correct max_depth option (#1876)

Cargo.lock

@@ -351,7 +351,7 @@ version = "3.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2a011bbe2c35ce9c1f143b7af6f94f29a167beb4cd1d29e6740ce836f723120e"
 dependencies = [
- "nix 0.26.2",
+ "nix",
  "windows-sys 0.48.0",
 ]
 
@@ -758,6 +758,15 @@ version = "0.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "fed44880c466736ef9a5c5b5facefb5ed0785676d0c02d612db14e54f0d84286"
 
+[[package]]
+name = "home"
+version = "0.5.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5444c27eef6923071f7ebcc33e3444508466a76f7a2b93da00ed6e19f30c1ddb"
+dependencies = [
+ "windows-sys 0.48.0",
+]
+
 [[package]]
 name = "hostname"
 version = "0.3.1"
@@ -1149,15 +1158,6 @@ version = "2.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2dffe52ecf27772e601905b7522cb4ef790d2cc203488bbd0e2fe85fcb74566d"
 
-[[package]]
-name = "memoffset"
-version = "0.6.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5aa361d4faea93603064a027415f07bd8e1d5c88c9fbf68bf56a285428fd79ce"
-dependencies = [
- "autocfg",
-]
-
 [[package]]
 name = "mime"
 version = "0.3.17"
@@ -1258,19 +1258,6 @@ dependencies = [
  "smallvec",
 ]
 
-[[package]]
-name = "nix"
-version = "0.23.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8f3790c00a0150112de0f4cd161e3d7fc4b2d8a5542ffc35f099a2562aecb35c"
-dependencies = [
- "bitflags 1.3.2",
- "cc",
- "cfg-if",
- "libc",
- "memoffset",
-]
-
 [[package]]
 name = "nix"
 version = "0.26.2"
@@ -1813,22 +1800,21 @@ checksum = "4f3208ce4d8448b3f3e7d168a73f5e0c43a61e32930de3bceeccedb388b6bf06"
 
 [[package]]
 name = "rustyline"
-version = "9.1.2"
+version = "12.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "db7826789c0e25614b03e5a54a0717a86f9ff6e6e5247f92b369472869320039"
+checksum = "994eca4bca05c87e86e15d90fc7a91d1be64b4482b38cb2d27474568fe7c9db9"
 dependencies = [
- "bitflags 1.3.2",
+ "bitflags 2.3.3",
  "cfg-if",
  "clipboard-win",
- "dirs-next",
  "fd-lock",
+ "home",
  "libc",
  "log",
  "memchr",
- "nix 0.23.2",
+ "nix",
  "radix_trie",
  "scopeguard",
- "smallvec",
  "unicode-segmentation",
  "unicode-width",
  "utf8parse",

Cargo.toml

@@ -46,7 +46,7 @@ ordered-float = "2.6.0"
 phf = { version = "0.9", features = ["macros"] }
 ref_thread_local = "0.0.0"
 rug = { version = "1.15.0", optional = true }
-rustyline = "9.0.0"
+rustyline = "12.0.0"
 ring = "0.16.13"
 ripemd160 = "0.8.0"
 sha3 = "0.8.2"

src/heap_print.rs

@@ -1465,9 +1465,7 @@ impl<'a, Outputter: HCValueOutputter> HCPrinter<'a, Outputter> {
 
         let print_struct = |printer: &mut Self, name: Atom, arity: usize| {
             if name == atom!("[]") && arity == 0 {
-                if !printer.at_cdr("") {
-                    append_str!(printer, "[]");
-                }
+                append_str!(printer, "[]");
             } else if arity > 0 {
                 if let Some(spec) = fetch_op_spec(name, arity, printer.op_dir) {
                     printer.handle_op_as_struct(

src/read.rs

@@ -17,6 +17,7 @@ use fxhash::FxBuildHasher;
 
 use indexmap::IndexSet;
 use rustyline::error::ReadlineError;
+use rustyline::history::DefaultHistory;
 use rustyline::{Config, Editor};
 
 use std::collections::VecDeque;
@@ -109,7 +110,7 @@ fn get_prompt() -> &'static str {
 
 #[derive(Debug)]
 pub struct ReadlineStream {
-    rl: Editor<Helper>,
+    rl: Editor<Helper, DefaultHistory>,
     pending_input: CharReader<Cursor<String>>,
     add_history: bool,
 }
@@ -117,10 +118,13 @@ pub struct ReadlineStream {
 impl ReadlineStream {
     #[inline]
     pub fn new(pending_input: &str, add_history: bool) -> Self {
-        let config = Config::builder().check_cursor_position(true).build();
+        let config = Config::builder()
+            .check_cursor_position(true)
+            .build();
+
         let helper = Helper::new();
 
-        let mut rl = Editor::with_config(config);
+        let mut rl = Editor::with_config(config).unwrap();
         rl.set_helper(Some(helper));
 
         if let Some(mut path) = dirs_next::home_dir() {
@@ -130,8 +134,6 @@ impl ReadlineStream {
             }
         }
 
-        // rl.bind_sequence(KeyEvent::from('\t'), Cmd::Insert(1, "\t".to_string()));
-
         ReadlineStream {
             rl,
             pending_input: CharReader::new(Cursor::new(pending_input.to_owned())),
@@ -164,7 +166,7 @@ impl ReadlineStream {
 
                 unsafe {
                     if PROMPT {
-                        self.rl.history_mut().add(self.pending_input.get_ref().get_ref());
+                        self.rl.add_history_entry(self.pending_input.get_ref().get_ref()).unwrap();
                         self.save_history();
                         PROMPT = false;
                     }