Row {
+    pub columns: Vec<TerminalCharacter>,
+    pub is_canonical: bool,
+}
+
+impl Debug for Row {
+    fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
+        for character in &self.columns {
+            write!(f, "{:?}", character)?;
+        }
+        Ok(())
+    }
+}
+
+impl Row {
+    pub fn new() -> Self {
+        Row {
+            columns: vec![],
+            is_canonical: false,
+        }
+    }
+    pub fn from_columns(columns: Vec<TerminalCharacter>) -> Self {
+        Row {
+            columns,
+            is_canonical: false,
+        }
+    }
+    pub fn from_rows(mut rows: Vec<Row>) -> Self {
+        if rows.is_empty() {
+            Row::new()
+        } else {
+            let mut first_row = rows.remove(0);
+            for row in rows.iter_mut() {
+                first_row.append(&mut row.columns);
+            }
+            first_row
+        }
+    }
+    pub fn with_character(mut self, terminal_character: TerminalCharacter) -> Self {
+        self.columns.push(terminal_character);
+        self
+    }
+    pub fn canonical(mut self) -> Self {
+        self.is_canonical = true;
+        self
+    }
+    pub fn add_character_at(&mut self, terminal_character: TerminalCharacter, x: usize) {
+        if x == self.columns.len() {
+            self.columns.push(terminal_character);
+        } else if x > self.columns.len() {
+            for _ in self.columns.len()..x {
+                self.columns.push(EMPTY_TERMINAL_CHARACTER);
+            }
+            self.columns.push(terminal_character);
+        } else {
+            // this is much more performant than remove/insert
+            self.columns.push(terminal_character);
+            self.columns.swap_remove(x);
+        }
+    }
+    pub fn replace_character_at(&mut self, terminal_character: TerminalCharacter, x: usize) {
+        // this is much more performant than remove/insert
+        self.columns.push(terminal_character);
+        self.columns.swap_remove(x);
+    }
+    pub fn push(&mut self, terminal_character: TerminalCharacter) {
+        self.columns.push(terminal_character);
+    }
+    pub fn truncate(&mut self, x: usize) {
+        self.columns.truncate(x);
+    }
+    pub fn append(&mut self, to_append: &mut Vec<TerminalCharacter>) {
+        self.columns.append(to_append);
+    }
+    pub fn replace_beginning_with(&mut self, mut line_part: Vec<TerminalCharacter>) {
+        drop(self.columns.drain(0..line_part.len()));
+        line_part.append(&mut self.columns);
+        self.columns = line_part;
+    }
+    pub fn len(&self) -> usize {
+        self.columns.len()
+    }
+    pub fn delete_character(&mut self, x: usize) {
+        self.columns.remove(x);
+    }
+    pub fn split_to_rows_of_length(&mut self, max_row_length: usize) -> Vec<Row> {
+        let mut parts: Vec<Row> = vec![];
+        let mut current_part: Vec<TerminalCharacter> = vec![];
+        for character in self.columns.drain(..) {
+            if current_part.len() == max_row_length {
+                parts.push(Row::from_columns(current_part));
+                current_part = vec![];
+            }
+            current_part.push(character);
+        }
+        if current_part.len() > 0 {
+            parts.push(Row::from_columns(current_part))
+        };
+        if parts.len() > 0 && self.is_canonical {
+            parts.get_mut(0).unwrap().is_canonical = true;
+        }
+        parts
+    }
+}
+
+#[derive(Clone, Debug)]
+pub struct Cursor {
+    x: usize,
+    y: usize,
+    is_hidden: bool,
+}
+
+impl Cursor {
+    pub fn new(x: usize, y: usize) -> Self {
+        Cursor {
+            x,
+            y,
+            is_hidden: false,
+        }
+    }
+}
diff --git a/src/panes/mod.rs b/src/panes/mod.rs
index 7d478886..4e7d6e80 100644
--- a/src/panes/mod.rs
+++ b/src/panes/mod.rs
@@ -1,9 +1,9 @@
+mod grid;
 mod plugin_pane;
-mod scroll;
 mod terminal_character;
 mod terminal_pane;
 
