Remove #[allow(unused)] from helix-term, and fix unused imports.

Lots of other warning still left.  Will address in subsequent commits.

15 files changed, 57 insertions, 123 deletions

diff --git a/helix-term/src/application.rs b/helix-term/src/application.rs
index 3d20e1b3..1939e88c 100644
--- a/helix-term/src/application.rs
+++ b/helix-term/src/application.rs
@@ -1,37 +1,23 @@
 use helix_core::syntax;
-use helix_lsp::{lsp, LspProgressMap};
-use helix_view::{document::Mode, graphics::Rect, theme, Document, Editor, Theme, View};
-
-use crate::{
-    args::Args,
-    compositor::Compositor,
-    config::Config,
-    job::Jobs,
-    keymap::Keymaps,
-    ui::{self, Spinner},
-};
+use helix_lsp::{lsp, util::lsp_pos_to_pos, LspProgressMap};
+use helix_view::{theme, Editor};
+
+use crate::{args::Args, compositor::Compositor, config::Config, job::Jobs, ui};
 
-use log::{error, info};
+use log::error;
 
 use std::{
-    collections::HashMap,
-    future::Future,
-    io::{self, stdout, Stdout, Write},
-    path::PathBuf,
-    pin::Pin,
+    io::{stdout, Write},
     sync::Arc,
-    time::Duration,
 };
 
-use anyhow::{Context, Error};
+use anyhow::Error;
 
 use crossterm::{
     event::{Event, EventStream},
     execute, terminal,
 };
 
-use futures_util::{future, stream::FuturesUnordered};
-
 pub struct Application {
     compositor: Compositor,
     editor: Editor,
@@ -239,10 +225,9 @@ impl Application {
                                 .into_iter()
                                 .filter_map(|diagnostic| {
                                     use helix_core::{
-                                        diagnostic::{Range, Severity, Severity::*},
+                                        diagnostic::{Range, Severity::*},
                                         Diagnostic,
                                     };
-                                    use helix_lsp::{lsp, util::lsp_pos_to_pos};
                                     use lsp::DiagnosticSeverity;
 
                                     let language_server = doc.language_server().unwrap();
diff --git a/helix-term/src/commands.rs b/helix-term/src/commands.rs
index fa251ff0..e3accaeb 100644
--- a/helix-term/src/commands.rs
+++ b/helix-term/src/commands.rs
@@ -1,20 +1,21 @@
 use helix_core::{
     comment, coords_at_pos, find_first_non_whitespace_char, find_root, graphemes, indent,
     line_ending::{
-        get_line_ending, get_line_ending_of_str, line_end_char_index, rope_end_without_line_ending,
+        get_line_ending_of_str, line_end_char_index, rope_end_without_line_ending,
         str_is_line_ending,
     },
     match_brackets,
     movement::{self, Direction},
     object, pos_at_coords,
     regex::{self, Regex},
-    register::{self, Register, Registers},
-    search, selection, Change, ChangeSet, LineEnding, Position, Range, Rope, RopeGraphemes,
-    RopeSlice, Selection, SmallVec, Tendril, Transaction, DEFAULT_LINE_ENDING,
+    register::Register,
+    search, selection, LineEnding, Position, Range, Rope, RopeGraphemes, RopeSlice, Selection,
+    SmallVec, Tendril, Transaction,
 };
 
 use helix_view::{
     document::{IndentStyle, Mode},
+    editor::Action,
     input::KeyEvent,
     keyboard::KeyCode,
     view::{View, PADDING},
@@ -25,19 +26,19 @@ use anyhow::anyhow;
 use helix_lsp::{
     lsp,
     util::{lsp_pos_to_pos, lsp_range_to_range, pos_to_lsp_pos, range_to_lsp_range},
-    LspProgressMap, OffsetEncoding,
+    OffsetEncoding,
 };
 use insert::*;
 use movement::Movement;
 
 use crate::{
-    compositor::{self, Callback, Component, Compositor},
-    ui::{self, Completion, Picker, Popup, Prompt, PromptEvent},
+    compositor::{self, Component, Compositor},
+    ui::{self, Picker, Popup, Prompt, PromptEvent},
 };
 
