diff --git a/.gitmodules b/.gitmodules
index b64280c6..20e0bbb4 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -49,9 +49,6 @@
 [submodule "assets/themes/zenburn"]
 	path = assets/themes/zenburn
 	url = https://github.com/colinta/zenburn.git
-[submodule "assets/syntaxes/Kotlin"]
-	path = assets/syntaxes/02_Extra/Kotlin
-	url = https://github.com/vkostyukov/kotlin-sublime-package
 [submodule "assets/syntaxes/Elm"]
 	path = assets/syntaxes/02_Extra/Elm
 	url = https://github.com/elm-community/SublimeElmLanguageSupport
@@ -281,3 +278,6 @@
 [submodule "assets/syntaxes/02_Extra/COBOL"]
 	path = assets/syntaxes/02_Extra/COBOL
 	url = https://github.com/adukhan99/sublime_cobol.git
+[submodule "assets/syntaxes/02_Extra/Kotlin"]
+	path = assets/syntaxes/02_Extra/Kotlin
+	url = https://github.com/guille/sublime-kotlin
diff --git a/CHANGELOG.md b/CHANGELOG.md
index bd76e2e7..090a019c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -22,6 +22,9 @@
 
 ## Bugfixes
 - Fix `--list-themes` unconditionally probing the terminal via OSC 10/11 even when `--theme` was set to an explicit value, see #3700 (regression introduced in bc42149a). (@optimistiCli)
+- Fix inverted `$LESSCLOSE` warning so bat warns on nonzero exit, not on success. See #3654 (@cuiweixie)
+- Sanitize control characters in filenames before displaying them in the file header, error messages, and the terminal title, preventing ANSI escape injection via crafted filenames. Closes #3054, see #3691 (@curious-rabbit)
+- Report initial input read errors instead of treating them as empty input. Closes #3002, see #3706 (@lawrence3699)
 - Treat ZIP archives as binary content based on their magic header, see #3686 (@officialasishkumar)
 - Fix i686 `.deb` package using incorrect architecture name (`i686` instead of `i386`), preventing installation on Debian. Closes #3611, see #3650 (@Sim-hu)
 - Fix inconsistent `.deb` MUSL package names (aarch64-musl used `arm64` instead of `musl-linux-arm64`, and `musleabihf` target missed `bat-musl` prefix). Closes #3482, see #3642 (@mvanhorn)
@@ -37,6 +40,7 @@
 - Fixed test compatibility with future Cargo build directory changes, see #3550 (@nmacl)
 - Fixed bug caused by using `--plain` and `--terminal-width=N` flags simultaneously, see #3529 (@H4k1l)
 - Fixed syntax tests path, see #3610 (@foxfromworld)
+- Fix zsh tab completion word-splitting language names containing spaces (e.g. `HTML (Jinja2)`, `Apache Conf`), see #3693 (@YoshKoz)
 
 ## Other
 - Use git version of cross. See #3533 (@OctopusET)
@@ -54,6 +58,7 @@
 - Fixed manpage syntax so that ANSI escape codes don't get incorrectly highlighted and thus broken, see #3586 (@BlueElectivire)
 - Map several Google Cloud CLI config files to their appropriate syntax #3635 (@victor-gp)
 - Map all ignore dotfiles to Git Ignore syntax #3636 (@victor-gp)
+- Improved Kotlin syntax, see #3699 (@guille)
 
 ## Themes
 
diff --git a/README.md b/README.md
index d6ef3381..375ec6d7 100644
--- a/README.md
+++ b/README.md
@@ -19,20 +19,6 @@
   [<a href="doc/README-ru.md">Русский</a>]
 </p>
 
-### Sponsors
-
-A special *thank you* goes to our biggest <a href="doc/sponsors.md">sponsors</a>:<br>
-
-<p>
-<a href="https://www.warp.dev/bat">
-  <img src="doc/sponsors/warp-logo.png" width="200" alt="Warp">
-  <br>
-  <strong>Warp, the intelligent terminal</strong>
-  <br>
-  <sub>Available on MacOS, Linux, Windows</sub>
-</a>
-</p>
-
 ### Syntax highlighting
 
 `bat` supports syntax highlighting for a large number of programming and markup
@@ -208,12 +194,6 @@ Note that the [Manpage syntax](assets/syntaxes/02_Extra/Manpage.sublime-syntax)
 
 The [`prettybat`](https://github.com/eth-p/bat-extras/blob/master/doc/prettybat.md) script is a wrapper that will format code and print it with `bat`.
 
