diff --git a/Cargo.lock b/Cargo.lock
index 53ab099..8195466 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -70,9 +70,9 @@ dependencies = [
 
 [[package]]
 name = "anyhow"
-version = "1.0.55"
+version = "1.0.56"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "159bb86af3a200e19a068f4224eae4c8bb2d0fa054c7e5d1cacd5cef95e684cd"
+checksum = "4361135be9122e0870de935d7c439aef945b9f9ddd4199a553b5270b49c82a27"
 
 [[package]]
 name = "arrayvec"
@@ -111,7 +111,7 @@ dependencies = [
  "peeking_take_while",
  "proc-macro2",
  "quote",
- "regex 1.5.4",
+ "regex 1.5.5",
  "rustc-hash",
  "shlex",
 ]
@@ -214,9 +214,9 @@ checksum = "e3b5ca7a04898ad4bcd41c90c5285445ff5b791899bb1b0abdd2a2aa791211d7"
 
 [[package]]
 name = "bytemuck"
-version = "1.7.3"
+version = "1.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "439989e6b8c38d1b6570a384ef1e49c8848128f5a97f3914baef02920842712f"
+checksum = "0e851ca7c24871e7336801608a4797d7376545b6928a10d32d75685687141ead"
 
 [[package]]
 name = "byteorder"
@@ -319,9 +319,9 @@ dependencies = [
 
 [[package]]
 name = "clap"
-version = "3.1.2"
+version = "3.1.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5177fac1ab67102d8989464efd043c6ff44191b1557ec1ddd489b4f7e1447e77"
+checksum = "d8c93436c21e4698bacadf42917db28b23017027a4deccb35dbe47a7e7840123"
 dependencies = [
  "atty",
  "bitflags",
@@ -331,14 +331,14 @@ dependencies = [
  "os_str_bytes",
  "strsim 0.10.0",
  "termcolor",
- "textwrap 0.14.2",
+ "textwrap 0.15.0",
 ]
 
 [[package]]
 name = "clap_derive"
-version = "3.1.2"
+version = "3.1.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "01d42c94ce7c2252681b5fed4d3627cc807b13dfc033246bd05d5b252399000e"
+checksum = "da95d038ede1a964ce99f49cbe27a7fb538d1da595e4b4f70b8c8f338d17bf16"
 dependencies = [
  "heck 0.4.0",
  "proc-macro-error",
@@ -372,7 +372,7 @@ dependencies = [
  "encode_unicode",
  "libc",
  "once_cell",
- "regex 1.5.4",
+ "regex 1.5.5",
  "terminal_size",
  "unicode-width",
  "winapi 0.3.9",
@@ -639,7 +639,7 @@ dependencies = [
  "atty",
  "humantime",
  "log",
- "regex 1.5.4",
+ "regex 1.5.5",
  "termcolor",
 ]
 
@@ -1101,7 +1101,7 @@ dependencies = [
 name = "mps"
 version = "0.6.0"
 dependencies = [
- "clap 3.1.2",
+ "clap 3.1.6",
  "console",
  "mps-interpreter",
  "mps-player",
@@ -1114,7 +1114,7 @@ dependencies = [
  "bliss-audio",
  "dirs",
  "rand",
- "regex 1.5.4",
+ "regex 1.5.5",
  "rusqlite",
  "shellexpand",
  "symphonia 0.5.0",
@@ -1124,7 +1124,7 @@ dependencies = [
 name = "mps-m3u8"
 version = "0.6.0"
 dependencies = [
- "clap 3.1.2",
+ "clap 3.1.6",
  "m3u8-rs",
  "mps-interpreter",
 ]
@@ -1374,18 +1374,18 @@ dependencies = [
 
 [[package]]
 name = "num_enum"
-version = "0.5.6"
+version = "0.5.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "720d3ea1055e4e4574c0c0b0f8c3fd4f24c4cdaf465948206dea090b57b526ad"
+checksum = "cf5395665662ef45796a4ff5486c5d41d29e0c09640af4c5f17fd94ee2c119c9"
 dependencies = [
  "num_enum_derive",
 ]
 
 [[package]]
 name = "num_enum_derive"
-version = "0.5.6"
+version = "0.5.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0d992b768490d7fe0d8586d9b5745f6c49f557da6d81dc982b1d167ad4edbb21"
+checksum = "3b0498641e53dd6ac1a4f22547548caa6864cc4933784319cd1775271c5a46ce"
 dependencies = [
  "proc-macro-crate",
  "proc-macro2",
@@ -1427,9 +1427,9 @@ dependencies = [
 
