Workaround color prompt by making our own helper

Cargo.lock

@@ -415,7 +415,7 @@ dependencies = [
  "itertools 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "nom 5.0.0-beta1 (registry+https://github.com/rust-lang/crates.io-index)",
  "prettytable-rs 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "rustyline 4.0.0 (git+https://github.com/jonathandturner/rustyline.git)",
+ "rustyline 4.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "subprocess 0.1.18 (registry+https://github.com/rust-lang/crates.io-index)",
  "sysinfo 0.8.3 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -564,7 +564,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 [[package]]
 name = "rustyline"
 version = "4.0.0"
-source = "git+https://github.com/jonathandturner/rustyline.git#15cc18b1dd550873c9a44d90e8992f18c46b3744"
+source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "dirs 1.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.54 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -827,7 +827,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum regex 1.1.6 (registry+https://github.com/rust-lang/crates.io-index)" = "8f0a0bcab2fd7d1d7c54fa9eae6f43eddeb9ce2e7352f8518a814a4f65d60c58"
 "checksum regex-syntax 0.6.6 (registry+https://github.com/rust-lang/crates.io-index)" = "dcfd8681eebe297b81d98498869d4aae052137651ad7b96822f09ceb690d0a96"
 "checksum rustc-demangle 0.1.14 (registry+https://github.com/rust-lang/crates.io-index)" = "ccc78bfd5acd7bf3e89cffcf899e5cb1a52d6fafa8dec2739ad70c9577a57288"
-"checksum rustyline 4.0.0 (git+https://github.com/jonathandturner/rustyline.git)" = "<none>"
+"checksum rustyline 4.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "cf0a3bbb3167469f834da68a6636b93d4f6838f5438dd53ac02668abee8b997a"
 "checksum ryu 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)" = "b96a9549dc8d48f2c283938303c4b5a77aa29bfbc5b54b084fb1630408899a8f"
 "checksum scoped_threadpool 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)" = "1d51f5df5af43ab3f1360b429fa5e0152ac5ce8c0bd6485cae490332e96846a8"
 "checksum scopeguard 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)" = "94258f53601af11e6a49f722422f6e3425c52b06245a5cf9bc09908b174f5e27"

Cargo.toml

@@ -7,7 +7,7 @@ edition = "2018"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-rustyline = { version = "4.0.0", git = "https://github.com/jonathandturner/rustyline.git" }
+rustyline = "4.0.0" 
 sysinfo = "0.8.3"
 chrono = "0.4.6"
 chrono-tz = "0.5.1"

src/main.rs

@@ -3,6 +3,7 @@
 
 #[allow(unused)]
 use crate::prelude::*;
+use std::borrow::Cow::{self, Borrowed, Owned};
 
 mod commands;
 mod context;
@@ -20,10 +21,13 @@ crate use crate::env::{Environment, Host};
 crate use crate::errors::ShellError;
 crate use crate::format::{EntriesListView, GenericView};
 use crate::object::Value;
+use rustyline::completion::{Completer, FilenameCompleter, Pair};
+use rustyline::highlight::{Highlighter, MatchingBracketHighlighter};
+use rustyline::hint::{Hinter, HistoryHinter};
 
 use ansi_term::Color;
 use rustyline::error::ReadlineError;
-use rustyline::Editor;
+use rustyline::{ColorMode, Config, Editor, Helper, self};
 use std::collections::VecDeque;
 use std::error::Error;
 use std::sync::{Arc, Mutex};
@@ -44,8 +48,55 @@ impl<T> MaybeOwned<'a, T> {
     }
 }
 
+struct MyHelper(FilenameCompleter, MatchingBracketHighlighter, HistoryHinter);
+impl Completer for MyHelper {
+    type Candidate = Pair;
+
+    fn complete(
+        &self,
+        line: &str,
+        pos: usize,
+        ctx: &rustyline::Context<'_>,
+    ) -> Result<(usize, Vec<Pair>), ReadlineError> {
+        self.0.complete(line, pos, ctx)
+    }
+}
+
+impl Hinter for MyHelper {
+    fn hint(&self, line: &str, pos: usize, ctx: &rustyline::Context<'_>) -> Option<String> {
+        self.2.hint(line, pos, ctx)
+    }
+}
+
+impl Highlighter for MyHelper {
+    fn highlight_prompt<'p>(&self, prompt: &'p str) -> Cow<'p, str> {
+        Owned("\x1b[32m".to_owned() + &prompt[0..prompt.len() - 2] + "\x1b[m> ")
+    }
+
+    fn highlight_hint<'h>(&self, hint: &'h str) -> Cow<'h, str> {
+        Owned("\x1b[1m".to_owned() + hint + "\x1b[m")
+    }
+
+    fn highlight<'l>(&self, line: &'l str, pos: usize) -> Cow<'l, str> {
+        self.1.highlight(line, pos)
+    }
+
+    fn highlight_char(&self, line: &str, pos: usize) -> bool {
+        self.1.highlight_char(line, pos)
+    }
+}
+
+impl Helper for MyHelper {}
+
 fn main() -> Result<(), Box<Error>> {
-    let mut rl = Editor::<()>::new();
+    let config = Config::builder().color_mode(ColorMode::Forced).build();
+    let h = MyHelper(
+        FilenameCompleter::new(),
+        MatchingBracketHighlighter::new(),
+        HistoryHinter {},
+    );
+    let mut rl: Editor<MyHelper> = Editor::with_config(config);
+    rl.set_helper(Some(h));
     if rl.load_history("history.txt").is_err() {
         println!("No previous history.");
     }
@@ -64,14 +115,14 @@ fn main() -> Result<(), Box<Error>> {
             ("select", Box::new(select::Select)),
             ("reject", Box::new(reject::Reject)),
             ("to-array", Box::new(to_array::ToArray)),
-            ("where", Box::new(where_::Where))
+            ("where", Box::new(where_::Where)),
         ]);
     }
 
     loop {
         let readline = rl.readline(&format!(
             "{}> ",
-            Color::Green.paint(context.lock().unwrap().env.cwd().display().to_string())
+            context.lock().unwrap().env.cwd().display().to_string()
         ));
 
         match readline {