* fix(ui): react to terminal window size changes (SIGWINCH) (#245)

* fix(ui): react to terminal window size changes (SIGWINCH)

* style(fmt): rustfmt

* style(format): remove some warnings

* style(fmt): rustfmt

Cargo.lock

@@ -130,7 +130,7 @@ dependencies = [
  "event-listener",
  "futures-lite",
  "once_cell",
- "signal-hook 0.3.6",
+ "signal-hook",
  "winapi",
 ]
 
@@ -1414,16 +1414,6 @@ dependencies = [
  "yaml-rust",
 ]
 
-[[package]]
-name = "signal-hook"
-version = "0.1.17"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7e31d442c16f047a671b5a71e2161d6e68814012b7f5379d269ebd915fac2729"
-dependencies = [
- "libc",
- "signal-hook-registry",
-]
-
 [[package]]
 name = "signal-hook"
 version = "0.3.6"
@@ -2259,7 +2249,7 @@ dependencies = [
  "serde",
  "serde_json",
  "serde_yaml",
- "signal-hook 0.1.17",
+ "signal-hook",
  "strip-ansi-escapes",
  "structopt",
  "strum",

Cargo.toml

@@ -24,7 +24,7 @@ nom = "6.0.1"
 serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0"
 serde_yaml = "0.8"
-signal-hook = "0.1.10"
+signal-hook = "0.3"
 strip-ansi-escapes = "0.1.0"
 structopt = "0.3"
 termion = "1.5.0"

default-tiles/status-bar/src/first_line.rs

@@ -99,7 +99,7 @@ fn unselected_mode_shortcut(letter: char, text: &str) -> LinePart {
             suffix_separator,
         ])
         .to_string(),
-        len: text.chars().count() + 6, // 2 for the arrows, 3 for the char separators, 1 for the character
+        len: text.chars().count() + 7, // 2 for the arrows, 3 for the char separators, 1 for the character, 1 for the text padding
     }
 }
 
@@ -129,7 +129,7 @@ fn selected_mode_shortcut(letter: char, text: &str) -> LinePart {
             suffix_separator,
         ])
         .to_string(),
-        len: text.chars().count() + 6, // 2 for the arrows, 3 for the char separators, 1 for the character
+        len: text.chars().count() + 7, // 2 for the arrows, 3 for the char separators, 1 for the character, 1 for the text padding
     }
 }
 

src/client/mod.rs

@@ -1,5 +1,6 @@
 pub mod boundaries;
 pub mod layout;
+pub mod pane_resizer;
 pub mod panes;
 pub mod tab;
 