+pub use grid::*;
 pub use plugin_pane::*;
-pub use scroll::*;
 pub use terminal_character::*;
 pub use terminal_pane::*;
diff --git a/src/panes/scroll.rs b/src/panes/scroll.rs
deleted file mode 100644
index 98d1b6f4..00000000
--- a/src/panes/scroll.rs
+++ /dev/null
@@ -1,838 +0,0 @@
-use std::collections::VecDeque;
-use std::{
-    cmp::max,
-    fmt::{self, Debug, Formatter},
-};
-
-use crate::panes::terminal_character::{
-    CharacterStyles, TerminalCharacter, EMPTY_TERMINAL_CHARACTER,
-};
-
-/*
- * Scroll
- *
- * holds the terminal buffer and controls the viewport (which part of it we see)
- * its functions include line-wrapping and tracking the location of the cursor
- *
- */
-
-/*
- * CanonicalLine vs. WrappedFragment
- *
- * If the terminal had infinite width and we did not need to line wrap, the CanonicalLine would
- * be our only unit of line separation.
- * Each CanonicalLine has one or more WrappedFragments, which are re-calculated when the terminal is
- * resized, or when characters are added to the line
- *
- */
-
-#[derive(Clone)]
-pub struct CanonicalLine {
-    pub wrapped_fragments: Vec<WrappedFragment>,
-}
-
-impl CanonicalLine {
-    pub fn new() -> Self {
-        CanonicalLine {
-            wrapped_fragments: vec![WrappedFragment::new()],
-        }
-    }
-    pub fn add_new_wrap(&mut self, terminal_character: TerminalCharacter) {
-        let mut new_fragment = WrappedFragment::new();
-        new_fragment.add_character(terminal_character, 0);
-        self.wrapped_fragments.push(new_fragment);
-    }
-    pub fn change_width(&mut self, new_width: usize) {
-        let characters = self.flattened_characters();
-        let wrapped_fragments =
-            CanonicalLine::fill_fragments_up_to_width(characters, new_width, None);
-        self.wrapped_fragments = wrapped_fragments;
-    }
-    pub fn clear_after(&mut self, fragment_index: usize, column_index: usize) {
-        let fragment_to_clear = self
-            .wrapped_fragments
-            .get_mut(fragment_index)
-            .expect("fragment out of bounds");
-        fragment_to_clear.clear_after_and_including(column_index);
-        self.wrapped_fragments.truncate(fragment_index + 1);
-    }
-    pub fn replace_with_empty_chars(
-        &mut self,
-        fragment_index: usize,
-        from_col: usize,
-        count: usize,
-        style_of_empty_space: CharacterStyles,
-    ) {
-        let mut characters_replaced = 0;
-        let mut column_position_in_fragment = from_col;
-        let mut current_fragment = fragment_index;
-        let mut empty_space_character = EMPTY_TERMINAL_CHARACTER;
-        empty_space_character.styles = style_of_empty_space;
-        loop {
-            if characters_replaced == count {
-                break;
-            }
-            match self.wrapped_fragments.get_mut(current_fragment) {
-                Some(fragment_to_clear) => {
-                    let fragment_characters_count = fragment_to_clear.characters.len();
-                    if fragment_characters_count >= column_position_in_fragment {
-                        fragment_to_clear
-                            .add_character(empty_space_character, column_position_in_fragment);
-                        column_position_in_fragment += 1;
-                        characters_replaced += 1;
-                    } else {
-                        current_fragment += 1;
-                        column_position_in_fragment = 0;
-                    }
-                }
-                None => {
-                    // end of line, nothing more to clear
-                    break;
-                }
-            }
-        }
-    }
-    pub fn erase_chars(
-        &mut self,
-        fragment_index: usize,
-        from_col: usize,
-        count: usize,
-        style_of_empty_space: CharacterStyles,
-    ) {
-        let mut empty_character = EMPTY_TERMINAL_CHARACTER;
-        empty_character.styles = style_of_empty_space;
-        let current_width = self.wrapped_fragments.get(0).unwrap().characters.len();
-        let mut characters = self.flattened_characters();
-        let absolute_position_of_character = fragment_index * current_width + from_col;
-        for _ in 0..count {
-            characters.remove(absolute_position_of_character);
-        }
-        let wrapped_fragments = CanonicalLine::fill_fragments_up_to_width(
-            characters,
-            current_width,
-            Some(empty_character),
-        );
-        self.wrapped_fragments = wrapped_fragments;
-    }
-    pub fn replace_with_empty_chars_after_cursor(
-        &mut self,
-        fragment_index: usize,
-        from_col: usize,
-        total_columns: usize,
-        style_of_empty_space: CharacterStyles,
-    ) {
-        let mut empty_char_character = EMPTY_TERMINAL_CHARACTER;
-        empty_char_character.styles = style_of_empty_space;
-        let current_fragment = self.wrapped_fragments.get_mut(fragment_index).unwrap();
-        let fragment_characters_count = current_fragment.characters.len();
-
-        for i in from_col..fragment_characters_count {
-            current_fragment.add_character(empty_char_character, i);
-        }
-
-        for i in fragment_characters_count..total_columns {
-            current_fragment.add_character(empty_char_character, i);
-        }
-
-        self.wrapped_fragments.truncate(fragment_index + 1);
-    }
-    pub fn replace_with_empty_chars_before_cursor(
-        &mut self,
-        fragment_index: usize,
-        until_col: usize,
-        style_of_empty_space: CharacterStyles,
-    ) {
-        let mut empty_char_character = EMPTY_TERMINAL_CHARACTER;
-        empty_char_character.styles = style_of_empty_space;
-
-        if fragment_index > 0 {
-            for i in 0..(fragment_index - 1) {
-                let fragment = self.wrapped_fragments.get_mut(i).unwrap();
-                for i in 0..fragment.characters.len() {
-                    fragment.add_character(empty_char_character, i);
-                }
-            }
-        }
-        let current_fragment = self.wrapped_fragments.get_mut(fragment_index).unwrap();
-        for i in 0..until_col {
-            current_fragment.add_character(empty_char_character, i);
-        }
-    }
-    fn flattened_characters(&self) -> Vec<TerminalCharacter> {
-        self.wrapped_fragments
-            .iter()
-            .fold(
-                Vec::with_capacity(self.wrapped_fragments.len()),
-                |mut characters, wrapped_fragment| {
-                    characters.push(wrapped_fragment.characters.iter().copied());
-                    characters
-                },
-            )
-            .into_iter()
-            .flatten()
-            .collect()
-    }
-    fn fill_fragments_up_to_width(
-        mut characters: Vec<TerminalCharacter>,
-        width: usize,
-        padding: Option<TerminalCharacter>,
-    ) -> Vec<WrappedFragment> {
-        let mut wrapped_fragments = vec![];
-        while !characters.is_empty() {
-            if characters.len() > width {
-                wrapped_fragments.push(WrappedFragment::from_vec(
-                    characters.drain(..width).collect(),
-                ));
-            } else {
-                let mut last_fragment = WrappedFragment::from_vec(characters.drain(..).collect());
-                let last_fragment_len = last_fragment.characters.len();
-                if let Some(empty_char_character) = padding {
-                    if last_fragment_len < width {
-                        for _ in last_fragment_len..width {
-                            last_fragment.characters.push(empty_char_character);
-                        }
-                    }
-                }
-                wrapped_fragments.push(last_fragment);
-            }
-        }
-        if wrapped_fragments.is_empty() {
-            wrapped_fragments.push(WrappedFragment::new());
-        }
-        wrapped_fragments
-    }
-}
-
-impl Debug for CanonicalLine {
-    fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
-        for wrapped_fragment in &self.wrapped_fragments {
-            writeln!(f, "{:?}", wrapped_fragment)?;
-        }
-        Ok(())
-    }
-}
-
-#[derive(Clone)]
-pub struct WrappedFragment {
-    pub characters: Vec<TerminalCharacter>,
-}
-
-impl WrappedFragment {
-    pub fn new() -> Self {
-        WrappedFragment { characters: vec![] }
-    }
-    pub fn add_character(
-        &mut self,
-        terminal_character: TerminalCharacter,
-        position_in_line: usize,
-    ) {
-        if position_in_line == self.characters.len() {
-            self.characters.push(terminal_character);
-        } else {
-            // this is much more performant than remove/insert
-            self.characters.push(terminal_character);
-            self.characters.swap_remove(position_in_line);
-        }
-    }
-    pub fn from_vec(characters: Vec<TerminalCharacter>) -> Self {
-        WrappedFragment { characters }
-    }
-    pub fn clear_after_and_including(&mut self, character_index: usize) {
-        self.characters.truncate(character_index);
-    }
-}
-
-impl Debug for WrappedFragment {
-    fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
-        for character in &self.characters {
-            write!(f, "{:?}", character)?;
-        }
-        Ok(())
-    }
-}
-
-#[derive(Debug, Clone, Copy)]
-pub struct CursorPosition {
-    line_index: (usize, usize), // (canonical line index, fragment index in line)
-    column_index: usize,        // 0 is the first character from the pane edge
-}
-
-impl CursorPosition {
-    pub fn new() -> Self {
-        CursorPosition {
-            line_index: (0, 0),
-            column_index: 0,
-        }
-    }
-    pub fn move_forward(&mut self, count: usize) {
-        // TODO: panic if out of bounds?
-        self.column_index += count;
-    }
-    pub fn move_backwards(&mut self, count: usize) {
-        self.column_index = u32::overflowing_sub(self.column_index as u32, count as u32).0 as usize;
-    }
-    pub fn move_to_next_linewrap(&mut self) {
-        self.line_index.1 += 1;
-    }
-    pub fn move_to_next_canonical_line(&mut self) {
-        self.line_index.0 += 1;
-    }
-    pub fn _move_to_prev_canonical_line(&mut self) {
-        self.line_index.0 -= 1;
-    }
-    pub fn move_to_beginning_of_linewrap(&mut self) {
-        self.column_index = 0;
-    }
-    pub fn move_to_beginning_of_canonical_line(&mut self) {
-        self.column_index = 0;
-        self.line_index.1 = 0;
-    }
-    pub fn move_down_by_canonical_lines(&mut self, count: usize) {
-        // this method does not verify that we will not overflow
-        let current_canonical_line_position = self.line_index.0;
-        self.line_index = (current_canonical_line_position + count, 0);
-    }
-    pub fn move_to_canonical_line(&mut self, index: usize) {
-        self.line_index = (index, 0);
-    }
-    pub fn move_to_column(&mut self, col: usize) {
-        self.column_index = col;
-    }
-    pub fn reset(&mut self) {
-        self.column_index = 0;
-        self.line_index = (0, 0);
-    }
-}
-
-pub struct Scroll {
-    canonical_lines: Vec<CanonicalLine>,
-    cursor_position: CursorPosition,
-    total_columns: usize,
-    lines_in_view: usize,
-    viewport_bottom_offset: Option<usize>,
-    scroll_region: Option<(usize, usize)>, // start line, end line (if set, this is the area the will scroll)
-    show_cursor: bool,
-    alternative_buffer: Option<Vec<CanonicalLine>>,
-    alternative_cursor_position: Option<CursorPosition>,
-}
-
-impl Scroll {
-    pub fn new(total_columns: usize, lines_in_view: usize) -> Self {
-        let mut canonical_lines = vec![];
-        canonical_lines.push(CanonicalLine::new());
-        let cursor_position = CursorPosition::new();
-        Scroll {
-            canonical_lines: vec![CanonicalLine::new()], // The rest will be created by newlines explicitly
-            total_columns,
-            lines_in_view,
-            cursor_position,
-            viewport_bottom_offset: None,
-            scroll_region: None,
-            show_cursor: true,
-            alternative_buffer: None,
-            alternative_cursor_position: None,
-        }
-    }
-    pub fn as_character_lines(&self) -> Vec<Vec<TerminalCharacter>> {
-        let mut lines: VecDeque<Vec<TerminalCharacter>> = VecDeque::new(); // TODO: with capacity lines_from_end?
-        let canonical_lines = self.canonical_lines.iter().rev();
-        let mut lines_to_skip = self.viewport_bottom_offset.unwrap_or(0);
-        'gather_lines: for current_canonical_line in canonical_lines {
-            for wrapped_fragment in current_canonical_line.wrapped_fragments.iter().rev() {
-                let mut line: Vec<TerminalCharacter> =
-                    wrapped_fragment.characters.iter().copied().collect();
-                if lines_to_skip > 0 {
-                    lines_to_skip -= 1;
-                } else {
-                    // pad line if needed
-                    line.resize(self.total_columns, EMPTY_TERMINAL_CHARACTER);
-                    lines.push_front(line);
-                }
-                if lines.len() == self.lines_in_view {
-                    break 'gather_lines;
-                }
-            }
-        }
-        if lines.len() < self.lines_in_view {
-            // pad lines in case we don't have enough scrollback to fill the view
-            let empty_line = vec![EMPTY_TERMINAL_CHARACTER; self.total_columns];
-
-            for _ in lines.len()..self.lines_in_view {
-                // pad lines in case we didn't have enough
-                lines.push_back(empty_line.clone());
-            }
-        }
-        Vec::from(lines)
-    }
-    pub fn add_character(&mut self, terminal_character: TerminalCharacter) {
-        let (canonical_line_position, wrapped_fragment_index_in_line) =
-            self.cursor_position.line_index;
-        let cursor_position_in_line = self.cursor_position.column_index;
-        let current_line = self
-            .canonical_lines
-            .get_mut(canonical_line_position)
-            .expect("cursor out of bounds");
-        let current_wrapped_fragment = current_line
-            .wrapped_fragments
-            .get_mut(wrapped_fragment_index_in_line)
-            .expect("cursor out of bounds");
-
-        if cursor_position_in_line < self.total_columns {
-            current_wrapped_fragment.add_character(terminal_character, cursor_position_in_line);
-            self.cursor_position.move_forward(1);
-        } else {
-            current_line.add_new_wrap(terminal_character);
-            self.cursor_position.move_to_next_linewrap();
-            self.cursor_position.move_to_beginning_of_linewrap();
-            self.cursor_position.move_forward(1);
-        }
-    }
-    pub fn show_cursor(&mut self) {
-        self.show_cursor = true;
-    }
-    pub fn hide_cursor(&mut self) {
-        self.show_cursor = false;
-    }
-    pub fn add_canonical_line(&mut self) {
-        let current_canonical_line_index = self.cursor_position.line_index.0;
-        if let Some((scroll_region_top, scroll_region_bottom)) =
-            self.scroll_region_absolute_indices()
-        {
-            if current_canonical_line_index == scroll_region_bottom {
-                // end of scroll region
-                // when we have a scroll region set and we're at its bottom
-                // we need to delete its first line, thus shifting all lines in it upwards
-                // then we add an empty line at its end which will be filled by the application
-                // controlling the scroll region (presumably filled by whatever comes next in the
-                // scroll buffer, but that's not something we control)
-                self.canonical_lines.remove(scroll_region_top);
-                self.canonical_lines
-                    .insert(scroll_region_bottom, CanonicalLine::new());
-                return;
-            }
-        }
-
-        use std::cmp::Ordering;
-        match current_canonical_line_index.cmp(&(self.canonical_lines.len() - 1)) {
-            Ordering::Equal => {
-                self.canonical_lines.push(CanonicalLine::new());
-                self.cursor_position.move_to_next_canonical_line();
-                self.cursor_position.move_to_beginning_of_canonical_line();
-            }
-            Ordering::Less => {
-                self.cursor_position.move_to_next_canonical_line();
-                self.cursor_position.move_to_beginning_of_canonical_line();
-            }
-            _ => panic!("cursor out of bounds, cannot add_canonical_line"),
-        }
-    }
-    pub fn cursor_coordinates_on_screen(&self) -> Option<(usize, usize)> {
-        // (x, y)
-        if !self.show_cursor {
-            return None;
-        }
-        let (canonical_line_cursor_position, line_wrap_cursor_position) =
-            self.cursor_position.line_index;
-        let x = self.cursor_position.column_index;
-        let mut y = 0;
-        let indices_and_canonical_lines = self.canonical_lines.iter().enumerate().rev();
-        for (current_index, current_line) in indices_and_canonical_lines {
-            if current_index == canonical_line_cursor_position {
-                y += current_line.wrapped_fragments.len() - line_wrap_cursor_position;
-                break;
-            } else {
-                y += current_line.wrapped_fragments.len();
-            }
-        }
-        let total_lines = self
-            .canonical_lines
-            .iter()
-            .fold(0, |total_lines, current_line| {
-                total_lines + current_line.wrapped_fragments.len()
-            }); // TODO: is this performant enough? should it be cached or kept track of?
-        let y = if total_lines < self.lines_in_view {
-            total_lines - y
