diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index a98995411..328e05e23 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -52,6 +52,7 @@ jobs:
 
       - name: Install tools
         run: |
+          # smoelius: Prettier is still needed for scripts/update_example_READMEs.sh.
           npm install -g prettier
           rm -f "$HOME"/.cargo/bin/cargo-fmt
           rm -f "$HOME"/.cargo/bin/rustfmt
@@ -61,9 +62,6 @@ jobs:
           cargo install cargo-rdme    || true
           cargo install cargo-sort    || true
 
-      - name: Prettier
-        run: ./scripts/check_prettier.sh
-
       - name: Cargo sort
         run: find . -name Cargo.toml -print0 | xargs -0 -n 1 dirname | xargs -n 1 cargo sort --check --grouped
 
@@ -130,6 +128,7 @@ jobs:
       # smoelius: This list will grow: https://github.com/trailofbits/dylint/issues/636
       - name: Install tools
         run: |
+          npm install -g prettier
           cargo install cargo-hack         || true
           cargo install cargo-msrv         || true
           cargo install cargo-supply-chain || true
diff --git a/cargo-dylint/tests/dylint.rs b/cargo-dylint/tests/dylint.rs
index 51f7e6102..41b5e71e7 100644
--- a/cargo-dylint/tests/dylint.rs
+++ b/cargo-dylint/tests/dylint.rs
@@ -11,8 +11,10 @@ use std::{
     env::{set_current_dir, set_var},
     ffi::OsStr,
     fs::{read_to_string, write},
+    io::{stderr, Write},
     path::Path,
     str::FromStr,
+    sync::Mutex,
 };
 use tempfile::tempdir;
 
@@ -294,6 +296,32 @@ fn msrv() {
     }
 }
 
+#[cfg(not(windows))]
+#[test]
+fn prettier_all_but_examples_and_template() {
+    Command::new("prettier")
+        .args([
+            "--check",
+            "--ignore-path",
+            "cargo-dylint/tests/prettier_ignore.txt",
+            "**/*.md",
+            "**/*.yml",
+        ])
+        .assert()
+        .success();
+}
+
+#[cfg(not(windows))]
+#[test]
+fn prettier_examples_and_template() {
+    preserves_cleanliness("prettier", true, || {
+        Command::new("prettier")
+            .args(["--write", "examples/**/*.md", "internal/template/**/*.md"])
+            .assert()
+            .success();
+    });
+}
+
 // smoelius: `supply_chain` is the only test that uses `supply_chain.json`. So there is no race.
 #[cfg_attr(dylint_lib = "general", allow(non_thread_safe_call_in_test))]
 #[cfg_attr(dylint_lib = "overscoped_allow", allow(overscoped_allow))]
@@ -351,3 +379,51 @@ fn walkdir(include_examples: bool) -> impl Iterator<Item = walkdir::Result<walkd
                 && (include_examples || entry.path().file_name() != Some(OsStr::new("examples")))
         })
 }
+
+static MUTEX: Mutex<()> = Mutex::new(());
+
+fn preserves_cleanliness(test_name: &str, ignore_blank_lines: bool, f: impl FnOnce()) {
+    let _lock = MUTEX.lock().unwrap();
+
+    if cfg!(not(feature = "strict")) && dirty(false).is_some() {
+        #[allow(clippy::explicit_write)]
+        writeln!(
+            stderr(),
+            "Skipping `{test_name}` test as repository is dirty"
+        )
+        .unwrap();
+        return;
+    }
+
+    f();
+
+    if let Some(stdout) = dirty(ignore_blank_lines) {
+        panic!("{}", stdout);
+    }
+
+    // smoelius: If the repository is not dirty with `ignore_blank_lines` set to true, but would be
+    // dirty otherwise, then restore the repository's contents.
+    if ignore_blank_lines && dirty(false).is_some() {
+        Command::new("git")
+            .args(["checkout", "."])
+            .assert()
+            .success();
+    }
+}
+
+fn dirty(ignore_blank_lines: bool) -> Option<String> {
+    let mut command = Command::new("git");
+    command.arg("diff");
+    if ignore_blank_lines {
+        command.arg("--ignore-blank-lines");
+    }
+    let output = command.output().unwrap();
+
+    // smoelius: `--ignore-blank-lines` does not work with `--exit-code`. So instead check whether
+    // stdout is empty.
+    if output.stdout.is_empty() {
+        None
+    } else {
+        Some(String::from_utf8(output.stdout).unwrap())
+    }
+}
diff --git a/cargo-dylint/tests/prettier_ignore.txt b/cargo-dylint/tests/prettier_ignore.txt
new file mode 100644
index 000000000..d34e15f30
--- /dev/null
+++ b/cargo-dylint/tests/prettier_ignore.txt
@@ -0,0 +1,2 @@
+examples
+template
diff --git a/scripts/check_prettier.sh b/scripts/check_prettier.sh
deleted file mode 100755
index 258d4c608..000000000
--- a/scripts/check_prettier.sh
+++ /dev/null
@@ -1,27 +0,0 @@
-#! /bin/bash
-
-# set -x
-set -euo pipefail
-
-if [[ $# -ne 0 ]]; then
-    echo "$0: expect no arguments" >&2
-    exit 1
-fi
-
-SCRIPTS="$(dirname "$(realpath "$0")")"
-WORKSPACE="$(realpath "$SCRIPTS"/..)"
-
-cd "$WORKSPACE"
-
-prettier --check --ignore-path <(echo examples; echo template) '**/*.md' '**/*.yml'
-
-if ! git diff --exit-code; then
-    echo "$0: aborting as repository is dirty" >&2
-    exit 1
-fi
-
-prettier --write 'examples/**/*.md' 'internal/template/**/*.md' &&
-    git diff --ignore-blank-lines | (! grep .) &&
-    git checkout examples internal/template
-
-scripts/unquote_yaml_strings.sh && git diff --exit-code
diff --git a/scripts/unquote_yaml_strings.sh b/scripts/unquote_yaml_strings.sh
deleted file mode 100755
index 3991f44fa..000000000
--- a/scripts/unquote_yaml_strings.sh
+++ /dev/null
@@ -1,16 +0,0 @@
-#! /bin/bash
-
-# set -x
-set -euo pipefail
-
-if [[ $# -ne 0 ]]; then
-    echo "$0: expect no arguments" >&2
-    exit 1
-fi
-
-SCRIPTS="$(dirname "$(realpath "$0")")"
-WORKSPACE="$(realpath "$SCRIPTS"/..)"
-
-cd "$WORKSPACE"
-
-find . -name '*.yml' -exec sed -i 's/^\([^#]*:[[:space:]]*\)"\(.*[^0-9:].*\)"\([[:space:]]*\)$/\1\2\3/' {} \;