src/client/pane_resizer.rs

@@ -0,0 +1,508 @@
+use crate::os_input_output::OsApi;
+use crate::panes::{PaneId, PositionAndSize};
+use crate::tab::Pane;
+use std::collections::{BTreeMap, HashSet};
+
+pub struct PaneResizer<'a> {
+    panes: &'a mut BTreeMap<PaneId, Box<dyn Pane>>,
+    os_api: &'a mut Box<dyn OsApi>,
+}
+
+// TODO: currently there are some functions here duplicated with Tab
+// the reason for this is that we need to get rid of the expansion_boundary
+// otherwise we'll have a big separation of concerns issue
+// once that is done, all resizing functions should move here
+
+impl<'a> PaneResizer<'a> {
+    pub fn new(
+        panes: &'a mut BTreeMap<PaneId, Box<dyn Pane>>,
+        os_api: &'a mut Box<dyn OsApi>,
+    ) -> Self {
+        PaneResizer { panes, os_api }
+    }
+    pub fn resize(
+        &mut self,
+        mut current_size: PositionAndSize,
+        new_size: PositionAndSize,
+    ) -> Option<(isize, isize)> {
+        // (column_difference, row_difference)
+        let mut successfully_resized = false;
+        let mut column_difference: isize = 0;
+        let mut row_difference: isize = 0;
+        if new_size.columns < current_size.columns {
+            let reduce_by = current_size.columns - new_size.columns;
+            find_reducible_vertical_chain(
+                &self.panes,
+                reduce_by,
+                current_size.columns,
+                current_size.rows,
+            )
+            .map(|panes_to_resize| {
+                self.reduce_panes_left_and_pull_adjacents_left(panes_to_resize, reduce_by);
+                column_difference = new_size.columns as isize - current_size.columns as isize;
+                current_size.columns = (current_size.columns as isize + column_difference) as usize;
+                successfully_resized = true;
+            });
+        } else if new_size.columns > current_size.columns {
+            let increase_by = new_size.columns - current_size.columns;
+            find_increasable_vertical_chain(
+                &self.panes,
+                increase_by,
+                current_size.columns,
+                current_size.rows,
+            )
+            .map(|panes_to_resize| {
+                self.increase_panes_right_and_push_adjacents_right(panes_to_resize, increase_by);
+                column_difference = new_size.columns as isize - current_size.columns as isize;
+                current_size.columns = (current_size.columns as isize + column_difference) as usize;
+                successfully_resized = true;
+            });
+        }
+        if new_size.rows < current_size.rows {
+            let reduce_by = current_size.rows - new_size.rows;
+            find_reducible_horizontal_chain(
+                &self.panes,
+                reduce_by,
+                current_size.columns,
+                current_size.rows,
+            )
+            .map(|panes_to_resize| {
+                self.reduce_panes_up_and_pull_adjacents_up(panes_to_resize, reduce_by);
+                row_difference = new_size.rows as isize - current_size.rows as isize;
+                current_size.rows = (current_size.rows as isize + row_difference) as usize;
+                successfully_resized = true;
+            });
+        } else if new_size.rows > current_size.rows {
+            let increase_by = new_size.rows - current_size.rows;
+            find_increasable_horizontal_chain(
+                &self.panes,
+                increase_by,
+                current_size.columns,
+                current_size.rows,
+            )
+            .map(|panes_to_resize| {
+                self.increase_panes_down_and_push_down_adjacents(panes_to_resize, increase_by);
+                row_difference = new_size.rows as isize - current_size.rows as isize;
+                current_size.rows = (current_size.rows as isize + row_difference) as usize;
+                successfully_resized = true;
+            });
+        }
+        if successfully_resized {
+            Some((column_difference, row_difference))
+        } else {
+            None
+        }
+    }
+    fn reduce_panes_left_and_pull_adjacents_left(
+        &mut self,
+        panes_to_reduce: Vec<PaneId>,
+        reduce_by: usize,
+    ) {
+        let mut pulled_panes: HashSet<PaneId> = HashSet::new();
+        for pane_id in panes_to_reduce {
+            let (pane_x, pane_y, pane_columns, pane_rows) = {
+                let pane = self.panes.get(&pane_id).unwrap();
+                (pane.x(), pane.y(), pane.columns(), pane.rows())
+            };
+            let panes_to_pull = self.panes.values_mut().filter(|p| {
+                p.x() > pane_x + pane_columns
+                    && (p.y() <= pane_y && p.y() + p.rows() >= pane_y
+                        || p.y() >= pane_y && p.y() + p.rows() <= pane_y + pane_rows)
+            });
+            for pane in panes_to_pull {
+                if !pulled_panes.contains(&pane.pid()) {
+                    pane.pull_left(reduce_by);
+                    pulled_panes.insert(pane.pid());
+                }
+            }
+            self.reduce_pane_width_left(&pane_id, reduce_by);
+        }
+    }
+    fn reduce_panes_up_and_pull_adjacents_up(
+        &mut self,
+        panes_to_reduce: Vec<PaneId>,
+        reduce_by: usize,
+    ) {
+        let mut pulled_panes: HashSet<PaneId> = HashSet::new();
+        for pane_id in panes_to_reduce {
+            let (pane_x, pane_y, pane_columns, pane_rows) = {
+                let pane = self.panes.get(&pane_id).unwrap();
+                (pane.x(), pane.y(), pane.columns(), pane.rows())
+            };
+            let panes_to_pull = self.panes.values_mut().filter(|p| {
+                p.y() > pane_y + pane_rows
+                    && (p.x() <= pane_x && p.x() + p.columns() >= pane_x
+                        || p.x() >= pane_x && p.x() + p.columns() <= pane_x + pane_columns)
+            });
+            for pane in panes_to_pull {
+                if !pulled_panes.contains(&pane.pid()) {
+                    pane.pull_up(reduce_by);
+                    pulled_panes.insert(pane.pid());
+                }
+            }
+            self.reduce_pane_height_up(&pane_id, reduce_by);
+        }
+    }
+    fn increase_panes_down_and_push_down_adjacents(
+        &mut self,
+        panes_to_increase: Vec<PaneId>,
+        increase_by: usize,
+    ) {
+        let mut pushed_panes: HashSet<PaneId> = HashSet::new();
+        for pane_id in panes_to_increase {
+            let (pane_x, pane_y, pane_columns, pane_rows) = {
+                let pane = self.panes.get(&pane_id).unwrap();
+                (pane.x(), pane.y(), pane.columns(), pane.rows())
+            };
+            let panes_to_push = self.panes.values_mut().filter(|p| {
+                p.y() > pane_y + pane_rows
+                    && (p.x() <= pane_x && p.x() + p.columns() >= pane_x
+                        || p.x() >= pane_x && p.x() + p.columns() <= pane_x + pane_columns)
+            });
+            for pane in panes_to_push {
+                if !pushed_panes.contains(&pane.pid()) {
+                    pane.push_down(increase_by);
+                    pushed_panes.insert(pane.pid());
+                }
+            }
+            self.increase_pane_height_down(&pane_id, increase_by);
+        }
+    }
+    fn increase_panes_right_and_push_adjacents_right(
+        &mut self,
+        panes_to_increase: Vec<PaneId>,
+        increase_by: usize,
+    ) {
+        let mut pushed_panes: HashSet<PaneId> = HashSet::new();
+        for pane_id in panes_to_increase {
+            let (pane_x, pane_y, pane_columns, pane_rows) = {
+                let pane = self.panes.get(&pane_id).unwrap();
+                (pane.x(), pane.y(), pane.columns(), pane.rows())
+            };
+            let panes_to_push = self.panes.values_mut().filter(|p| {
+                p.x() > pane_x + pane_columns
+                    && (p.y() <= pane_y && p.y() + p.rows() >= pane_y
+                        || p.y() >= pane_y && p.y() + p.rows() <= pane_y + pane_rows)
+            });
+            for pane in panes_to_push {
+                if !pushed_panes.contains(&pane.pid()) {
+                    pane.push_right(increase_by);
+                    pushed_panes.insert(pane.pid());
+                }
+            }
+            self.increase_pane_width_right(&pane_id, increase_by);
+        }
+    }
+    fn reduce_pane_height_up(&mut self, id: &PaneId, count: usize) {
+        let pane = self.panes.get_mut(id).unwrap();
+        pane.reduce_height_up(count);
+        if let PaneId::Terminal(pid) = id {
+            self.os_api
+                .set_terminal_size_using_fd(*pid, pane.columns() as u16, pane.rows() as u16);
+        }
+    }
+    fn increase_pane_height_down(&mut self, id: &PaneId, count: usize) {
+        let pane = self.panes.get_mut(id).unwrap();
+        pane.increase_height_down(count);
+        if let PaneId::Terminal(pid) = pane.pid() {
+            self.os_api
+                .set_terminal_size_using_fd(pid, pane.columns() as u16, pane.rows() as u16);
+        }
+    }
+    fn increase_pane_width_right(&mut self, id: &PaneId, count: usize) {
+        let pane = self.panes.get_mut(id).unwrap();
+        pane.increase_width_right(count);
+        if let PaneId::Terminal(pid) = pane.pid() {
+            self.os_api
+                .set_terminal_size_using_fd(pid, pane.columns() as u16, pane.rows() as u16);
+        }
+    }
+    fn reduce_pane_width_left(&mut self, id: &PaneId, count: usize) {
+        let pane = self.panes.get_mut(id).unwrap();
+        pane.reduce_width_left(count);
+        if let PaneId::Terminal(pid) = pane.pid() {
+            self.os_api
+                .set_terminal_size_using_fd(pid, pane.columns() as u16, pane.rows() as u16);
+        }
+    }
+}
+
+fn find_next_increasable_horizontal_pane(
+    panes: &BTreeMap<PaneId, Box<dyn Pane>>,
+    right_of: &Box<dyn Pane>,
+    increase_by: usize,
+) -> Option<PaneId> {
+    let next_pane_candidates = panes.values().filter(
+        |p| {
+            p.x() == right_of.x() + right_of.columns() + 1
