Merge remote-tracking branch 'origin/master' into debug

22 files changed, 433 insertions, 191 deletions

diff --git a/Cargo.lock b/Cargo.lock
index 6f991060..59ada4ee 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -19,9 +19,9 @@ checksum = "28ae2b3dec75a406790005a200b1bd89785afc02517a00ca99ecfe093ee9e6cf"
 
 [[package]]
 name = "arc-swap"
-version = "1.3.0"
+version = "1.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e906254e445520903e7fc9da4f709886c84ae4bc4ddaf0e093188d66df4dc820"
+checksum = "34a23efe54373080cf871532e2d01076be41c4c896d32ef63af1b2dded924b03"
 
 [[package]]
 name = "autocfg"
@@ -114,9 +114,9 @@ dependencies = [
 
 [[package]]
 name = "crossterm"
-version = "0.20.0"
+version = "0.21.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c0ebde6a9dd5e331cd6c6f48253254d117642c31653baa475e394657c59c1f7d"
+checksum = "486d44227f71a1ef39554c0dc47e44b9f4139927c75043312690c3f476d1d788"
 dependencies = [
  "bitflags",
  "crossterm_winapi",
@@ -810,18 +810,18 @@ checksum = "d29ab0c6d3fc0ee92fe66e2d99f700eab17a8d57d1c1d3b748380fb20baa78cd"
 
 [[package]]
 name = "serde"
-version = "1.0.127"
+version = "1.0.129"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f03b9878abf6d14e6779d3f24f07b2cfa90352cfec4acc5aab8f1ac7f146fae8"
+checksum = "d1f72836d2aa753853178eda473a3b9d8e4eefdaf20523b919677e6de489f8f1"
 dependencies = [
  "serde_derive",
 ]
 
 [[package]]
 name = "serde_derive"
-version = "1.0.127"
+version = "1.0.129"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a024926d3432516606328597e0f224a51355a493b49fdd67e9209187cbe55ecc"
+checksum = "e57ae87ad533d9a56427558b516d0adac283614e347abf85b0dc0cbbf0a249f3"
 dependencies = [
  "proc-macro2",
  "quote",
diff --git a/helix-core/src/lib.rs b/helix-core/src/lib.rs
index 2823959f..be01c302 100644
--- a/helix-core/src/lib.rs
+++ b/helix-core/src/lib.rs
@@ -11,6 +11,7 @@ pub mod macros;
 pub mod match_brackets;
 pub mod movement;
 pub mod object;
+pub mod path;
 mod position;
 pub mod register;
 pub mod search;
diff --git a/helix-core/src/path.rs b/helix-core/src/path.rs
new file mode 100644
index 00000000..6c37cfa1
--- /dev/null
+++ b/helix-core/src/path.rs
@@ -0,0 +1,92 @@
+use std::path::{Component, Path, PathBuf};
+
+/// Replaces users home directory from `path` with tilde `~` if the directory
+/// is available, otherwise returns the path unchanged.
+pub fn fold_home_dir(path: &Path) -> PathBuf {
+    if let Ok(home) = super::home_dir() {
+        if path.starts_with(&home) {
+            // it's ok to unwrap, the path starts with home dir
+            return PathBuf::from("~").join(path.strip_prefix(&home).unwrap());
+        }
+    }
+
+    path.to_path_buf()
+}
+
+/// Expands tilde `~` into users home directory if avilable, otherwise returns the path
+/// unchanged. The tilde will only be expanded when present as the first component of the path
+/// and only slash follows it.
+pub fn expand_tilde(path: &Path) -> PathBuf {
+    let mut components = path.components().peekable();
+    if let Some(Component::Normal(c)) = components.peek() {
+        if c == &"~" {
+            if let Ok(home) = super::home_dir() {
+                // it's ok to unwrap, the path starts with `~`
+                return home.join(path.strip_prefix("~").unwrap());
+            }
+        }
+    }
+
+    path.to_path_buf()
+}
+
+/// Normalize a path, removing things like `.` and `..`.
+///
+/// CAUTION: This does not resolve symlinks (unlike
+/// [`std::fs::canonicalize`]). This may cause incorrect or surprising
+/// behavior at times. This should be used carefully. Unfortunately,
+/// [`std::fs::canonicalize`] can be hard to use correctly, since it can often
+/// fail, or on Windows returns annoying device paths. This is a problem Cargo
+/// needs to improve on.
+/// Copied from cargo: <https://github.com/rust-lang/cargo/blob/070e459c2d8b79c5b2ac5218064e7603329c92ae/crates/cargo-util/src/paths.rs#L81>
+pub fn get_normalized_path(path: &Path) -> PathBuf {
+    let path = expand_tilde(path);
+    let mut components = path.components().peekable();
+    let mut ret = if let Some(c @ Component::Prefix(..)) = components.peek().cloned() {
+        components.next();
+        PathBuf::from(c.as_os_str())
+    } else {
+        PathBuf::new()
+    };
+
+    for component in components {
+        match component {
+            Component::Prefix(..) => unreachable!(),
+            Component::RootDir => {
+                ret.push(component.as_os_str());
+            }
+            Component::CurDir => {}
+            Component::ParentDir => {
+                ret.pop();
+            }
+            Component::Normal(c) => {
+                ret.push(c);
+            }
+        }
+    }
+    ret
+}
+
+/// Returns the canonical, absolute form of a path with all intermediate components normalized.
+///
+/// This function is used instead of `std::fs::canonicalize` because we don't want to verify
+/// here if the path exists, just normalize it's components.
+pub fn get_canonicalized_path(path: &Path) -> std::io::Result<PathBuf> {
+    let path = if path.is_relative() {
+        std::env::current_dir().map(|current_dir| current_dir.join(path))?
+    } else {
+        path.to_path_buf()
+    };
+
+    Ok(get_normalized_path(path.as_path()))
+}
+
+pub fn get_relative_path(path: &Path) -> PathBuf {
+    let path = if path.is_absolute() {
+        let cwdir = std::env::current_dir().expect("couldn't determine current directory");
+        path.strip_prefix(cwdir).unwrap_or(path)
+    } else {
+        path
+    };
+    fold_home_dir(path)
+}
diff --git a/helix-lsp/src/transport.rs b/helix-lsp/src/transport.rs
index 0710b449..5be694c8 100644
--- a/helix-lsp/src/transport.rs
+++ b/helix-lsp/src/transport.rs
@@ -222,10 +222,13 @@ impl Transport {
         loop {
             match Self::recv_server_message(&mut server_stdout, &mut recv_buffer).await {
                 Ok(msg) => {
-                    transport
-                        .process_server_message(&client_tx, msg)
-                        .await
-                        .unwrap();
+                    match transport.process_server_message(&client_tx, msg).await {
+                        Ok(_) => {}
+                        Err(err) => {
+                            error!("err: <- {:?}", err);
+                            break;
+                        }
+                    };
                 }
                 Err(err) => {
                     error!("err: <- {:?}", err);
@@ -254,10 +257,15 @@ impl Transport {
         mut client_rx: UnboundedReceiver<Payload>,
     ) {
         while let Some(msg) = client_rx.recv().await {
-            transport
+            match transport
                 .send_payload_to_server(&mut server_stdin, msg)
                 .await
-                .unwrap()
+            {
+                Ok(_) => {}
+                Err(err) => {
+                    error!("err: <- {:?}", err);
+                }
+            }
         }
     }
 }
diff --git a/helix-term/Cargo.toml b/helix-term/Cargo.toml
index c0b2cfe5..6e9c0daf 100644
--- a/helix-term/Cargo.toml
+++ b/helix-term/Cargo.toml
@@ -32,7 +32,7 @@ once_cell = "1.8"
 tokio = { version = "1", features = ["rt", "rt-multi-thread", "io-util", "io-std", "time", "process", "macros", "fs", "parking_lot"] }
 num_cpus = "1"
 tui = { path = "../helix-tui", package = "helix-tui", default-features = false, features = ["crossterm"] }
-crossterm = { version = "0.20", features = ["event-stream"] }
+crossterm = { version = "0.21", features = ["event-stream"] }
 signal-hook = "0.3"
 tokio-stream = "0.1"
 futures-util = { version = "0.3", features = ["std", "async-await"], default-features = false }
diff --git a/helix-term/src/commands.rs b/helix-term/src/commands.rs
index ecdd2e6d..6ba244ee 100644
--- a/helix-term/src/commands.rs
+++ b/helix-term/src/commands.rs
@@ -2006,7 +2006,24 @@ mod cmd {
         Ok(())
     }
 