-use crate::job::{self, Job, JobFuture, Jobs};
+use crate::job::{self, Job, Jobs};
 use futures_util::{FutureExt, TryFutureExt};
-use std::{fmt, future::Future, path::Display, str::FromStr};
+use std::{fmt, future::Future};
 
 use std::{
     borrow::Cow,
@@ -1148,7 +1149,6 @@ mod cmd {
         cx: &mut compositor::Context,
         path: Option<P>,
     ) -> Result<tokio::task::JoinHandle<Result<(), anyhow::Error>>, anyhow::Error> {
-        use anyhow::anyhow;
         let jobs = &mut cx.jobs;
         let (view, doc) = current!(cx.editor);
 
@@ -1723,7 +1723,6 @@ fn command_mode(cx: &mut Context) {
             // simple heuristic: if there's no just one part, complete command name.
             // if there's a space, per command completion kicks in.
             if parts.len() <= 1 {
-                use std::{borrow::Cow, ops::Range};
                 let end = 0..;
                 cmd::TYPABLE_COMMAND_LIST
                     .iter()
@@ -1753,8 +1752,6 @@ fn command_mode(cx: &mut Context) {
             }
         }, // completion
         move |cx: &mut compositor::Context, input: &str, event: PromptEvent| {
-            use helix_view::editor::Action;
-
             if event != PromptEvent::Validate {
                 return;
             }
@@ -1792,7 +1789,6 @@ fn file_picker(cx: &mut Context) {
 }
 
 fn buffer_picker(cx: &mut Context) {
-    use std::path::{Path, PathBuf};
     let current = view!(cx.editor).doc;
 
     let picker = Picker::new(
@@ -1815,7 +1811,6 @@ fn buffer_picker(cx: &mut Context) {
             }
         },
         |editor: &mut Editor, (id, _path): &(DocumentId, Option<PathBuf>), _action| {
-            use helix_view::editor::Action;
             editor.switch(*id, Action::Replace);
         },
     );
@@ -2145,8 +2140,6 @@ fn goto_impl(
     locations: Vec<lsp::Location>,
     offset_encoding: OffsetEncoding,
 ) {
-    use helix_view::editor::Action;
-
     push_jump(editor);
 
     fn jump_to(
@@ -3181,7 +3174,6 @@ fn completion(cx: &mut Context) {
             if items.is_empty() {
                 return;
             }
-            use crate::compositor::AnyComponent;
             let size = compositor.size();
             let ui = compositor
                 .find(std::any::type_name::<ui::EditorView>())
@@ -3332,11 +3324,7 @@ fn rotate_view(cx: &mut Context) {
 }
 
 // split helper, clear it later
-use helix_view::editor::Action;
-
-use self::cmd::TypableCommand;
 fn split(cx: &mut Context, action: Action) {
-    use helix_view::editor::Action;
     let (view, doc) = current!(cx.editor);
     let id = doc.id();
     let selection = doc.selection(view.id).clone();
diff --git a/helix-term/src/compositor.rs b/helix-term/src/compositor.rs
index ba8c4bc7..46da04be 100644
--- a/helix-term/src/compositor.rs
+++ b/helix-term/src/compositor.rs
@@ -2,7 +2,6 @@
 // Q: how does this work with popups?
 // cursive does compositor.screen_mut().add_layer_at(pos::absolute(x, y), <component>)
 use helix_core::Position;
-use helix_lsp::LspProgressMap;
 use helix_view::graphics::{CursorKind, Rect};
 
 use crossterm::event::Event;
diff --git a/helix-term/src/config.rs b/helix-term/src/config.rs
index 3c05144a..b5ccbdfb 100644
--- a/helix-term/src/config.rs
+++ b/helix-term/src/config.rs
@@ -1,10 +1,10 @@
-use anyhow::{Error, Result};
 use serde::Deserialize;
-use std::collections::HashMap;
 
-use crate::commands::Command;
 use crate::keymap::Keymaps;
 