+                && p.horizontally_overlaps_with(right_of.as_ref())
+        }, // TODO: the name here is wrong, it should be vertically_overlaps_with
+    );
+    let resizable_candidates =
+        next_pane_candidates.filter(|p| p.can_increase_height_by(increase_by));
+    resizable_candidates.fold(None, |next_pane_id, p| match next_pane_id {
+        Some(next_pane) => {
+            let next_pane = panes.get(&next_pane).unwrap();
+            if next_pane.y() < p.y() {
+                next_pane_id
+            } else {
+                Some(p.pid())
+            }
+        }
+        None => Some(p.pid()),
+    })
+}
+
+fn find_next_increasable_vertical_pane(
+    panes: &BTreeMap<PaneId, Box<dyn Pane>>,
+    below: &Box<dyn Pane>,
+    increase_by: usize,
+) -> Option<PaneId> {
+    let next_pane_candidates = panes.values().filter(
+        |p| p.y() == below.y() + below.rows() + 1 && p.vertically_overlaps_with(below.as_ref()), // TODO: the name here is wrong, it should be horizontally_overlaps_with
+    );
+    let resizable_candidates =
+        next_pane_candidates.filter(|p| p.can_increase_width_by(increase_by));
+    resizable_candidates.fold(None, |next_pane_id, p| match next_pane_id {
+        Some(next_pane) => {
+            let next_pane = panes.get(&next_pane).unwrap();
+            if next_pane.x() < p.x() {
+                next_pane_id
+            } else {
+                Some(p.pid())
+            }
+        }
+        None => Some(p.pid()),
+    })
+}
+
+fn find_next_reducible_vertical_pane(
+    panes: &BTreeMap<PaneId, Box<dyn Pane>>,
+    below: &Box<dyn Pane>,
+    reduce_by: usize,
+) -> Option<PaneId> {
+    let next_pane_candidates = panes.values().filter(
+        |p| p.y() == below.y() + below.rows() + 1 && p.vertically_overlaps_with(below.as_ref()), // TODO: the name here is wrong, it should be horizontally_overlaps_with
+    );
+    let resizable_candidates = next_pane_candidates.filter(|p| p.can_reduce_width_by(reduce_by));
+    resizable_candidates.fold(None, |next_pane_id, p| match next_pane_id {
+        Some(next_pane) => {
+            let next_pane = panes.get(&next_pane).unwrap();
+            if next_pane.x() < p.x() {
+                next_pane_id
+            } else {
+                Some(p.pid())
+            }
+        }
+        None => Some(p.pid()),
+    })
+}
+
+fn find_next_reducible_horizontal_pane(
+    panes: &BTreeMap<PaneId, Box<dyn Pane>>,
+    right_of: &Box<dyn Pane>,
+    reduce_by: usize,
+) -> Option<PaneId> {
+    let next_pane_candidates = panes.values().filter(
+        |p| {
+            p.x() == right_of.x() + right_of.columns() + 1
+                && p.horizontally_overlaps_with(right_of.as_ref())
+        }, // TODO: the name here is wrong, it should be vertically_overlaps_with
+    );
+    let resizable_candidates = next_pane_candidates.filter(|p| p.can_reduce_height_by(reduce_by));
+    resizable_candidates.fold(None, |next_pane_id, p| match next_pane_id {
+        Some(next_pane) => {
+            let next_pane = panes.get(&next_pane).unwrap();
+            if next_pane.y() < p.y() {
+                next_pane_id
+            } else {
+                Some(p.pid())
+            }
+        }
+        None => Some(p.pid()),
+    })
+}
+
+fn find_increasable_horizontal_chain(
+    panes: &BTreeMap<PaneId, Box<dyn Pane>>,
+    increase_by: usize,
+    screen_width: usize,
+    screen_height: usize, // TODO: this is the previous size (make this clearer)
+) -> Option<Vec<PaneId>> {
+    let mut horizontal_coordinate = 0;
+    loop {
+        if horizontal_coordinate == screen_height {
+            return None;
+        }
+
+        match panes
+            .values()
+            .find(|p| p.x() == 0 && p.y() == horizontal_coordinate)
+        {
+            Some(leftmost_pane) => {
+                if !leftmost_pane.can_increase_height_by(increase_by) {
+                    horizontal_coordinate = leftmost_pane.y() + leftmost_pane.rows() + 1;
+                    continue;
+                }
+                let mut panes_to_resize = vec![];
+                let mut current_pane = leftmost_pane;
+                loop {
+                    panes_to_resize.push(current_pane.pid());
+                    if current_pane.x() + current_pane.columns() == screen_width {
+                        return Some(panes_to_resize);
+                    }
+                    match find_next_increasable_horizontal_pane(panes, &current_pane, increase_by) {
+                        Some(next_pane_id) => {
+                            current_pane = panes.get(&next_pane_id).unwrap();
+                        }
+                        None => {
+                            horizontal_coordinate = leftmost_pane.y() + leftmost_pane.rows() + 1;
+                            break;
+                        }
+                    };
+                }
+            }
+            None => {
+                return None;
+            }
+        }
+    }
+}
+
+fn find_increasable_vertical_chain(
+    panes: &BTreeMap<PaneId, Box<dyn Pane>>,
+    increase_by: usize,
+    screen_width: usize,
+    screen_height: usize, // TODO: this is the previous size (make this clearer)
+) -> Option<Vec<PaneId>> {
+    let mut vertical_coordinate = 0;
+    loop {
+        if vertical_coordinate == screen_width {
+            return None;
+        }
+
+        match panes
+            .values()
+            .find(|p| p.y() == 0 && p.x() == vertical_coordinate)
+        {
+            Some(topmost_pane) => {
+                if !topmost_pane.can_increase_width_by(increase_by) {
+                    vertical_coordinate = topmost_pane.x() + topmost_pane.columns() + 1;
+                    continue;
+                }
+                let mut panes_to_resize = vec![];
+                let mut current_pane = topmost_pane;
+                loop {
+                    panes_to_resize.push(current_pane.pid());
+                    if current_pane.y() + current_pane.rows() == screen_height {
+                        return Some(panes_to_resize);
+                    }
+                    match find_next_increasable_vertical_pane(panes, &current_pane, increase_by) {
+                        Some(next_pane_id) => {
+                            current_pane = panes.get(&next_pane_id).unwrap();
+                        }
+                        None => {
+                            vertical_coordinate = topmost_pane.x() + topmost_pane.columns() + 1;
+                            break;
+                        }
+                    };
+                }
+            }
+            None => {
+                return None;
+            }
+        }
+    }
+}
+
+fn find_reducible_horizontal_chain(
+    panes: &BTreeMap<PaneId, Box<dyn Pane>>,
+    reduce_by: usize,
+    screen_width: usize,
+    screen_height: usize, // TODO: this is the previous size (make this clearer)
+) -> Option<Vec<PaneId>> {
+    let mut horizontal_coordinate = 0;
+    loop {
+        if horizontal_coordinate == screen_height {
+            return None;
+        }
+
+        match panes
+            .values()
+            .find(|p| p.x() == 0 && p.y() == horizontal_coordinate)
+        {
+            Some(leftmost_pane) => {
+                if !leftmost_pane.can_reduce_height_by(reduce_by) {
+                    horizontal_coordinate = leftmost_pane.y() + leftmost_pane.rows() + 1;
+                    continue;
+                }
+                let mut panes_to_resize = vec![];
+                let mut current_pane = leftmost_pane;
+                loop {
+                    panes_to_resize.push(current_pane.pid());
+                    if current_pane.x() + current_pane.columns() == screen_width {
+                        return Some(panes_to_resize);
+                    }
+                    match find_next_reducible_horizontal_pane(panes, &current_pane, reduce_by) {
+                        Some(next_pane_id) => {
+                            current_pane = panes.get(&next_pane_id).unwrap();
+                        }
+                        None => {
+                            horizontal_coordinate = leftmost_pane.y() + leftmost_pane.rows() + 1;
+                            break;
+                        }
+                    };
+                }
+            }
+            None => {
+                return None;
+            }
+        }
+    }
+}
+
+fn find_reducible_vertical_chain(
+    panes: &BTreeMap<PaneId, Box<dyn Pane>>,
+    increase_by: usize,
+    screen_width: usize,
+    screen_height: usize, // TODO: this is the previous size (make this clearer)
+) -> Option<Vec<PaneId>> {
+    let mut vertical_coordinate = 0;
+    loop {
+        if vertical_coordinate == screen_width {
+            return None;
+        }
+
+        match panes
+            .values()
+            .find(|p| p.y() == 0 && p.x() == vertical_coordinate)
+        {
+            Some(topmost_pane) => {
+                if !topmost_pane.can_reduce_width_by(increase_by) {
+                    vertical_coordinate = topmost_pane.x() + topmost_pane.columns() + 1;
+                    continue;
+                }
+                let mut panes_to_resize = vec![];
+                let mut current_pane = topmost_pane;
+                loop {
+                    panes_to_resize.push(current_pane.pid());
+                    if current_pane.y() + current_pane.rows() == screen_height {
+                        return Some(panes_to_resize);
+                    }
+                    match find_next_reducible_vertical_pane(panes, &current_pane, increase_by) {
+                        Some(next_pane_id) => {
+                            current_pane = panes.get(&next_pane_id).unwrap();
+                        }
+                        None => {
+                            vertical_coordinate = topmost_pane.x() + topmost_pane.columns() + 1;
+                            break;
+                        }
+                    };
+                }
+            }
+            None => {
+                return None;
+            }
+        }
+    }
+}

