Split alacritty into a separate crates

The crate containing the entry point is called alacritty, and the crate
containing everything else is called alacritty_terminal.

1 files changed, 0 insertions, 2442 deletions

diff --git a/src/term/mod.rs b/src/term/mod.rs
deleted file mode 100644
index 94b2ade2..00000000
--- a/src/term/mod.rs
+++ /dev/null
@@ -1,2442 +0,0 @@
-// Copyright 2016 Joe Wilm, The Alacritty Project Contributors
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-//
-//! Exports the `Term` type which is a high-level API for the Grid
-use std::cmp::{max, min};
-use std::ops::{Index, IndexMut, Range, RangeInclusive};
-use std::time::{Duration, Instant};
-use std::{io, mem, ptr};
-
-use copypasta::{Clipboard, Load, Store};
-use font::{self, RasterizedGlyph, Size};
-use glutin::MouseCursor;
-use unicode_width::UnicodeWidthChar;
-
-use crate::ansi::{
-    self, Attr, CharsetIndex, Color, CursorStyle, Handler, NamedColor, StandardCharset,
-};
-use crate::config::{Config, VisualBellAnimation};
-use crate::cursor;
-use crate::grid::{
-    BidirectionalIterator, DisplayIter, Grid, GridCell, IndexRegion, Indexed, Scroll,
-    ViewportPosition,
-};
-use crate::index::{self, Column, Contains, IndexRange, Line, Linear, Point};
-use crate::input::FONT_SIZE_STEP;
-use crate::message_bar::MessageBuffer;
-use crate::selection::{self, Locations, Selection};
-use crate::term::cell::{Cell, Flags, LineLength};
-use crate::term::color::Rgb;
-use crate::url::{Url, UrlParser};
-
-#[cfg(windows)]
-use crate::tty;
-
-pub mod cell;
-pub mod color;
-
-/// A type that can expand a given point to a region
-///
-/// Usually this is implemented for some 2-D array type since
-/// points are two dimensional indices.
-pub trait Search {
-    /// Find the nearest semantic boundary _to the left_ of provided point.
-    fn semantic_search_left(&self, _: Point<usize>) -> Point<usize>;
-    /// Find the nearest semantic boundary _to the point_ of provided point.
-    fn semantic_search_right(&self, _: Point<usize>) -> Point<usize>;
-    /// Find the nearest URL boundary in both directions.
-    fn url_search(&self, _: Point<usize>) -> Option<Url>;
-}
-
-impl Search for Term {
-    fn semantic_search_left(&self, mut point: Point<usize>) -> Point<usize> {
-        // Limit the starting point to the last line in the history
-        point.line = min(point.line, self.grid.len() - 1);
-
-        let mut iter = self.grid.iter_from(point);
-        let last_col = self.grid.num_cols() - Column(1);
-
-        while let Some(cell) = iter.prev() {
-            if self.semantic_escape_chars.contains(cell.c) {
-                break;
-            }
-
-            if iter.cur.col == last_col && !cell.flags.contains(cell::Flags::WRAPLINE) {
-                break; // cut off if on new line or hit escape char
-            }
-
-            point = iter.cur;
-        }
-
-        point
-    }
-
-    fn semantic_search_right(&self, mut point: Point<usize>) -> Point<usize> {
-        // Limit the starting point to the last line in the history
-        point.line = min(point.line, self.grid.len() - 1);
-
-        let mut iter = self.grid.iter_from(point);
-        let last_col = self.grid.num_cols() - 1;
-
-        while let Some(cell) = iter.next() {
-            if self.semantic_escape_chars.contains(cell.c) {
-                break;
-            }
-
-            point = iter.cur;
-
-            if point.col == last_col && !cell.flags.contains(cell::Flags::WRAPLINE) {
-                break; // cut off if on new line or hit escape char
-            }
-        }
-
-        point
-    }
-
-    fn url_search(&self, mut point: Point<usize>) -> Option<Url> {
-        let last_col = self.grid.num_cols() - 1;
-
-        // Switch first line from top to bottom
-        point.line = self.grid.num_lines().0 - point.line - 1;
-
-        // Remove viewport scroll offset
-        point.line += self.grid.display_offset();
-
-        // Create forwards and backwards iterators
-        let mut iterf = self.grid.iter_from(point);
-        point.col += 1;
-        let mut iterb = self.grid.iter_from(point);
-
-        // Find URLs
-        let mut url_parser = UrlParser::new();
-        while let Some(cell) = iterb.prev() {
-            if (iterb.cur.col == last_col && !cell.flags.contains(cell::Flags::WRAPLINE))
-                || url_parser.advance_left(cell)
-            {
-                break;
-            }
-        }
-
-        while let Some(cell) = iterf.next() {
-            if url_parser.advance_right(cell)
-                || (iterf.cur.col == last_col && !cell.flags.contains(cell::Flags::WRAPLINE))
-            {
-                break;
-            }
-        }
-        url_parser.url()
-    }
-}
-
-impl selection::Dimensions for Term {
-    fn dimensions(&self) -> Point {
-        Point { col: self.grid.num_cols(), line: self.grid.num_lines() }
-    }
-}
-
-/// Iterator that yields cells needing render
-///
-/// Yields cells that require work to be displayed (that is, not a an empty
-/// background cell). Additionally, this manages some state of the grid only
-/// relevant for rendering like temporarily changing the cell with the cursor.
-///
-/// This manages the cursor during a render. The cursor location is inverted to
-/// draw it, and reverted after drawing to maintain state.
-pub struct RenderableCellsIter<'a> {
-    inner: DisplayIter<'a, Cell>,
-    grid: &'a Grid<Cell>,
-    cursor: &'a Point,
-    cursor_offset: usize,
-    cursor_cell: Option<RasterizedGlyph>,
-    cursor_style: CursorStyle,
-    config: &'a Config,
-    colors: &'a color::List,
-    selection: Option<RangeInclusive<index::Linear>>,
-    url_highlight: &'a Option<RangeInclusive<index::Linear>>,
-}
-
-impl<'a> RenderableCellsIter<'a> {
-    /// Create the renderable cells iterator
-    ///
-    /// The cursor and terminal mode are required for properly displaying the
-    /// cursor.
-    fn new<'b>(
-        term: &'b Term,
-        config: &'b Config,
-        selection: Option<Locations>,
-        mut cursor_style: CursorStyle,
-        metrics: font::Metrics,
-    ) -> RenderableCellsIter<'b> {
-        let grid = &term.grid;
-
-        let cursor_offset = grid.line_to_offset(term.cursor.point.line);
-        let inner = grid.display_iter();
-
-        let mut selection_range = None;
-        if let Some(loc) = selection {
-            // Get on-screen lines of the selection's locations
-            let start_line = grid.buffer_line_to_visible(loc.start.line);
-            let end_line = grid.buffer_line_to_visible(loc.end.line);
-
-            // Get start/end locations based on what part of selection is on screen
-            let locations = match (start_line, end_line) {
-                (ViewportPosition::Visible(start_line), ViewportPosition::Visible(end_line)) => {
-                    Some((start_line, loc.start.col, end_line, loc.end.col))
-                },
-                (ViewportPosition::Visible(start_line), ViewportPosition::Above) => {
-                    Some((start_line, loc.start.col, Line(0), Column(0)))
-                },
-                (ViewportPosition::Below, ViewportPosition::Visible(end_line)) => {
-                    Some((grid.num_lines(), Column(0), end_line, loc.end.col))
-                },
-                (ViewportPosition::Below, ViewportPosition::Above) => {
-                    Some((grid.num_lines(), Column(0), Line(0), Column(0)))
-                },
-                _ => None,
-            };
-
-            if let Some((start_line, start_col, end_line, end_col)) = locations {
-                // start and end *lines* are swapped as we switch from buffer to
-                // Line coordinates.
-                let mut end = Point { line: start_line, col: start_col };
-                let mut start = Point { line: end_line, col: end_col };
-
-                if start > end {
-                    ::std::mem::swap(&mut start, &mut end);
-                }
-
-                let cols = grid.num_cols();
-                let start = Linear::from_point(cols, start.into());
-                let end = Linear::from_point(cols, end.into());
-
-                // Update the selection
-                selection_range = Some(RangeInclusive::new(start, end));
-            }
-        }
-
-        // Load cursor glyph
-        let cursor = &term.cursor.point;
-        let cursor_visible = term.mode.contains(TermMode::SHOW_CURSOR) && grid.contains(cursor);
-        let cursor_cell = if cursor_visible {
-            let offset_x = config.font().offset().x;
-            let offset_y = config.font().offset().y;
-
-            let is_wide = grid[cursor].flags.contains(cell::Flags::WIDE_CHAR)
-                && (cursor.col + 1) < grid.num_cols();
-            Some(cursor::get_cursor_glyph(cursor_style, metrics, offset_x, offset_y, is_wide))
-        } else {
-            // Use hidden cursor so text will not get inverted
-            cursor_style = CursorStyle::Hidden;
-            None
-        };
-
-        RenderableCellsIter {
-            cursor,
-            cursor_offset,
-            grid,
-            inner,
-            selection: selection_range,
-            url_highlight: &grid.url_highlight,
-            config,
-            colors: &term.colors,
-            cursor_cell,
-            cursor_style,
-        }
-    }
-}
-
-#[derive(Clone, Debug)]
-pub enum RenderableCellContent {
-    Chars([char; cell::MAX_ZEROWIDTH_CHARS + 1]),
-    Cursor((CursorStyle, RasterizedGlyph)),
-}
-
-#[derive(Clone, Debug)]
-pub struct RenderableCell {
-    /// A _Display_ line (not necessarily an _Active_ line)
-    pub line: Line,
-    pub column: Column,
-    pub inner: RenderableCellContent,
-    pub fg: Rgb,
-    pub bg: Rgb,
-    pub bg_alpha: f32,
-    pub flags: cell::Flags,
-}
-
-impl RenderableCell {
-    fn new(config: &Config, colors: &color::List, cell: Indexed<Cell>, selected: bool) -> Self {
-        // Lookup RGB values
-        let mut fg_rgb = Self::compute_fg_rgb(config, colors, cell.fg, cell.flags);
-        let mut bg_rgb = Self::compute_bg_rgb(colors, cell.bg);
-
-        let selection_background = config.colors().selection.background;
-        if let (true, Some(col)) = (selected, selection_background) {
-            // Override selection background with config colors
-            bg_rgb = col;
-        } else if selected ^ cell.inverse() {
-            if fg_rgb == bg_rgb && !cell.flags.contains(Flags::HIDDEN) {
-                // Reveal inversed text when fg/bg is the same
-                fg_rgb = colors[NamedColor::Background];
-                bg_rgb = colors[NamedColor::Foreground];
-            } else {
-                // Invert cell fg and bg colors
-                mem::swap(&mut fg_rgb, &mut bg_rgb);
-            }
-        }
-
-        // Override selection text with config colors
-        if let (true, Some(col)) = (selected, config.colors().selection.text) {
-            fg_rgb = col;
-        }
-
-        RenderableCell {
-            line: cell.line,
-            column: cell.column,
-            inner: RenderableCellContent::Chars(cell.chars()),
-            fg: fg_rgb,
-            bg: bg_rgb,
-            bg_alpha: Self::compute_bg_alpha(colors, bg_rgb),
-            flags: cell.flags,
-        }
-    }
-
-    fn compute_fg_rgb(config: &Config, colors: &color::List, fg: Color, flags: cell::Flags) -> Rgb {
-        match fg {
-            Color::Spec(rgb) => rgb,
-            Color::Named(ansi) => {
-                match (config.draw_bold_text_with_bright_colors(), flags & Flags::DIM_BOLD) {
-                    // If no bright foreground is set, treat it like the BOLD flag doesn't exist
-                    (_, cell::Flags::DIM_BOLD)
-                        if ansi == NamedColor::Foreground
-                            && config.colors().primary.bright_foreground.is_none() =>
-                    {
-                        colors[NamedColor::DimForeground]
-                    },
-                    // Draw bold text in bright colors *and* contains bold flag.