-        } else if y > self.lines_in_view {
-            self.lines_in_view
-        } else {
-            self.lines_in_view - y
-        };
-        Some((x, y))
-    }
-    pub fn move_cursor_forward(&mut self, count: usize) {
-        let (current_canonical_line_index, current_line_wrap_position) =
-            self.cursor_position.line_index;
-        let current_cursor_column_position = self.cursor_position.column_index;
-        let current_canonical_line = self
-            .canonical_lines
-            .get_mut(current_canonical_line_index)
-            .expect("cursor out of bounds");
-        let current_fragment = current_canonical_line
-            .wrapped_fragments
-            .get_mut(current_line_wrap_position)
-            .expect("cursor out of bounds");
-        let move_count = if current_cursor_column_position + count > self.total_columns {
-            // move to last column in the current line wrap
-            self.total_columns - current_cursor_column_position
-        } else {
-            count
-        };
-
-        current_fragment.characters.resize(
-            max(
-                current_fragment.characters.len(),
-                current_cursor_column_position + move_count,
-            ),
-            EMPTY_TERMINAL_CHARACTER,
-        );
-
-        self.cursor_position.move_forward(move_count);
-    }
-    pub fn move_cursor_back(&mut self, count: usize) {
-        let current_cursor_column_position = self.cursor_position.column_index;
-        if current_cursor_column_position < count {
-            self.cursor_position.move_to_beginning_of_linewrap();
-        } else {
-            self.cursor_position.move_backwards(count);
-        }
-    }
-    pub fn move_cursor_to_beginning_of_linewrap(&mut self) {
-        self.cursor_position.move_to_beginning_of_linewrap();
-    }
-    pub fn _move_cursor_to_beginning_of_canonical_line(&mut self) {
-        self.cursor_position.move_to_beginning_of_canonical_line();
-    }
-    pub fn move_cursor_backwards(&mut self, count: usize) {
-        self.cursor_position.move_backwards(count);
-    }
-    pub fn move_cursor_up(&mut self, count: usize) {
-        for _ in 0..count {
-            let (current_canonical_line_index, current_line_wrap_index) =
-                self.cursor_position.line_index;
-            if current_line_wrap_index > 0 {
-                // go up one line-wrap
-                self.cursor_position.line_index.1 -= 1;
-            } else if current_canonical_line_index > 0 {
-                // go up to previous canonical line
-                self.cursor_position.line_index.0 -= 1;
-                let current_canonical_line = self
-                    .canonical_lines
-                    .get(self.cursor_position.line_index.0)
-                    .unwrap();
-                let wraps_in_current_line = current_canonical_line.wrapped_fragments.len();
-                // make sure to only go up to the last wrap of the previous line
-                self.cursor_position.line_index.1 = wraps_in_current_line - 1;
-            }
-        }
-    }
-    pub fn move_cursor_down(&mut self, count: usize) {
-        let current_canonical_line = self.cursor_position.line_index.0;
-        let max_count = (self.canonical_lines.len() - 1) - current_canonical_line;
-        let count = std::cmp::min(count, max_count);
-        self.cursor_position.move_down_by_canonical_lines(count);
-    }
-    pub fn change_size(&mut self, columns: usize, lines: usize) {
-        for canonical_line in self.canonical_lines.iter_mut() {
-            canonical_line.change_width(columns);
-        }
-        let cursor_line = self
-            .canonical_lines
-            .get(self.cursor_position.line_index.0)
-            .expect("cursor out of bounds");
-        if cursor_line.wrapped_fragments.len() <= self.cursor_position.line_index.1 {
-            self.cursor_position.line_index.1 = cursor_line.wrapped_fragments.len() - 1;
-        }
-        self.lines_in_view = lines;
-        self.total_columns = columns;
-    }
-    pub fn clear_canonical_line_right_of_cursor(&mut self, style_of_empty_space: CharacterStyles) {
-        let (current_canonical_line_index, current_line_wrap_position) =
-            self.cursor_position.line_index;
-        let current_cursor_column_position = self.cursor_position.column_index;
-        let current_canonical_line = self
-            .canonical_lines
-            .get_mut(current_canonical_line_index)
-            .expect("cursor out of bounds");
-        current_canonical_line.replace_with_empty_chars_after_cursor(
-            current_line_wrap_position,
-            current_cursor_column_position,
-            self.total_columns,
-            style_of_empty_space,
-        );
-    }
-    pub fn clear_canonical_line_left_of_cursor(&mut self, style_of_empty_space: CharacterStyles) {
-        let (current_canonical_line_index, current_line_wrap_position) =
-            self.cursor_position.line_index;
-        let current_cursor_column_position = self.cursor_position.column_index;
-        let current_canonical_line = self
-            .canonical_lines
-            .get_mut(current_canonical_line_index)
-            .expect("cursor out of bounds");
-        current_canonical_line.replace_with_empty_chars_before_cursor(
-            current_line_wrap_position,
-            current_cursor_column_position,
-            style_of_empty_space,
-        );
-    }
-    pub fn clear_all_after_cursor(&mut self) {
-        let (current_canonical_line_index, current_line_wrap_position) =
-            self.cursor_position.line_index;
-        let current_cursor_column_position = self.cursor_position.column_index;
-        let current_canonical_line = self
-            .canonical_lines
-            .get_mut(current_canonical_line_index)
-            .expect("cursor out of bounds");
-        current_canonical_line
-            .clear_after(current_line_wrap_position, current_cursor_column_position);
-        self.canonical_lines
-            .truncate(current_canonical_line_index + 1);
-    }
-    pub fn replace_with_empty_chars(
-        &mut self,
-        count: usize,
-        style_of_empty_space: CharacterStyles,
-    ) {
-        let (current_canonical_line_index, current_line_wrap_position) =
-            self.cursor_position.line_index;
-        let current_cursor_column_position = self.cursor_position.column_index;
-        let current_canonical_line = self
-            .canonical_lines
-            .get_mut(current_canonical_line_index)
-            .expect("cursor out of bounds");
-        current_canonical_line.replace_with_empty_chars(
-            current_line_wrap_position,
-            current_cursor_column_position,
-            count,
-            style_of_empty_space,
-        );
-    }
-    pub fn erase_characters(&mut self, count: usize, style_of_empty_space: CharacterStyles) {
-        let (current_canonical_line_index, current_line_wrap_position) =
-            self.cursor_position.line_index;
-        let current_cursor_column_position = self.cursor_position.column_index;
-        let current_canonical_line = self
-            .canonical_lines
-            .get_mut(current_canonical_line_index)
-            .expect("cursor out of bounds");
-        current_canonical_line.erase_chars(
-            current_line_wrap_position,
-            current_cursor_column_position,
-            count,
-            style_of_empty_space,
-        );
-    }
-    pub fn clear_all(&mut self) {
-        self.canonical_lines.clear();
-        self.canonical_lines.push(CanonicalLine::new());
-        self.cursor_position.reset();
-    }
-    pub fn move_cursor_to(&mut self, line: usize, col: usize) {
-        let line_on_screen = if self.canonical_lines.len() > self.lines_in_view {
-            line + (self.canonical_lines.len() - self.lines_in_view)
-        } else {
-            line
-        };
-        if self.canonical_lines.len() > line_on_screen {
-            self.cursor_position.move_to_canonical_line(line_on_screen);
-        } else {
-            for _ in self.canonical_lines.len()..=line_on_screen {
-                self.canonical_lines.push(CanonicalLine::new());
-            }
-            self.cursor_position.move_to_canonical_line(line_on_screen);
-        }
-        let (current_canonical_line_index, current_line_wrap_position) =
-            self.cursor_position.line_index;
-        let current_canonical_line = self
-            .canonical_lines
-            .get_mut(current_canonical_line_index)
-            .expect("cursor out of bounds");
-        let current_fragment = current_canonical_line
-            .wrapped_fragments
-            .get_mut(current_line_wrap_position)
-            .expect("cursor out of bounds");
-
-        current_fragment.characters.resize(
-            max(current_fragment.characters.len(), col),
-            EMPTY_TERMINAL_CHARACTER,
-        );
-        self.cursor_position.move_to_column(col);
-    }
-    pub fn move_cursor_to_column(&mut self, col: usize) {
-        let current_canonical_line = self.cursor_position.line_index.0;
-        self.move_cursor_to(current_canonical_line, col);
-    }
-    pub fn move_cursor_to_line(&mut self, line: usize) {
-        let current_column = self.cursor_position.column_index;
-        self.move_cursor_to(line, current_column);
-    }
-    pub fn move_current_buffer_to_alternative_buffer(&mut self) {
-        self.alternative_buffer = Some(self.canonical_lines.drain(..).collect());
-        self.alternative_cursor_position = Some(self.cursor_position);
-        self.clear_all();
-    }
-    pub fn override_current_buffer_with_alternative_buffer(&mut self) {
-        if let Some(alternative_buffer) = self.alternative_buffer.as_mut() {
-            self.canonical_lines = alternative_buffer.drain(..).collect();
-        }
-        if let Some(alternative_cursor_position) = self.alternative_cursor_position {
-            self.cursor_position = alternative_cursor_position;
-        }
-        self.alternative_buffer = None;
-        self.alternative_cursor_position = None;
-    }
-    pub fn set_scroll_region(&mut self, top_line: usize, bottom_line: usize) {
-        self.scroll_region = Some((top_line, bottom_line));
-    }
-    pub fn clear_scroll_region(&mut self) {
-        self.scroll_region = None;
-    }
-    fn scroll_region_absolute_indices(&mut self) -> Option<(usize, usize)> {
-        self.scroll_region?;
-        if self.canonical_lines.len() > self.lines_in_view {
-            let absolute_top = self.canonical_lines.len() - 1 - self.lines_in_view;
-            let absolute_bottom = self.canonical_lines.len() - 1;
-            Some((absolute_top, absolute_bottom))
-        } else {
-            Some((self.scroll_region.unwrap().0, self.scroll_region.unwrap().1))
-        }
-    }
-    fn scroll_region_absolute_indices_or_screen_edges(&mut self) -> (usize, usize) {
-        match self.scroll_region {
-            Some(_scroll_region) => self.scroll_region_absolute_indices().unwrap(),
-            None => {
-                // indices of screen top and bottom edge
-                // TODO: what if we don't have enough lines?
-                // let absolute_top = self.canonical_lines.len() - 1 - self.lines_in_view;
-                let absolute_top = self.canonical_lines.len() - self.lines_in_view;
-                let absolute_bottom = self.canonical_lines.len() - 1;
-                (absolute_top, absolute_bottom)
-            }
-        }
-    }
-    pub fn delete_lines_in_scroll_region(&mut self, count: usize) {
-        if let Some((scroll_region_top, scroll_region_bottom)) =
-            self.scroll_region_absolute_indices()
-        {
-            let current_canonical_line_index = self.cursor_position.line_index.0;
-            if current_canonical_line_index >= scroll_region_top
-                && current_canonical_line_index <= scroll_region_bottom
-            {
-                // when deleting lines inside the scroll region, we must make sure it stays the
-                // same size (and that other lines below it aren't shifted inside it)
-                // so we delete the current line(s) and add an empty line at the end of the scroll
-                // region
-                for _ in 0..count {
-                    self.canonical_lines.remove(current_canonical_line_index);
-                    self.canonical_lines
-                        .insert(scroll_region_bottom, CanonicalLine::new());
-                }
-            }
-        }
-    }
-    pub fn add_empty_lines_in_scroll_region(&mut self, count: usize) {
-        if let Some((scroll_region_top, scroll_region_bottom)) =
-            self.scroll_region_absolute_indices()
-        {
-            let current_canonical_line_index = self.cursor_position.line_index.0;
-            if current_canonical_line_index >= scroll_region_top
-                && current_canonical_line_index <= scroll_region_bottom
-            {
-                // when adding empty lines inside the scroll region, we must make sure it stays the
-                // same size and that lines don't "leak" outside of it
-                // so we add an empty line where the cursor currently is, and delete the last line
-                // of the scroll region
-                for _ in 0..count {
-                    self.canonical_lines.remove(scroll_region_bottom);
-                    self.canonical_lines
-                        .insert(current_canonical_line_index, CanonicalLine::new());
-                }
-            }
-        }
-    }
-    pub fn move_cursor_up_in_scroll_region(&mut self, count: usize) {
-        let (scroll_region_top, scroll_region_bottom) =
-            self.scroll_region_absolute_indices_or_screen_edges();
-        for _ in 0..count {
-            let current_canonical_line_index = self.cursor_position.line_index.0;
-            if current_canonical_line_index == scroll_region_top {
-                // if we're at the top line, we create a new line and remove the last line that
-                // would otherwise overflow
-                self.canonical_lines.remove(scroll_region_bottom);
-                self.canonical_lines
-                    .insert(current_canonical_line_index, CanonicalLine::new());
-            } else if current_canonical_line_index > scroll_region_top
-                && current_canonical_line_index <= scroll_region_bottom
-            {
-                self.move_cursor_up(count);
-            }
-        }
-    }
-    /// [scroll_up](https://github.com/alacritty/alacritty/blob/ec42b42ce601808070462111c0c28edb0e89babb/alacritty_terminal/src/grid/mod.rs#L261)
-    /// This function takes the first line of the scroll region and moves it to the bottom (count times)
-    pub fn rotate_scroll_region_up(&mut self, count: usize) {
-        if let Some((_, scroll_region_bottom)) = self.scroll_region_absolute_indices() {
-            if self.show_cursor {
-                let scroll_region_bottom_index = scroll_region_bottom - 1;
-                self.cursor_position
-                    .move_to_canonical_line(scroll_region_bottom_index);
-
-                let new_empty_lines = vec![CanonicalLine::new(); count];
-                self.canonical_lines.splice(
-                    scroll_region_bottom_index..scroll_region_bottom_index + 1,
-                    new_empty_lines,
-                );
-
-                self.cursor_position
-                    .move_to_canonical_line(scroll_region_bottom_index + count);
-            }
-        }
-    }
-    /// [scroll_down](https://github.com/alacritty/alacritty/blob/ec42b42ce601808070462111c0c28edb0e89babb/alacritty_terminal/src/grid/mod.rs#L221)
-    /// This function takes the last line of the scroll region and moves it to the top (count times)
-    pub fn rotate_scroll_region_down(&mut self, count: usize) {
-        if let Some((scroll_region_top, _)) = self.scroll_region_absolute_indices() {
-            if self.show_cursor {
-                let scroll_region_top_index = scroll_region_top - 1;
-                self.cursor_position
-                    .move_to_canonical_line(scroll_region_top_index);
-
-                let new_empty_lines = vec![CanonicalLine::new(); count];
-                self.canonical_lines.splice(
-                    scroll_region_top_index..scroll_region_top_index,
-                    new_empty_lines,
-                );
-
-                self.cursor_position
-                    .move_to_canonical_line(scroll_region_top_index + count);
-            }
-        }
-    }
-    pub fn move_viewport_up(&mut self, count: usize) {
-        if let Some(current_offset) = self.viewport_bottom_offset.as_mut() {
-            *current_offset += count;
-        } else {
-            self.viewport_bottom_offset = Some(count);
-        }
-    }
-    pub fn move_viewport_down(&mut self, count: usize) {
-        if let Some(current_offset) = self.viewport_bottom_offset.as_mut() {
-            if *current_offset > count {
-                *current_offset -= count;
-            } else {
-                self.viewport_bottom_offset = None;
-            }
-        }
-    }
-    pub fn reset_viewport(&mut self) {
-        self.viewport_bottom_offset = None;
-    }
-}
-
-impl Debug for Scroll {
-    fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
-        for line in &self.canonical_lines {
-            writeln!(f, "{:?}", line)?;
-        }
-        Ok(())
-    }
-}
diff --git a/src/panes/terminal_pane.rs b/src/panes/terminal_pane.rs
index d15c7649..6b78b647 100644
--- a/src/panes/terminal_pane.rs
+++ b/src/panes/terminal_pane.rs
@@ -4,9 +4,13 @@ use crate::tab::Pane;
 use ::nix::pty::Winsize;
 use ::std::os::unix::io::RawFd;
 use ::vte::Perform;
+use std::fmt::{self, Debug, Formatter};
 