src/client/panes/plugin_pane.rs

@@ -173,6 +173,18 @@ impl Pane for PluginPane {
         self.position_and_size.columns += count;
         self.should_render = true;
     }
+    fn push_down(&mut self, count: usize) {
+        self.position_and_size.y += count;
+    }
+    fn push_right(&mut self, count: usize) {
+        self.position_and_size.x += count;
+    }
+    fn pull_left(&mut self, count: usize) {
+        self.position_and_size.x -= count;
+    }
+    fn pull_up(&mut self, count: usize) {
+        self.position_and_size.y -= count;
+    }
     fn scroll_up(&mut self, _count: usize) {
         unimplemented!()
     }

src/client/panes/terminal_pane.rs

@@ -282,6 +282,18 @@ impl Pane for TerminalPane {
         self.position_and_size.columns += count;
         self.reflow_lines();
     }
+    fn push_down(&mut self, count: usize) {
+        self.position_and_size.y += count;
+    }
+    fn push_right(&mut self, count: usize) {
+        self.position_and_size.x += count;
+    }
+    fn pull_left(&mut self, count: usize) {
+        self.position_and_size.x -= count;
+    }
+    fn pull_up(&mut self, count: usize) {
+        self.position_and_size.y -= count;
+    }
     fn scroll_up(&mut self, count: usize) {
         self.grid.move_viewport_up(count);
         self.mark_for_rerender();

src/client/tab.rs

@@ -2,13 +2,16 @@
 //! as well as how they should be resized
 
 use crate::boundaries::colors;
+use crate::client::pane_resizer::PaneResizer;
 use crate::common::{input::handler::parse_keys, AppInstruction, SenderWithContext};
 use crate::layout::Layout;
+use crate::os_input_output::OsApi;
 use crate::panes::{PaneId, PositionAndSize, TerminalPane};
 use crate::pty_bus::{PtyInstruction, VteEvent};
+use crate::utils::shared::adjust_to_size;
 use crate::wasm_vm::PluginInstruction;
 use crate::{boundaries::Boundaries, panes::PluginPane};
-use crate::{os_input_output::OsApi, utils::shared::pad_to_size};
+use serde::{Deserialize, Serialize};
 use std::os::unix::io::RawFd;
 use std::{
     cmp::Reverse,
@@ -66,6 +69,16 @@ pub struct Tab {
     pub send_plugin_instructions: SenderWithContext<PluginInstruction>,
     pub send_app_instructions: SenderWithContext<AppInstruction>,
     expansion_boundary: Option<PositionAndSize>,
+    should_clear_display_before_rendering: bool,
+    pub mode_info: ModeInfo,
+}
+
+#[derive(Clone, Debug, Default, Serialize, Deserialize)]
+pub struct TabData {
+    /* subset of fields to publish to plugins */
+    pub position: usize,
+    pub name: String,
+    pub active: bool,
     pub mode_info: ModeInfo,
 }
 