-                    (true, cell::Flags::BOLD) => colors[ansi.to_bright()],
-                    // Cell is marked as dim and not bold
-                    (_, cell::Flags::DIM) | (false, cell::Flags::DIM_BOLD) => colors[ansi.to_dim()],
-                    // None of the above, keep original color.
-                    _ => colors[ansi],
-                }
-            },
-            Color::Indexed(idx) => {
-                let idx = match (
-                    config.draw_bold_text_with_bright_colors(),
-                    flags & Flags::DIM_BOLD,
-                    idx,
-                ) {
-                    (true, cell::Flags::BOLD, 0..=7) => idx as usize + 8,
-                    (false, cell::Flags::DIM, 8..=15) => idx as usize - 8,
-                    (false, cell::Flags::DIM, 0..=7) => idx as usize + 260,
-                    _ => idx as usize,
-                };
-
-                colors[idx]
-            },
-        }
-    }
-
-    #[inline]
-    fn compute_bg_alpha(colors: &color::List, bg: Rgb) -> f32 {
-        if colors[NamedColor::Background] == bg {
-            0.
-        } else {
-            1.
-        }
-    }
-
-    #[inline]
-    fn compute_bg_rgb(colors: &color::List, bg: Color) -> Rgb {
-        match bg {
-            Color::Spec(rgb) => rgb,
-            Color::Named(ansi) => colors[ansi],
-            Color::Indexed(idx) => colors[idx],
-        }
-    }
-}
-
-impl<'a> Iterator for RenderableCellsIter<'a> {
-    type Item = RenderableCell;
-
-    /// Gets the next renderable cell
-    ///
-    /// Skips empty (background) cells and applies any flags to the cell state
-    /// (eg. invert fg and bg colors).
-    #[inline]
-    fn next(&mut self) -> Option<Self::Item> {
-        loop {
-            if self.cursor_offset == self.inner.offset() && self.inner.column() == self.cursor.col {
-                // Handle cursor
-                if let Some(cursor_cell) = self.cursor_cell.take() {
-                    let cell = Indexed {
-                        inner: self.grid[self.cursor],
-                        column: self.cursor.col,
-                        line: self.cursor.line,
-                    };
-                    let mut renderable_cell =
-                        RenderableCell::new(self.config, self.colors, cell, false);
-
-                    renderable_cell.inner =
-                        RenderableCellContent::Cursor((self.cursor_style, cursor_cell));
-
-                    if let Some(color) = self.config.cursor_cursor_color() {
-                        renderable_cell.fg = color;
-                    }
-
-                    return Some(renderable_cell);
-                } else {
-                    let mut cell =
-                        RenderableCell::new(self.config, self.colors, self.inner.next()?, false);
-
-                    if self.cursor_style == CursorStyle::Block {
-                        std::mem::swap(&mut cell.bg, &mut cell.fg);
-
-                        if let Some(color) = self.config.cursor_text_color() {
-                            cell.fg = color;
-                        }
-                    }
-
-                    return Some(cell);
-                }
-            } else {
-                let mut cell = self.inner.next()?;
-
-                let index = Linear::new(self.grid.num_cols(), cell.column, cell.line);
-
-                let selected =
-                    self.selection.as_ref().map(|range| range.contains_(index)).unwrap_or(false);
-
-                // Skip empty cells
-                if cell.is_empty() && !selected {
-                    continue;
-                }
-
-                // Underline URL highlights
-                if self.url_highlight.as_ref().map(|range| range.contains_(index)).unwrap_or(false)
-                {
-                    cell.inner.flags.insert(Flags::UNDERLINE);
-                }
-
-                return Some(RenderableCell::new(self.config, self.colors, cell, selected));
-            }
-        }
-    }
-}
-
-pub mod mode {
-    use bitflags::bitflags;
-
-    bitflags! {
-        pub struct TermMode: u16 {
-            const SHOW_CURSOR         = 0b00_0000_0000_0001;
-            const APP_CURSOR          = 0b00_0000_0000_0010;
-            const APP_KEYPAD          = 0b00_0000_0000_0100;
-            const MOUSE_REPORT_CLICK  = 0b00_0000_0000_1000;
-            const BRACKETED_PASTE     = 0b00_0000_0001_0000;
-            const SGR_MOUSE           = 0b00_0000_0010_0000;
-            const MOUSE_MOTION        = 0b00_0000_0100_0000;
-            const LINE_WRAP           = 0b00_0000_1000_0000;
-            const LINE_FEED_NEW_LINE  = 0b00_0001_0000_0000;
-            const ORIGIN              = 0b00_0010_0000_0000;
-            const INSERT              = 0b00_0100_0000_0000;
-            const FOCUS_IN_OUT        = 0b00_1000_0000_0000;
-            const ALT_SCREEN          = 0b01_0000_0000_0000;
-            const MOUSE_DRAG          = 0b10_0000_0000_0000;
-            const ANY                 = 0b11_1111_1111_1111;
-            const NONE                = 0;
-        }
-    }
-
-    impl Default for TermMode {
-        fn default() -> TermMode {
-            TermMode::SHOW_CURSOR | TermMode::LINE_WRAP
-        }
-    }
-}
-
-pub use crate::term::mode::TermMode;
-
-trait CharsetMapping {
-    fn map(&self, c: char) -> char {
-        c
-    }
-}
-
-impl CharsetMapping for StandardCharset {
-    /// Switch/Map character to the active charset. Ascii is the common case and
-    /// for that we want to do as little as possible.
-    #[inline]
-    fn map(&self, c: char) -> char {
-        match *self {
-            StandardCharset::Ascii => c,
-            StandardCharset::SpecialCharacterAndLineDrawing => match c {
-                '`' => '◆',
-                'a' => '▒',
-                'b' => '\t',
-                'c' => '\u{000c}',
-                'd' => '\r',
-                'e' => '\n',
-                'f' => '°',
-                'g' => '±',
-                'h' => '\u{2424}',
-                'i' => '\u{000b}',
-                'j' => '┘',
-                'k' => '┐',
-                'l' => '┌',
-                'm' => '└',
-                'n' => '┼',
-                'o' => '⎺',
-                'p' => '⎻',
-                'q' => '─',
-                'r' => '⎼',
-                's' => '⎽',
-                't' => '├',
-                'u' => '┤',
-                'v' => '┴',
-                'w' => '┬',
-                'x' => '│',
-                'y' => '≤',
-                'z' => '≥',
-                '{' => 'π',
-                '|' => '≠',
-                '}' => '£',
-                '~' => '·',
-                _ => c,
-            },
-        }
-    }
-}
-
-#[derive(Default, Copy, Clone)]
-struct Charsets([StandardCharset; 4]);
-
-impl Index<CharsetIndex> for Charsets {
-    type Output = StandardCharset;
-
-    fn index(&self, index: CharsetIndex) -> &StandardCharset {
-        &self.0[index as usize]
-    }
-}
-
-impl IndexMut<CharsetIndex> for Charsets {
-    fn index_mut(&mut self, index: CharsetIndex) -> &mut StandardCharset {
-        &mut self.0[index as usize]
-    }
-}
-
-#[derive(Default, Copy, Clone)]
-pub struct Cursor {
-    /// The location of this cursor
-    pub point: Point,
-
-    /// Template cell when using this cursor
-    template: Cell,
-
-    /// Currently configured graphic character sets
-    charsets: Charsets,
-}
-
-pub struct VisualBell {
-    /// Visual bell animation
-    animation: VisualBellAnimation,
-
-    /// Visual bell duration
-    duration: Duration,
-
-    /// The last time the visual bell rang, if at all
-    start_time: Option<Instant>,
-}
-
-fn cubic_bezier(p0: f64, p1: f64, p2: f64, p3: f64, x: f64) -> f64 {
-    (1.0 - x).powi(3) * p0
-        + 3.0 * (1.0 - x).powi(2) * x * p1
-        + 3.0 * (1.0 - x) * x.powi(2) * p2
-        + x.powi(3) * p3
-}
-
-impl VisualBell {
-    pub fn new(config: &Config) -> VisualBell {
-        let visual_bell_config = config.visual_bell();
-        VisualBell {
-            animation: visual_bell_config.animation(),
-            duration: visual_bell_config.duration(),
-            start_time: None,
-        }
-    }
-
-    /// Ring the visual bell, and return its intensity.
-    pub fn ring(&mut self) -> f64 {
-        let now = Instant::now();
-        self.start_time = Some(now);
-        self.intensity_at_instant(now)
-    }
-
-    /// Get the currently intensity of the visual bell. The bell's intensity
-    /// ramps down from 1.0 to 0.0 at a rate determined by the bell's duration.
-    pub fn intensity(&self) -> f64 {
-        self.intensity_at_instant(Instant::now())
-    }
-
-    /// Check whether or not the visual bell has completed "ringing".
-    pub fn completed(&mut self) -> bool {
-        match self.start_time {
-            Some(earlier) => {
-                if Instant::now().duration_since(earlier) >= self.duration {
-                    self.start_time = None;
-                }
-                false
-            },
-            None => true,
-        }
-    }
-
-    /// Get the intensity of the visual bell at a particular instant. The bell's
-    /// intensity ramps down from 1.0 to 0.0 at a rate determined by the bell's
-    /// duration.