-use crate::panes::terminal_character::{CharacterStyles, TerminalCharacter};
-use crate::panes::Scroll;
+use crate::boundaries::Rect;
+use crate::panes::grid::{Grid, Row};
+use crate::panes::terminal_character::{
+    CharacterStyles, TerminalCharacter, EMPTY_TERMINAL_CHARACTER,
+};
 use crate::utils::logging::debug_log_to_file;
 use crate::VteEvent;
 
@@ -35,8 +39,9 @@ impl From<Winsize> for PositionAndSize {
 
 #[derive(Debug)]
 pub struct TerminalPane {
+    pub grid: Grid,
+    pub alternative_grid: Option<Grid>, // for 1049h/l instructions which tell us to switch between these two
     pub pid: RawFd,
-    pub scroll: Scroll,
     pub should_render: bool,
     pub selectable: bool,
     pub position_and_size: PositionAndSize,
@@ -112,7 +117,7 @@ impl Pane for TerminalPane {
     }
     fn cursor_coordinates(&self) -> Option<(usize, usize)> {
         // (x, y)
-        self.scroll.cursor_coordinates_on_screen()
+        self.grid.cursor_coordinates()
     }
     fn adjust_input_to_terminal(&self, input_bytes: Vec<u8>) -> Vec<u8> {
         // there are some cases in which the terminal state means that input sent to it
@@ -259,27 +264,28 @@ impl Pane for TerminalPane {
         self.mark_for_rerender();
     }
     fn scroll_up(&mut self, count: usize) {
-        self.scroll.move_viewport_up(count);
+        self.grid.move_viewport_up(count);
         self.mark_for_rerender();
     }
     fn scroll_down(&mut self, count: usize) {
-        self.scroll.move_viewport_down(count);
+        self.grid.move_viewport_down(count);
         self.mark_for_rerender();
     }
     fn clear_scroll(&mut self) {
-        self.scroll.reset_viewport();
+        self.grid.reset_viewport();
         self.mark_for_rerender();
     }
 }
 