-#### `Warp`
-
-<a href="https://app.warp.dev/drive/folder/-Bat-Warp-Pack-lxhe7HrEwgwpG17mvrFSz1">
-  <img src="doc/sponsors/warp-pack-header.png" alt="Warp">
-</a>
-
 #### Highlighting `--help` messages
 
 You can use `bat` to colorize help text: `$ cp --help | bat -plhelp`
diff --git a/assets/completions/bat.zsh.in b/assets/completions/bat.zsh.in
index 3c3f81d1..f8de56e4 100644
--- a/assets/completions/bat.zsh.in
+++ b/assets/completions/bat.zsh.in
@@ -90,7 +90,7 @@ _{{PROJECT_EXECUTABLE}}_main() {
         languages)
             local IFS=$'\n'
             local -a languages
-            languages=( $({{PROJECT_EXECUTABLE}} --list-languages | awk -F':|,' '{ for (i = 1; i <= NF; ++i) printf("%s:%s\n", $i, $1) }') )
+            languages=( ${(f)"$({{PROJECT_EXECUTABLE}} --list-languages | awk -F':|,' '{ for (i = 1; i <= NF; ++i) printf("%s:%s\n", $i, $1) }')"} )
 
             _describe 'language' languages && ret=0
         ;;
diff --git a/assets/syntaxes/02_Extra/Idris2 b/assets/syntaxes/02_Extra/Idris2
index bbfe50e0..4d8eb35a 160000
--- a/assets/syntaxes/02_Extra/Idris2
+++ b/assets/syntaxes/02_Extra/Idris2
@@ -1 +1 @@
-Subproject commit bbfe50e023e0edc74f5e0c003eb946528d49279f
+Subproject commit 4d8eb35a38254d422030e77b4933530008dd3c6e
diff --git a/assets/syntaxes/02_Extra/Kotlin b/assets/syntaxes/02_Extra/Kotlin
index aeeed278..c3536941 160000
--- a/assets/syntaxes/02_Extra/Kotlin
+++ b/assets/syntaxes/02_Extra/Kotlin
@@ -1 +1 @@
-Subproject commit aeeed2780b04aea3d293c547c24cae27cafef0c5
+Subproject commit c353694169c047bd746c93c214289fc52d152cae
diff --git a/assets/syntaxes/02_Extra/Kotlin.sublime-syntax b/assets/syntaxes/02_Extra/Kotlin.sublime-syntax
deleted file mode 100644
index eab59192..00000000
--- a/assets/syntaxes/02_Extra/Kotlin.sublime-syntax
+++ /dev/null
@@ -1,398 +0,0 @@
-%YAML 1.2
----
-# http://www.sublimetext.com/docs/3/syntax.html
-name: Kotlin
-file_extensions:
-  - kt
-  - kts
-scope: source.Kotlin
-contexts:
-  main:
-    - include: comments
-    - match: '^\s*(package)\b(?:\s*([^ ;$]+)\s*)?'
-      captures:
-        1: keyword.other.kotlin
-        2: entity.name.package.kotlin
-    - include: imports
-    - include: statements
-  classes:
-    - match: (?<!::)(?=\b(?:companion|class|object|interface)\b)
-      push:
-        - match: '(?=$|\})'
-          pop: true
-        - include: comments
-        - match: \b(companion\s*)?(class|object|interface)\b
-          captures:
-            1: storage.modifier.kotlin
-            2: storage.modifier.kotlin
-          push:
-            - match: '(?=<|\{|\(|:|$)'
-              pop: true
-            - include: comments
-            - match: \w+
-              scope: entity.name.type.class.kotlin
-        - match: <
-          push:
-            - match: ">"
-              pop: true
-            - include: generics
-        - match: \(
-          push:
-            - match: \)
-              pop: true
-            - include: parameters
-        - match: (:)
-          captures:
-            1: keyword.operator.declaration.kotlin
-          push:
-            - match: "(?={|$)"
-              pop: true
-            - match: \w+
-              scope: entity.other.inherited-class.kotlin
-            - match: \(
-              push:
-                - match: \)
-                  pop: true
-                - include: expressions
-        - match: '\{'
-          push:
-            - match: '\}'
-              pop: true
-            - include: statements
-  comments:
-    - match: /\*
-      captures:
-        0: punctuation.definition.comment.kotlin
-      push:
-        - meta_scope: comment.block.kotlin
-        - match: \*/
-          captures:
-            0: punctuation.definition.comment.kotlin
-          pop: true
-    - match: \s*((//).*$\n?)
-      captures:
-        1: comment.line.double-slash.kotlin
-        2: punctuation.definition.comment.kotlin
-  constants:
-    - match: \b(true|false|null|this|super)\b
-      scope: constant.language.kotlin
-    - match: '\b((0(x|X)[0-9a-fA-F]*)|(([0-9]+\.?[0-9]*)|(\.[0-9]+))((e|E)(\+|-)?[0-9]+)?)([LlFf])?\b'
-      scope: constant.numeric.kotlin
-    - match: '\b([A-Z][A-Z0-9_]+)\b'
-      scope: constant.other.kotlin
-  expressions:
-    - match: \(
-      push:
-        - match: \)
-          pop: true
-        - include: expressions
-    - include: types
-    - include: strings
-    - include: constants
-    - include: comments
-    - include: keywords
-  functions:
-    - match: (?=\s*\b(?:fun)\b)
-      push:
-        - match: '(?=$|\})'
-          pop: true
-        - match: \b(fun)\b
-          captures:
-            1: keyword.other.kotlin
-          push:
-            - match: (?=\()
-              pop: true
-            - match: <
-              push:
-                - match: ">"
-                  pop: true
-                - include: generics
-            - match: '([\.<\?>\w]+\.)?(\w+)'
-              captures:
-                2: entity.name.function.kotlin
-        - match: \(
-          push:
-            - match: \)
-              pop: true
-            - include: parameters
-        - match: (:)
-          captures:
-            1: keyword.operator.declaration.kotlin
-          push:
-            - match: "(?={|=|$)"
-              pop: true
-            - include: types
-        - match: '\{'
-          push:
-            - match: '(?=\})'
-              pop: true
-            - include: statements
-        - match: (=)
-          captures:
-            1: keyword.operator.assignment.kotlin
-          push:
-            - match: (?=$)
-              pop: true
-            - include: expressions
-  generics:
-    - match: (:)
-      captures:
-        1: keyword.operator.declaration.kotlin
-      push:
-        - match: (?=,|>)
-          pop: true
-        - include: types
-    - include: keywords
-    - match: \w+
-      scope: storage.type.generic.kotlin
-  getters-and-setters:
-    - match: \b(get)\b\s*\(\s*\)
-      captures:
-        1: entity.name.function.kotlin
-      push:
-        - match: '\}|(?=\bset\b)|$'
-          pop: true
-        - match: (=)
-          captures:
-            1: keyword.operator.assignment.kotlin
-          push:
-            - match: (?=$|\bset\b)
-              pop: true
-            - include: expressions
-        - match: '\{'
-          push:
-            - match: '\}'
-              pop: true
-            - include: expressions
-    - match: \b(set)\b\s*(?=\()
-      captures:
-        1: entity.name.function.kotlin
-      push:
-        - match: '\}|(?=\bget\b)|$'
-          pop: true
-        - match: \(
-          push:
-            - match: \)
-              pop: true
-            - include: parameters
-        - match: (=)
-          captures:
-            1: keyword.operator.assignment.kotlin
-          push:
-            - match: (?=$|\bset\b)
-              pop: true
-            - include: expressions
-        - match: '\{'
-          push:
-            - match: '\}'
-              pop: true
-            - include: expressions
-  imports:
-    - match: '^\s*(import)\s+[^ $]+\s+(as)?'
-      captures:
-        1: keyword.other.kotlin
-        2: keyword.other.kotlin
-  keywords:
-    - match: \b(var|val|public|private|protected|abstract|final|sealed|enum|open|attribute|annotation|override|inline|vararg|in|out|internal|data|tailrec|operator|infix|const|yield|typealias|typeof|reified|suspend)\b
-      scope: storage.modifier.kotlin
-    - match: \b(try|catch|finally|throw)\b
-      scope: keyword.control.catch-exception.kotlin
-    - match: \b(if|else|while|for|do|return|when|where|break|continue)\b
-      scope: keyword.control.kotlin
-    - match: \b(in|is|!in|!is|as|as\?|assert)\b
-      scope: keyword.operator.kotlin
-    - match: (==|!=|===|!==|<=|>=|<|>)
-      scope: keyword.operator.comparison.kotlin
-    - match: (=)
-      scope: keyword.operator.assignment.kotlin
-    - match: (::)
-      scope: keyword.operator.kotlin
-    - match: (:)
-      scope: keyword.operator.declaration.kotlin
-    - match: \b(by)\b
-      scope: keyword.other.by.kotlin
-    - match: (\?\.)
-      scope: keyword.operator.safenav.kotlin
-    - match: (\.)
-      scope: keyword.operator.dot.kotlin
-    - match: (\?:)
-      scope: keyword.operator.elvis.kotlin
-    - match: (\-\-|\+\+)
-      scope: keyword.operator.increment-decrement.kotlin
-    - match: (\+=|\-=|\*=|\/=)
-      scope: keyword.operator.arithmetic.assign.kotlin
-    - match: (\.\.)
-      scope: keyword.operator.range.kotlin
-    - match: (\-|\+|\*|\/|%)
-      scope: keyword.operator.arithmetic.kotlin
-    - match: (!|&&|\|\|)
-      scope: keyword.operator.logical.kotlin
-    - match: (;)
-      scope: punctuation.terminator.kotlin
-  namespaces:
-    - match: \b(namespace)\b
-      scope: keyword.other.kotlin
-    - match: '\{'
-      push:
-        - match: '\}'
-          pop: true
-        - include: statements
-  parameters:
-    - match: (:)
-      captures:
-        1: keyword.operator.declaration.kotlin
-      push:
-        - match: (?=,|\)|=)
-          pop: true
-        - include: types
-    - match: (=)
-      captures:
-        1: keyword.operator.declaration.kotlin
-      push:
-        - match: (?=,|\))
-          pop: true