-    fn debug_set_logpoint(
+    fn vsplit(
+        cx: &mut compositor::Context,
+        args: &[&str],
+        _event: PromptEvent,
+    ) -> anyhow::Result<()> {
+        let (_, doc) = current!(cx.editor);
+        let id = doc.id();
+
+        if let Some(path) = args.get(0) {
+            cx.editor.open(path.into(), Action::VerticalSplit)?;
+        } else {
+            cx.editor.switch(id, Action::VerticalSplit);
+        }
+
+        Ok(())
+    }
+
+    fn hsplit(
         cx: &mut compositor::Context,
         args: &[&str],
         _event: PromptEvent,
@@ -2051,6 +2068,24 @@ mod cmd {
             _ => Some(args.remove(0)),
         };
         dap_start_impl(&mut cx.editor, name, address, Some(args));
+
+        Ok(())
+    }
+
+    fn debug_set_logpoint(
+        cx: &mut compositor::Context,
+        args: &[&str],
+        _event: PromptEvent,
+    ) -> anyhow::Result<()> {
+        let (_, doc) = current!(cx.editor);
+        let id = doc.id();
+
+        if let Some(path) = args.get(0) {
+            cx.editor.open(path.into(), Action::HorizontalSplit)?;
+        } else {
+            cx.editor.switch(id, Action::HorizontalSplit);
+        }
+
         Ok(())
     }
 
@@ -2327,6 +2362,20 @@ mod cmd {
             doc: "Make current breakpoint a log point.",
             fun: debug_set_logpoint,
             completer: None,
+        },
+        TypableCommand {
+            name: "vsplit",
+            alias: Some("vsp"),
+            doc: "Open the file in a vertical split.",
+            fun: vsplit,
+            completer: Some(completers::filename),
+        },
+        TypableCommand {
+            name: "hsplit",
+            alias: Some("sp"),
+            doc: "Open the file in a horizontal split.",
+            fun: hsplit,
+            completer: Some(completers::filename),
         }
     ];
 