-    pub fn intensity_at_instant(&self, instant: Instant) -> f64 {
-        // If `duration` is zero, then the VisualBell is disabled; therefore,
-        // its `intensity` is zero.
-        if self.duration == Duration::from_secs(0) {
-            return 0.0;
-        }
-
-        match self.start_time {
-            // Similarly, if `start_time` is `None`, then the VisualBell has not
-            // been "rung"; therefore, its `intensity` is zero.
-            None => 0.0,
-
-            Some(earlier) => {
-                // Finally, if the `instant` at which we wish to compute the
-                // VisualBell's `intensity` occurred before the VisualBell was
-                // "rung", then its `intensity` is also zero.
-                if instant < earlier {
-                    return 0.0;
-                }
-
-                let elapsed = instant.duration_since(earlier);
-                let elapsed_f =
-                    elapsed.as_secs() as f64 + f64::from(elapsed.subsec_nanos()) / 1e9f64;
-                let duration_f = self.duration.as_secs() as f64
-                    + f64::from(self.duration.subsec_nanos()) / 1e9f64;
-
-                // Otherwise, we compute a value `time` from 0.0 to 1.0
-                // inclusive that represents the ratio of `elapsed` time to the
-                // `duration` of the VisualBell.
-                let time = (elapsed_f / duration_f).min(1.0);
-
-                // We use this to compute the inverse `intensity` of the
-                // VisualBell. When `time` is 0.0, `inverse_intensity` is 0.0,
-                // and when `time` is 1.0, `inverse_intensity` is 1.0.
-                let inverse_intensity = match self.animation {
-                    VisualBellAnimation::Ease | VisualBellAnimation::EaseOut => {
-                        cubic_bezier(0.25, 0.1, 0.25, 1.0, time)
-                    },
-                    VisualBellAnimation::EaseOutSine => cubic_bezier(0.39, 0.575, 0.565, 1.0, time),
-                    VisualBellAnimation::EaseOutQuad => cubic_bezier(0.25, 0.46, 0.45, 0.94, time),
-                    VisualBellAnimation::EaseOutCubic => {
-                        cubic_bezier(0.215, 0.61, 0.355, 1.0, time)
-                    },
-                    VisualBellAnimation::EaseOutQuart => cubic_bezier(0.165, 0.84, 0.44, 1.0, time),
-                    VisualBellAnimation::EaseOutQuint => cubic_bezier(0.23, 1.0, 0.32, 1.0, time),
-                    VisualBellAnimation::EaseOutExpo => cubic_bezier(0.19, 1.0, 0.22, 1.0, time),
-                    VisualBellAnimation::EaseOutCirc => cubic_bezier(0.075, 0.82, 0.165, 1.0, time),
-                    VisualBellAnimation::Linear => time,
-                };
-
-                // Since we want the `intensity` of the VisualBell to decay over
-                // `time`, we subtract the `inverse_intensity` from 1.0.
-                1.0 - inverse_intensity
-            },
-        }
-    }
-
-    pub fn update_config(&mut self, config: &Config) {
-        let visual_bell_config = config.visual_bell();
-        self.animation = visual_bell_config.animation();
-        self.duration = visual_bell_config.duration();
-    }
-}
-
-pub struct Term {
-    /// The grid
-    grid: Grid<Cell>,
-
-    /// Tracks if the next call to input will need to first handle wrapping.
-    /// This is true after the last column is set with the input function. Any function that
-    /// implicitly sets the line or column needs to set this to false to avoid wrapping twice.
-    /// input_needs_wrap ensures that cursor.col is always valid for use into indexing into
-    /// arrays. Without it we would have to sanitize cursor.col every time we used it.
-    input_needs_wrap: bool,
-
-    /// Got a request to set title; it's buffered here until next draw.
-    ///
-    /// Would be nice to avoid the allocation...
-    next_title: Option<String>,
-
-    /// Got a request to set the mouse cursor; it's buffered here until the next draw
-    next_mouse_cursor: Option<MouseCursor>,
-
-    /// Alternate grid
-    alt_grid: Grid<Cell>,
-
-    /// Alt is active
-    alt: bool,
-
-    /// The cursor
-    cursor: Cursor,
-
-    /// The graphic character set, out of `charsets`, which ASCII is currently
-    /// being mapped to
-    active_charset: CharsetIndex,
-
-    /// Tabstops
-    tabs: TabStops,
-
-    /// Mode flags
-    mode: TermMode,
-
-    /// Scroll region
-    scroll_region: Range<Line>,
-
-    /// Font size
-    pub font_size: Size,
-    original_font_size: Size,
-
-    /// Size
-    size_info: SizeInfo,
-
-    pub dirty: bool,
-
-    pub visual_bell: VisualBell,
-    pub next_is_urgent: Option<bool>,
-
-    /// Saved cursor from main grid
-    cursor_save: Cursor,
-
-    /// Saved cursor from alt grid
-    cursor_save_alt: Cursor,
-
-    semantic_escape_chars: String,
-
-    /// Colors used for rendering
-    colors: color::List,
-
-    /// Is color in `colors` modified or not
-    color_modified: [bool; color::COUNT],
-
-    /// Original colors from config
-    original_colors: color::List,
-
-    /// Current style of the cursor
-    cursor_style: Option<CursorStyle>,
-
-    /// Default style for resetting the cursor
-    default_cursor_style: CursorStyle,
-
-    /// Whether to permit updating the terminal title
-    dynamic_title: bool,
-
-    /// Number of spaces in one tab
-    tabspaces: usize,
-
-    /// Automatically scroll to bottom when new lines are added
-    auto_scroll: bool,
-
-    /// Buffer to store messages for the message bar
-    message_buffer: MessageBuffer,
-
-    /// Hint that Alacritty should be closed
-    should_exit: bool,
-}
-
-/// Terminal size info
-#[derive(Debug, Copy, Clone, Serialize, Deserialize)]
-pub struct SizeInfo {
-    /// Terminal window width
-    pub width: f32,
-
-    /// Terminal window height
-    pub height: f32,
-
-    /// Width of individual cell
-    pub cell_width: f32,
-
-    /// Height of individual cell
-    pub cell_height: f32,
-
-    /// Horizontal window padding
-    pub padding_x: f32,
-
-    /// Horizontal window padding
-    pub padding_y: f32,
-
-    /// DPI factor of the current window
-    #[serde(default)]
-    pub dpr: f64,
-}
-
-impl SizeInfo {
-    #[inline]
-    pub fn lines(&self) -> Line {
-        Line(((self.height - 2. * self.padding_y) / self.cell_height) as usize)
-    }
-
-    #[inline]
-    pub fn cols(&self) -> Column {
-        Column(((self.width - 2. * self.padding_x) / self.cell_width) as usize)
-    }
-
-    pub fn contains_point(&self, x: usize, y: usize, include_padding: bool) -> bool {
-        if include_padding {
-            x < self.width as usize && y < self.height as usize
-        } else {
-            x < (self.width - self.padding_x) as usize
-                && x >= self.padding_x as usize
-                && y < (self.height - self.padding_y) as usize
-                && y >= self.padding_y as usize
-        }
-    }
-
-    pub fn pixels_to_coords(&self, x: usize, y: usize) -> Point {
-        let col = Column(x.saturating_sub(self.padding_x as usize) / (self.cell_width as usize));
-        let line = Line(y.saturating_sub(self.padding_y as usize) / (self.cell_height as usize));
-
-        Point {
-            line: min(line, Line(self.lines().saturating_sub(1))),
-            col: min(col, Column(self.cols().saturating_sub(1))),
-        }
-    }
-}
-
-impl Term {
-    pub fn selection(&self) -> &Option<Selection> {
-        &self.grid.selection
-    }
-
-    pub fn selection_mut(&mut self) -> &mut Option<Selection> {
-        &mut self.grid.selection
-    }
-
-    #[inline]
-    pub fn get_next_title(&mut self) -> Option<String> {
-        self.next_title.take()
-    }
-
-    #[inline]
-    pub fn scroll_display(&mut self, scroll: Scroll) {
-        self.grid.scroll_display(scroll);
-        self.reset_url_highlight();
-        self.dirty = true;
-    }
-
-    #[inline]
-    pub fn get_next_mouse_cursor(&mut self) -> Option<MouseCursor> {
-        self.next_mouse_cursor.take()
-    }
-
-    pub fn new(config: &Config, size: SizeInfo, message_buffer: MessageBuffer) -> Term {
-        let num_cols = size.cols();
-        let num_lines = size.lines();
-
-        let history_size = config.scrolling().history as usize;
-        let grid = Grid::new(num_lines, num_cols, history_size, Cell::default());
-        let alt = Grid::new(num_lines, num_cols, 0 /* scroll history */, Cell::default());
-
-        let tabspaces = config.tabspaces();
-        let tabs = TabStops::new(grid.num_cols(), tabspaces);
-
-        let scroll_region = Line(0)..grid.num_lines();
-
-        let colors = color::List::from(config.colors());
-
-        Term {
-            next_title: None,
-            next_mouse_cursor: None,
-            dirty: false,
-            visual_bell: VisualBell::new(config),
-            next_is_urgent: None,
-            input_needs_wrap: false,
-            grid,
-            alt_grid: alt,
-            alt: false,
-            font_size: config.font().size(),
-            original_font_size: config.font().size(),
-            active_charset: Default::default(),
-            cursor: Default::default(),
-            cursor_save: Default::default(),
-            cursor_save_alt: Default::default(),
-            tabs,
-            mode: Default::default(),
-            scroll_region,
-            size_info: size,
-            colors,
-            color_modified: [false; color::COUNT],
-            original_colors: colors,
-            semantic_escape_chars: config.selection().semantic_escape_chars.clone(),
-            cursor_style: None,
-            default_cursor_style: config.cursor_style(),
-            dynamic_title: config.dynamic_title(),
-            tabspaces,
-            auto_scroll: config.scrolling().auto_scroll,
-            message_buffer,
-            should_exit: false,
-        }
-    }
-
-    pub fn change_font_size(&mut self, delta: f32) {
-        // Saturating addition with minimum font size FONT_SIZE_STEP
-        let new_size = self.font_size + Size::new(delta);
-        self.font_size = max(new_size, Size::new(FONT_SIZE_STEP));
-        self.dirty = true;
-    }
-
-    pub fn reset_font_size(&mut self) {
-        self.font_size = self.original_font_size;
-        self.dirty = true;
-    }
-
-    pub fn update_config(&mut self, config: &Config) {
-        self.semantic_escape_chars = config.selection().semantic_escape_chars.clone();
-        self.original_colors.fill_named(config.colors());
-        self.original_colors.fill_cube(config.colors());
-        self.original_colors.fill_gray_ramp(config.colors());
-        for i in 0..color::COUNT {
-            if !self.color_modified[i] {
-                self.colors[i] = self.original_colors[i];
-            }
-        }
-        self.visual_bell.update_config(config);
-        self.default_cursor_style = config.cursor_style();
-        self.dynamic_title = config.dynamic_title();
-        self.auto_scroll = config.scrolling().auto_scroll;
-        self.grid.update_history(config.scrolling().history as usize, &self.cursor.template);