-        - include: expressions
-    - include: keywords
-    - match: \w+
-      scope: variable.parameter.function.kotlin
-  statements:
-    - include: namespaces
-    - include: typedefs
-    - include: classes
-    - include: functions
-    - include: variables
-    - include: getters-and-setters
-    - include: expressions
-  strings:
-    - match: '"""'
-      captures:
-        0: punctuation.definition.string.begin.kotlin
-      push:
-        - meta_scope: string.quoted.third.kotlin
-        - match: '"""'
-          captures:
-            0: punctuation.definition.string.end.kotlin
-          pop: true
-        - match: '(\$\w+|\$\{[^\}]+\})'
-          scope: variable.parameter.template.kotlin
-        - match: \\.
-          scope: constant.character.escape.kotlin
-    - match: '"'
-      captures:
-        0: punctuation.definition.string.begin.kotlin
-      push:
-        - meta_scope: string.quoted.double.kotlin
-        - match: '"'
-          captures:
-            0: punctuation.definition.string.end.kotlin
-          pop: true
-        - match: '(\$\w+|\$\{[^\}]+\})'
-          scope: variable.parameter.template.kotlin
-        - match: \\.
-          scope: constant.character.escape.kotlin
-    - match: "'"
-      captures:
-        0: punctuation.definition.string.begin.kotlin
-      push:
-        - meta_scope: string.quoted.single.kotlin
-        - match: "'"
-          captures:
-            0: punctuation.definition.string.end.kotlin
-          pop: true
-        - match: \\.
-          scope: constant.character.escape.kotlin
-    - match: "`"
-      captures:
-        0: punctuation.definition.string.begin.kotlin
-      push:
-        - meta_scope: string.quoted.single.kotlin
-        - match: "`"
-          captures:
-            0: punctuation.definition.string.end.kotlin
-          pop: true
-  typedefs:
-    - match: (?=\s*(?:type))
-      push:
-        - match: (?=$)
-          pop: true
-        - match: \b(type)\b
-          scope: keyword.other.kotlin
-        - match: <
-          push:
-            - match: ">"
-              pop: true
-            - include: generics
-        - include: expressions
-  types:
-    - match: \b(Nothing|Any|Unit|String|CharSequence|Int|Boolean|Char|Long|Double|Float|Short|Byte|dynamic)\b
-      scope: storage.type.buildin.kotlin
-    - match: \b(IntArray|BooleanArray|CharArray|LongArray|DoubleArray|FloatArray|ShortArray|ByteArray)\b
-      scope: storage.type.buildin.array.kotlin
-    - match: \b(Array|Collection|List|Map|Set|MutableList|MutableMap|MutableSet|Sequence)<\b
-      captures:
-        1: storage.type.buildin.collection.kotlin
-      push:
-        - match: ">"
-          pop: true
-        - include: types
-        - include: keywords
-    - match: \w+<
-      push:
-        - match: ">"
-          pop: true
-        - include: types
-        - include: keywords
-    - match: '\{'
-      push:
-        - match: '\}'
-          pop: true
-        - include: statements
-    - match: \(
-      push:
-        - match: \)
-          pop: true
-        - include: types
-    - match: (->)
-      scope: keyword.operator.declaration.kotlin
-  variables:
-    - match: (?=\s*\b(?:var|val)\b)
-      push:
-        - match: (?=:|=|(\b(by)\b)|$)
-          pop: true
-        - match: \b(var|val)\b
-          captures:
-            1: keyword.other.kotlin
-          push:
-            - match: (?=:|=|(\b(by)\b)|$)
-              pop: true
-            - match: <
-              push:
-                - match: ">"
-                  pop: true
-                - include: generics
-            - match: '([\.<\?>\w]+\.)?(\w+)'
-              captures:
-                2: entity.name.variable.kotlin
-        - match: (:)
-          captures:
-            1: keyword.operator.declaration.kotlin
-          push:
-            - match: (?==|$)
-              pop: true
-            - include: types
-            - include: getters-and-setters
-        - match: \b(by)\b
-          captures:
-            1: keyword.other.kotlin
-          push:
-            - match: (?=$)
-              pop: true
-            - include: expressions
-        - match: (=)
-          captures:
-            1: keyword.operator.assignment.kotlin
-          push:
-            - match: (?=$)
-              pop: true
-            - include: expressions
-            - include: getters-and-setters
diff --git a/doc/sponsors.md b/doc/sponsors.md
index 24509077..641e5205 100644
--- a/doc/sponsors.md
+++ b/doc/sponsors.md
@@ -10,5 +10,3 @@ No issue will have a different priority based on sponsorship status of the
 reporter.
 