+#[cfg(test)]
+use crate::commands::Command;
+
 #[derive(Debug, Default, Clone, PartialEq, Deserialize)]
 pub struct Config {
     pub theme: Option<String>,
diff --git a/helix-term/src/job.rs b/helix-term/src/job.rs
index 4b59c81c..c2873513 100644
--- a/helix-term/src/job.rs
+++ b/helix-term/src/job.rs
@@ -3,7 +3,7 @@ use helix_view::Editor;
 use crate::compositor::Compositor;
 
 use futures_util::future::{self, BoxFuture, Future, FutureExt};
-use futures_util::stream::{self, FuturesUnordered, Select, StreamExt};
+use futures_util::stream::{FuturesUnordered, StreamExt};
 
 pub type Callback = Box<dyn FnOnce(&mut Editor, &mut Compositor) + Send>;
 pub type JobFuture = BoxFuture<'static, anyhow::Result<Option<Callback>>>;
diff --git a/helix-term/src/keymap.rs b/helix-term/src/keymap.rs
index 22731d16..53588a2b 100644
--- a/helix-term/src/keymap.rs
+++ b/helix-term/src/keymap.rs
@@ -1,7 +1,5 @@
-use crate::commands;
 pub use crate::commands::Command;
 use crate::config::Config;
-use anyhow::{anyhow, Error, Result};
 use helix_core::hashmap;
 use helix_view::{
     document::Mode,
@@ -11,9 +9,7 @@ use helix_view::{
 use serde::Deserialize;
 use std::{
     collections::HashMap,
-    fmt::Display,
     ops::{Deref, DerefMut},
-    str::FromStr,
 };
 
 // Kakoune-inspired:
diff --git a/helix-term/src/lib.rs b/helix-term/src/lib.rs
index 3f288188..f5e3a8cd 100644
--- a/helix-term/src/lib.rs
+++ b/helix-term/src/lib.rs
@@ -1,5 +1,3 @@
-#![allow(unused)]
-
 #[macro_use]
 extern crate helix_view;
 
diff --git a/helix-term/src/ui/completion.rs b/helix-term/src/ui/completion.rs
index 74a82dab..5b418f75 100644
--- a/helix-term/src/ui/completion.rs
+++ b/helix-term/src/ui/completion.rs
@@ -1,19 +1,16 @@
-use crate::compositor::{Component, Compositor, Context, EventResult};
-use crossterm::event::{Event, KeyCode, KeyEvent, KeyModifiers};
+use crate::compositor::{Component, Context, EventResult};
+use crossterm::event::{Event, KeyCode, KeyEvent};
 use tui::buffer::Buffer as Surface;
 
 use std::borrow::Cow;
 
-use helix_core::{Position, Transaction};
-use helix_view::{
-    graphics::{Color, Rect, Style},
-    Editor,
-};
+use helix_core::Transaction;
+use helix_view::{graphics::Rect, Editor};
 
 use crate::commands;
 use crate::ui::{menu, Markdown, Menu, Popup, PromptEvent};
 
-use helix_lsp::lsp;
+use helix_lsp::{lsp, util};
 use lsp::CompletionItem;
 
 impl menu::Item for CompletionItem {
@@ -88,8 +85,6 @@ impl Completion {
                     // always present here
                     let item = item.unwrap();
 
-                    use helix_lsp::{lsp, util};
-
                     // if more text was entered, remove it
                     let cursor = doc.selection(view.id).cursor();
                     if trigger_offset < cursor {
@@ -100,7 +95,6 @@ impl Completion {
                         doc.apply(&remove, view.id);
                     }
 
-                    use helix_lsp::OffsetEncoding;
                     let transaction = if let Some(edit) = &item.text_edit {
                         let edit = match edit {
                             lsp::CompletionTextEdit::Edit(edit) => edit.clone(),
diff --git a/helix-term/src/ui/editor.rs b/helix-term/src/ui/editor.rs
index b55a830e..70f81af9 100644
--- a/helix-term/src/ui/editor.rs
+++ b/helix-term/src/ui/editor.rs
@@ -1,32 +1,28 @@
 use crate::{
     commands,
-    compositor::{Component, Compositor, Context, EventResult},
+    compositor::{Component, Context, EventResult},
     key,
-    keymap::{self, Keymaps},
+    keymap::Keymaps,
     ui::{Completion, ProgressSpinners},
 };
 
