Remove pre-2018 extern crate syntax

benches/view/draw_buffer.rs

@@ -1,4 +1,3 @@
-extern crate amp;
 #[macro_use]
 extern crate criterion;
 

src/input/key_map/mod.rs

@@ -5,7 +5,7 @@ use smallvec::SmallVec;
 use std::collections::HashMap;
 use std::ops::{Deref, DerefMut};
 use std::convert::Into;
-use crate::yaml::yaml::{Hash, Yaml, YamlLoader};
+use yaml_rust::yaml::{Hash, Yaml, YamlLoader};
 
 /// Nested HashMap newtype that provides a more ergonomic interface.
 pub struct KeyMap(HashMap<String, HashMap<Key, SmallVec<[Command; 4]>>>);
@@ -241,7 +241,7 @@ impl Into<HashMap<String, HashMap<Key, SmallVec<[Command; 4]>>>> for KeyMap {
 
 #[cfg(test)]
 mod tests {
-    use crate::yaml::YamlLoader;
+    use yaml_rust::YamlLoader;
     use super::KeyMap;
     use crate::commands;
     use crate::input::Key;

src/lib.rs

@@ -1,22 +1,6 @@
 // `error_chain!` can recurse deeply
 #![recursion_limit = "1024"]
 
-// External dependencies
-extern crate app_dirs2;
-extern crate bloodhound;
-extern crate fragment;
-extern crate git2;
-extern crate luthor;
-extern crate mio;
-extern crate regex;
-extern crate scribe;
-extern crate signal_hook;
-extern crate syntect;
-extern crate unicode_segmentation;
-extern crate cli_clipboard as clipboard;
-extern crate yaml_rust as yaml;
-extern crate smallvec;
-
 #[macro_use]
 extern crate error_chain;
 

src/main.rs

@@ -1,4 +1,3 @@
-extern crate amp;
 use amp::Application;
 use amp::Error;
 use std::env;

src/models/application/clipboard.rs

@@ -1,5 +1,5 @@
 use crate::errors::*;
-use clipboard::{ClipboardContext, ClipboardProvider};
+use cli_clipboard::{ClipboardContext, ClipboardProvider};
 
 /// In-app content can be captured in both regular and full-line selection
 /// modes. This type describes the structure of said content, based on the

src/models/application/mod.rs

@@ -312,7 +312,7 @@ mod tests {
     use crate::view::View;
     use super::preferences::Preferences;
 
-    use yaml::YamlLoader;
+    use yaml_rust::YamlLoader;
     use scribe::Buffer;
     use std::cell::RefCell;
     use std::env;

src/models/application/modes/open/exclusions.rs

@@ -1,6 +1,6 @@
 use crate::errors::*;
 use bloodhound::ExclusionPattern;
-use crate::yaml::Yaml;
+use yaml_rust::Yaml;
 
 pub fn parse(exclusion_data: &[Yaml]) -> Result<Vec<ExclusionPattern>> {
     let mut mapped_exclusions = Vec::new();

src/models/application/preferences/mod.rs

@@ -7,7 +7,7 @@ use scribe::Buffer;
 use std::fs::OpenOptions;
 use std::io::Read;
 use std::path::{Path, PathBuf};
-use crate::yaml::yaml::{Hash, Yaml, YamlLoader};
+use yaml_rust::yaml::{Hash, Yaml, YamlLoader};
 use crate::models::application::modes::SearchSelectConfig;
 
 const APP_INFO: AppInfo = AppInfo {
@@ -359,7 +359,7 @@ mod tests {
     use super::{ExclusionPattern, Preferences, YamlLoader};
     use std::path::{Path, PathBuf};
     use crate::input::KeyMap;
-    use crate::yaml::yaml::{Hash, Yaml};
+    use yaml_rust::yaml::{Hash, Yaml};
 
     #[test]
     fn preferences_returns_user_defined_theme_name() {

src/view/buffer/renderer.rs

@@ -399,7 +399,7 @@ mod tests {
     use super::{BufferRenderer, LexemeMapper, MappedLexeme};
     use syntect::highlighting::ThemeSet;
     use crate::view::terminal::*;
-    use crate::yaml::yaml::YamlLoader;
+    use yaml_rust::yaml::YamlLoader;
 
     #[test]
     fn tabs_beyond_terminal_width_dont_panic() {