 impl TerminalPane {
     pub fn new(pid: RawFd, position_and_size: PositionAndSize) -> TerminalPane {
-        let scroll = Scroll::new(position_and_size.columns, position_and_size.rows);
+        let grid = Grid::new(position_and_size.rows, position_and_size.columns);
         let pending_styles = CharacterStyles::new();
 
         TerminalPane {
             pid,
-            scroll,
+            grid,
+            alternative_grid: None,
             should_render: true,
             selectable: true,
             pending_styles,
@@ -318,35 +324,108 @@ impl TerminalPane {
     fn reflow_lines(&mut self) {
         let rows = self.get_rows();
         let columns = self.get_columns();
-        self.scroll.change_size(columns, rows);
+        self.grid.change_size(rows, columns);
+        if let Some(alternative_grid) = self.alternative_grid.as_mut() {
+            alternative_grid.change_size(rows, columns);
+        }
     }
 
     pub fn read_buffer_as_lines(&self) -> Vec<Vec<TerminalCharacter>> {
-        self.scroll.as_character_lines()
+        self.grid.as_character_lines()
     }
     #[cfg(test)]
     pub fn cursor_coordinates(&self) -> Option<(usize, usize)> {
         // (x, y)
-        self.scroll.cursor_coordinates_on_screen()
+        self.grid.cursor_coordinates()
+    }
+    pub fn scroll_up(&mut self, count: usize) {
+        self.grid.move_viewport_up(count);
+        self.mark_for_rerender();
+    }
+    pub fn scroll_down(&mut self, count: usize) {
+        self.grid.move_viewport_down(count);
+        self.mark_for_rerender();
     }
     pub fn rotate_scroll_region_up(&mut self, count: usize) {
-        self.scroll.rotate_scroll_region_up(count);
+        self.grid.rotate_scroll_region_up(count);
         self.mark_for_rerender();
     }
     pub fn rotate_scroll_region_down(&mut self, count: usize) {
-        self.scroll.rotate_scroll_region_down(count);
+        self.grid.rotate_scroll_region_down(count);
+        self.mark_for_rerender();
+    }
+    pub fn clear_scroll(&mut self) {
+        self.grid.reset_viewport();
+        self.mark_for_rerender();
+    }
+    pub fn override_size_and_position(&mut self, x: usize, y: usize, size: &PositionAndSize) {
+        let position_and_size_override = PositionAndSize {
+            x,
+            y,
+            rows: size.rows,
+            columns: size.columns,
+        };
+        self.position_and_size_override = Some(position_and_size_override);
+        self.reflow_lines();
         self.mark_for_rerender();
     }
+    pub fn reset_size_and_position_override(&mut self) {
+        self.position_and_size_override = None;
+        self.reflow_lines();
+        self.mark_for_rerender();
+    }
+    pub fn adjust_input_to_terminal(&self, input_bytes: Vec<u8>) -> Vec<u8> {
+        // there are some cases in which the terminal state means that input sent to it
+        // needs to be adjusted.
+        // here we match against those cases - if need be, we adjust the input and if not
+        // we send back the original input
+        match input_bytes.as_slice() {
+            [27, 91, 68] => {
+                // left arrow
+                if self.cursor_key_mode {
+                    // please note that in the line below, there is an ANSI escape code (27) at the beginning of the string,
+                    // some editors will not show this
+                    return "OD".as_bytes().to_vec();
+                }
+            }
+            [27, 91, 67] => {
+                // right arrow
+                if self.cursor_key_mode {
+                    // please note that in the line below, there is an ANSI escape code (27) at the beginning of the string,
+                    // some editors will not show this
+                    return "OC".as_bytes().to_vec();
+                }
+            }
+            [27, 91, 65] => {
+                // up arrow
+                if self.cursor_key_mode {
+                    // please note that in the line below, there is an ANSI escape code (27) at the beginning of the string,
+                    // some editors will not show this
+                    return "OA".as_bytes().to_vec();
+                }
+            }
+            [27, 91, 66] => {
+                // down arrow
+                if self.cursor_key_mode {
+                    // please note that in the line below, there is an ANSI escape code (27) at the beginning of the string,
+                    // some editors will not show this
+                    return "OB".as_bytes().to_vec();
+                }
+            }
+            _ => {}
+        };
+        input_bytes
+    }
     fn add_newline(&mut self) {
-        self.scroll.add_canonical_line();
+        self.grid.add_canonical_line();
         // self.reset_all_ansi_codes(); // TODO: find out if we should be resetting here or not
         self.mark_for_rerender();
     }
     fn move_to_beginning_of_line(&mut self) {
-        self.scroll.move_cursor_to_beginning_of_linewrap();
+        self.grid.move_cursor_to_beginning_of_line();
     }
     fn move_cursor_backwards(&mut self, count: usize) {
-        self.scroll.move_cursor_backwards(count);
+        self.grid.move_cursor_backwards(count);
     }
     fn _reset_all_ansi_codes(&mut self) {
         self.pending_styles.clear();
@@ -361,7 +440,7 @@ impl vte::Perform for TerminalPane {
             character: c,
             styles: self.pending_styles,
         };
-        self.scroll.add_character(terminal_character);
+        self.grid.add_character(terminal_character);
     }
 