 use helix_core::{
     coords_at_pos,
     graphemes::ensure_grapheme_boundary,
-    syntax::{self, Highlight, HighlightEvent},
+    syntax::{self, HighlightEvent},
     LineEnding, Position, Range,
 };
-use helix_lsp::LspProgressMap;
 use helix_view::{
     document::Mode,
-    graphics::{Color, CursorKind, Modifier, Rect, Style},
+    graphics::{CursorKind, Modifier, Rect, Style},
     input::KeyEvent,
     keyboard::{KeyCode, KeyModifiers},
     Document, Editor, Theme, View,
 };
 use std::borrow::Cow;
 
-use crossterm::{
-    cursor,
-    event::{read, Event, EventStream},
-};
-use tui::{backend::CrosstermBackend, buffer::Buffer as Surface};
+use crossterm::event::Event;
+use tui::buffer::Buffer as Surface;
 
 pub struct EditorView {
     keymaps: Keymaps,
diff --git a/helix-term/src/ui/markdown.rs b/helix-term/src/ui/markdown.rs
index 36d570cd..a1f1e5ea 100644
--- a/helix-term/src/ui/markdown.rs
+++ b/helix-term/src/ui/markdown.rs
@@ -1,13 +1,20 @@
-use crate::compositor::{Component, Compositor, Context, EventResult};
-use crossterm::event::{Event, KeyCode, KeyEvent, KeyModifiers};
-use tui::{buffer::Buffer as Surface, text::Text};
+use crate::compositor::{Component, Context};
+use tui::{
+    buffer::Buffer as Surface,
+    text::{Span, Spans, Text},
+};
+
+use std::sync::Arc;
 
-use std::{borrow::Cow, sync::Arc};
+use pulldown_cmark::{CodeBlockKind, CowStr, Event, Options, Parser, Tag};
 
-use helix_core::{syntax, Position};
+use helix_core::{
+    syntax::{self, HighlightEvent, Syntax},
+    Rope,
+};
 use helix_view::{
     graphics::{Color, Rect, Style},
-    Editor, Theme,
+    Theme,
 };
 