@@ -99,6 +112,10 @@ pub trait Pane {
     fn reduce_width_right(&mut self, count: usize);
     fn reduce_width_left(&mut self, count: usize);
     fn increase_width_left(&mut self, count: usize);
+    fn push_down(&mut self, count: usize);
+    fn push_right(&mut self, count: usize);
+    fn pull_left(&mut self, count: usize);
+    fn pull_up(&mut self, count: usize);
     fn scroll_up(&mut self, count: usize);
     fn scroll_down(&mut self, count: usize);
     fn clear_scroll(&mut self);
@@ -153,6 +170,22 @@ pub trait Pane {
             rows: self.rows(),
         }
     }
+    fn can_increase_height_by(&self, increase_by: usize) -> bool {
+        self.max_height()
+            .map(|max_height| self.rows() + increase_by <= max_height)
+            .unwrap_or(true)
+    }
+    fn can_increase_width_by(&self, increase_by: usize) -> bool {
+        self.max_width()
+            .map(|max_width| self.columns() + increase_by <= max_width)
+            .unwrap_or(true)
+    }
+    fn can_reduce_height_by(&self, reduce_by: usize) -> bool {
+        self.rows() > reduce_by && self.rows() - reduce_by >= self.min_height()
+    }
+    fn can_reduce_width_by(&self, reduce_by: usize) -> bool {
+        self.columns() > reduce_by && self.columns() - reduce_by >= self.min_width()
+    }
     fn min_width(&self) -> usize {
         MIN_TERMINAL_WIDTH
     }
@@ -213,6 +246,7 @@ impl Tab {
             send_pty_instructions,
             send_plugin_instructions,
             expansion_boundary: None,
+            should_clear_display_before_rendering: false,
             mode_info,
         }
     }
@@ -630,28 +664,33 @@ impl Tab {
         stdout
             .write_all(&hide_cursor.as_bytes())
             .expect("cannot write to stdout");
-        for (kind, terminal) in self.panes.iter_mut() {
+        if self.should_clear_display_before_rendering {
-            if !self.panes_to_hide.contains(&terminal.pid()) {
+            let clear_display = "\u{1b}[2J";
-                match self.active_terminal.unwrap() == terminal.pid() {
+            stdout
-                    true => boundaries.add_rect(
+                .write_all(&clear_display.as_bytes())
-                        terminal.as_ref(),
+                .expect("cannot write to stdout");
-                        self.mode_info.mode,
+            self.should_clear_display_before_rendering = false;
-                        Some(colors::GREEN),
-                    ),
-                    false => boundaries.add_rect(terminal.as_ref(), self.mode_info.mode, None),
         }
-                if let Some(vte_output) = terminal.render() {
+        for (kind, pane) in self.panes.iter_mut() {
+            if !self.panes_to_hide.contains(&pane.pid()) {
+                match self.active_terminal.unwrap() == pane.pid() {
+                    true => {
+                        boundaries.add_rect(pane.as_ref(), self.mode_info.mode, Some(colors::GREEN))
+                    }
+                    false => boundaries.add_rect(pane.as_ref(), self.mode_info.mode, None),
+                }
+                if let Some(vte_output) = pane.render() {
                     let vte_output = if let PaneId::Terminal(_) = kind {
                         vte_output
                     } else {
-                        pad_to_size(&vte_output, terminal.rows(), terminal.columns())
+                        adjust_to_size(&vte_output, pane.rows(), pane.columns())
                     };
                     // FIXME: Use Termion for cursor and style clearing?
                     write!(
                         stdout,
                         "\u{1b}[{};{}H\u{1b}[m{}",
-                        terminal.y() + 1,
+                        pane.y() + 1,
-                        terminal.x() + 1,
+                        pane.x() + 1,
                         vte_output
                     )
                     .expect("cannot write to stdout");
@@ -1664,17 +1703,30 @@ impl Tab {
             false
         }
     }
-    pub fn resize_right(&mut self) {
+    pub fn resize_whole_tab(&mut self, new_screen_size: PositionAndSize) {
-        // TODO: find out by how much we actually reduced and only reduce by that much
+        if self.fullscreen_is_active {
-        let count = 10;
+            // this is not ideal but until we get rid of expansion_boundary, it's a necessity
-        if let Some(active_pane_id) = self.get_active_pane_id() {
+            self.toggle_active_pane_fullscreen();
-            if self.can_increase_pane_and_surroundings_right(&active_pane_id, count) {
-                self.increase_pane_and_surroundings_right(&active_pane_id, count);
-            } else if self.can_reduce_pane_and_surroundings_right(&active_pane_id, count) {
-                self.reduce_pane_and_surroundings_right(&active_pane_id, count);
         }
+        match PaneResizer::new(&mut self.panes, &mut self.os_api)
+            .resize(self.full_screen_ws, new_screen_size)
+        {
+            Some((column_difference, row_difference)) => {
+                self.should_clear_display_before_rendering = true;
+                self.expansion_boundary.as_mut().map(|expansion_boundary| {
+                    // TODO: this is not always accurate
+                    expansion_boundary.columns =
+                        (expansion_boundary.columns as isize + column_difference) as usize;
+                    expansion_boundary.rows =
+                        (expansion_boundary.rows as isize + row_difference) as usize;
+                });
+                self.full_screen_ws.columns =
+                    (self.full_screen_ws.columns as isize + column_difference) as usize;
+                self.full_screen_ws.rows =
+                    (self.full_screen_ws.rows as isize + row_difference) as usize;
             }
-        self.render();
+            None => {}
+        };
     }
     pub fn resize_left(&mut self) {
         // TODO: find out by how much we actually reduced and only reduce by that much
@@ -1688,6 +1740,18 @@ impl Tab {
         }
         self.render();
     }
+    pub fn resize_right(&mut self) {
+        // TODO: find out by how much we actually reduced and only reduce by that much
+        let count = 10;
+        if let Some(active_pane_id) = self.get_active_pane_id() {
+            if self.can_increase_pane_and_surroundings_right(&active_pane_id, count) {
+                self.increase_pane_and_surroundings_right(&active_pane_id, count);
+            } else if self.can_reduce_pane_and_surroundings_right(&active_pane_id, count) {
+                self.reduce_pane_and_surroundings_right(&active_pane_id, count);
+            }
+        }
+        self.render();
+    }
     pub fn resize_down(&mut self) {
         // TODO: find out by how much we actually reduced and only reduce by that much
         let count = 2;

src/common/errors.rs

@@ -42,7 +42,7 @@ pub fn handle_panic(
             msg,
             location.file(),
             location.line(),
-            backtrace
+            backtrace,
         ),
         (Some(location), None) => format!(
             "{}\n\u{1b}[0;0mError: \u{1b}[0;31mthread '{}' panicked: {}:{}\n\u{1b}[0;0m{:?}",
@@ -200,6 +200,7 @@ pub enum ScreenContext {
     CloseTab,
     GoToTab,
     UpdateTabName,
+    TerminalResize,
     ChangeMode,
 }
 
@@ -241,6 +242,7 @@ impl From<&ScreenInstruction> for ScreenContext {
             ScreenInstruction::CloseTab => ScreenContext::CloseTab,
             ScreenInstruction::GoToTab(_) => ScreenContext::GoToTab,
             ScreenInstruction::UpdateTabName(_) => ScreenContext::UpdateTabName,
+            ScreenInstruction::TerminalResize => ScreenContext::TerminalResize,
             ScreenInstruction::ChangeMode(_) => ScreenContext::ChangeMode,
         }
     }

src/common/mod.rs

@@ -389,6 +389,9 @@ pub fn start(mut os_input: Box<dyn OsApi>, opts: CliArgs) {
                         ScreenInstruction::UpdateTabName(c) => {
                             screen.update_active_tab_name(c);
                         }
+                        ScreenInstruction::TerminalResize => {
+                            screen.resize_to_screen();
+                        }
                         ScreenInstruction::ChangeMode(mode_info) => {
                             screen.change_mode(mode_info);
                         }
@@ -506,6 +509,19 @@ pub fn start(mut os_input: Box<dyn OsApi>, opts: CliArgs) {
         })
         .unwrap();
 
+    let _signal_thread = thread::Builder::new()
+        .name("signal_listener".to_string())
+        .spawn({
+            let os_input = os_input.clone();
+            let send_screen_instructions = send_screen_instructions.clone();
+            move || {
+                os_input.receive_sigwinch(Box::new(move || {
+                    let _ = send_screen_instructions.send(ScreenInstruction::TerminalResize);
+                }));
+            }
+        })
+        .unwrap();
+
     // TODO: currently we don't wait for this to quit
     // because otherwise the app will hang. Need to fix this so it both
     // listens to the ipc-bus and is able to quit cleanly

src/common/os_input_output.rs

@@ -13,6 +13,8 @@ use std::path::PathBuf;
 use std::process::{Child, Command};
 use std::sync::{Arc, Mutex};
 