@@ -2429,16 +2478,16 @@ fn buffer_picker(cx: &mut Context) {
         cx.editor
             .documents
             .iter()
-            .map(|(id, doc)| (id, doc.relative_path()))
+            .map(|(id, doc)| (id, doc.path().cloned()))
             .collect(),
         move |(id, path): &(DocumentId, Option<PathBuf>)| {
-            // format_fn
+            let path = path.as_deref().map(helix_core::path::get_relative_path);
             match path.as_ref().and_then(|path| path.to_str()) {
                 Some(path) => {
                     if *id == current {
-                        format!("{} (*)", path).into()
+                        format!("{} (*)", &path).into()
                     } else {
-                        path.into()
+                        path.to_owned().into()
                     }
                 }
                 None => "[scratch buffer]".into(),
@@ -2454,7 +2503,7 @@ fn buffer_picker(cx: &mut Context) {
                 .selection(view_id)
                 .primary()
                 .cursor_line(doc.text().slice(..));
-            Some((path.clone()?, Some(line)))
+            Some((path.clone()?, Some((line, line))))
         },
     );
     cx.push_layer(Box::new(picker));
@@ -2519,13 +2568,18 @@ fn symbol_picker(cx: &mut Context) {
                         if let Some(range) =
                             lsp_range_to_range(doc.text(), symbol.location.range, offset_encoding)
                         {
-                            doc.set_selection(view.id, Selection::single(range.anchor, range.head));
+                            // we flip the range so that the cursor sits on the start of the symbol
+                            // (for example start of the function).
+                            doc.set_selection(view.id, Selection::single(range.head, range.anchor));
                             align_view(doc, view, Align::Center);
                         }
                     },
                     move |_editor, symbol| {
                         let path = symbol.location.uri.to_file_path().unwrap();
-                        let line = Some(symbol.location.range.start.line as usize);
+                        let line = Some((
+                            symbol.location.range.start.line as usize,
+                            symbol.location.range.end.line as usize,
+                        ));
                         Some((path, line))
                     },
                 );
@@ -2958,7 +3012,10 @@ fn goto_impl(
                 },
                 |_editor, location| {
                     let path = location.uri.to_file_path().unwrap();
-                    let line = Some(location.range.start.line as usize);
+                    let line = Some((
+                        location.range.start.line as usize,
+                        location.range.end.line as usize,
+                    ));
                     Some((path, line))
                 },
             );
diff --git a/helix-term/src/ui/editor.rs b/helix-term/src/ui/editor.rs
index 272c8ac1..92a631ed 100644
--- a/helix-term/src/ui/editor.rs
+++ b/helix-term/src/ui/editor.rs
@@ -112,13 +112,11 @@ impl EditorView {
 
         self.render_diagnostics(doc, view, inner, surface, theme, debugger);
 
-        let area = Rect::new(
-            view.area.x,
-            view.area.y + view.area.height.saturating_sub(1),
-            view.area.width,
-            1,
-        );
-        self.render_statusline(doc, view, area, surface, theme, is_focused);
+        let statusline_area = view
+            .area
+            .clip_top(view.area.height.saturating_sub(1))
+            .clip_bottom(1); // -1 from bottom to remove commandline
+        self.render_statusline(doc, view, statusline_area, surface, theme, is_focused);
     }
 
     /// Get syntax highlights for a document in a view represented by the first line
@@ -201,7 +199,9 @@ impl EditorView {
             .find_scope_index("diagnostic")
             .or_else(|| theme.find_scope_index("ui.cursor"))
             .or_else(|| theme.find_scope_index("ui.selection"))
-            .expect("no selection scope found!");
+            .expect(
+                "at least one of the following scopes must be defined in the theme: `diagnostic`, `ui.cursor`, or `ui.selection`",
+            );
 
         doc.diagnostics()
             .iter()
@@ -226,7 +226,7 @@ impl EditorView {
 
         let selection_scope = theme
             .find_scope_index("ui.selection")
-            .expect("no selection scope found!");
+            .expect("could not find `ui.selection` scope in the theme!");
         let base_cursor_scope = theme
             .find_scope_index("ui.cursor")
             .unwrap_or(selection_scope);
@@ -598,12 +598,7 @@ impl EditorView {
         let width = 80.min(viewport.width);
         let height = 15.min(viewport.height);
         paragraph.render(
-            Rect::new(
-                viewport.right() - width,
-                viewport.y as u16 + 1,
-                width,
-                height,
-            ),
+            Rect::new(viewport.right() - width, viewport.y + 1, width, height),
             surface,
         );
     }
@@ -642,7 +637,7 @@ impl EditorView {
             theme.get("ui.statusline.inactive")
         };
         // statusline
-        surface.set_style(Rect::new(viewport.x, viewport.y, viewport.width, 1), style);
+        surface.set_style(viewport.with_height(1), style);
         if is_focused {
             surface.set_string(viewport.x + 1, viewport.y, mode, style);
         }
@@ -1071,8 +1066,7 @@ impl Component for EditorView {
         surface.set_style(area, cx.editor.theme.get("ui.background"));
 