 Contributions from anybody are most welcomed, please see our [`CONTRIBUTING.md`](../CONTRIBUTING.md) guide.
-
-If you want to see our biggest sponsors, check the top of [`README.md`](../README.md#sponsors).
diff --git a/doc/sponsors/graphite-logo.jpeg b/doc/sponsors/graphite-logo.jpeg
deleted file mode 100644
index 00443818..00000000
Binary files a/doc/sponsors/graphite-logo.jpeg and /dev/null differ
diff --git a/doc/sponsors/warp-logo.png b/doc/sponsors/warp-logo.png
deleted file mode 100644
index f99dd38c..00000000
Binary files a/doc/sponsors/warp-logo.png and /dev/null differ
diff --git a/doc/sponsors/warp-pack-header.png b/doc/sponsors/warp-pack-header.png
deleted file mode 100644
index ed7efe6a..00000000
Binary files a/doc/sponsors/warp-pack-header.png and /dev/null differ
diff --git a/src/assets.rs b/src/assets.rs
index 29247bd7..9483f032 100644
--- a/src/assets.rs
+++ b/src/assets.rs
@@ -158,7 +158,9 @@ impl HighlightingAssets {
         let syntax_match = mapping.get_syntax_for(path);
 
         if let Some(MappingTarget::MapToUnknown) = syntax_match {
-            return Err(Error::UndetectedSyntax(path.to_string_lossy().into()));
+            return Err(Error::UndetectedSyntax(
+                crate::preprocessor::sanitize_for_terminal(&path.to_string_lossy()),
+            ));
         }
 
         if let Some(MappingTarget::MapTo(syntax_name)) = syntax_match {
@@ -175,13 +177,17 @@ impl HighlightingAssets {
         ) {
             (Some(syntax), _) => Ok(syntax),
 
-            (_, Some(MappingTarget::MapExtensionToUnknown)) => {
-                Err(Error::UndetectedSyntax(path.to_string_lossy().into()))
-            }
+            (_, Some(MappingTarget::MapExtensionToUnknown)) => Err(Error::UndetectedSyntax(
+                crate::preprocessor::sanitize_for_terminal(&path.to_string_lossy()),
+            )),
 
             _ => self
                 .get_syntax_for_file_extension(file_name, &mapping.ignored_suffixes)?
-                .ok_or_else(|| Error::UndetectedSyntax(path.to_string_lossy().into())),
+                .ok_or_else(|| {
+                    Error::UndetectedSyntax(crate::preprocessor::sanitize_for_terminal(
+                        &path.to_string_lossy(),
+                    ))
+                }),
         }
     }
 
diff --git a/src/bin/bat/main.rs b/src/bin/bat/main.rs
index 5184cf99..1d89f8ec 100644
--- a/src/bin/bat/main.rs
+++ b/src/bin/bat/main.rs
@@ -258,7 +258,9 @@ pub fn list_themes(
 fn set_terminal_title_to(new_terminal_title: String) {
     let osc_command_for_setting_terminal_title = "\x1b]0;";
     let osc_end_command = "\x07";
-    print!("{osc_command_for_setting_terminal_title}{new_terminal_title}{osc_end_command}");
+    // Prevent BEL/ESC/C1 bytes in the title from terminating or nesting the OSC.
+    let safe_title = bat::sanitize_for_terminal(&new_terminal_title);
+    print!("{osc_command_for_setting_terminal_title}{safe_title}{osc_end_command}");
     io::stdout().flush().unwrap();
 }
 
diff --git a/src/input.rs b/src/input.rs
index 30f13f98..facd64bf 100644
--- a/src/input.rs
+++ b/src/input.rs
@@ -207,7 +207,7 @@ impl<'a> Input<'a> {
                     kind: OpenedInputKind::StdIn,
                     description,
                     metadata: self.metadata,
-                    reader: InputReader::new(stdin),
+                    reader: InputReader::try_new(stdin)?,
                 })
             }
 
@@ -216,34 +216,34 @@ impl<'a> Input<'a> {
                 description,
                 metadata: self.metadata,
                 reader: {
-                    let mut file = File::open(&path)
-                        .map_err(|e| format!("'{}': {e}", path.to_string_lossy()))?;
+                    let path_display =
+                        crate::preprocessor::sanitize_for_terminal(&path.to_string_lossy());
+                    let mut file =
+                        File::open(&path).map_err(|e| format!("'{path_display}': {e}"))?;
                     if file.metadata()?.is_dir() {
-                        return Err(format!("'{}' is a directory.", path.to_string_lossy()).into());
+                        return Err(format!("'{path_display}' is a directory.").into());
                     }
 
                     if let Some(stdout) = stdout_identifier {
-                        let input_identifier = Identifier::try_from(file).map_err(|e| {
-                            format!("{}: Error identifying file: {e}", path.to_string_lossy())
-                        })?;
+                        let input_identifier = Identifier::try_from(file)
+                            .map_err(|e| format!("{path_display}: Error identifying file: {e}"))?;
                         if stdout.surely_conflicts_with(&input_identifier) {
                             return Err(format!(
-                                "IO circle detected. The input from '{}' is also an output. Aborting to avoid infinite loop.",
-                                path.to_string_lossy()
+                                "IO circle detected. The input from '{path_display}' is also an output. Aborting to avoid infinite loop.",
                             )
                             .into());
                         }
                         file = input_identifier.into_inner().expect("The file was lost in the clircle::Identifier, this should not have happened...");
                     }
 