-    }
-
-    #[inline]
-    pub fn needs_draw(&self) -> bool {
-        self.dirty
-    }
-
-    pub fn selection_to_string(&self) -> Option<String> {
-        /// Need a generic push() for the Append trait
-        trait PushChar {
-            fn push_char(&mut self, c: char);
-            fn maybe_newline(&mut self, grid: &Grid<Cell>, line: usize, ending: Column) {
-                if ending != Column(0)
-                    && !grid[line][ending - 1].flags.contains(cell::Flags::WRAPLINE)
-                {
-                    self.push_char('\n');
-                }
-            }
-        }
-
-        impl PushChar for String {
-            #[inline]
-            fn push_char(&mut self, c: char) {
-                self.push(c);
-            }
-        }
-
-        trait Append: PushChar {
-            fn append(
-                &mut self,
-                grid: &Grid<Cell>,
-                tabs: &TabStops,
-                line: usize,
-                cols: Range<Column>,
-            );
-        }
-
-        impl Append for String {
-            fn append(
-                &mut self,
-                grid: &Grid<Cell>,
-                tabs: &TabStops,
-                mut line: usize,
-                cols: Range<Column>,
-            ) {
-                // Select until last line still within the buffer
-                line = min(line, grid.len() - 1);
-
-                let grid_line = &grid[line];
-                let line_length = grid_line.line_length();
-                let line_end = min(line_length, cols.end + 1);
-
-                if line_end.0 == 0 && cols.end >= grid.num_cols() - 1 {
-                    self.push('\n');
-                } else if cols.start < line_end {
-                    let mut tab_mode = false;
-
-                    for col in IndexRange::from(cols.start..line_end) {
-                        let cell = grid_line[col];
-
-                        if tab_mode {
-                            // Skip over whitespace until next tab-stop once a tab was found
-                            if tabs[col] {
-                                tab_mode = false;
-                            } else if cell.c == ' ' {
-                                continue;
-                            }
-                        }
-
-                        if !cell.flags.contains(cell::Flags::WIDE_CHAR_SPACER) {
-                            self.push(cell.c);
-                            for c in (&cell.chars()[1..]).iter().filter(|c| **c != ' ') {
-                                self.push(*c);
-                            }
-                        }
-
-                        if cell.c == '\t' {
-                            tab_mode = true;
-                        }
-                    }
-
-                    if cols.end >= grid.num_cols() - 1 {
-                        self.maybe_newline(grid, line, line_end);
-                    }
-                }
-            }
-        }
-
-        let alt_screen = self.mode.contains(TermMode::ALT_SCREEN);
-        let selection = self.grid.selection.clone()?;
-        let span = selection.to_span(self, alt_screen)?;
-
-        let mut res = String::new();
-
-        let Locations { mut start, mut end } = span.to_locations();
-
-        if start > end {
-            ::std::mem::swap(&mut start, &mut end);
-        }
-
-        let line_count = end.line - start.line;
-        let max_col = Column(usize::max_value() - 1);
-
-        match line_count {
-            // Selection within single line
-            0 => {
-                res.append(&self.grid, &self.tabs, start.line, start.col..end.col);
-            },
-
-            // Selection ends on line following start
-            1 => {
-                // Ending line
-                res.append(&self.grid, &self.tabs, end.line, end.col..max_col);
-
-                // Starting line
-                res.append(&self.grid, &self.tabs, start.line, Column(0)..start.col);
-            },
-
-            // Multi line selection
-            _ => {
-                // Ending line
-                res.append(&self.grid, &self.tabs, end.line, end.col..max_col);
-
-                let middle_range = (start.line + 1)..(end.line);
-                for line in middle_range.rev() {
-                    res.append(&self.grid, &self.tabs, line, Column(0)..max_col);
-                }
-
-                // Starting line
-                res.append(&self.grid, &self.tabs, start.line, Column(0)..start.col);
-            },
-        }
-
-        Some(res)
-    }
-
-    pub(crate) fn visible_to_buffer(&self, point: Point) -> Point<usize> {
-        self.grid.visible_to_buffer(point)
-    }
-
-    /// Convert the given pixel values to a grid coordinate
-    ///
-    /// The mouse coordinates are expected to be relative to the top left. The
-    /// line and column returned are also relative to the top left.
-    ///
-    /// Returns None if the coordinates are outside the window,
-    /// padding pixels are considered inside the window
-    pub fn pixels_to_coords(&self, x: usize, y: usize) -> Option<Point> {
-        if self.size_info.contains_point(x, y, true) {
-            Some(self.size_info.pixels_to_coords(x, y))
-        } else {
-            None
-        }
-    }
-
-    /// Access to the raw grid data structure
-    ///
-    /// This is a bit of a hack; when the window is closed, the event processor
-    /// serializes the grid state to a file.
-    pub fn grid(&self) -> &Grid<Cell> {
-        &self.grid
-    }
-
-    /// Mutable access for swapping out the grid during tests
-    #[cfg(test)]
-    pub fn grid_mut(&mut self) -> &mut Grid<Cell> {
-        &mut self.grid
-    }
-
-    /// Iterate over the *renderable* cells in the terminal
-    ///
-    /// A renderable cell is any cell which has content other than the default
-    /// background color.  Cells with an alternate background color are
-    /// considered renderable as are cells with any text content.
-    pub fn renderable_cells<'b>(
-        &'b self,
-        config: &'b Config,
-        window_focused: bool,
-        metrics: font::Metrics,
-    ) -> RenderableCellsIter<'_> {
-        let alt_screen = self.mode.contains(TermMode::ALT_SCREEN);
-        let selection = self
-            .grid
-            .selection
-            .as_ref()
-            .and_then(|s| s.to_span(self, alt_screen))
-            .map(|span| span.to_locations());
-
-        let cursor = if window_focused || !config.unfocused_hollow_cursor() {
-            self.cursor_style.unwrap_or(self.default_cursor_style)
-        } else {
-            CursorStyle::HollowBlock
-        };
-
-        RenderableCellsIter::new(&self, config, selection, cursor, metrics)
-    }
-
-    /// Resize terminal to new dimensions
-    pub fn resize(&mut self, size: &SizeInfo) {
-        debug!("Resizing terminal");
-
-        // Bounds check; lots of math assumes width and height are > 0
-        if size.width as usize <= 2 * self.size_info.padding_x as usize
-            || size.height as usize <= 2 * self.size_info.padding_y as usize
-        {
-            return;
-        }
-
-        let old_cols = self.grid.num_cols();
-        let old_lines = self.grid.num_lines();
-        let mut num_cols = size.cols();
-        let mut num_lines = size.lines();
-
-        if let Some(message) = self.message_buffer.message() {
-            num_lines -= message.text(size).len();
-        }
-
-        self.size_info = *size;
-
-        if old_cols == num_cols && old_lines == num_lines {
-            debug!("Term::resize dimensions unchanged");
-            return;
-        }
-
-        self.grid.selection = None;
-        self.alt_grid.selection = None;
-        self.grid.url_highlight = None;
-
-        // Should not allow less than 1 col, causes all sorts of checks to be required.
-        if num_cols <= Column(1) {
-            num_cols = Column(2);
-        }
-
-        // Should not allow less than 1 line, causes all sorts of checks to be required.
-        if num_lines <= Line(1) {
-            num_lines = Line(2);
-        }
-
-        // Scroll up to keep cursor in terminal
-        if self.cursor.point.line >= num_lines {
-            let lines = self.cursor.point.line - num_lines + 1;
-            self.grid.scroll_up(&(Line(0)..old_lines), lines, &self.cursor.template);
-        }
-
-        // Scroll up alt grid as well
-        if self.cursor_save_alt.point.line >= num_lines {
-            let lines = self.cursor_save_alt.point.line - num_lines + 1;
-            self.alt_grid.scroll_up(&(Line(0)..old_lines), lines, &self.cursor_save_alt.template);
-        }
-
-        // Move prompt down when growing if scrollback lines are available
-        if num_lines > old_lines {
-            if self.mode.contains(TermMode::ALT_SCREEN) {
-                let growage = min(num_lines - old_lines, Line(self.alt_grid.scroll_limit()));
-                self.cursor_save.point.line += growage;
-            } else {
-                let growage = min(num_lines - old_lines, Line(self.grid.scroll_limit()));
-                self.cursor.point.line += growage;
-            }
-        }
-
-        debug!("New num_cols is {} and num_lines is {}", num_cols, num_lines);
-
-        // Resize grids to new size
-        let alt_cursor_point = if self.mode.contains(TermMode::ALT_SCREEN) {
-            &mut self.cursor_save.point
-        } else {
-            &mut self.cursor_save_alt.point
-        };
-        self.grid.resize(num_lines, num_cols, &mut self.cursor.point, &Cell::default());
-        self.alt_grid.resize(num_lines, num_cols, alt_cursor_point, &Cell::default());
-
-        // Reset scrolling region to new size
-        self.scroll_region = Line(0)..self.grid.num_lines();
-
-        // Ensure cursors are in-bounds.
-        self.cursor.point.col = min(self.cursor.point.col, num_cols - 1);
-        self.cursor.point.line = min(self.cursor.point.line, num_lines - 1);
-        self.cursor_save.point.col = min(self.cursor_save.point.col, num_cols - 1);
-        self.cursor_save.point.line = min(self.cursor_save.point.line, num_lines - 1);
-        self.cursor_save_alt.point.col = min(self.cursor_save_alt.point.col, num_cols - 1);
-        self.cursor_save_alt.point.line = min(self.cursor_save_alt.point.line, num_lines - 1);
-
-        // Recreate tabs list
-        self.tabs = TabStops::new(self.grid.num_cols(), self.tabspaces);
-    }
-
-    #[inline]
-    pub fn size_info(&self) -> &SizeInfo {
-        &self.size_info
-    }
-
-    #[inline]
-    pub fn mode(&self) -> &TermMode {
-        &self.mode
-    }
-
-    #[inline]
-    pub fn cursor(&self) -> &Cursor {
-        &self.cursor
-    }
-
-    pub fn swap_alt(&mut self) {
-        if self.alt {
-            let template = &self.cursor.template;
-            self.grid.region_mut(..).each(|c| c.reset(template));
-        }
-
-        self.alt = !self.alt;
-        ::std::mem::swap(&mut self.grid, &mut self.alt_grid);
-    }
-
-    /// Scroll screen down
-    ///
-    /// Text moves down; clear at bottom
-    /// Expects origin to be in scroll range.