 [[package]]
 name = "once_cell"
-version = "1.9.0"
+version = "1.10.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "da32515d9f6e6e489d7bc9d84c71b060db7247dc035bbe44eac88cf87486d8d5"
+checksum = "87f3e037eac156d1775da914196f0f37741a274155e34a0b7e427c35d2a2ecb9"
 
 [[package]]
 name = "opaque-debug"
@@ -1675,9 +1675,9 @@ dependencies = [
 
 [[package]]
 name = "redox_syscall"
-version = "0.2.10"
+version = "0.2.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8383f39639269cde97d255a32bdb68c047337295414940c68bdd30c2e13203ff"
+checksum = "8380fe0152551244f0747b1bf41737e0f8a74f97a14ccefd1148187271634f3c"
 dependencies = [
  "bitflags",
 ]
@@ -1707,9 +1707,9 @@ dependencies = [
 
 [[package]]
 name = "regex"
-version = "1.5.4"
+version = "1.5.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d07a8629359eb56f1e2fb1652bb04212c072a87ba68546a04065d525673ac461"
+checksum = "1a11647b6b25ff05a515cb92c365cec08801e83423a235b51e231e1808747286"
 dependencies = [
  "aho-corasick 0.7.18",
  "memchr 2.4.1",
@@ -2257,9 +2257,9 @@ dependencies = [
 
 [[package]]
 name = "termcolor"
-version = "1.1.2"
+version = "1.1.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2dfed899f0eb03f32ee8c6a0aabdb8a7949659e3466561fc0adf54e26d88c5f4"
+checksum = "bab24d30b911b2376f3a13cc2cd443142f0c81dda04c118693e35b3835757755"
 dependencies = [
  "winapi-util",
 ]
@@ -2285,9 +2285,9 @@ dependencies = [
 
 [[package]]
 name = "textwrap"
-version = "0.14.2"
+version = "0.15.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0066c8d12af8b5acd21e00547c3797fde4e8677254a7ee429176ccebbe93dd80"
+checksum = "b1141d4d61095b28419e22cb0bbf02755f5e54e0526f97f1e3d1d160e60885fb"
 
 [[package]]
 name = "thiserror"
diff --git a/src/repl.rs b/src/repl.rs
index 596ba72..e426860 100644
--- a/src/repl.rs
+++ b/src/repl.rs
@@ -170,11 +170,28 @@ fn read_loop<F: FnMut()>(args: &CliArgs, state: &mut ReplState, mut execute: F)
             Key::Backspace => {
                 if state.cursor_rightward_position == 0 {
                     if let Some(c) = state.statement_buf.pop() {
+                        // re-sync syntax tracking
+                        match c {
+                            '"' | '`' => {
+                                if let Some(c2) = state.in_literal {
+                                    if c == c2 {
+                                        state.in_literal = None;
+                                    }
+                                } else {
+                                    state.in_literal = Some(c);
+                                }
+                            },
+                            '(' => if state.bracket_depth != 0 { state.bracket_depth -= 1 },
+                            ')' => state.bracket_depth += 1,
+                            '{' => if state.curly_depth != 0 { state.curly_depth -= 1 },
+                            '}' => state.curly_depth += 1,
+                            _ => {},
+                        }
                         match c {
                             '\n' | '\r' => {
                                 // another line, cannot backspace that far
                                 state.statement_buf.push(c);
-                            }
+                            },
                             _ => {
                                 state.current_line.pop();
                                 state.terminal.move_cursor_left(1).expect("Failed to write to terminal output");
@@ -192,10 +209,12 @@ fn read_loop<F: FnMut()>(args: &CliArgs, state: &mut ReplState, mut execute: F)
                         // re-sync unclosed syntax tracking
                         match removed_char {
                             '"' | '`' => {
-                                if let Some(c) = state.in_literal {
-                                    if c == removed_char {
+                                if let Some(c2) = state.in_literal {
+                                    if removed_char == c2 {
                                         state.in_literal = None;
                                     }
+                                } else {
+                                    state.in_literal = Some(removed_char);
                                 }
                             },
                             '(' => if state.bracket_depth != 0 { state.bracket_depth -= 1 },