         // if the terminal size suddenly changed, we need to trigger a resize
-        cx.editor
-            .resize(Rect::new(area.x, area.y, area.width, area.height - 1)); // - 1 to account for commandline
+        cx.editor.resize(area.clip_bottom(1)); // -1 from bottom for commandline
 
         for (view, is_focused) in cx.editor.tree.views() {
             let doc = cx.editor.document(view.doc).unwrap();
diff --git a/helix-term/src/ui/info.rs b/helix-term/src/ui/info.rs
index 75d978da..55b0e65d 100644
--- a/helix-term/src/ui/info.rs
+++ b/helix-term/src/ui/info.rs
@@ -6,8 +6,12 @@ use tui::widgets::{Block, Borders, Paragraph, Widget};
 
 impl Component for Info {
     fn render(&mut self, viewport: Rect, surface: &mut Surface, cx: &mut Context) {
-        let text_style = cx.editor.theme.get("ui.text.focus");
-        let popup_style = text_style.patch(cx.editor.theme.get("ui.popup"));
+        let get_theme = |style, fallback| {
+            let theme = &cx.editor.theme;
+            theme.try_get(style).unwrap_or_else(|| theme.get(fallback))
+        };
+        let text_style = get_theme("ui.info.text", "ui.text");
+        let popup_style = text_style.patch(get_theme("ui.info", "ui.popup"));
 
         // Calculate the area of the terminal to modify. Because we want to
         // render at the bottom right, we use the viewport's width and height
diff --git a/helix-term/src/ui/markdown.rs b/helix-term/src/ui/markdown.rs
index b7e29f21..28542cdc 100644
--- a/helix-term/src/ui/markdown.rs
+++ b/helix-term/src/ui/markdown.rs
@@ -13,7 +13,7 @@ use helix_core::{
     Rope,
 };
 use helix_view::{
-    graphics::{Color, Rect, Style},
+    graphics::{Color, Margin, Rect, Style},
     Theme,
 };
 
@@ -207,8 +207,11 @@ impl Component for Markdown {
             .wrap(Wrap { trim: false })
             .scroll((cx.scroll.unwrap_or_default() as u16, 0));
 
-        let area = Rect::new(area.x + 1, area.y + 1, area.width - 2, area.height - 2);
-        par.render(area, surface);
+        let margin = Margin {
+            vertical: 1,
+            horizontal: 1,
+        };
+        par.render(area.inner(&margin), surface);
     }
 
     fn required_size(&mut self, viewport: (u16, u16)) -> Option<(u16, u16)> {
diff --git a/helix-term/src/ui/menu.rs b/helix-term/src/ui/menu.rs
index 3e63db35..a56cf19b 100644
--- a/helix-term/src/ui/menu.rs
+++ b/helix-term/src/ui/menu.rs
@@ -304,14 +304,6 @@ impl<T: Item + 'static> Component for Menu<T> {
             },
         );
 
-        // // TODO: set bg for the whole row if selected
-        // if line == self.cursor {
-        //     surface.set_style(
-        //         Rect::new(area.x, area.y + i as u16, area.width - 1, 1),
-        //         selected,
-        //     )
-        // }
-
         for (i, _) in (scroll..(scroll + win_height).min(len)).enumerate() {
             let is_marked = i >= scroll_line && i < scroll_line + scroll_height;
 
diff --git a/helix-term/src/ui/mod.rs b/helix-term/src/ui/mod.rs
index 390f1a66..e4871312 100644
--- a/helix-term/src/ui/mod.rs
+++ b/helix-term/src/ui/mod.rs
@@ -208,7 +208,7 @@ pub mod completers {
         use std::path::Path;
 
         let is_tilde = input.starts_with('~') && input.len() == 1;
-        let path = helix_view::document::expand_tilde(Path::new(input));
+        let path = helix_core::path::expand_tilde(Path::new(input));
 
         let (dir, file_name) = if input.ends_with('/') {
             (path, None)
diff --git a/helix-term/src/ui/picker.rs b/helix-term/src/ui/picker.rs
index 2cc25c24..ef2c434c 100644
--- a/helix-term/src/ui/picker.rs
+++ b/helix-term/src/ui/picker.rs
@@ -17,16 +17,15 @@ use std::{borrow::Cow, collections::HashMap, path::PathBuf};
 use crate::ui::{Prompt, PromptEvent};
 use helix_core::Position;
 use helix_view::{
-    document::canonicalize_path,
     editor::Action,
-    graphics::{Color, CursorKind, Rect, Style},
+    graphics::{Color, CursorKind, Margin, Rect, Style},
     Document, Editor,
 };
 
 pub const MIN_SCREEN_WIDTH_FOR_PREVIEW: u16 = 80;
 
 /// File path and line number (used to align and highlight a line)
-type FileLocation = (PathBuf, Option<usize>);
+type FileLocation = (PathBuf, Option<(usize, usize)>);
 
 pub struct FilePicker<T> {
     picker: Picker<T>,
@@ -54,7 +53,11 @@ impl<T> FilePicker<T> {
         self.picker
             .selection()
             .and_then(|current| (self.file_fn)(editor, current))
-            .and_then(|(path, line)| canonicalize_path(&path).ok().zip(Some(line)))
+            .and_then(|(path, line)| {
+                helix_core::path::get_canonicalized_path(&path)
+                    .ok()
+                    .zip(Some(line))
+            })
     }
 
     fn calculate_preview(&mut self, editor: &Editor) {
@@ -90,34 +93,40 @@ impl<T: 'static> Component for FilePicker<T> {
             area.width
         };
 