 pub struct Markdown {
@@ -33,9 +40,6 @@ fn parse<'a>(
     theme: Option<&Theme>,
     loader: &syntax::Loader,
 ) -> tui::text::Text<'a> {
-    use pulldown_cmark::{CodeBlockKind, CowStr, Event, Options, Parser, Tag};
-    use tui::text::{Span, Spans, Text};
-
     // also 2021-03-04T16:33:58.553 helix_lsp::transport [INFO] <- {"contents":{"kind":"markdown","value":"\n```rust\ncore::num\n```\n\n```rust\npub const fn saturating_sub(self, rhs:Self) ->Self\n```\n\n---\n\n```rust\n```"},"range":{"end":{"character":61,"line":101},"start":{"character":47,"line":101}}}
     let text = "\n```rust\ncore::iter::traits::iterator::Iterator\n```\n\n```rust\nfn collect<B: FromIterator<Self::Item>>(self) -> B\nwhere\n        Self: Sized,\n```\n\n---\n\nTransforms an iterator into a collection.\n\n`collect()` can take anything iterable, and turn it into a relevant\ncollection. This is one of the more powerful methods in the standard\nlibrary, used in a variety of contexts.\n\nThe most basic pattern in which `collect()` is used is to turn one\ncollection into another. You take a collection, call [`iter`](https://doc.rust-lang.org/nightly/core/iter/traits/iterator/trait.Iterator.html) on it,\ndo a bunch of transformations, and then `collect()` at the end.\n\n`collect()` can also create instances of types that are not typical\ncollections. For example, a [`String`](https://doc.rust-lang.org/nightly/core/iter/std/string/struct.String.html) can be built from [`char`](type@char)s,\nand an iterator of [`Result<T, E>`](https://doc.rust-lang.org/nightly/core/result/enum.Result.html) items can be collected\ninto `Result<Collection<T>, E>`. See the examples below for more.\n\nBecause `collect()` is so general, it can cause problems with type\ninference. As such, `collect()` is one of the few times you'll see\nthe syntax affectionately known as the 'turbofish': `::<>`. This\nhelps the inference algorithm understand specifically which collection\nyou're trying to collect into.\n\n# Examples\n\nBasic usage:\n\n```rust\nlet a = [1, 2, 3];\n\nlet doubled: Vec<i32> = a.iter()\n                         .map(|&x| x * 2)\n                         .collect();\n\nassert_eq!(vec![2, 4, 6], doubled);\n```\n\nNote that we needed the `: Vec<i32>` on the left-hand side. This is because\nwe could collect into, for example, a [`VecDeque<T>`](https://doc.rust-lang.org/nightly/core/iter/std/collections/struct.VecDeque.html) instead:\n\n```rust\nuse std::collections::VecDeque;\n\nlet a = [1, 2, 3];\n\nlet doubled: VecDeque<i32> = a.iter().map(|&x| x * 2).collect();\n\nassert_eq!(2, doubled[0]);\nassert_eq!(4, doubled[1]);\nassert_eq!(6, doubled[2]);\n```\n\nUsing the 'turbofish' instead of annotating `doubled`:\n\n```rust\nlet a = [1, 2, 3];\n\nlet doubled = a.iter().map(|x| x * 2).collect::<Vec<i32>>();\n\nassert_eq!(vec![2, 4, 6], doubled);\n```\n\nBecause `collect()` only cares about what you're collecting into, you can\nstill use a partial type hint, `_`, with the turbofish:\n\n```rust\nlet a = [1, 2, 3];\n\nlet doubled = a.iter().map(|x| x * 2).collect::<Vec<_>>();\n\nassert_eq!(vec![2, 4, 6], doubled);\n```\n\nUsing `collect()` to make a [`String`](https://doc.rust-lang.org/nightly/core/iter/std/string/struct.String.html):\n\n```rust\nlet chars = ['g', 'd', 'k', 'k', 'n'];\n\nlet hello: String = chars.iter()\n    .map(|&x| x as u8)\n    .map(|x| (x + 1) as char)\n    .collect();\n\nassert_eq!(\"hello\", hello);\n```\n\nIf you have a list of [`Result<T, E>`](https://doc.rust-lang.org/nightly/core/result/enum.Result.html)s, you can use `collect()` to\nsee if any of them failed:\n\n```rust\nlet results = [Ok(1), Err(\"nope\"), Ok(3), Err(\"bad\")];\n\nlet result: Result<Vec<_>, &str> = results.iter().cloned().collect();\n\n// gives us the first error\nassert_eq!(Err(\"nope\"), result);\n\nlet results = [Ok(1), Ok(3)];\n\nlet result: Result<Vec<_>, &str> = results.iter().cloned().collect();\n\n// gives us the list of answers\nassert_eq!(Ok(vec![1, 3]), result);\n```";
 
@@ -82,9 +86,6 @@ fn parse<'a>(
                 // TODO: temp workaround
                 if let Some(Tag::CodeBlock(CodeBlockKind::Fenced(language))) = tags.last() {
                     if let Some(theme) = theme {
-                        use helix_core::syntax::{self, HighlightEvent, Syntax};
-                        use helix_core::Rope;
-
                         let rope = Rope::from(text.as_ref());
                         let syntax = loader
                             .language_config_for_scope(&format!("source.{}", language))
diff --git a/helix-term/src/ui/menu.rs b/helix-term/src/ui/menu.rs
index bf18b92b..cb8b6723 100644
--- a/helix-term/src/ui/menu.rs
+++ b/helix-term/src/ui/menu.rs
@@ -4,16 +4,10 @@ use tui::{buffer::Buffer as Surface, widgets::Table};
 
 pub use tui::widgets::{Cell, Row};
 
-use std::borrow::Cow;
-
 use fuzzy_matcher::skim::SkimMatcherV2 as Matcher;
 use fuzzy_matcher::FuzzyMatcher;
 