     fn execute(&mut self, byte: u8) {
@@ -377,7 +456,7 @@ impl vte::Perform for TerminalPane {
                     styles: self.pending_styles,
                 };
                 // TODO: handle better with line wrapping
-                self.scroll.add_character(terminal_tab_character);
+                self.grid.add_character(terminal_tab_character);
             }
             10 => {
                 // 0a, newline
@@ -417,23 +496,28 @@ impl vte::Perform for TerminalPane {
             } else {
                 params[0] as usize
             };
-            self.scroll.move_cursor_forward(move_by);
+            self.grid.move_cursor_forward_until_edge(move_by);
         } else if c == 'K' {
             // clear line (0 => right, 1 => left, 2 => all)
             if params[0] == 0 {
-                self.scroll
-                    .clear_canonical_line_right_of_cursor(self.pending_styles);
+                let mut char_to_replace = EMPTY_TERMINAL_CHARACTER;
+                char_to_replace.styles = self.pending_styles;
+                self.grid
+                    .replace_characters_in_line_after_cursor(char_to_replace);
             } else if params[0] == 1 {
-                self.scroll
-                    .clear_canonical_line_left_of_cursor(self.pending_styles);
+                let mut char_to_replace = EMPTY_TERMINAL_CHARACTER;
+                char_to_replace.styles = self.pending_styles;
+                self.grid
+                    .replace_characters_in_line_before_cursor(char_to_replace);
+            } else if params[0] == 2 {
+                self.grid.clear_cursor_line();
             }
-        // TODO: implement 2
         } else if c == 'J' {
             // clear all (0 => below, 1 => above, 2 => all, 3 => saved)
             if params[0] == 0 {
-                self.scroll.clear_all_after_cursor();
+                self.grid.clear_all_after_cursor();
             } else if params[0] == 2 {
-                self.scroll.clear_all();
+                self.grid.clear_all();
             }
         // TODO: implement 1
         } else if c == 'H' {
@@ -452,22 +536,22 @@ impl vte::Perform for TerminalPane {
             } else {
                 (params[0] as usize - 1, params[1] as usize - 1)
             };
-            self.scroll.move_cursor_to(row, col);
+            self.grid.move_cursor_to(col, row);
         } else if c == 'A' {
             // move cursor up until edge of screen
             let move_up_count = if params[0] == 0 { 1 } else { params[0] };
-            self.scroll.move_cursor_up(move_up_count as usize);
+            self.grid.move_cursor_up(move_up_count as usize);
         } else if c == 'B' {
             // move cursor down until edge of screen
             let move_down_count = if params[0] == 0 { 1 } else { params[0] };
-            self.scroll.move_cursor_down(move_down_count as usize);
+            self.grid.move_cursor_down(move_down_count as usize);
         } else if c == 'D' {
             let move_back_count = if params[0] == 0 {
                 1
             } else {
                 params[0] as usize
             };
-            self.scroll.move_cursor_back(move_back_count);
+            self.grid.move_cursor_back(move_back_count);
         } else if c == 'l' {
             let first_intermediate_is_questionmark = match _intermediates.get(0) {
                 Some(b'?') => true,
@@ -477,11 +561,14 @@ impl vte::Perform for TerminalPane {
             if first_intermediate_is_questionmark {
                 match params.get(0) {
                     Some(&1049) => {
-                        self.scroll
-                            .override_current_buffer_with_alternative_buffer();
+                        if let Some(alternative_grid) = self.alternative_grid.as_mut() {
+                            std::mem::swap(&mut self.grid, alternative_grid);
+                            // self.grid = alternative_grid;
+                        }
+                        self.alternative_grid = None;
                     }
                     Some(&25) => {
-                        self.scroll.hide_cursor();
+                        self.grid.hide_cursor();
                         self.mark_for_rerender();
                     }
                     Some(&1) => {
@@ -499,11 +586,21 @@ impl vte::Perform for TerminalPane {
             if first_intermediate_is_questionmark {
                 match params.get(0) {
                     Some(&25) => {
-                        self.scroll.show_cursor();
+                        self.grid.show_cursor();
                         self.mark_for_rerender();
                     }
                     Some(&1049) => {
-                        self.scroll.move_current_buffer_to_alternative_buffer();
+                        let columns = self
+                            .position_and_size_override
+                            .map(|x| x.columns)
+                            .unwrap_or(self.position_and_size.columns);
+                        let rows = self
+                            .position_and_size_override
+                            .map(|x| x.rows)
+                            .unwrap_or(self.position_and_size.rows);
+                        let current_grid =
+                            std::mem::replace(&mut self.grid, Grid::new(rows, columns));
+                        self.alternative_grid = Some(current_grid);
                     }
                     Some(&1) => {
                         self.cursor_key_mode = true;
@@ -516,11 +613,11 @@ impl vte::Perform for TerminalPane {
                 // minus 1 because these are 1 indexed
                 let top_line_index = params[0] as usize - 1;
                 let bottom_line_index = params[1] as usize - 1;
-                self.scroll
+                self.grid
                     .set_scroll_region(top_line_index, bottom_line_index);
-                self.scroll.show_cursor();
+                self.grid.show_cursor();
             } else {
-                self.scroll.clear_scroll_region();
+                self.grid.clear_scroll_region();
             }
         } else if c == 't' {
             // TBD - title?
@@ -535,7 +632,7 @@ impl vte::Perform for TerminalPane {
             } else {
                 params[0] as usize
             };
-            self.scroll
+            self.grid
                 .delete_lines_in_scroll_region(line_count_to_delete);
         } else if c == 'L' {
             // insert blank lines if inside scroll region
@@ -544,7 +641,7 @@ impl vte::Perform for TerminalPane {
             } else {
                 params[0] as usize
             };
-            self.scroll
+            self.grid
                 .add_empty_lines_in_scroll_region(line_count_to_add);
         } else if c == 'q' {
             // ignore for now to run on mac
@@ -552,10 +649,9 @@ impl vte::Perform for TerminalPane {
             let column = if params[0] == 0 {
                 0
             } else {
-                // params[0] as usize
                 params[0] as usize - 1
             };
-            self.scroll.move_cursor_to_column(column);
+            self.grid.move_cursor_to_column(column);
         } else if c == 'd' {
             // goto line
             let line = if params[0] == 0 {
@@ -564,7 +660,7 @@ impl vte::Perform for TerminalPane {
                 // minus 1 because this is 1 indexed
                 params[0] as usize - 1
             };
-            self.scroll.move_cursor_to_line(line);
+            self.grid.move_cursor_to_line(line);
         } else if c == 'P' {
             // erase characters
             let count = if params[0] == 0 {
@@ -572,7 +668,7 @@ impl vte::Perform for TerminalPane {
             } else {
                 params[0] as usize
             };
-            self.scroll.erase_characters(count, self.pending_styles);
+            self.grid.erase_characters(count, self.pending_styles);
         } else if c == 'X' {
             // erase characters and replace with empty characters of current style
             let count = if params[0] == 0 {
@@ -580,7 +676,7 @@ impl vte::Perform for TerminalPane {
             } else {
                 params[0] as usize
             };
-            self.scroll
+            self.grid
                 .replace_with_empty_chars(count, self.pending_styles);
         } else if c == 'T' {
             /*
@@ -602,16 +698,19 @@ impl vte::Perform for TerminalPane {
             } else {
                 params[0] as usize
             };
-            self.scroll.delete_lines_in_scroll_region(count);
-            self.scroll.add_empty_lines_in_scroll_region(count);
+            self.grid.delete_lines_in_scroll_region(count);
+            self.grid.add_empty_lines_in_scroll_region(count);
         } else {
             let _ = debug_log_to_file(format!("Unhandled csi: {}->{:?}", c, params));
         }
     }
 
     fn esc_dispatch(&mut self, intermediates: &[u8], _ignore: bool, byte: u8) {
-        if let (b'M', None) = (byte, intermediates.get(0)) {
-            self.scroll.move_cursor_up_in_scroll_region(1);
+        match (byte, intermediates.get(0)) {
+            (b'M', None) => {
+                self.grid.move_cursor_up_with_scrolling(1);
+            }
+            _ => {}
         }
     }
 }
diff --git a/src/tests/integration/snapshots/mosaic__tests__integration__compatibility__fish_paste_multiline-2.snap b/src/tests/integration/snapshots/mosaic__tests__integration__compatibility__fish_paste_multiline-2.snap
index d1c18eb2..60dc4f7d 100644
--- a/src/tests/integration/snapshots/mosaic__tests__integration__compatibility__fish_paste_multiline-2.snap
+++ b/src/tests/integration/snapshots/mosaic__tests__integration__compatibility__fish_paste_multiline-2.snap
@@ -21,7 +21,6 @@ df: /run/user/1000/doc: Operation not permitted
                                             awk '{printf "\\\\t%s\\\\t%4s / %4s  %s\\\\n\n", $6, $3, $2, $5}' | \                                    
                                             sed -e 's/^\(.*\([8][5-9]\|[9][0-9]\)%.*\)$/\\\\e[0;31m\1\\\\e[0m/' -e 's/^\(.*\([7][5-9]\|[8][0-4]\)%.*\
 )$/\\\\e[0;33m\1\\\\e[0m/' | \                                                                                                                       
-)                                                                                                                                                    
                                             paste -sd ''\                                                                                            
                                         )█                                                                                                           
                                                                                                                                                      
@@ -30,3 +29,4 @@ df: /run/user/1000/doc: Operation not permitted
                                                                                                                                                      
                                                                                                                                                      
                                                                                                                                                      
+                                                                                                                                                     
diff --git a/src/tests/integration/snapshots/mosaic__tests__integration__compatibility__fish_paste_multiline-3.snap b/src/tests/integration/snapshots/mosaic__tests__integration__compatibility__fish_paste_multiline-3.snap
index a1cb439e..0e4b997f 100644
--- a/src/tests/integration/snapshots/mosaic__tests__integration__compatibility__fish_paste_multiline-3.snap
+++ b/src/tests/integration/snapshots/mosaic__tests__integration__compatibility__fish_paste_multiline-3.snap
@@ -20,7 +20,6 @@ df: /run/user/1000/doc: Operation not permitted
                                             awk '{printf "\\\\t%s\\\\t%4s / %4s  %s\\\\n\n", $6, $3, $2, $5}' | \                                    
                                             sed -e 's/^\(.*\([8][5-9]\|[9][0-9]\)%.*\)$/\\\\e[0;31m\1\\\\e[0m/' -e 's/^\(.*\([7][5-9]\|[8][0-4]\)%.*\
 )$/\\\\e[0;33m\1\\\\e[0m/' | \                                                                                                                       
-)                                                                                                                                                    
                                             paste -sd ''\                                                                                            
                                         )                                                                                                            
                                                                                                                                                      
@@ -29,4 +28,5 @@ df: /run/user/1000/doc: Operation not permitted
                                                                                                                                                      
                                                                                                                                                      
                                                                                                                                                      