-    #[inline]
-    fn scroll_down_relative(&mut self, origin: Line, mut lines: Line) {
-        trace!("Scrolling down relative: origin={}, lines={}", origin, lines);
-        lines = min(lines, self.scroll_region.end - self.scroll_region.start);
-        lines = min(lines, self.scroll_region.end - origin);
-
-        // Scroll between origin and bottom
-        let mut template = self.cursor.template;
-        template.flags = Flags::empty();
-        self.grid.scroll_down(&(origin..self.scroll_region.end), lines, &template);
-    }
-
-    /// Scroll screen up
-    ///
-    /// Text moves up; clear at top
-    /// Expects origin to be in scroll range.
-    #[inline]
-    fn scroll_up_relative(&mut self, origin: Line, lines: Line) {
-        trace!("Scrolling up relative: origin={}, lines={}", origin, lines);
-        let lines = min(lines, self.scroll_region.end - self.scroll_region.start);
-
-        // Scroll from origin to bottom less number of lines
-        let mut template = self.cursor.template;
-        template.flags = Flags::empty();
-        self.grid.scroll_up(&(origin..self.scroll_region.end), lines, &template);
-    }
-
-    fn deccolm(&mut self) {
-        // Setting 132 column font makes no sense, but run the other side effects
-        // Clear scrolling region
-        let scroll_region = Line(0)..self.grid.num_lines();
-        self.set_scrolling_region(scroll_region);
-
-        // Clear grid
-        let template = self.cursor.template;
-        self.grid.region_mut(..).each(|c| c.reset(&template));
-    }
-
-    #[inline]
-    pub fn background_color(&self) -> Rgb {
-        self.colors[NamedColor::Background]
-    }
-
-    #[inline]
-    pub fn message_buffer_mut(&mut self) -> &mut MessageBuffer {
-        &mut self.message_buffer
-    }
-
-    #[inline]
-    pub fn message_buffer(&self) -> &MessageBuffer {
-        &self.message_buffer
-    }
-
-    #[inline]
-    pub fn exit(&mut self) {
-        self.should_exit = true;
-    }
-
-    #[inline]
-    pub fn should_exit(&self) -> bool {
-        self.should_exit
-    }
-
-    #[inline]
-    pub fn set_url_highlight(&mut self, hl: RangeInclusive<index::Linear>) {
-        self.grid.url_highlight = Some(hl);
-    }
-
-    #[inline]
-    pub fn reset_url_highlight(&mut self) {
-        let mouse_mode =
-            TermMode::MOUSE_MOTION | TermMode::MOUSE_DRAG | TermMode::MOUSE_REPORT_CLICK;
-        let mouse_cursor = if self.mode().intersects(mouse_mode) {
-            MouseCursor::Default
-        } else {
-            MouseCursor::Text
-        };
-        self.set_mouse_cursor(mouse_cursor);
-
-        self.grid.url_highlight = None;
-        self.dirty = true;
-    }
-}
-
-impl ansi::TermInfo for Term {
-    #[inline]
-    fn lines(&self) -> Line {
-        self.grid.num_lines()
-    }
-
-    #[inline]
-    fn cols(&self) -> Column {
-        self.grid.num_cols()
-    }
-}
-
-impl ansi::Handler for Term {
-    /// Set the window title
-    #[inline]
-    fn set_title(&mut self, title: &str) {
-        if self.dynamic_title {
-            self.next_title = Some(title.to_owned());
-
-            #[cfg(windows)]
-            {
-                // cmd.exe in winpty: winpty incorrectly sets the title to ' ' instead of
-                // 'Alacritty' - thus we have to substitute this back to get equivalent
-                // behaviour as conpty.
-                //
-                // The starts_with check is necessary because other shells e.g. bash set a
-                // different title and don't need Alacritty prepended.
-                if !tty::is_conpty() && title.starts_with(' ') {
-                    self.next_title = Some(format!("Alacritty {}", title.trim()));
-                }
-            }
-        }
-    }
-
-    /// Set the mouse cursor
-    #[inline]
-    fn set_mouse_cursor(&mut self, cursor: MouseCursor) {
-        self.next_mouse_cursor = Some(cursor);
-    }
-
-    /// A character to be displayed
-    #[inline]
-    fn input(&mut self, c: char) {
-        // If enabled, scroll to bottom when character is received
-        if self.auto_scroll {
-            self.scroll_display(Scroll::Bottom);
-        }
-
-        if self.input_needs_wrap {
-            if !self.mode.contains(TermMode::LINE_WRAP) {
-                return;
-            }
-
-            trace!("Wrapping input");
-
-            {
-                let location = Point { line: self.cursor.point.line, col: self.cursor.point.col };
-
-                let cell = &mut self.grid[&location];
-                cell.flags.insert(cell::Flags::WRAPLINE);
-            }
-
-            if (self.cursor.point.line + 1) >= self.scroll_region.end {
-                self.linefeed();
-            } else {
-                self.cursor.point.line += 1;
-            }
-
-            self.cursor.point.col = Column(0);
-            self.input_needs_wrap = false;
-        }
-
-        // Number of cells the char will occupy
-        if let Some(width) = c.width() {
-            let num_cols = self.grid.num_cols();
-
-            // If in insert mode, first shift cells to the right.
-            if self.mode.contains(TermMode::INSERT) && self.cursor.point.col + width < num_cols {
-                let line = self.cursor.point.line;
-                let col = self.cursor.point.col;
-                let line = &mut self.grid[line];
-
-                let src = line[col..].as_ptr();
-                let dst = line[(col + width)..].as_mut_ptr();
-                unsafe {
-                    // memmove
-                    ptr::copy(src, dst, (num_cols - col - width).0);
-                }
-            }
-
-            // Handle zero-width characters
-            if width == 0 {
-                let mut col = self.cursor.point.col.0.saturating_sub(1);
-                let line = self.cursor.point.line;
-                if self.grid[line][Column(col)].flags.contains(cell::Flags::WIDE_CHAR_SPACER) {
-                    col = col.saturating_sub(1);
-                }
-                self.grid[line][Column(col)].push_extra(c);
-                return;
-            }
-
-            let cell = &mut self.grid[&self.cursor.point];
-            *cell = self.cursor.template;
-            cell.c = self.cursor.charsets[self.active_charset].map(c);
-
-            // Handle wide chars
-            if width == 2 {
-                cell.flags.insert(cell::Flags::WIDE_CHAR);
-
-                if self.cursor.point.col + 1 < num_cols {
-                    self.cursor.point.col += 1;
-                    let spacer = &mut self.grid[&self.cursor.point];
-                    *spacer = self.cursor.template;
-                    spacer.flags.insert(cell::Flags::WIDE_CHAR_SPACER);
-                }
-            }
-        }
-
-        if (self.cursor.point.col + 1) < self.grid.num_cols() {
-            self.cursor.point.col += 1;
-        } else {
-            self.input_needs_wrap = true;
-        }
-    }
-
-    #[inline]
-    fn dectest(&mut self) {
-        trace!("Dectesting");
-        let mut template = self.cursor.template;
-        template.c = 'E';
-
-        self.grid.region_mut(..).each(|c| c.reset(&template));
-    }
-
-    #[inline]
-    fn goto(&mut self, line: Line, col: Column) {
-        trace!("Going to: line={}, col={}", line, col);
-        let (y_offset, max_y) = if self.mode.contains(TermMode::ORIGIN) {
-            (self.scroll_region.start, self.scroll_region.end - 1)
-        } else {
-            (Line(0), self.grid.num_lines() - 1)
-        };
-
-        self.cursor.point.line = min(line + y_offset, max_y);
-        self.cursor.point.col = min(col, self.grid.num_cols() - 1);
-        self.input_needs_wrap = false;
-    }
-
-    #[inline]
-    fn goto_line(&mut self, line: Line) {
-        trace!("Going to line: {}", line);
-        self.goto(line, self.cursor.point.col)
-    }
-
-    #[inline]
-    fn goto_col(&mut self, col: Column) {
-        trace!("Going to column: {}", col);
-        self.goto(self.cursor.point.line, col)
-    }
-
-    #[inline]
-    fn insert_blank(&mut self, count: Column) {
-        // Ensure inserting within terminal bounds
-
-        let count = min(count, self.size_info.cols() - self.cursor.point.col);
-
-        let source = self.cursor.point.col;
-        let destination = self.cursor.point.col + count;
-        let num_cells = (self.size_info.cols() - destination).0;
-
-        let line = &mut self.grid[self.cursor.point.line];
-
-        unsafe {
-            let src = line[source..].as_ptr();
-            let dst = line[destination..].as_mut_ptr();
-
-            ptr::copy(src, dst, num_cells);
-        }
-
-        // Cells were just moved out towards the end of the line; fill in
-        // between source and dest with blanks.