-use helix_core::Position;
-use helix_view::{
-    graphics::{Color, Rect, Style},
-    Editor,
-};
+use helix_view::{graphics::Rect, Editor};
 
 pub trait Item {
     // TODO: sort_text
diff --git a/helix-term/src/ui/mod.rs b/helix-term/src/ui/mod.rs
index 2d4cf9cf..86ec7615 100644
--- a/helix-term/src/ui/mod.rs
+++ b/helix-term/src/ui/mod.rs
@@ -20,12 +20,9 @@ pub use text::Text;
 
 use helix_core::regex::Regex;
 use helix_core::register::Registers;
-use helix_view::{
-    graphics::{Color, Modifier, Rect, Style},
-    Document, Editor, View,
-};
+use helix_view::{Document, Editor, View};
 
-use std::path::{Path, PathBuf};
+use std::path::PathBuf;
 
 pub fn regex_prompt(
     cx: &mut crate::commands::Context,
@@ -133,8 +130,8 @@ pub mod completers {
     use fuzzy_matcher::skim::SkimMatcherV2 as Matcher;
     use fuzzy_matcher::FuzzyMatcher;
     use helix_view::theme;
+    use std::borrow::Cow;
     use std::cmp::Reverse;
-    use std::{borrow::Cow, sync::Arc};
 
     pub type Completer = fn(&str) -> Vec<Completion>;
 
@@ -208,7 +205,7 @@ pub mod completers {
         // Rust's filename handling is really annoying.
 
         use ignore::WalkBuilder;
-        use std::path::{Path, PathBuf};
+        use std::path::Path;
 
         let is_tilde = input.starts_with('~') && input.len() == 1;
         let path = helix_view::document::expand_tilde(Path::new(input));
diff --git a/helix-term/src/ui/popup.rs b/helix-term/src/ui/popup.rs
index af72735c..fc178af0 100644
--- a/helix-term/src/ui/popup.rs
+++ b/helix-term/src/ui/popup.rs
@@ -2,13 +2,8 @@ use crate::compositor::{Component, Compositor, Context, EventResult};
 use crossterm::event::{Event, KeyCode, KeyEvent, KeyModifiers};
 use tui::buffer::Buffer as Surface;
 
-use std::borrow::Cow;
-
 use helix_core::Position;
-use helix_view::{
-    graphics::{Color, Rect, Style},
-    Editor,
-};
+use helix_view::graphics::Rect;
 
 // TODO: share logic with Menu, it's essentially Popup(render_fn), but render fn needs to return
 // a width/height hint. maybe Popup(Box<Component>)
diff --git a/helix-term/src/ui/prompt.rs b/helix-term/src/ui/prompt.rs
index 6bb1b006..f7c3c685 100644
--- a/helix-term/src/ui/prompt.rs
+++ b/helix-term/src/ui/prompt.rs
@@ -5,13 +5,11 @@ use std::{borrow::Cow, ops::RangeFrom};
 use tui::buffer::Buffer as Surface;
 
 use helix_core::{
-    unicode::segmentation::{GraphemeCursor, GraphemeIncomplete},
-    unicode::width::UnicodeWidthStr,
-    Position,
+    unicode::segmentation::GraphemeCursor, unicode::width::UnicodeWidthStr, Position,
 };
 use helix_view::{
-    graphics::{Color, CursorKind, Margin, Modifier, Rect, Style},
-    Editor, Theme,
+    graphics::{CursorKind, Margin, Rect},
+    Editor,
 };
 
 pub type Completion = (RangeFrom<usize>, Cow<'static, str>);
diff --git a/helix-term/src/ui/text.rs b/helix-term/src/ui/text.rs
index 7c491841..0d7cd0ed 100644
--- a/helix-term/src/ui/text.rs
+++ b/helix-term/src/ui/text.rs
@@ -1,14 +1,7 @@
-use crate::compositor::{Component, Compositor, Context, EventResult};
-use crossterm::event::{Event, KeyCode, KeyEvent, KeyModifiers};
+use crate::compositor::{Component, Context};
 use tui::buffer::Buffer as Surface;
 
-use std::borrow::Cow;
-
-use helix_core::Position;
-use helix_view::{
-    graphics::{Color, Rect, Style},
-    Editor,
-};
+use helix_view::graphics::Rect;
 
 pub struct Text {
     contents: String,