-        let picker_area = Rect::new(area.x, area.y, picker_width, area.height);
+        let picker_area = area.with_width(picker_width);
         self.picker.render(picker_area, surface, cx);
 
         if !render_preview {
             return;
         }
 
-        let preview_area = Rect::new(area.x + picker_width, area.y, area.width / 2, area.height);
+        let preview_area = area.clip_left(picker_width);
 
         // don't like this but the lifetime sucks
         let block = Block::default().borders(Borders::ALL);
 
         // calculate the inner area inside the box
-        let mut inner = block.inner(preview_area);
+        let inner = block.inner(preview_area);
         // 1 column gap on either side
-        inner.x += 1;
-        inner.width = inner.width.saturating_sub(2);
+        let margin = Margin {
+            vertical: 0,
+            horizontal: 1,
+        };
+        let inner = inner.inner(&margin);
 
         block.render(preview_area, surface);
 
-        if let Some((doc, line)) = self.current_file(cx.editor).and_then(|(path, line)| {
+        if let Some((doc, line)) = self.current_file(cx.editor).and_then(|(path, range)| {
             cx.editor
                 .document_by_path(&path)
                 .or_else(|| self.preview_cache.get(&path))
-                .zip(Some(line))
+                .zip(Some(range))
         }) {
             // align to middle
-            let first_line = line.unwrap_or(0).saturating_sub(inner.height as usize / 2);
+            let first_line = line
+                .map(|(start, _)| start)
+                .unwrap_or(0)
+                .saturating_sub(inner.height as usize / 2);
             let offset = Position::new(first_line, 0);
 
             let highlights = EditorView::doc_syntax_highlights(
@@ -137,12 +146,21 @@ impl<T: 'static> Component for FilePicker<T> {
             );
 
             // highlight the line
-            if let Some(line) = line {
-                for x in inner.left()..inner.right() {
-                    surface
-                        .get_mut(x, inner.y + line.saturating_sub(first_line) as u16)
-                        .set_style(cx.editor.theme.get("ui.selection"));
-                }
+            if let Some((start, end)) = line {
+                let offset = start.saturating_sub(first_line) as u16;
+                surface.set_style(
+                    Rect::new(
+                        inner.x,
+                        inner.y + offset,
+                        inner.width,
+                        (end.saturating_sub(start) as u16 + 1)
+                            .min(inner.height.saturating_sub(offset)),
+                    ),
+                    cx.editor
+                        .theme
+                        .try_get("ui.highlight")
+                        .unwrap_or_else(|| cx.editor.theme.get("ui.selection")),
+                );
             }
         }
     }
@@ -282,15 +300,11 @@ impl<T> Picker<T> {
 //  - score all the names in relation to input
 
 fn inner_rect(area: Rect) -> Rect {
-    let padding_vertical = area.height * 10 / 100;
-    let padding_horizontal = area.width * 10 / 100;
-
-    Rect::new(
-        area.x + padding_horizontal,
-        area.y + padding_vertical,
-        area.width - padding_horizontal * 2,
-        area.height - padding_vertical * 2,
-    )
+    let margin = Margin {
+        vertical: area.height * 10 / 100,
+        horizontal: area.width * 10 / 100,
+    };
+    area.inner(&margin)
 }
 
 impl<T: 'static> Component for Picker<T> {
@@ -410,7 +424,7 @@ impl<T: 'static> Component for Picker<T> {
 
         // -- Render the input bar:
 
-        let area = Rect::new(inner.x + 1, inner.y, inner.width - 1, 1);
+        let area = inner.clip_left(1).with_height(1);
 
         let count = format!("{}/{}", self.matches.len(), self.options.len());
         surface.set_stringn(
@@ -434,8 +448,8 @@ impl<T: 'static> Component for Picker<T> {
         }
 
         // -- Render the contents:
-        // subtract the area of the prompt (-2) and current item marker " > " (-3)
-        let inner = Rect::new(inner.x + 3, inner.y + 2, inner.width - 3, inner.height - 2);
+        // subtract area of prompt from top and current item marker " > " from left
+        let inner = inner.clip_top(2).clip_left(3);
 
         let selected = cx.editor.theme.get("ui.text.focus");
 
@@ -474,7 +488,7 @@ impl<T: 'static> Component for Picker<T> {
         let inner = block.inner(area);
 
         // prompt area
-        let area = Rect::new(inner.x + 1, inner.y, inner.width - 1, 1);
+        let area = inner.clip_left(1).with_height(1);
 
         self.prompt.cursor(area, editor)
     }
diff --git a/helix-tui/Cargo.toml b/helix-tui/Cargo.toml
index 5f22b7c8..80a772a4 100644
--- a/helix-tui/Cargo.toml
+++ b/helix-tui/Cargo.toml
@@ -19,7 +19,7 @@ default = ["crossterm"]
 bitflags = "1.3"
 cassowary = "0.3"
 unicode-segmentation = "1.8"
-crossterm = { version = "0.20", optional = true }
+crossterm = { version = "0.21", optional = true }
 serde = { version = "1", "optional" = true, features = ["derive"]}
 helix-view = { version = "0.4", path = "../helix-view", features = ["term"] }
 helix-core = { version = "0.4", path = "../helix-core" }
diff --git a/helix-view/Cargo.toml b/helix-view/Cargo.toml
index b3991584..1f55a36b 100644
--- a/helix-view/Cargo.toml
+++ b/helix-view/Cargo.toml
@@ -19,7 +19,7 @@ anyhow = "1"
 helix-core = { version = "0.4", path = "../helix-core" }
 helix-lsp = { version = "0.4", path = "../helix-lsp"}
 helix-dap = { version = "0.4", path = "../helix-dap"}
-crossterm = { version = "0.20", optional = true }
+crossterm = { version = "0.21", optional = true }
 