+                                                                                                                                                     
 Bye from Mosaic!█                                                                                                                                    
diff --git a/src/tests/tty_inputs.rs b/src/tests/tty_inputs.rs
index 387724cc..2f57cf9f 100644
--- a/src/tests/tty_inputs.rs
+++ b/src/tests/tty_inputs.rs
@@ -1,389 +1,389 @@
 pub const COL_121: [&str; 20] = [
-    "line1-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n",
-    "line2-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n",
-    "line3-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n",
-    "line4-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n",
-    "line5-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n",
-    "line6-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n",
-    "line7-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n",
-    "line8-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n",
-    "line9-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n",
-    "line10-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n",
-    "line11-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n",
-    "line12-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n",
-    "line13-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n",
-    "line14-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n",
-    "line15-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n",
-    "line16-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n",
-    "line17-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n",
-    "line18-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n",
-    "line19-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n",
+    "line1-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\r\n",
+    "line2-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\r\n",
+    "line3-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\r\n",
+    "line4-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\r\n",
+    "line5-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\r\n",
+    "line6-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\r\n",
+    "line7-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\r\n",
+    "line8-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\r\n",
+    "line9-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\r\n",
+    "line10-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\r\n",
+    "line11-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\r\n",
+    "line12-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\r\n",
+    "line13-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\r\n",
+    "line14-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\r\n",
+    "line15-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\r\n",
+    "line16-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\r\n",
+    "line17-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\r\n",
+    "line18-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\r\n",
+    "line19-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\r\n",
     "prompt $ ",
 ];
 
 pub const COL_10: [&str; 20] = [
-    "line1-bbbb\n",
-    "line2-bbbb\n",
-    "line3-bbbb\n",
-    "line4-bbbb\n",
-    "line5-bbbb\n",
-    "line6-bbbb\n",
-    "line7-bbbb\n",
-    "line8-bbbb\n",
-    "line9-bbbb\n",
-    "line10-bbb\n",
-    "line11-bbb\n",
-    "line12-bbb\n",
-    "line13-bbb\n",
-    "line14-bbb\n",
-    "line15-bbb\n",
-    "line16-bbb\n",
-    "line17-bbb\n",
-    "line18-bbb\n",
-    "line19-bbb\n",
+    "line1-bbbb\r\n",
+    "line2-bbbb\r\n",
+    "line3-bbbb\r\n",
+    "line4-bbbb\r\n",
+    "line5-bbbb\r\n",
+    "line6-bbbb\r\n",
+    "line7-bbbb\r\n",
+    "line8-bbbb\r\n",
+    "line9-bbbb\r\n",
+    "line10-bbb\r\n",
+    "line11-bbb\r\n",
+    "line12-bbb\r\n",
+    "line13-bbb\r\n",
+    "line14-bbb\r\n",
+    "line15-bbb\r\n",
+    "line16-bbb\r\n",
+    "line17-bbb\r\n",
+    "line18-bbb\r\n",
+    "line19-bbb\r\n",
     "prompt $ ",
 ];
 
 pub const COL_14: [&str; 20] = [
-    "line1-bbbbbbbb\n",
-    "line2-bbbbbbbb\n",
-    "line3-bbbbbbbb\n",
-    "line4-bbbbbbbb\n",
-    "line5-bbbbbbbb\n",
-    "line6-bbbbbbbb\n",
-    "line7-bbbbbbbb\n",
-    "line8-bbbbbbbb\n",
-    "line9-bbbbbbbb\n",
-    "line10-bbbbbbb\n",
-    "line11-bbbbbbb\n",
-    "line12-bbbbbbb\n",
-    "line13-bbbbbbb\n",
-    "line14-bbbbbbb\n",
-    "line15-bbbbbbb\n",
-    "line16-bbbbbbb\n",
-    "line17-bbbbbbb\n",
-    "line18-bbbbbbb\n",
-    "line19-bbbbbbb\n",
+    "line1-bbbbbbbb\r\n",
+    "line2-bbbbbbbb\r\n",
+    "line3-bbbbbbbb\r\n",
+    "line4-bbbbbbbb\r\n",
+    "line5-bbbbbbbb\r\n",
+    "line6-bbbbbbbb\r\n",
+    "line7-bbbbbbbb\r\n",
+    "line8-bbbbbbbb\r\n",
+    "line9-bbbbbbbb\r\n",
+    "line10-bbbbbbb\r\n",
+    "line11-bbbbbbb\r\n",
+    "line12-bbbbbbb\r\n",
+    "line13-bbbbbbb\r\n",
+    "line14-bbbbbbb\r\n",
+    "line15-bbbbbbb\r\n",
+    "line16-bbbbbbb\r\n",
+    "line17-bbbbbbb\r\n",
+    "line18-bbbbbbb\r\n",
+    "line19-bbbbbbb\r\n",
     "prompt $ ",
 ];
 
 pub const COL_15: [&str; 20] = [
-    "line1-bbbbbbbbb\n",
-    "line2-bbbbbbbbb\n",
-    "line3-bbbbbbbbb\n",
-    "line4-bbbbbbbbb\n",
-    "line5-bbbbbbbbb\n",
-    "line6-bbbbbbbbb\n",
-    "line7-bbbbbbbbb\n",
-    "line8-bbbbbbbbb\n",
-    "line9-bbbbbbbbb\n",
-    "line10-bbbbbbbb\n",
-    "line11-bbbbbbbb\n",
-    "line12-bbbbbbbb\n",
-    "line13-bbbbbbbb\n",
-    "line14-bbbbbbbb\n",
-    "line15-bbbbbbbb\n",
-    "line16-bbbbbbbb\n",
-    "line17-bbbbbbbb\n",
-    "line18-bbbbbbbb\n",
-    "line19-bbbbbbbb\n",
+    "line1-bbbbbbbbb\r\n",
+    "line2-bbbbbbbbb\r\n",
+    "line3-bbbbbbbbb\r\n",
+    "line4-bbbbbbbbb\r\n",
+    "line5-bbbbbbbbb\r\n",
+    "line6-bbbbbbbbb\r\n",
+    "line7-bbbbbbbbb\r\n",
+    "line8-bbbbbbbbb\r\n",
+    "line9-bbbbbbbbb\r\n",
+    "line10-bbbbbbbb\r\n",
+    "line11-bbbbbbbb\r\n",
+    "line12-bbbbbbbb\r\n",
+    "line13-bbbbbbbb\r\n",
+    "line14-bbbbbbbb\r\n",
+    "line15-bbbbbbbb\r\n",
+    "line16-bbbbbbbb\r\n",
+    "line17-bbbbbbbb\r\n",
+    "line18-bbbbbbbb\r\n",
+    "line19-bbbbbbbb\r\n",
     "prompt $ ",
 ];
 
 pub const COL_19: [&str; 20] = [
-    "line1-bbbbbbbbbbbbb\n",
-    "line2-bbbbbbbbbbbbb\n",
-    "line3-bbbbbbbbbbbbb\n",
-    "line4-bbbbbbbbbbbbb\n",
-    "line5-bbbbbbbbbbbbb\n",
-    "line6-bbbbbbbbbbbbb\n",
-    "line7-bbbbbbbbbbbbb\n",
-    "line8-bbbbbbbbbbbbb\n",
-    "line9-bbbbbbbbbbbbb\n",
-    "line10-bbbbbbbbbbbb\n",
-    "line11-bbbbbbbbbbbb\n",
-    "line12-bbbbbbbbbbbb\n",
-    "line13-bbbbbbbbbbbb\n",
-    "line14-bbbbbbbbbbbb\n",
-    "line15-bbbbbbbbbbbb\n",
-    "line16-bbbbbbbbbbbb\n",
-    "line17-bbbbbbbbbbbb\n",
-    "line18-bbbbbbbbbbbb\n",
-    "line19-bbbbbbbbbbbb\n",
+    "line1-bbbbbbbbbbbbb\r\n",
+    "line2-bbbbbbbbbbbbb\r\n",
+    "line3-bbbbbbbbbbbbb\r\n",
+    "line4-bbbbbbbbbbbbb\r\n",
+    "line5-bbbbbbbbbbbbb\r\n",
+    "line6-bbbbbbbbbbbbb\r\n",
+    "line7-bbbbbbbbbbbbb\r\n",
+    "line8-bbbbbbbbbbbbb\r\n",
+    "line9-bbbbbbbbbbbbb\r\n",
+    "line10-bbbbbbbbbbbb\r\n",
+    "line11-bbbbbbbbbbbb\r\n",
+    "line12-bbbbbbbbbbbb\r\n",
+    "line13-bbbbbbbbbbbb\r\n",
+    "line14-bbbbbbbbbbbb\r\n",
+    "line15-bbbbbbbbbbbb\r\n",
+    "line16-bbbbbbbbbbbb\r\n",
+    "line17-bbbbbbbbbbbb\r\n",
+    "line18-bbbbbbbbbbbb\r\n",
+    "line19-bbbbbbbbbbbb\r\n",
     "prompt $ ",
 ];
 
 pub const COL_20: [&str; 20] = [
-    "line1-bbbbbbbbbbbbbb\n",
-    "line2-bbbbbbbbbbbbbb\n",
-    "line3-bbbbbbbbbbbbbb\n",
-    "line4-bbbbbbbbbbbbbb\n",
-    "line5-bbbbbbbbbbbbbb\n",
-    "line6-bbbbbbbbbbbbbb\n",
-    "line7-bbbbbbbbbbbbbb\n",
-    "line8-bbbbbbbbbbbbbb\n",
-    "line9-bbbbbbbbbbbbbb\n",
-    "line10-bbbbbbbbbbbbb\n",
-    "line11-bbbbbbbbbbbbb\n",
-    "line12-bbbbbbbbbbbbb\n",
-    "line13-bbbbbbbbbbbbb\n",
-    "line14-bbbbbbbbbbbbb\n",
-    "line15-bbbbbbbbbbbbb\n",
-    "line16-bbbbbbbbbbbbb\n",
-    "line17-bbbbbbbbbbbbb\n",
-    "line18-bbbbbbbbbbbbb\n",
-    "line19-bbbbbbbbbbbbb\n",
+    "line1-bbbbbbbbbbbbbb\r\n",
+    "line2-bbbbbbbbbbbbbb\r\n",
+    "line3-bbbbbbbbbbbbbb\r\n",
+    "line4-bbbbbbbbbbbbbb\r\n",
+    "line5-bbbbbbbbbbbbbb\r\n",
+    "line6-bbbbbbbbbbbbbb\r\n",
+    "line7-bbbbbbbbbbbbbb\r\n",
+    "line8-bbbbbbbbbbbbbb\r\n",
+    "line9-bbbbbbbbbbbbbb\r\n",
+    "line10-bbbbbbbbbbbbb\r\n",
+    "line11-bbbbbbbbbbbbb\r\n",
+    "line12-bbbbbbbbbbbbb\r\n",
+    "line13-bbbbbbbbbbbbb\r\n",
+    "line14-bbbbbbbbbbbbb\r\n",
+    "line15-bbbbbbbbbbbbb\r\n",
+    "line16-bbbbbbbbbbbbb\r\n",
+    "line17-bbbbbbbbbbbbb\r\n",
+    "line18-bbbbbbbbbbbbb\r\n",
+    "line19-bbbbbbbbbbbbb\r\n",
     "prompt $ ",
 ];
 