-        let template = self.cursor.template;
-        for c in &mut line[source..destination] {
-            c.reset(&template);
-        }
-    }
-
-    #[inline]
-    fn move_up(&mut self, lines: Line) {
-        trace!("Moving up: {}", lines);
-        let move_to = Line(self.cursor.point.line.0.saturating_sub(lines.0));
-        self.goto(move_to, self.cursor.point.col)
-    }
-
-    #[inline]
-    fn move_down(&mut self, lines: Line) {
-        trace!("Moving down: {}", lines);
-        let move_to = self.cursor.point.line + lines;
-        self.goto(move_to, self.cursor.point.col)
-    }
-
-    #[inline]
-    fn move_forward(&mut self, cols: Column) {
-        trace!("Moving forward: {}", cols);
-        self.cursor.point.col = min(self.cursor.point.col + cols, self.grid.num_cols() - 1);
-        self.input_needs_wrap = false;
-    }
-
-    #[inline]
-    fn move_backward(&mut self, cols: Column) {
-        trace!("Moving backward: {}", cols);
-        self.cursor.point.col -= min(self.cursor.point.col, cols);
-        self.input_needs_wrap = false;
-    }
-
-    #[inline]
-    fn identify_terminal<W: io::Write>(&mut self, writer: &mut W) {
-        let _ = writer.write_all(b"\x1b[?6c");
-    }
-
-    #[inline]
-    fn device_status<W: io::Write>(&mut self, writer: &mut W, arg: usize) {
-        trace!("Reporting device status: {}", arg);
-        match arg {
-            5 => {
-                let _ = writer.write_all(b"\x1b[0n");
-            },
-            6 => {
-                let pos = self.cursor.point;
-                let _ = write!(writer, "\x1b[{};{}R", pos.line + 1, pos.col + 1);
-            },
-            _ => debug!("unknown device status query: {}", arg),
-        };
-    }
-
-    #[inline]
-    fn move_down_and_cr(&mut self, lines: Line) {
-        trace!("Moving down and cr: {}", lines);
-        let move_to = self.cursor.point.line + lines;
-        self.goto(move_to, Column(0))
-    }
-
-    #[inline]
-    fn move_up_and_cr(&mut self, lines: Line) {
-        trace!("Moving up and cr: {}", lines);
-        let move_to = Line(self.cursor.point.line.0.saturating_sub(lines.0));
-        self.goto(move_to, Column(0))
-    }
-
-    #[inline]
-    fn put_tab(&mut self, mut count: i64) {
-        trace!("Putting tab: {}", count);
-
-        while self.cursor.point.col < self.grid.num_cols() && count != 0 {
-            count -= 1;
-
-            let cell = &mut self.grid[&self.cursor.point];
-            if cell.c == ' ' {
-                cell.c = self.cursor.charsets[self.active_charset].map('\t');
-            }
-
-            loop {
-                if (self.cursor.point.col + 1) == self.grid.num_cols() {
-                    break;
-                }
-
-                self.cursor.point.col += 1;
-
-                if self.tabs[self.cursor.point.col] {
-                    break;
-                }
-            }
-        }
-
-        self.input_needs_wrap = false;
-    }
-
-    /// Backspace `count` characters
-    #[inline]
-    fn backspace(&mut self) {
-        trace!("Backspace");
-        if self.cursor.point.col > Column(0) {
-            self.cursor.point.col -= 1;
-            self.input_needs_wrap = false;
-        }
-    }
-
-    /// Carriage return
-    #[inline]
-    fn carriage_return(&mut self) {
-        trace!("Carriage return");
-        self.cursor.point.col = Column(0);
-        self.input_needs_wrap = false;
-    }
-
-    /// Linefeed
-    #[inline]
-    fn linefeed(&mut self) {
-        trace!("Linefeed");
-        let next = self.cursor.point.line + 1;
-        if next == self.scroll_region.end {
-            self.scroll_up(Line(1));
-        } else if next < self.grid.num_lines() {
-            self.cursor.point.line += 1;
-        }
-    }
-
-    /// Set current position as a tabstop
-    #[inline]
-    fn bell(&mut self) {
-        trace!("Bell");
-        self.visual_bell.ring();
-        self.next_is_urgent = Some(true);
-    }
-
-    #[inline]
-    fn substitute(&mut self) {
-        trace!("[unimplemented] Substitute");
-    }
-
-    /// Run LF/NL
-    ///
-    /// LF/NL mode has some interesting history. According to ECMA-48 4th
-    /// edition, in LINE FEED mode,
-    ///
-    /// > The execution of the formatter functions LINE FEED (LF), FORM FEED
-    /// (FF), LINE TABULATION (VT) cause only movement of the active position in
-    /// the direction of the line progression.
-    ///
-    /// In NEW LINE mode,
-    ///
-    /// > The execution of the formatter functions LINE FEED (LF), FORM FEED
-    /// (FF), LINE TABULATION (VT) cause movement to the line home position on
-    /// the following line, the following form, etc. In the case of LF this is
-    /// referred to as the New Line (NL) option.
-    ///
-    /// Additionally, ECMA-48 4th edition says that this option is deprecated.
-    /// ECMA-48 5th edition only mentions this option (without explanation)
-    /// saying that it's been removed.
-    ///
-    /// As an emulator, we need to support it since applications may still rely
-    /// on it.
-    #[inline]
-    fn newline(&mut self) {
-        self.linefeed();
-
-        if self.mode.contains(TermMode::LINE_FEED_NEW_LINE) {
-            self.carriage_return();
-        }
-    }
-
-    #[inline]
-    fn set_horizontal_tabstop(&mut self) {
-        trace!("Setting horizontal tabstop");
-        let column = self.cursor.point.col;
-        self.tabs[column] = true;
-    }
-
-    #[inline]
-    fn scroll_up(&mut self, lines: Line) {
-        let origin = self.scroll_region.start;
-        self.scroll_up_relative(origin, lines);
-    }
-
-    #[inline]
-    fn scroll_down(&mut self, lines: Line) {
-        let origin = self.scroll_region.start;
-        self.scroll_down_relative(origin, lines);
-    }
-
-    #[inline]
-    fn insert_blank_lines(&mut self, lines: Line) {
-        trace!("Inserting blank {} lines", lines);
-        if self.scroll_region.contains_(self.cursor.point.line) {
-            let origin = self.cursor.point.line;
-            self.scroll_down_relative(origin, lines);
-        }
-    }
-
-    #[inline]
-    fn delete_lines(&mut self, lines: Line) {
-        trace!("Deleting {} lines", lines);
-        if self.scroll_region.contains_(self.cursor.point.line) {
-            let origin = self.cursor.point.line;
-            self.scroll_up_relative(origin, lines);
-        }
-    }
-
-    #[inline]
-    fn erase_chars(&mut self, count: Column) {
-        trace!("Erasing chars: count={}, col={}", count, self.cursor.point.col);
-        let start = self.cursor.point.col;
-        let end = min(start + count, self.grid.num_cols());
-
-        let row = &mut self.grid[self.cursor.point.line];
-        let template = self.cursor.template; // Cleared cells have current background color set
-        for c in &mut row[start..end] {
-            c.reset(&template);
-        }
-    }
-
-    #[inline]
-    fn delete_chars(&mut self, count: Column) {
-        // Ensure deleting within terminal bounds
-        let count = min(count, self.size_info.cols());
-
-        let start = self.cursor.point.col;
-        let end = min(start + count, self.grid.num_cols() - 1);
-        let n = (self.size_info.cols() - end).0;
-
-        let line = &mut self.grid[self.cursor.point.line];
-
-        unsafe {
-            let src = line[end..].as_ptr();
-            let dst = line[start..].as_mut_ptr();
-
-            ptr::copy(src, dst, n);
-        }
-
-        // Clear last `count` cells in line. If deleting 1 char, need to delete
-        // 1 cell.
-        let template = self.cursor.template;
-        let end = self.size_info.cols() - count;
-        for c in &mut line[end..] {
-            c.reset(&template);
-        }
-    }
-
-    #[inline]
-    fn move_backward_tabs(&mut self, count: i64) {
-        trace!("Moving backward {} tabs", count);
-
-        for _ in 0..count {
-            let mut col = self.cursor.point.col;
-            for i in (0..(col.0)).rev() {
-                if self.tabs[index::Column(i)] {
-                    col = index::Column(i);
-                    break;
-                }
-            }
-            self.cursor.point.col = col;
-        }
-    }
-
-    #[inline]
-    fn move_forward_tabs(&mut self, count: i64) {
-        trace!("[unimplemented] Moving forward {} tabs", count);
-    }
-
-    #[inline]
-    fn save_cursor_position(&mut self) {
-        trace!("Saving cursor position");
-        let cursor = if self.alt { &mut self.cursor_save_alt } else { &mut self.cursor_save };
-
-        *cursor = self.cursor;
-    }
-
-    #[inline]
-    fn restore_cursor_position(&mut self) {
-        trace!("Restoring cursor position");
-        let source = if self.alt { &self.cursor_save_alt } else { &self.cursor_save };
-
-        self.cursor = *source;
-        self.cursor.point.line = min(self.cursor.point.line, self.grid.num_lines() - 1);
-        self.cursor.point.col = min(self.cursor.point.col, self.grid.num_cols() - 1);
-    }
-
-    #[inline]
-    fn clear_line(&mut self, mode: ansi::LineClearMode) {
-        trace!("Clearing line: {:?}", mode);
-        let mut template = self.cursor.template;
-        template.flags ^= template.flags;
-
-        let col = self.cursor.point.col;
-
-        match mode {
-            ansi::LineClearMode::Right => {
-                let row = &mut self.grid[self.cursor.point.line];
-                for cell in &mut row[col..] {
-                    cell.reset(&template);
-                }
-            },
-            ansi::LineClearMode::Left => {
-                let row = &mut self.grid[self.cursor.point.line];
-                for cell in &mut row[..=col] {
-                    cell.reset(&template);
-                }
-            },
-            ansi::LineClearMode::All => {
-                let row = &mut self.grid[self.cursor.point.line];
-                for cell in &mut row[..] {
-                    cell.reset(&template);
-                }
-            },
-        }
-    }
-
-    /// Set the indexed color value
-    #[inline]
-    fn set_color(&mut self, index: usize, color: Rgb) {
-        trace!("Setting color[{}] = {:?}", index, color);
-        self.colors[index] = color;
-        self.color_modified[index] = true;
-    }
-
-    /// Reset the indexed color to original value
-    #[inline]
-    fn reset_color(&mut self, index: usize) {
-        trace!("Reseting color[{}]", index);
-        self.colors[index] = self.original_colors[index];
-        self.color_modified[index] = false;
-    }
-
-    /// Set the clipboard
-    #[inline]
-    fn set_clipboard(&mut self, string: &str) {
-        Clipboard::new().and_then(|mut clipboard| clipboard.store_primary(string)).unwrap_or_else(
-            |err| {
-                warn!("Error storing selection to clipboard: {}", err);
-            },
-        );
-    }
-
-    #[inline]
-    fn clear_screen(&mut self, mode: ansi::ClearMode) {
-        trace!("Clearing screen: {:?}", mode);
-        let mut template = self.cursor.template;
-        template.flags ^= template.flags;
-
-        // Remove active selections and URL highlights
-        self.grid.selection = None;
-        self.grid.url_highlight = None;
-
-        match mode {
-            ansi::ClearMode::Below => {
-                for cell in &mut self.grid[self.cursor.point.line][self.cursor.point.col..] {
-                    cell.reset(&template);
-                }
-                if self.cursor.point.line < self.grid.num_lines() - 1 {
-                    self.grid
-                        .region_mut((self.cursor.point.line + 1)..)