 # Conversion traits
 once_cell = "1.8"
diff --git a/helix-view/src/clipboard.rs b/helix-view/src/clipboard.rs
index 9dd86da7..a11224ac 100644
--- a/helix-view/src/clipboard.rs
+++ b/helix-view/src/clipboard.rs
@@ -84,7 +84,7 @@ pub fn get_clipboard_provider() -> Box<dyn ClipboardProvider> {
         // FIXME: check performance of is_exit_success
         command_provider! {
             paste => "xsel", "-o", "-b";
-            copy => "xsel", "--nodetach", "-i", "-b";
+            copy => "xsel", "-i", "-b";
             primary_paste => "xsel", "-o";
             primary_copy => "xsel", "-i";
         }
diff --git a/helix-view/src/document.rs b/helix-view/src/document.rs
index ff0c8bf4..a238644a 100644
--- a/helix-view/src/document.rs
+++ b/helix-view/src/document.rs
@@ -4,7 +4,7 @@ use std::cell::Cell;
 use std::collections::HashMap;
 use std::fmt::Display;
 use std::future::Future;
-use std::path::{Component, Path, PathBuf};
+use std::path::{Path, PathBuf};
 use std::str::FromStr;
 use std::sync::Arc;
 
@@ -317,87 +317,6 @@ where
     }
 }
 
-/// Expands tilde `~` into users home directory if avilable, otherwise returns the path
-/// unchanged. The tilde will only be expanded when present as the first component of the path
-/// and only slash follows it.
-pub fn expand_tilde(path: &Path) -> PathBuf {
-    let mut components = path.components().peekable();
-    if let Some(Component::Normal(c)) = components.peek() {
-        if c == &"~" {
-            if let Ok(home) = helix_core::home_dir() {
-                // it's ok to unwrap, the path starts with `~`
-                return home.join(path.strip_prefix("~").unwrap());
-            }
-        }
-    }
-
-    path.to_path_buf()
-}
-
-/// Replaces users home directory from `path` with tilde `~` if the directory
-/// is available, otherwise returns the path unchanged.
-pub fn fold_home_dir(path: &Path) -> PathBuf {
-    if let Ok(home) = helix_core::home_dir() {
-        if path.starts_with(&home) {
-            // it's ok to unwrap, the path starts with home dir
-            return PathBuf::from("~").join(path.strip_prefix(&home).unwrap());
-        }
-    }
-
-    path.to_path_buf()
-}
-
-/// Normalize a path, removing things like `.` and `..`.
-///
-/// CAUTION: This does not resolve symlinks (unlike
-/// [`std::fs::canonicalize`]). This may cause incorrect or surprising
-/// behavior at times. This should be used carefully. Unfortunately,
-/// [`std::fs::canonicalize`] can be hard to use correctly, since it can often
-/// fail, or on Windows returns annoying device paths. This is a problem Cargo
-/// needs to improve on.
-/// Copied from cargo: <https://github.com/rust-lang/cargo/blob/070e459c2d8b79c5b2ac5218064e7603329c92ae/crates/cargo-util/src/paths.rs#L81>
-pub fn normalize_path(path: &Path) -> PathBuf {
-    let path = expand_tilde(path);
-    let mut components = path.components().peekable();
-    let mut ret = if let Some(c @ Component::Prefix(..)) = components.peek().cloned() {
-        components.next();
-        PathBuf::from(c.as_os_str())
-    } else {
-        PathBuf::new()
-    };
-
-    for component in components {
-        match component {
-            Component::Prefix(..) => unreachable!(),
-            Component::RootDir => {
-                ret.push(component.as_os_str());
-            }
-            Component::CurDir => {}
-            Component::ParentDir => {
-                ret.pop();
-            }
-            Component::Normal(c) => {
-                ret.push(c);
-            }
-        }
-    }
-    ret
-}
-
-/// Returns the canonical, absolute form of a path with all intermediate components normalized.
-///
-/// This function is used instead of `std::fs::canonicalize` because we don't want to verify
-/// here if the path exists, just normalize it's components.
-pub fn canonicalize_path(path: &Path) -> std::io::Result<PathBuf> {
-    let path = if path.is_relative() {
-        std::env::current_dir().map(|current_dir| current_dir.join(path))?
-    } else {
-        path.to_path_buf()
-    };
-
-    Ok(normalize_path(&path))
-}
-
 use helix_lsp::lsp;
 use url::Url;
 
@@ -631,7 +550,7 @@ impl Document {
     }
 
     pub fn set_path(&mut self, path: &Path) -> Result<(), std::io::Error> {
-        let path = canonicalize_path(path)?;
+        let path = helix_core::path::get_canonicalized_path(path)?;
 