+use signal_hook::{consts::signal::*, iterator::Signals};
+
 use std::env;
 
 fn into_raw_mode(pid: RawFd) {
@@ -65,7 +67,7 @@ pub fn set_terminal_size_using_fd(fd: RawFd, columns: u16, rows: u16) {
 /// process exits.
 fn handle_command_exit(mut child: Child) {
     // register the SIGINT signal (TODO handle more signals)
-    let signals = ::signal_hook::iterator::Signals::new(&[::signal_hook::SIGINT]).unwrap();
+    let mut signals = ::signal_hook::iterator::Signals::new(&[SIGINT]).unwrap();
     'handle_exit: loop {
         // test whether the child process has exited
         match child.try_wait() {
@@ -82,11 +84,16 @@ fn handle_command_exit(mut child: Child) {
         }
 
         for signal in signals.pending() {
-            if signal == signal_hook::SIGINT {
+            // FIXME: We need to handle more signals here!
+            #[allow(clippy::single_match)]
+            match signal {
+                SIGINT => {
                     child.kill().unwrap();
                     child.wait().unwrap();
                     break 'handle_exit;
                 }
+                _ => {}
+            }
         }
     }
 }
@@ -188,6 +195,7 @@ pub trait OsApi: Send + Sync {
     fn get_stdout_writer(&self) -> Box<dyn io::Write>;
     /// Returns a [`Box`] pointer to this [`OsApi`] struct.
     fn box_clone(&self) -> Box<dyn OsApi>;
+    fn receive_sigwinch(&self, cb: Box<dyn Fn()>);
 }
 
 impl OsApi for OsInputOutput {
@@ -238,6 +246,20 @@ impl OsApi for OsInputOutput {
         waitpid(Pid::from_raw(pid), None).unwrap();
         Ok(())
     }
+    fn receive_sigwinch(&self, cb: Box<dyn Fn()>) {
+        let mut signals = Signals::new(&[SIGWINCH, SIGTERM, SIGINT, SIGQUIT]).unwrap();
+        for signal in signals.forever() {
+            match signal {
+                SIGWINCH => {
+                    cb();
+                }
+                SIGTERM | SIGINT | SIGQUIT => {
+                    break;
+                }
+                _ => unreachable!(),
+            }
+        }
+    }
 }
 
 impl Clone for Box<dyn OsApi> {

src/common/screen.rs

@@ -50,6 +50,7 @@ pub enum ScreenInstruction {
     CloseTab,
     GoToTab(u32),
     UpdateTabName(Vec<u8>),
+    TerminalResize,
     ChangeMode(ModeInfo),
 }
 
@@ -213,6 +214,15 @@ impl Screen {
         }
     }
 
+    pub fn resize_to_screen(&mut self) {
+        let new_screen_size = self.os_api.get_terminal_size_using_fd(0);
+        self.full_screen_ws = new_screen_size;
+        for (_, tab) in self.tabs.iter_mut() {
+            tab.resize_whole_tab(new_screen_size);
+        }
+        self.render();
+    }
+
     /// Renders this [`Screen`], which amounts to rendering its active [`Tab`].
     pub fn render(&mut self) {
         if let Some(active_tab) = self.get_active_tab_mut() {

src/common/utils/shared.rs

@@ -11,9 +11,18 @@ fn ansi_len(s: &str) -> usize {
         .count()
 }
 
-pub fn pad_to_size(s: &str, rows: usize, columns: usize) -> String {
+pub fn adjust_to_size(s: &str, rows: usize, columns: usize) -> String {
     s.lines()
-        .map(|l| [l, &str::repeat(" ", columns - ansi_len(l))].concat())
+        .map(|l| {
+            let actual_len = ansi_len(l);
+            if actual_len > columns {
+                let mut line = String::from(l);
+                line.truncate(columns);
+                return line;
+            } else {
+                return [l, &str::repeat(" ", columns - ansi_len(l))].concat();
+            }
+        })
         .chain(iter::repeat(str::repeat(" ", columns)))
         .take(rows)
         .collect::<Vec<_>>()

src/tests/fakes.rs

@@ -3,14 +3,13 @@ use std::collections::{HashMap, VecDeque};
 use std::io::Write;
 use std::os::unix::io::RawFd;
 use std::path::PathBuf;
-use std::sync::atomic::{AtomicBool, Ordering};
+use std::sync::{Arc, Condvar, Mutex};
-use std::sync::{Arc, Mutex};
 use std::time::{Duration, Instant};
 
 use crate::os_input_output::OsApi;
 use crate::tests::possible_tty_inputs::{get_possible_tty_inputs, Bytes};
 
-use crate::tests::utils::commands::SLEEP;
+use crate::tests::utils::commands::{QUIT, SLEEP};
 
 const MIN_TIME_BETWEEN_SNAPSHOTS: Duration = Duration::from_millis(50);
 
@@ -72,7 +71,8 @@ pub struct FakeInputOutput {
     win_sizes: Arc<Mutex<HashMap<RawFd, PositionAndSize>>>,
     possible_tty_inputs: HashMap<u16, Bytes>,
     last_snapshot_time: Arc<Mutex<Instant>>,
-    started_reading_from_pty: Arc<AtomicBool>,
+    should_trigger_sigwinch: Arc<(Mutex<bool>, Condvar)>,
+    sigwinch_event: Option<PositionAndSize>,
 }
 
 impl FakeInputOutput {
@@ -91,7 +91,8 @@ impl FakeInputOutput {
             io_events: Arc::new(Mutex::new(vec![])),
             win_sizes: Arc::new(Mutex::new(win_sizes)),
             possible_tty_inputs: get_possible_tty_inputs(),
-            started_reading_from_pty: Arc::new(AtomicBool::new(false)),
+            should_trigger_sigwinch: Arc::new((Mutex::new(false), Condvar::new())),
+            sigwinch_event: None,
         }
     }
     pub fn with_tty_inputs(mut self, tty_inputs: HashMap<u16, Bytes>) -> Self {
@@ -108,10 +109,20 @@ impl FakeInputOutput {
     pub fn add_terminal(&mut self, fd: RawFd) {
         self.stdin_writes.lock().unwrap().insert(fd, vec![]);
     }
+    pub fn add_sigwinch_event(&mut self, new_position_and_size: PositionAndSize) {
+        self.sigwinch_event = Some(new_position_and_size);
+    }
 }
 