-                    InputReader::new(BufReader::new(file))
+                    InputReader::try_new(BufReader::new(file))?
                 },
             }),
             InputKind::CustomReader(reader) => Ok(OpenedInput {
                 description,
                 kind: OpenedInputKind::CustomReader,
                 metadata: self.metadata,
-                reader: InputReader::new(BufReader::new(reader)),
+                reader: InputReader::try_new(BufReader::new(reader))?,
             }),
         }
     }
@@ -257,24 +257,29 @@ pub(crate) struct InputReader<'a> {
 }
 
 impl<'a> InputReader<'a> {
-    pub(crate) fn new<R: BufRead + 'a>(mut reader: R) -> InputReader<'a> {
+    #[cfg(test)]
+    pub(crate) fn new<R: BufRead + 'a>(reader: R) -> InputReader<'a> {
+        Self::try_new(reader).expect("reading the first line failed")
+    }
+
+    pub(crate) fn try_new<R: BufRead + 'a>(mut reader: R) -> io::Result<InputReader<'a>> {
         let mut first_line = vec![];
-        reader.read_until(b'\n', &mut first_line).ok();
+        reader.read_until(b'\n', &mut first_line)?;
 
         let content_type = inspect_content_type(&first_line);
 
         if content_type == Some(ContentType::UTF_16LE) {
-            read_utf16_line(&mut reader, &mut first_line, 0x00, 0x0A).ok();
+            read_utf16_line(&mut reader, &mut first_line, 0x00, 0x0A)?;
         } else if content_type == Some(ContentType::UTF_16BE) {
-            read_utf16_line(&mut reader, &mut first_line, 0x0A, 0x00).ok();
+            read_utf16_line(&mut reader, &mut first_line, 0x0A, 0x00)?;
         }
 
-        InputReader {
+        Ok(InputReader {
             inner: Box::new(reader),
             first_line,
             content_type,
             unbuffered: false,
-        }
+        })
     }
 
     pub(crate) fn read_line(&mut self, buf: &mut Vec<u8>) -> io::Result<bool> {
@@ -405,6 +410,27 @@ fn non_zip_pk_prefix_is_not_treated_as_binary() {
     );
 }
 
+#[test]
+fn input_open_returns_initial_read_errors() {
+    struct FailingRead;
+
+    impl Read for FailingRead {
+        fn read(&mut self, _buf: &mut [u8]) -> io::Result<usize> {
+            Err(io::Error::other("initial read failed"))
+        }
+    }
+
+    let input = Input::from_reader(Box::new(FailingRead));
+    let result = input.open(io::empty(), None);
+
+    assert!(result.is_err());
+    assert!(result
+        .err()
+        .unwrap()
+        .to_string()
+        .contains("initial read failed"));
+}
+
 #[test]
 fn utf16le() {
     let content = b"\xFF\xFE\x73\x00\x0A\x00\x64\x00";
diff --git a/src/lessopen.rs b/src/lessopen.rs
index 966bc2c0..c7593b53 100644
--- a/src/lessopen.rs
+++ b/src/lessopen.rs
@@ -155,7 +155,7 @@ impl LessOpenPreprocessor {
 
         Ok(OpenedInput {
             kind,
-            reader: InputReader::new(BufReader::new(
+            reader: InputReader::try_new(BufReader::new(
                 if matches!(self.kind, LessOpenKind::TempFile) {
                     let lessopen_string = match String::from_utf8(lessopen_stdout) {
                         Ok(string) => string,
@@ -192,7 +192,7 @@ impl LessOpenPreprocessor {
                             .map(|s| s.replacen("%s", &path_str, 1).replacen("%s", "-", 1)),
                     }
                 },
-            )),
+            ))?,
             metadata: input.metadata,
             description: input.description,
         })
@@ -261,7 +261,7 @@ impl Drop for Preprocessed {
                 }
             };
 
-            if lessclose_output.status.success() {
+            if !lessclose_output.status.success() {
                 bat_warning!("$LESSCLOSE exited with nonzero exit code",)
             };
         }
diff --git a/src/lib.rs b/src/lib.rs
index 4c60f10e..685214dc 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -54,6 +54,7 @@ mod vscreen;
 pub(crate) mod wrapping;
 
 pub use nonprintable_notation::{BinaryBehavior, NonprintableNotation};
+pub use preprocessor::sanitize_for_terminal;
 pub use preprocessor::StripAnsiMode;
 pub use pretty_printer::{Input, PrettyPrinter, Syntax};
 pub use syntax_mapping::{MappingTarget, SyntaxMapping};
diff --git a/src/preprocessor.rs b/src/preprocessor.rs
index 6b4e2935..a34f9f9e 100644
--- a/src/preprocessor.rs
+++ b/src/preprocessor.rs
@@ -149,6 +149,35 @@ pub fn strip_ansi(line: &str) -> String {
     buffer
 }
 