         // if parent doesn't exist we still want to open the document
         // and error out when document is saved
@@ -936,15 +855,9 @@ impl Document {
     }
 
     pub fn relative_path(&self) -> Option<PathBuf> {
-        let cwdir = std::env::current_dir().expect("couldn't determine current directory");
-
-        self.path.as_ref().map(|path| {
-            let mut path = path.as_path();
-            if path.is_absolute() {
-                path = path.strip_prefix(cwdir).unwrap_or(path)
-            };
-            fold_home_dir(path)
-        })
+        self.path
+            .as_deref()
+            .map(helix_core::path::get_relative_path)
     }
 
     // pub fn slice<R>(&self, range: R) -> RopeSlice where R: RangeBounds {
diff --git a/helix-view/src/editor.rs b/helix-view/src/editor.rs
index 17319327..295dfc0e 100644
--- a/helix-view/src/editor.rs
+++ b/helix-view/src/editor.rs
@@ -238,7 +238,7 @@ impl Editor {
     }
 
     pub fn open(&mut self, path: PathBuf, action: Action) -> Result<DocumentId, Error> {
-        let path = crate::document::canonicalize_path(&path)?;
+        let path = helix_core::path::get_canonicalized_path(&path)?;
 
         let id = self
             .documents()
diff --git a/helix-view/src/graphics.rs b/helix-view/src/graphics.rs
index 9a7a86c3..66013ee5 100644
--- a/helix-view/src/graphics.rs
+++ b/helix-view/src/graphics.rs
@@ -24,7 +24,7 @@ pub struct Margin {
 }

 

 /// A simple rectangle used in the computation of the layout and to give widgets an hint about the

-/// area they are supposed to render to.

+/// area they are supposed to render to. (x, y) = (0, 0) is at the top left corner of the screen.

 #[derive(Debug, Clone, Copy, Hash, PartialEq, Eq)]

 pub struct Rect {

     pub x: u16,

@@ -92,6 +92,57 @@ impl Rect {
         self.y.saturating_add(self.height)

     }

 

+    // Returns a new Rect with width reduced from the left side.

+    // This changes the `x` coordinate and clamps it to the right

+    // edge of the original Rect.

+    pub fn clip_left(self, width: u16) -> Rect {

+        let width = std::cmp::min(width, self.width);

+        Rect {

+            x: self.x.saturating_add(width),

+            width: self.width.saturating_sub(width),

+            ..self

+        }

+    }

+

+    // Returns a new Rect with width reduced from the right side.

+    // This does _not_ change the `x` coordinate.

+    pub fn clip_right(self, width: u16) -> Rect {

+        Rect {

+            width: self.width.saturating_sub(width),

+            ..self

+        }

+    }

+

+    // Returns a new Rect with height reduced from the top.

+    // This changes the `y` coordinate and clamps it to the bottom

+    // edge of the original Rect.

+    pub fn clip_top(self, height: u16) -> Rect {

+        let height = std::cmp::min(height, self.height);

+        Rect {

+            y: self.y.saturating_add(height),

+            height: self.height.saturating_sub(height),

+            ..self

+        }

+    }

+

+    // Returns a new Rect with height reduced from the bottom.

+    // This does _not_ change the `y` coordinate.

+    pub fn clip_bottom(self, height: u16) -> Rect {

+        Rect {

+            height: self.height.saturating_sub(height),

+            ..self

+        }

+    }

+

+    pub fn with_height(self, height: u16) -> Rect {

+        // new height may make area > u16::max_value, so use new()

+        Self::new(self.x, self.y, self.width, height)

+    }

+

+    pub fn with_width(self, width: u16) -> Rect {

+        Self::new(self.x, self.y, width, self.height)

+    }

+

     pub fn inner(self, margin: &Margin) -> Rect {

         if self.width < 2 * margin.horizontal || self.height < 2 * margin.vertical {

             Rect::default()

@@ -495,6 +546,40 @@ mod tests {
         assert_eq!(rect.height, 100);

     }

 

+    #[test]

+    fn test_rect_chop_from_left() {

+        let rect = Rect::new(0, 0, 20, 30);

+        assert_eq!(Rect::new(10, 0, 10, 30), rect.clip_left(10));

+        assert_eq!(

+            Rect::new(20, 0, 0, 30),

+            rect.clip_left(40),

+            "x should be clamped to original width if new width is bigger"

+        );

+    }

+

+    #[test]

+    fn test_rect_chop_from_right() {

+        let rect = Rect::new(0, 0, 20, 30);

+        assert_eq!(Rect::new(0, 0, 10, 30), rect.clip_right(10));

+    }

+

+    #[test]

+    fn test_rect_chop_from_top() {

+        let rect = Rect::new(0, 0, 20, 30);

+        assert_eq!(Rect::new(0, 10, 20, 20), rect.clip_top(10));

+        assert_eq!(

+            Rect::new(0, 30, 20, 0),

+            rect.clip_top(50),

+            "y should be clamped to original height if new height is bigger"

+        );

+    }

+

+    #[test]

+    fn test_rect_chop_from_bottom() {

+        let rect = Rect::new(0, 0, 20, 30);

+        assert_eq!(Rect::new(0, 0, 20, 20), rect.clip_bottom(10));