 impl OsApi for FakeInputOutput {
     fn get_terminal_size_using_fd(&self, pid: RawFd) -> PositionAndSize {
+        if let Some(new_position_and_size) = self.sigwinch_event {
+            let (lock, _cvar) = &*self.should_trigger_sigwinch;
+            let should_trigger_sigwinch = lock.lock().unwrap();
+            if *should_trigger_sigwinch && pid == 0 {
+                return new_position_and_size;
+            }
+        }
         let win_sizes = self.win_sizes.lock().unwrap();
         let winsize = win_sizes.get(&pid).unwrap();
         *winsize
@@ -159,7 +170,6 @@ impl OsApi for FakeInputOutput {
                 if bytes_read > bytes.read_position {
                     bytes.set_read_position(bytes_read);
                 }
-                self.started_reading_from_pty.store(true, Ordering::Release);
                 return Ok(bytes_read);
             }
             None => Err(nix::Error::Sys(nix::errno::Errno::EAGAIN)),
@@ -199,6 +209,12 @@ impl OsApi for FakeInputOutput {
             .unwrap_or(vec![]);
         if command == SLEEP {
             std::thread::sleep(std::time::Duration::from_millis(200));
+        } else if command == QUIT && self.sigwinch_event.is_some() {
+            let (lock, cvar) = &*self.should_trigger_sigwinch;
+            let mut should_trigger_sigwinch = lock.lock().unwrap();
+            *should_trigger_sigwinch = true;
+            cvar.notify_one();
+            ::std::thread::sleep(MIN_TIME_BETWEEN_SNAPSHOTS); // give some time for the app to resize before quitting
         }
         command
     }
@@ -209,4 +225,14 @@ impl OsApi for FakeInputOutput {
         self.io_events.lock().unwrap().push(IoEvent::Kill(fd));
         Ok(())
     }
+    fn receive_sigwinch(&self, cb: Box<dyn Fn()>) {
+        if self.sigwinch_event.is_some() {
+            let (lock, cvar) = &*self.should_trigger_sigwinch;
+            let mut should_trigger_sigwinch = lock.lock().unwrap();
+            while !*should_trigger_sigwinch {
+                should_trigger_sigwinch = cvar.wait(should_trigger_sigwinch).unwrap();
+            }
+            cb();
+        }
+    }
 }

src/tests/integration/close_pane.rs

@@ -6,7 +6,7 @@ use crate::tests::utils::{get_next_to_last_snapshot, get_output_frame_snapshots}
 use crate::{start, CliArgs};
 
 use crate::tests::utils::commands::{
-    CLOSE_PANE_IN_PANE_MODE, COMMAND_TOGGLE, ESC, MOVE_FOCUS_IN_PANE_MODE, PANE_MODE, QUIT,
+    CLOSE_PANE_IN_PANE_MODE, ESC, MOVE_FOCUS_IN_PANE_MODE, PANE_MODE, QUIT,
     RESIZE_DOWN_IN_RESIZE_MODE, RESIZE_LEFT_IN_RESIZE_MODE, RESIZE_MODE, RESIZE_UP_IN_RESIZE_MODE,
     SPLIT_DOWN_IN_PANE_MODE, SPLIT_RIGHT_IN_PANE_MODE,
 };

src/tests/integration/mod.rs

@@ -12,4 +12,5 @@ pub mod resize_left;
 pub mod resize_right;
 pub mod resize_up;
 pub mod tabs;
+pub mod terminal_window_resize;
 pub mod toggle_fullscreen;

src/tests/integration/snapshots/zellij__tests__integration__terminal_window_resize__window_height_increase_with_one_pane.snap

@@ -0,0 +1,25 @@
+---
+source: src/tests/integration/terminal_window_resize.rs
+expression: snapshot_before_quit
+
+---
+line1-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+line2-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+line3-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+line4-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+line5-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+line6-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+line7-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+line8-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+line9-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+line10-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+line11-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+line12-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+line13-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+line14-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+line15-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+line16-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+line17-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+line18-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+line19-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+         █                                                                                                               

src/tests/integration/snapshots/zellij__tests__integration__terminal_window_resize__window_width_and_height_decrease_with_one_pane.snap

@@ -0,0 +1,25 @@
+---
+source: src/tests/integration/terminal_window_resize.rs
+expression: snapshot_before_quit
+
+---
+aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa                                                                                          
+line16-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa                               
+aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa                                                                                          
+line17-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa                               
+aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa                                                                                          
+line18-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa                               
+aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa                                                                                          
+line19-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa                               
+aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa                                                                                          
+prompt $ █                                                                                                               
+                                                                                                                         
+                                                                                                                         
+                                                                                                                         
+                                                                                                                         
+                                                                                                                         
+                                                                                                                         
+                                                                                                                         
+                                                                                                                         
+                                                                                                                         
+                                                                                                                         

src/tests/integration/snapshots/zellij__tests__integration__terminal_window_resize__window_width_decrease_with_one_pane.snap

@@ -0,0 +1,25 @@
+---
+source: src/tests/integration/terminal_window_resize.rs
+expression: snapshot_before_quit
+
+---
+aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa                                                                                          
+line11-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa                               
+aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa                                                                                          
+line12-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa                               
+aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa                                                                                          
+line13-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa                               
+aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa                                                                                          
+line14-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa                               
+aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa                                                                                          
+line15-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa                               
+aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa                                                                                          
+line16-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa                               
+aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa                                                                                          
+line17-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa                               
+aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa                                                                                          
+line18-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa                               
+aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa                                                                                          
+line19-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa                               
+aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa                                                                                          
+prompt $ █                                                                                                               

src/tests/integration/snapshots/zellij__tests__integration__terminal_window_resize__window_width_increase_with_one_pane.snap

@@ -0,0 +1,25 @@
+---
+source: src/tests/integration/terminal_window_resize.rs
+expression: snapshot_before_quit
+
+---
+line2-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+line3-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+line4-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+line5-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+line6-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+line7-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+line8-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+line9-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+line10-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+line11-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+line12-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+line13-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+line14-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+line15-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+line16-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+line17-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+line18-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+line19-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+prompt $                                                                                                                 
+         █                                                                                                               