+/// Escape C0, DEL, and C1 control characters so a string from an untrusted
+/// filename or path can be safely written to the terminal.
+pub fn sanitize_for_terminal(input: &str) -> String {
+    if !input
+        .chars()
+        .any(|c| matches!(c, '\x00'..='\x08' | '\x0A'..='\x1F' | '\x7F'..='\u{9F}'))
+    {
+        return input.to_owned();
+    }
+
+    let mut out = String::with_capacity(input.len() + 8);
+    for c in input.chars() {
+        match c {
+            '\t' => out.push('\t'),
+            '\x00'..='\x1F' => {
+                out.push('^');
+                out.push(char::from_u32(0x40 + c as u32).unwrap_or('?'));
+            }
+            '\x7F' => out.push_str("^?"),
+            '\u{80}'..='\u{9F}' => {
+                use std::fmt::Write as _;
+                let _ = write!(out, "\\u{{{:x}}}", c as u32);
+            }
+            other => out.push(other),
+        }
+    }
+    out
+}
+
 /// Strips overstrike sequences (backspace formatting) from input.
 ///
 /// Overstrike formatting is used by man pages and some help output:
@@ -261,3 +290,40 @@ fn test_strip_overstrike() {
     // Unicode with overstrike
     assert_eq!(strip_overstrike("ä\x08äöü", 2), "äöü");
 }
+
+#[test]
+fn test_sanitize_for_terminal_passthrough() {
+    assert_eq!(sanitize_for_terminal(""), "");
+    assert_eq!(sanitize_for_terminal("hello.txt"), "hello.txt");
+    assert_eq!(sanitize_for_terminal("résumé.pdf"), "résumé.pdf");
+    assert_eq!(sanitize_for_terminal("日本語.md"), "日本語.md");
+    assert_eq!(
+        sanitize_for_terminal("path/with spaces/file.log"),
+        "path/with spaces/file.log"
+    );
+    assert_eq!(sanitize_for_terminal("a\tb"), "a\tb");
+}
+
+#[test]
+fn test_sanitize_for_terminal_c0_controls() {
+    assert_eq!(
+        sanitize_for_terminal("\x1b[31mINJECTED\x1b[0m.txt"),
+        "^[[31mINJECTED^[[0m.txt"
+    );
+    assert_eq!(sanitize_for_terminal("bad\x07rest"), "bad^Grest");
+    assert_eq!(sanitize_for_terminal("\x00\x08\n\r\x7F"), "^@^H^J^M^?");
+    assert_eq!(sanitize_for_terminal("\u{9b}31m"), "\\u{9b}31m");
+    assert_eq!(
+        sanitize_for_terminal("\u{9d}0;pwned\x07"),
+        "\\u{9d}0;pwned^G"
+    );
+}
+
+#[test]
+fn test_sanitize_for_terminal_idempotent_on_sanitized() {
+    let dirty = "\x1b]0;pwned\x07file.txt";
+    let clean = sanitize_for_terminal(dirty);
+    assert_eq!(sanitize_for_terminal(&clean), clean);
+    assert!(!clean.contains('\x1b'));
+    assert!(!clean.contains('\x07'));
+}
diff --git a/src/printer.rs b/src/printer.rs
index c58c914d..17f7aa30 100644
--- a/src/printer.rs
+++ b/src/printer.rs
@@ -29,7 +29,9 @@ use crate::error::*;
 use crate::input::OpenedInput;
 use crate::line_range::{MaxBufferedLineNumber, RangeCheckResult};
 use crate::output::OutputHandle;
-use crate::preprocessor::{expand_tabs, replace_nonprintable, strip_ansi, strip_overstrike};
+use crate::preprocessor::{
+    expand_tabs, replace_nonprintable, sanitize_for_terminal, strip_ansi, strip_overstrike,
+};
 use crate::style::StyleComponent;
 use crate::terminal::{as_terminal_escaped, to_ansi_color};
 use crate::vscreen::{AnsiStyle, EscapeSequence, EscapeSequenceIterator};
@@ -489,7 +491,7 @@ impl Printer for InteractivePrinter<'_> {
                      (but will be present if the output of 'bat' is piped). You can use 'bat -A' \
                      to show the binary file contents.",
                     Yellow.paint("[bat warning]"),
-                    input.description.summary(),
+                    sanitize_for_terminal(&input.description.summary()),
                 )?;
             } else if self.config.style_components.grid() {
                 self.print_horizontal_line(handle, '┬')?;
@@ -543,9 +545,11 @@ impl Printer for InteractivePrinter<'_> {
                         "{}{}{mode}",
                         description
                             .kind()
-                            .map(|kind| format!("{kind}: "))
+                            .map(|kind| format!("{}: ", sanitize_for_terminal(kind)))
                             .unwrap_or_else(|| "".into()),
-                        self.colors.header_value.paint(description.title()),
+                        self.colors
+                            .header_value
+                            .paint(sanitize_for_terminal(description.title())),
                     );
                     self.print_header_multiline_component(handle, &header_filename)
                 }
diff --git a/tests/syntax-tests/highlighted/Kotlin/test.kt b/tests/syntax-tests/highlighted/Kotlin/test.kt
index dcb1560e..bb17aba2 100644
--- a/tests/syntax-tests/highlighted/Kotlin/test.kt
+++ b/tests/syntax-tests/highlighted/Kotlin/test.kt
@@ -1,85 +1,85 @@
-import kotlin.math.*
+import kotlin.math.*
 