+    }

+

     fn styles() -> Vec<Style> {

         vec![

             Style::default(),

diff --git a/helix-view/src/view.rs b/helix-view/src/view.rs
index b707c092..01f18c71 100644
--- a/helix-view/src/view.rs
+++ b/helix-view/src/view.rs
@@ -83,12 +83,7 @@ impl View {
     pub fn inner_area(&self) -> Rect {
         // TODO: not ideal
         const OFFSET: u16 = 7; // 1 diagnostic + 5 linenr + 1 gutter
-        Rect::new(
-            self.area.x + OFFSET,
-            self.area.y,
-            self.area.width - OFFSET,
-            self.area.height.saturating_sub(1), // -1 for statusline
-        )
+        self.area.clip_left(OFFSET).clip_bottom(1) // -1 for statusline
     }
 
     pub fn ensure_cursor_in_view(&mut self, doc: &Document, scrolloff: usize) {
diff --git a/runtime/queries/protobuf/highlights.scm b/runtime/queries/protobuf/highlights.scm
index 4597dd5a..cd021be1 100644
--- a/runtime/queries/protobuf/highlights.scm
+++ b/runtime/queries/protobuf/highlights.scm
@@ -14,6 +14,7 @@
   "to"
   "stream"
   "extend"
+  "optional"
 ] @keyword
 
 [
@@ -23,7 +24,6 @@
 
 [
   (mapName)
-  (oneofName)
   (enumName)
   (messageName)
   (extendName)
diff --git a/runtime/themes/monokai.toml b/runtime/themes/monokai.toml
new file mode 100644
index 00000000..2407591a
--- /dev/null
+++ b/runtime/themes/monokai.toml
@@ -0,0 +1,83 @@
+# Author: Shafkath Shuhan <shafkathshuhannyc@gmail.com>
+
+"namespace" = { fg = "type" }
+"module" = { fg = "type" }
+
+"type" = { fg = "type" }
+"type.builtin" = { fg = "#66D9EF" }
+"type.enum.variant" = { fg = "text" } 
+"constructor" = { fg = "text" }
+"property" = { fg = "variable" }
+
+"keyword" = { fg = "keyword" }
+"keyword.directive" = { fg = "keyword" }
+"keyword.control" = { fg = "keyword" }
+"label" = { fg = "keyword" }
+
+"special" = { fg = "keyword" }
+"operator" = { fg = "text" }
+
+"punctuation" = { fg = "text" }
+"punctuation.delimiter" = { fg = "text" }
+
+"variable" = { fg = "variable" }
+"variable.parameter" = { fg = "#fd971f" }
+"variable.builtin" = { fg = "keyword" }
+"constant" = { fg = "variable" }
+"constant.builtin" = { fg = "#ae81ff" }
+
+"function" = { fg = "fn_declaration" }
+"function.builtin" = { fg = "fn_declaration" }
+"function.macro" = { fg = "keyword" }
+"attribute" = { fg = "fn_declaration" }
+
+"comment" = { fg = "#88846F" }
+
+"string" = { fg = "#e6db74" }
+"number" = { fg = "#ae81ff" }
+"escape" = { fg = "#ae81ff" }
+
+"ui.background" = { fg = "text", bg = "background" }
+
+"ui.window" = { bg = "widget" }
+"ui.popup" = { bg = "widget" }
+"ui.help" = { bg = "widget" }
+"ui.menu.selected" = { bg = "widget" }
+
+"ui.cursor" = { fg = "cursor", modifiers = ["reversed"] }
+"ui.cursor.primary" = { fg = "cursor", modifiers = ["reversed"] }
+"ui.cursor.match" = { fg = "#888888", modifiers = ["reversed"] }
+
+"ui.selection" = { bg = "#878b91" }
+"ui.selection.primary" = { bg = "#575b61" }
+
+"ui.linenr" = { fg = "#90908a" }
+"ui.linenr.selected" = { fg = "#c2c2bf" }
+
+"ui.statusline" = { fg = "active_text", bg = "#75715e" }
+"ui.statusline.inactive" = { fg = "active_text", bg = "#75715e" }
+
+"ui.text" = { fg = "text", bg = "background" }
+"ui.text.focus" = { fg = "active_text" }
+
+"warning" = { fg = "#cca700" }
+"error" = { fg = "#f48771" }
+"info" = { fg = "#75beff" }
+"hint" = { fg = "#eeeeeeb3" }
+
+diagnostic = { modifiers = ["underlined"] }
+
+[palette]
+type = "#A6E22E"
+keyword = "#F92672"
+regex = "#CE9178"
+special = "#C586C0"
+variable = "#F8F8F2"
+fn_declaration = "#A6E22E"
+
+background = "#272822"
+text = "#f8f8f2"
+active_text = "#ffffff"
+cursor = "#a6a6a6"
+inactive_cursor = "#878b91"
+widget = "#1e1f1c"
diff --git a/theme.toml b/theme.toml
index b66ac499..3166b2d6 100644
--- a/theme.toml
+++ b/theme.toml
@@ -51,6 +51,7 @@ module = "#ff0000"
 "ui.cursor.insert" = { bg = "white" }
 "ui.cursor.match" = { fg = "#212121", bg = "#6C6999" }
 "ui.cursor" = { modifiers = ["reversed"] }
+"ui.highlight" = { bg = "bossanova" }
 
 "ui.menu.selected" = { fg = "revolver", bg = "white" }