-                        .each(|cell| cell.reset(&template));
-                }
-            },
-            ansi::ClearMode::All => self.grid.region_mut(..).each(|c| c.reset(&template)),
-            ansi::ClearMode::Above => {
-                // If clearing more than one line
-                if self.cursor.point.line > Line(1) {
-                    // Fully clear all lines before the current line
-                    self.grid
-                        .region_mut(..self.cursor.point.line)
-                        .each(|cell| cell.reset(&template));
-                }
-                // Clear up to the current column in the current line
-                let end = min(self.cursor.point.col + 1, self.grid.num_cols());
-                for cell in &mut self.grid[self.cursor.point.line][..end] {
-                    cell.reset(&template);
-                }
-            },
-            ansi::ClearMode::Saved => self.grid.clear_history(),
-        }
-    }
-
-    #[inline]
-    fn clear_tabs(&mut self, mode: ansi::TabulationClearMode) {
-        trace!("Clearing tabs: {:?}", mode);
-        match mode {
-            ansi::TabulationClearMode::Current => {
-                let column = self.cursor.point.col;
-                self.tabs[column] = false;
-            },
-            ansi::TabulationClearMode::All => {
-                self.tabs.clear_all();
-            },
-        }
-    }
-
-    // Reset all important fields in the term struct
-    #[inline]
-    fn reset_state(&mut self) {
-        if self.alt {
-            self.swap_alt();
-        }
-        self.input_needs_wrap = false;
-        self.next_title = None;
-        self.next_mouse_cursor = None;
-        self.cursor = Default::default();
-        self.active_charset = Default::default();
-        self.mode = Default::default();
-        self.font_size = self.original_font_size;
-        self.next_is_urgent = None;
-        self.cursor_save = Default::default();
-        self.cursor_save_alt = Default::default();
-        self.colors = self.original_colors;
-        self.color_modified = [false; color::COUNT];
-        self.cursor_style = None;
-        self.grid.reset(&Cell::default());
-        self.alt_grid.reset(&Cell::default());
-        self.scroll_region = Line(0)..self.grid.num_lines();
-    }
-
-    #[inline]
-    fn reverse_index(&mut self) {
-        trace!("Reversing index");
-        // if cursor is at the top
-        if self.cursor.point.line == self.scroll_region.start {
-            self.scroll_down(Line(1));
-        } else {
-            self.cursor.point.line -= min(self.cursor.point.line, Line(1));
-        }
-    }
-
-    /// set a terminal attribute
-    #[inline]
-    fn terminal_attribute(&mut self, attr: Attr) {
-        trace!("Setting attribute: {:?}", attr);
-        match attr {
-            Attr::Foreground(color) => self.cursor.template.fg = color,
-            Attr::Background(color) => self.cursor.template.bg = color,
-            Attr::Reset => {
-                self.cursor.template.fg = Color::Named(NamedColor::Foreground);
-                self.cursor.template.bg = Color::Named(NamedColor::Background);
-                self.cursor.template.flags = cell::Flags::empty();
-            },
-            Attr::Reverse => self.cursor.template.flags.insert(cell::Flags::INVERSE),
-            Attr::CancelReverse => self.cursor.template.flags.remove(cell::Flags::INVERSE),
-            Attr::Bold => self.cursor.template.flags.insert(cell::Flags::BOLD),
-            Attr::CancelBold => self.cursor.template.flags.remove(cell::Flags::BOLD),
-            Attr::Dim => self.cursor.template.flags.insert(cell::Flags::DIM),
-            Attr::CancelBoldDim => {
-                self.cursor.template.flags.remove(cell::Flags::BOLD | cell::Flags::DIM)
-            },
-            Attr::Italic => self.cursor.template.flags.insert(cell::Flags::ITALIC),
-            Attr::CancelItalic => self.cursor.template.flags.remove(cell::Flags::ITALIC),
-            Attr::Underscore => self.cursor.template.flags.insert(cell::Flags::UNDERLINE),
-            Attr::CancelUnderline => self.cursor.template.flags.remove(cell::Flags::UNDERLINE),
-            Attr::Hidden => self.cursor.template.flags.insert(cell::Flags::HIDDEN),
-            Attr::CancelHidden => self.cursor.template.flags.remove(cell::Flags::HIDDEN),
-            Attr::Strike => self.cursor.template.flags.insert(cell::Flags::STRIKEOUT),
-            Attr::CancelStrike => self.cursor.template.flags.remove(cell::Flags::STRIKEOUT),
-            _ => {
-                debug!("Term got unhandled attr: {:?}", attr);
-            },
-        }
-    }
-
-    #[inline]
-    fn set_mode(&mut self, mode: ansi::Mode) {
-        trace!("Setting mode: {:?}", mode);
-        match mode {
-            ansi::Mode::SwapScreenAndSetRestoreCursor => {
-                if !self.alt {
-                    self.mode.insert(TermMode::ALT_SCREEN);
-                    self.save_cursor_position();
-                    self.swap_alt();
-                    self.save_cursor_position();
-                }
-            },
-            ansi::Mode::ShowCursor => self.mode.insert(TermMode::SHOW_CURSOR),
-            ansi::Mode::CursorKeys => self.mode.insert(TermMode::APP_CURSOR),
-            ansi::Mode::ReportMouseClicks => {
-                self.mode.insert(TermMode::MOUSE_REPORT_CLICK);
-                self.set_mouse_cursor(MouseCursor::Default);
-            },
-            ansi::Mode::ReportCellMouseMotion => {
-                self.mode.insert(TermMode::MOUSE_DRAG);
-                self.set_mouse_cursor(MouseCursor::Default);
-            },
-            ansi::Mode::ReportAllMouseMotion => {
-                self.mode.insert(TermMode::MOUSE_MOTION);
-                self.set_mouse_cursor(MouseCursor::Default);
-            },
-            ansi::Mode::ReportFocusInOut => self.mode.insert(TermMode::FOCUS_IN_OUT),
-            ansi::Mode::BracketedPaste => self.mode.insert(TermMode::BRACKETED_PASTE),
-            ansi::Mode::SgrMouse => self.mode.insert(TermMode::SGR_MOUSE),
-            ansi::Mode::LineWrap => self.mode.insert(TermMode::LINE_WRAP),
-            ansi::Mode::LineFeedNewLine => self.mode.insert(TermMode::LINE_FEED_NEW_LINE),
-            ansi::Mode::Origin => self.mode.insert(TermMode::ORIGIN),
-            ansi::Mode::DECCOLM => self.deccolm(),
-            ansi::Mode::Insert => self.mode.insert(TermMode::INSERT), // heh
-            ansi::Mode::BlinkingCursor => {
-                trace!("... unimplemented mode");
-            },
-        }
-    }
-
-    #[inline]
-    fn unset_mode(&mut self, mode: ansi::Mode) {
-        trace!("Unsetting mode: {:?}", mode);
-        match mode {
-            ansi::Mode::SwapScreenAndSetRestoreCursor => {
-                if self.alt {
-                    self.mode.remove(TermMode::ALT_SCREEN);
-                    self.restore_cursor_position();
-                    self.swap_alt();
-                    self.restore_cursor_position();
-                }
-            },
-            ansi::Mode::ShowCursor => self.mode.remove(TermMode::SHOW_CURSOR),
-            ansi::Mode::CursorKeys => self.mode.remove(TermMode::APP_CURSOR),
-            ansi::Mode::ReportMouseClicks => {
-                self.mode.remove(TermMode::MOUSE_REPORT_CLICK);
-                self.set_mouse_cursor(MouseCursor::Text);
-            },
-            ansi::Mode::ReportCellMouseMotion => {
-                self.mode.remove(TermMode::MOUSE_DRAG);
-                self.set_mouse_cursor(MouseCursor::Text);
-            },
-            ansi::Mode::ReportAllMouseMotion => {
-                self.mode.remove(TermMode::MOUSE_MOTION);
-                self.set_mouse_cursor(MouseCursor::Text);
-            },
-            ansi::Mode::ReportFocusInOut => self.mode.remove(TermMode::FOCUS_IN_OUT),
-            ansi::Mode::BracketedPaste => self.mode.remove(TermMode::BRACKETED_PASTE),
-            ansi::Mode::SgrMouse => self.mode.remove(TermMode::SGR_MOUSE),
-            ansi::Mode::LineWrap => self.mode.remove(TermMode::LINE_WRAP),
-            ansi::Mode::LineFeedNewLine => self.mode.remove(TermMode::LINE_FEED_NEW_LINE),
-            ansi::Mode::Origin => self.mode.remove(TermMode::ORIGIN),
-            ansi::Mode::DECCOLM => self.deccolm(),
-            ansi::Mode::Insert => self.mode.remove(TermMode::INSERT),
-            ansi::Mode::BlinkingCursor => {
-                trace!("... unimplemented mode");
-            },
-        }
-    }
-
-    #[inline]
-    fn set_scrolling_region(&mut self, region: Range<Line>) {
-        trace!("Setting scrolling region: {:?}", region);
-        self.scroll_region.start = min(region.start, self.grid.num_lines());
-        self.scroll_region.end = min(region.end, self.grid.num_lines());
-        self.goto(Line(0), Column(0));
-    }
-
-    #[inline]
-    fn set_keypad_application_mode(&mut self) {
-        trace!("Setting keypad application mode");
-        self.mode.insert(TermMode::APP_KEYPAD);
-    }
-
-    #[inline]
-    fn unset_keypad_application_mode(&mut self) {
-        trace!("Unsetting keypad application mode");
-        self.mode.remove(TermMode::APP_KEYPAD);
-    }
-
-    #[inline]
-    fn configure_charset(&mut self, index: CharsetIndex, charset: StandardCharset) {
-        trace!("Configuring charset {:?} as {:?}", index, charset);
-        self.cursor.charsets[index] = charset;
-    }
-
-    #[inline]
-    fn set_active_charset(&mut self, index: CharsetIndex) {
-        trace!("Setting active charset {:?}", index);
-        self.active_charset = index;
-    }
-
-    #[inline]
-    fn set_cursor_style(&mut self, style: Option<CursorStyle>) {
-        trace!("Setting cursor style {:?}", style);
-        self.cursor_style = style;
-    }
-}
-
-struct TabStops {
-    tabs: Vec<bool>,
-}
-
-impl TabStops {
-    fn new(num_cols: Column, tabspaces: usize) -> TabStops {
-        TabStops {
-            tabs: IndexRange::from(Column(0)..num_cols)
-                .map(|i| (*i as usize) % tabspaces == 0)
-                .collect::<Vec<bool>>(),
-        }
-    }
-
-    fn clear_all(&mut self) {
-        unsafe {
-            ptr::write_bytes(self.tabs.as_mut_ptr(), 0, self.tabs.len());
-        }
-    }
-}
-
-impl Index<Column> for TabStops {
-    type Output = bool;
-
-    fn index(&self, index: Column) -> &bool {
-        &self.tabs[index.0]
-    }
-}
-
-impl IndexMut<Column> for TabStops {