 pub const COL_24: [&str; 20] = [
-    "line1-bbbbbbbbbbbbbbbbbb\n",
-    "line2-bbbbbbbbbbbbbbbbbb\n",
-    "line3-bbbbbbbbbbbbbbbbbb\n",
-    "line4-bbbbbbbbbbbbbbbbbb\n",
-    "line5-bbbbbbbbbbbbbbbbbb\n",
-    "line6-bbbbbbbbbbbbbbbbbb\n",
-    "line7-bbbbbbbbbbbbbbbbbb\n",
-    "line8-bbbbbbbbbbbbbbbbbb\n",
-    "line9-bbbbbbbbbbbbbbbbbb\n",
-    "line10-bbbbbbbbbbbbbbbbb\n",
-    "line11-bbbbbbbbbbbbbbbbb\n",
-    "line12-bbbbbbbbbbbbbbbbb\n",
-    "line13-bbbbbbbbbbbbbbbbb\n",
-    "line14-bbbbbbbbbbbbbbbbb\n",
-    "line15-bbbbbbbbbbbbbbbbb\n",
-    "line16-bbbbbbbbbbbbbbbbb\n",
-    "line17-bbbbbbbbbbbbbbbbb\n",
-    "line18-bbbbbbbbbbbbbbbbb\n",
-    "line19-bbbbbbbbbbbbbbbbb\n",
+    "line1-bbbbbbbbbbbbbbbbbb\r\n",
+    "line2-bbbbbbbbbbbbbbbbbb\r\n",
+    "line3-bbbbbbbbbbbbbbbbbb\r\n",
+    "line4-bbbbbbbbbbbbbbbbbb\r\n",
+    "line5-bbbbbbbbbbbbbbbbbb\r\n",
+    "line6-bbbbbbbbbbbbbbbbbb\r\n",
+    "line7-bbbbbbbbbbbbbbbbbb\r\n",
+    "line8-bbbbbbbbbbbbbbbbbb\r\n",
+    "line9-bbbbbbbbbbbbbbbbbb\r\n",
+    "line10-bbbbbbbbbbbbbbbbb\r\n",
+    "line11-bbbbbbbbbbbbbbbbb\r\n",
+    "line12-bbbbbbbbbbbbbbbbb\r\n",
+    "line13-bbbbbbbbbbbbbbbbb\r\n",
+    "line14-bbbbbbbbbbbbbbbbb\r\n",
+    "line15-bbbbbbbbbbbbbbbbb\r\n",
+    "line16-bbbbbbbbbbbbbbbbb\r\n",
+    "line17-bbbbbbbbbbbbbbbbb\r\n",
+    "line18-bbbbbbbbbbbbbbbbb\r\n",
+    "line19-bbbbbbbbbbbbbbbbb\r\n",
     "prompt $ ",
 ];
 pub const COL_29: [&str; 20] = [
-    "line1-bbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line2-bbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line3-bbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line4-bbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line5-bbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line6-bbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line7-bbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line8-bbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line9-bbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line10-bbbbbbbbbbbbbbbbbbbbbb\n",
-    "line11-bbbbbbbbbbbbbbbbbbbbbb\n",
-    "line12-bbbbbbbbbbbbbbbbbbbbbb\n",
-    "line13-bbbbbbbbbbbbbbbbbbbbbb\n",
-    "line14-bbbbbbbbbbbbbbbbbbbbbb\n",
-    "line15-bbbbbbbbbbbbbbbbbbbbbb\n",
-    "line16-bbbbbbbbbbbbbbbbbbbbbb\n",
-    "line17-bbbbbbbbbbbbbbbbbbbbbb\n",
-    "line18-bbbbbbbbbbbbbbbbbbbbbb\n",
-    "line19-bbbbbbbbbbbbbbbbbbbbbb\n",
+    "line1-bbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line2-bbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line3-bbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line4-bbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line5-bbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line6-bbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line7-bbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line8-bbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line9-bbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line10-bbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line11-bbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line12-bbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line13-bbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line14-bbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line15-bbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line16-bbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line17-bbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line18-bbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line19-bbbbbbbbbbbbbbbbbbbbbb\r\n",
     "prompt $ ",
 ];
 
 pub const COL_30: [&str; 20] = [
-    "line1-bbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line2-bbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line3-bbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line4-bbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line5-bbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line6-bbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line7-bbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line8-bbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line9-bbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line10-bbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line11-bbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line12-bbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line13-bbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line14-bbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line15-bbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line16-bbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line17-bbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line18-bbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line19-bbbbbbbbbbbbbbbbbbbbbbb\n",
+    "line1-bbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line2-bbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line3-bbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line4-bbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line5-bbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line6-bbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line7-bbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line8-bbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line9-bbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line10-bbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line11-bbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line12-bbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line13-bbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line14-bbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line15-bbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line16-bbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line17-bbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line18-bbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line19-bbbbbbbbbbbbbbbbbbbbbbb\r\n",
     "prompt $ ",
 ];
 
 pub const COL_34: [&str; 20] = [
-    "line1-bbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line2-bbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line3-bbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line4-bbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line5-bbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line6-bbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line7-bbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line8-bbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line9-bbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line10-bbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line11-bbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line12-bbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line13-bbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line14-bbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line15-bbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line16-bbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line17-bbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line18-bbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line19-bbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
+    "line1-bbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line2-bbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line3-bbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line4-bbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line5-bbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line6-bbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line7-bbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line8-bbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line9-bbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line10-bbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line11-bbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line12-bbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line13-bbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line14-bbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line15-bbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line16-bbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line17-bbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line18-bbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line19-bbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
     "prompt $ ",
 ];
 
 pub const COL_40: [&str; 20] = [
-    "line1-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line2-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line3-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line4-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line5-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line6-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line7-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line8-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line9-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line10-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line11-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line12-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line13-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line14-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line15-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line16-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line17-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line18-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line19-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
+    "line1-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line2-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line3-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line4-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line5-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line6-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line7-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line8-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line9-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line10-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line11-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line12-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line13-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line14-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line15-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line16-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line17-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line18-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line19-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
     "prompt $ ",
 ];
 
 pub const COL_39: [&str; 20] = [
-    "line1-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line2-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line3-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line4-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line5-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line6-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line7-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line8-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line9-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line10-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line11-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line12-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line13-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line14-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line15-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line16-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line17-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line18-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line19-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
+    "line1-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line2-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line3-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line4-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line5-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line6-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line7-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line8-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line9-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line10-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line11-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line12-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line13-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line14-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line15-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line16-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line17-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line18-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line19-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
     "prompt $ ",
 ];
 
 pub const COL_50: [&str; 20] = [
-    "line1-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line2-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line3-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line4-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line5-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line6-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line7-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line8-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line9-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line10-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line11-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line12-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line13-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line14-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line15-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line16-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line17-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line18-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line19-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
+    "line1-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line2-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line3-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line4-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line5-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line6-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line7-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line8-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line9-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line10-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line11-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line12-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line13-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line14-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line15-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line16-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line17-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line18-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line19-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
     "prompt $ ",
 ];
 
 pub const COL_60: [&str; 20] = [
-    "line1-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line2-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line3-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line4-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line5-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line6-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line7-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line8-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line9-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line10-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line11-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line12-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line13-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line14-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line15-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line16-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line17-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line18-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line19-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
+    "line1-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line2-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line3-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line4-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line5-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line6-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line7-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line8-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line9-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line10-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line11-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line12-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line13-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line14-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line15-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line16-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line17-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line18-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line19-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
     "prompt $ ",
 ];
 
 pub const COL_70: [&str; 20] = [
-    "line1-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line2-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line3-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line4-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line5-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line6-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line7-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line8-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line9-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line10-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line11-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line12-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line13-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line14-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line15-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line16-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line17-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line18-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line19-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
+    "line1-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line2-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line3-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line4-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line5-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line6-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line7-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line8-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line9-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line10-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line11-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line12-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line13-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line14-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line15-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line16-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line17-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line18-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line19-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
     "prompt $ ",
 ];
 
 pub const COL_90: [&str; 20] = [
-    "line1-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line2-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line3-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line4-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line5-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line6-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line7-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line8-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line9-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line10-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line11-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line12-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line13-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line14-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line15-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line16-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line17-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line18-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line19-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
+    "line1-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line2-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line3-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line4-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line5-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line6-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line7-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line8-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line9-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line10-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line11-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line12-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line13-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line14-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line15-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line16-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line17-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line18-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line19-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
     "prompt $ ",
 ];
 
 pub const COL_96: [&str; 20] = [
-    "line1-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line2-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line3-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line4-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line5-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line6-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line7-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line8-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line9-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line10-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line11-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line12-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line13-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line14-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line15-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line16-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line17-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line18-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
-    "line19-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n",
+    "line1-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line2-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line3-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line4-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line5-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line6-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line7-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line8-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line9-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line10-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line11-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line12-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line13-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line14-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line15-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line16-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line17-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line18-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line19-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
     "prompt $ ",
 ];