-data class Example(
-    val name: String,
-    val numbers: List<Int?>
+data class Example(
+    val name: String,
+    val numbers: List<Int?>
 )
 
-fun interface JokeInterface {
-    fun isFunny(): Boolean
+fun interface JokeInterface {
+    fun isFunny(): Boolean
 }
 
-abstract class AbstractJoke : JokeInterface {
-    override fun isFunny() = false
-    abstract fun content(): String
+abstract class AbstractJoke : JokeInterface {
+    override fun isFunny() = false
+    abstract fun content(): String
 }
 
-class Joke : AbstractJoke() {
-    override fun isFunny(): Boolean {
+class Joke : AbstractJoke() {
+    override fun isFunny(): Boolean {
         return true
-    }
-    override fun content(): String = "content of joke here, haha"
+    }
+    override fun content(): String = "content of joke here, haha"
 }
 
-class DelegatedJoke(val joke: Joke) : JokeInterface by joke {
-    val number: Long = 123L
+class DelegatedJoke(val joke: Joke) : JokeInterface by joke {
+    val number: Long = 123L
 
-    companion object {
-        const val someConstant = "some constant text"
-    }
+    companion object {
+        const val someConstant = "some constant text"
+    }
 }
 
-object SomeSingleton
+object SomeSingleton
 
-sealed class Shape {
-    abstract fun area(): Double
+sealed class Shape {
+    abstract fun area(): Double
 }
 
-data class Square(val sideLength: Double) : Shape() {
-    override fun area(): Double = sideLength.pow(2)
+data class Square(val sideLength: Double) : Shape() {
+    override fun area(): Double = sideLength.pow(2)
 }
 
-object Point : Shape() {
-    override fun area() = .0
+object Point : Shape() {
+    override fun area() = .0
 }
 
-class Circle(val radius: Double) : Shape() {
-    override fun area(): Double {
-        return PI * radius * radius
-    }
+class Circle(val radius: Double) : Shape() {
+    override fun area(): Double {
+        return PI * radius * radius
+    }
 }
 
-fun String.extensionMethod() = "test"
+fun String.extensionMethod() = "test"
 
-fun main() {
-    val name = """
+fun main() {
+    val name = """
        multiline
        string
        
        some numbers: 123123 42
-    """.trimIndent()
-    val example = Example(name = name, numbers = listOf(512, 42, null, -1))
+    """.trimIndent()
+    val example = Example(name = name, numbers = listOf(512, 42, null, -1))
 
-    example.numbers
-        .filterNotNull()
-        .forEach { println(it) }
+    example.numbers
+        .filterNotNull()
+        .forEach { println(it) }
 
-    setOf(Joke(), DelegatedJoke(Joke()).joke)
-        .filter(JokeInterface::isFunny)
-        .map(AbstractJoke::content)
-        .forEachIndexed { index: Int, joke ->
-            println("I heard a funny joke(#${index + 1}): $joke")
-        }
+    setOf(Joke(), DelegatedJoke(Joke()).joke)
+        .filter(JokeInterface::isFunny)
+        .map(AbstractJoke::content)
+        .forEachIndexed { index: Int, joke ->
+            println("I heard a funny joke(#${index + 1}): $joke")
+        }
 
-    listOf(Square(12.3), Point, Circle(5.2))
-        .associateWith(Shape::area)
-        .toList()
-        .sortedBy { it.second }
-        .forEach {
-            println("${it.first}: ${it.second}")
-        }
+    listOf(Square(12.3), Point, Circle(5.2))
+        .associateWith(Shape::area)
+        .toList()
+        .sortedBy { it.second }
+        .forEach {
+            println("${it.first}: ${it.second}")
+        }
 
-    println("some string".extensionMethod())
+    println("some string".extensionMethod())
 
-    require(SomeSingleton::class.simpleName == "SomeSingletonName") { "something does not seem right..." }
+    require(SomeSingleton::class.simpleName == "SomeSingletonName") { "something does not seem right..." }
 }