src/tests/integration/terminal_window_resize.rs

@@ -0,0 +1,127 @@
+use crate::panes::PositionAndSize;
+use ::insta::assert_snapshot;
+
+use crate::tests::fakes::FakeInputOutput;
+use crate::tests::utils::commands::QUIT;
+use crate::tests::utils::{get_next_to_last_snapshot, get_output_frame_snapshots};
+use crate::{start, CliArgs};
+
+fn get_fake_os_input(fake_win_size: &PositionAndSize) -> FakeInputOutput {
+    FakeInputOutput::new(fake_win_size.clone())
+}
+
+#[test]
+pub fn window_width_decrease_with_one_pane() {
+    let fake_win_size = PositionAndSize {
+        columns: 121,
+        rows: 20,
+        x: 0,
+        y: 0,
+    };
+    let mut fake_input_output = get_fake_os_input(&fake_win_size);
+    fake_input_output.add_terminal_input(&[&QUIT]);
+    fake_input_output.add_sigwinch_event(PositionAndSize {
+        columns: 90,
+        rows: 20,
+        x: 0,
+        y: 0,
+    });
+    let opts = CliArgs::default();
+    start(Box::new(fake_input_output.clone()), opts);
+    let output_frames = fake_input_output
+        .stdout_writer
+        .output_frames
+        .lock()
+        .unwrap();
+    let snapshots = get_output_frame_snapshots(&output_frames, &fake_win_size);
+    let snapshot_before_quit =
+        get_next_to_last_snapshot(snapshots).expect("could not find snapshot");
+    assert_snapshot!(snapshot_before_quit);
+}
+
+#[test]
+pub fn window_width_increase_with_one_pane() {
+    let fake_win_size = PositionAndSize {
+        columns: 121,
+        rows: 20,
+        x: 0,
+        y: 0,
+    };
+    let mut fake_input_output = get_fake_os_input(&fake_win_size);
+    fake_input_output.add_terminal_input(&[&QUIT]);
+    fake_input_output.add_sigwinch_event(PositionAndSize {
+        columns: 141,
+        rows: 20,
+        x: 0,
+        y: 0,
+    });
+    let opts = CliArgs::default();
+    start(Box::new(fake_input_output.clone()), opts);
+    let output_frames = fake_input_output
+        .stdout_writer
+        .output_frames
+        .lock()
+        .unwrap();
+    let snapshots = get_output_frame_snapshots(&output_frames, &fake_win_size);
+    let snapshot_before_quit =
+        get_next_to_last_snapshot(snapshots).expect("could not find snapshot");
+    assert_snapshot!(snapshot_before_quit);
+}
+
+#[test]
+pub fn window_height_increase_with_one_pane() {
+    let fake_win_size = PositionAndSize {
+        columns: 121,
+        rows: 20,
+        x: 0,
+        y: 0,
+    };
+    let mut fake_input_output = get_fake_os_input(&fake_win_size);
+    fake_input_output.add_terminal_input(&[&QUIT]);
+    fake_input_output.add_sigwinch_event(PositionAndSize {
+        columns: 121,
+        rows: 30,
+        x: 0,
+        y: 0,
+    });
+    let opts = CliArgs::default();
+    start(Box::new(fake_input_output.clone()), opts);
+    let output_frames = fake_input_output
+        .stdout_writer
+        .output_frames
+        .lock()
+        .unwrap();
+    let snapshots = get_output_frame_snapshots(&output_frames, &fake_win_size);
+    let snapshot_before_quit =
+        get_next_to_last_snapshot(snapshots).expect("could not find snapshot");
+    assert_snapshot!(snapshot_before_quit);
+}
+
+#[test]
+pub fn window_width_and_height_decrease_with_one_pane() {
+    let fake_win_size = PositionAndSize {
+        columns: 121,
+        rows: 20,
+        x: 0,
+        y: 0,
+    };
+    let mut fake_input_output = get_fake_os_input(&fake_win_size);
+    fake_input_output.add_terminal_input(&[&QUIT]);
+    fake_input_output.add_sigwinch_event(PositionAndSize {
+        columns: 90,
+        rows: 10,
+        x: 0,
+        y: 0,
+    });
+    let opts = CliArgs::default();
+    start(Box::new(fake_input_output.clone()), opts);
+    let output_frames = fake_input_output
+        .stdout_writer
+        .output_frames
+        .lock()
+        .unwrap();
+    let snapshots = get_output_frame_snapshots(&output_frames, &fake_win_size);
+    let snapshot_before_quit =
+        get_next_to_last_snapshot(snapshots).expect("could not find snapshot");
+    assert_snapshot!(snapshot_before_quit);
+}

src/tests/possible_tty_inputs.rs

@@ -1,6 +1,7 @@
 use crate::tests::tty_inputs::{
-    COL_10, COL_121, COL_14, COL_15, COL_19, COL_20, COL_24, COL_25, COL_29, COL_30, COL_34,
+    COL_10, COL_121, COL_14, COL_141, COL_15, COL_19, COL_20, COL_24, COL_25, COL_29, COL_30,
-    COL_39, COL_4, COL_40, COL_47, COL_50, COL_60, COL_70, COL_8, COL_9, COL_90, COL_96,
+    COL_34, COL_39, COL_4, COL_40, COL_47, COL_50, COL_60, COL_70, COL_8, COL_80, COL_9, COL_90,
+    COL_96,
 };
 use std::collections::HashMap;
 use std::fs;
@@ -69,9 +70,11 @@ pub fn get_possible_tty_inputs() -> HashMap<u16, Bytes> {
     let col_50_bytes = Bytes::new().content_from_str(&COL_50);
     let col_60_bytes = Bytes::new().content_from_str(&COL_60);
     let col_70_bytes = Bytes::new().content_from_str(&COL_70);
+    let col_80_bytes = Bytes::new().content_from_str(&COL_80);
     let col_90_bytes = Bytes::new().content_from_str(&COL_90);
     let col_96_bytes = Bytes::new().content_from_str(&COL_96);
     let col_121_bytes = Bytes::new().content_from_str(&COL_121);
+    let col_141_bytes = Bytes::new().content_from_str(&COL_141);
     possible_inputs.insert(4, col_4_bytes);
     possible_inputs.insert(8, col_8_bytes);
     possible_inputs.insert(9, col_9_bytes);
@@ -91,8 +94,10 @@ pub fn get_possible_tty_inputs() -> HashMap<u16, Bytes> {
     possible_inputs.insert(50, col_50_bytes);
     possible_inputs.insert(60, col_60_bytes);
     possible_inputs.insert(70, col_70_bytes);
+    possible_inputs.insert(80, col_80_bytes);
     possible_inputs.insert(90, col_90_bytes);
     possible_inputs.insert(96, col_96_bytes);
     possible_inputs.insert(121, col_121_bytes);
+    possible_inputs.insert(141, col_141_bytes);
     possible_inputs
 }

src/tests/tty_inputs.rs

@@ -1,3 +1,26 @@
+pub const COL_141: [&str; 20] = [
+    "line1-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\r\n",
+    "line2-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\r\n",
+    "line3-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\r\n",
+    "line4-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\r\n",
+    "line5-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\r\n",
+    "line6-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\r\n",
+    "line7-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\r\n",
+    "line8-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\r\n",
+    "line9-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\r\n",
+    "line10-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\r\n",
+    "line11-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\r\n",
+    "line12-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\r\n",
+    "line13-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\r\n",
+    "line14-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\r\n",
+    "line15-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\r\n",
+    "line16-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\r\n",
+    "line17-baaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\r\n",
+    "line18-baaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\r\n",
+    "line19-baaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\r\n",
+    "prompt $ ",
+];
+
 pub const COL_121: [&str; 20] = [
     "line1-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\r\n",
     "line2-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\r\n",
@@ -457,6 +480,29 @@ pub const COL_70: [&str; 20] = [
     "prompt $ ",
 ];
 
+pub const COL_80: [&str; 20] = [
+    "line1-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line2-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line3-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line4-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line5-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line6-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line7-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line8-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line9-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line10-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line11-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line12-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line13-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line14-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line15-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line16-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line17-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line18-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "line19-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
+    "prompt $ ",
+];
+
 pub const COL_90: [&str; 20] = [
     "line1-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",
     "line2-bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\r\n",

src/tests/utils.rs

@@ -45,7 +45,6 @@ pub fn get_next_to_last_snapshot(mut snapshots: Vec<String>) -> Option<String> {
 }
 
 pub mod commands {
-    pub const COMMAND_TOGGLE: [u8; 1] = [7]; // ctrl-g
     pub const QUIT: [u8; 1] = [17]; // ctrl-q
     pub const ESC: [u8; 1] = [27];