-    fn index_mut(&mut self, index: Column) -> &mut bool {
-        self.tabs.index_mut(index.0)
-    }
-}
-
-#[cfg(test)]
-mod tests {
-    use serde_json;
-
-    use super::{Cell, SizeInfo, Term};
-    use crate::term::cell;
-
-    use crate::ansi::{self, CharsetIndex, Handler, StandardCharset};
-    use crate::config::Config;
-    use crate::grid::{Grid, Scroll};
-    use crate::index::{Column, Line, Point, Side};
-    use crate::input::FONT_SIZE_STEP;
-    use crate::message_bar::MessageBuffer;
-    use crate::selection::Selection;
-    use font::Size;
-    use std::mem;
-
-    #[test]
-    fn semantic_selection_works() {
-        let size = SizeInfo {
-            width: 21.0,
-            height: 51.0,
-            cell_width: 3.0,
-            cell_height: 3.0,
-            padding_x: 0.0,
-            padding_y: 0.0,
-            dpr: 1.0,
-        };
-        let mut term = Term::new(&Default::default(), size, MessageBuffer::new());
-        let mut grid: Grid<Cell> = Grid::new(Line(3), Column(5), 0, Cell::default());
-        for i in 0..5 {
-            for j in 0..2 {
-                grid[Line(j)][Column(i)].c = 'a';
-            }
-        }
-        grid[Line(0)][Column(0)].c = '"';
-        grid[Line(0)][Column(3)].c = '"';
-        grid[Line(1)][Column(2)].c = '"';
-        grid[Line(0)][Column(4)].flags.insert(cell::Flags::WRAPLINE);
-
-        let mut escape_chars = String::from("\"");
-
-        mem::swap(&mut term.grid, &mut grid);
-        mem::swap(&mut term.semantic_escape_chars, &mut escape_chars);
-
-        {
-            *term.selection_mut() = Some(Selection::semantic(Point { line: 2, col: Column(1) }));
-            assert_eq!(term.selection_to_string(), Some(String::from("aa")));
-        }
-
-        {
-            *term.selection_mut() = Some(Selection::semantic(Point { line: 2, col: Column(4) }));
-            assert_eq!(term.selection_to_string(), Some(String::from("aaa")));
-        }
-
-        {
-            *term.selection_mut() = Some(Selection::semantic(Point { line: 1, col: Column(1) }));
-            assert_eq!(term.selection_to_string(), Some(String::from("aaa")));
-        }
-    }
-
-    #[test]
-    fn line_selection_works() {
-        let size = SizeInfo {
-            width: 21.0,
-            height: 51.0,
-            cell_width: 3.0,
-            cell_height: 3.0,
-            padding_x: 0.0,
-            padding_y: 0.0,
-            dpr: 1.0,
-        };
-        let mut term = Term::new(&Default::default(), size, MessageBuffer::new());
-        let mut grid: Grid<Cell> = Grid::new(Line(1), Column(5), 0, Cell::default());
-        for i in 0..5 {
-            grid[Line(0)][Column(i)].c = 'a';
-        }
-        grid[Line(0)][Column(0)].c = '"';
-        grid[Line(0)][Column(3)].c = '"';
-
-        mem::swap(&mut term.grid, &mut grid);
-
-        *term.selection_mut() = Some(Selection::lines(Point { line: 0, col: Column(3) }));
-        assert_eq!(term.selection_to_string(), Some(String::from("\"aa\"a\n")));
-    }
-
-    #[test]
-    fn selecting_empty_line() {
-        let size = SizeInfo {
-            width: 21.0,
-            height: 51.0,
-            cell_width: 3.0,
-            cell_height: 3.0,
-            padding_x: 0.0,
-            padding_y: 0.0,
-            dpr: 1.0,
-        };
-        let mut term = Term::new(&Default::default(), size, MessageBuffer::new());
-        let mut grid: Grid<Cell> = Grid::new(Line(3), Column(3), 0, Cell::default());
-        for l in 0..3 {
-            if l != 1 {
-                for c in 0..3 {
-                    grid[Line(l)][Column(c)].c = 'a';
-                }
-            }
-        }
-
-        mem::swap(&mut term.grid, &mut grid);
-
-        let mut selection = Selection::simple(Point { line: 2, col: Column(0) }, Side::Left);
-        selection.update(Point { line: 0, col: Column(2) }, Side::Right);
-        *term.selection_mut() = Some(selection);
-        assert_eq!(term.selection_to_string(), Some("aaa\n\naaa\n".into()));
-    }
-
-    /// Check that the grid can be serialized back and forth losslessly
-    ///
-    /// This test is in the term module as opposed to the grid since we want to
-    /// test this property with a T=Cell.
-    #[test]
-    fn grid_serde() {
-        let template = Cell::default();
-
-        let grid: Grid<Cell> = Grid::new(Line(24), Column(80), 0, template);
-        let serialized = serde_json::to_string(&grid).expect("ser");
-        let deserialized = serde_json::from_str::<Grid<Cell>>(&serialized).expect("de");
-
-        assert_eq!(deserialized, grid);
-    }
-
-    #[test]
-    fn input_line_drawing_character() {
-        let size = SizeInfo {
-            width: 21.0,
-            height: 51.0,
-            cell_width: 3.0,
-            cell_height: 3.0,
-            padding_x: 0.0,
-            padding_y: 0.0,
-            dpr: 1.0,
-        };
-        let mut term = Term::new(&Default::default(), size, MessageBuffer::new());
-        let cursor = Point::new(Line(0), Column(0));
-        term.configure_charset(CharsetIndex::G0, StandardCharset::SpecialCharacterAndLineDrawing);
-        term.input('a');
-
-        assert_eq!(term.grid()[&cursor].c, '▒');
-    }
-
-    fn change_font_size_works(font_size: f32) {
-        let size = SizeInfo {
-            width: 21.0,
-            height: 51.0,
-            cell_width: 3.0,
-            cell_height: 3.0,
-            padding_x: 0.0,
-            padding_y: 0.0,
-            dpr: 1.0,
-        };
-        let config: Config = Default::default();
-        let mut term: Term = Term::new(&config, size, MessageBuffer::new());
-        term.change_font_size(font_size);
-
-        let expected_font_size: Size = config.font().size() + Size::new(font_size);
-        assert_eq!(term.font_size, expected_font_size);
-    }
-
-    #[test]
-    fn increase_font_size_works() {
-        change_font_size_works(10.0);
-    }
-
-    #[test]
-    fn decrease_font_size_works() {
-        change_font_size_works(-10.0);
-    }
-
-    #[test]
-    fn prevent_font_below_threshold_works() {
-        let size = SizeInfo {
-            width: 21.0,
-            height: 51.0,
-            cell_width: 3.0,
-            cell_height: 3.0,
-            padding_x: 0.0,
-            padding_y: 0.0,
-            dpr: 1.0,
-        };
-        let config: Config = Default::default();
-        let mut term: Term = Term::new(&config, size, MessageBuffer::new());
-
-        term.change_font_size(-100.0);
-
-        let expected_font_size: Size = Size::new(FONT_SIZE_STEP);
-        assert_eq!(term.font_size, expected_font_size);
-    }
-
-    #[test]
-    fn reset_font_size_works() {
-        let size = SizeInfo {
-            width: 21.0,
-            height: 51.0,
-            cell_width: 3.0,
-            cell_height: 3.0,
-            padding_x: 0.0,
-            padding_y: 0.0,
-            dpr: 1.0,
-        };
-        let config: Config = Default::default();
-        let mut term: Term = Term::new(&config, size, MessageBuffer::new());
-
-        term.change_font_size(10.0);
-        term.reset_font_size();
-
-        let expected_font_size: Size = config.font().size();
-        assert_eq!(term.font_size, expected_font_size);
-    }
-
-    #[test]
-    fn clear_saved_lines() {
-        let size = SizeInfo {
-            width: 21.0,
-            height: 51.0,
-            cell_width: 3.0,
-            cell_height: 3.0,
-            padding_x: 0.0,
-            padding_y: 0.0,
-            dpr: 1.0,
-        };
-        let config: Config = Default::default();
-        let mut term: Term = Term::new(&config, size, MessageBuffer::new());
-
-        // Add one line of scrollback
-        term.grid.scroll_up(&(Line(0)..Line(1)), Line(1), &Cell::default());
-
-        // Clear the history
-        term.clear_screen(ansi::ClearMode::Saved);
-
-        // Make sure that scrolling does not change the grid
-        let mut scrolled_grid = term.grid.clone();
-        scrolled_grid.scroll_display(Scroll::Top);
-        assert_eq!(term.grid, scrolled_grid);
-    }
-}
-
-#[cfg(all(test, feature = "bench"))]
-mod benches {
-    extern crate serde_json as json;
-    extern crate test;
-
-    use std::fs::File;
-    use std::io::Read;
-    use std::mem;
-    use std::path::Path;
-
-    use crate::config::Config;
-    use crate::grid::Grid;
-    use crate::message_bar::MessageBuffer;
-
-    use super::cell::Cell;
-    use super::{SizeInfo, Term};
-
-    fn read_string<P>(path: P) -> String
-    where
-        P: AsRef<Path>,
-    {
-        let mut res = String::new();
-        File::open(path.as_ref()).unwrap().read_to_string(&mut res).unwrap();
-
-        res
-    }
-
-    /// Benchmark for the renderable cells iterator
-    ///
-    /// The renderable cells iterator yields cells that require work to be
-    /// displayed (that is, not a an empty background cell). This benchmark
-    /// measures how long it takes to process the whole iterator.
-    ///
-    /// When this benchmark was first added, it averaged ~78usec on my macbook
-    /// pro. The total render time for this grid is anywhere between ~1500 and
-    /// ~2000usec (measured imprecisely with the visual meter).
-    #[bench]
-    fn render_iter(b: &mut test::Bencher) {
-        // Need some realistic grid state; using one of the ref files.
-        let serialized_grid = read_string(concat!(
-            env!("CARGO_MANIFEST_DIR"),
-            "/tests/ref/vim_large_window_scroll/grid.json"
-        ));
-        let serialized_size = read_string(concat!(
-            env!("CARGO_MANIFEST_DIR"),
-            "/tests/ref/vim_large_window_scroll/size.json"
-        ));
-
-        let mut grid: Grid<Cell> = json::from_str(&serialized_grid).unwrap();
-        let size: SizeInfo = json::from_str(&serialized_size).unwrap();
-
-        let config = Config::default();
-
-        let mut terminal = Term::new(&config, size, MessageBuffer::new());
-        mem::swap(&mut terminal.grid, &mut grid);
-
-        let metrics = font::Metrics {
-            descent: 0.,
-            line_height: 0.,
-            average_advance: 0.,
-            underline_position: 0.,
-            underline_thickness: 0.,
-            strikeout_position: 0.,
-            strikeout_thickness: 0.,
-        };
-
-        b.iter(|| {
-            let iter = terminal.renderable_cells(&config, false, metrics);
-            for cell in iter {
-                test::black_box(cell);
-            }
-        })
-    }
-}