Define rule codes RUF103/104 for invalid/unmatched suppression comments

crates/ruff_linter/src/codes.rs

@@ -1063,6 +1063,8 @@ pub fn code_to_rule(linter: Linter, code: &str) -> Option<(RuleGroup, Rule)> {
         (Ruff, "100") => rules::ruff::rules::UnusedNOQA,
         (Ruff, "101") => rules::ruff::rules::RedirectedNOQA,
         (Ruff, "102") => rules::ruff::rules::InvalidRuleCode,
+        (Ruff, "103") => rules::ruff::rules::InvalidSuppressionComment,
+        (Ruff, "104") => rules::ruff::rules::UnmatchedSuppressionComment,
 
         (Ruff, "200") => rules::ruff::rules::InvalidPyprojectToml,
         #[cfg(any(feature = "test-rules", test))]

crates/ruff_linter/src/rules/ruff/rules/invalid_suppression_comment.rs

@@ -0,0 +1,39 @@
+use ruff_macros::{ViolationMetadata, derive_message_formats};
+
+use crate::AlwaysFixableViolation;
+
+/// ## What it does
+/// Checks for invalid suppression comments
+///
+/// ## Why is this bad?
+/// Invalid suppression comments are ignored by Ruff, and should either
+/// be fixed or removed to avoid confusion.
+///
+/// ## Example
+/// ```python
+/// ruff: disable  # missing codes
+/// ```
+///
+/// Use instead:
+/// ```python
+/// # ruff: disable[E501]
+/// ```
+///
+/// Or delete the invalid suppression comment.
+///
+/// ## References
+/// - [Ruff error suppression](https://docs.astral.sh/ruff/linter/#error-suppression)
+#[derive(ViolationMetadata)]
+#[violation_metadata(preview_since = "0.14.9")]
+pub(crate) struct InvalidSuppressionComment;
+
+impl AlwaysFixableViolation for InvalidSuppressionComment {
+    #[derive_message_formats]
+    fn message(&self) -> String {
+        "Invalid suppression comment".to_string()
+    }
+
+    fn fix_title(&self) -> String {
+        "Remove invalid suppression comment".to_string()
+    }
+}

crates/ruff_linter/src/rules/ruff/rules/mod.rs

@@ -22,6 +22,7 @@ pub(crate) use invalid_formatter_suppression_comment::*;
 pub(crate) use invalid_index_type::*;
 pub(crate) use invalid_pyproject_toml::*;
 pub(crate) use invalid_rule_code::*;
+pub(crate) use invalid_suppression_comment::*;
 pub(crate) use legacy_form_pytest_raises::*;
 pub(crate) use logging_eager_conversion::*;
 pub(crate) use map_int_version_parsing::*;
@@ -46,6 +47,7 @@ pub(crate) use starmap_zip::*;
 pub(crate) use static_key_dict_comprehension::*;
 #[cfg(any(feature = "test-rules", test))]
 pub(crate) use test_rules::*;
+pub(crate) use unmatched_suppression_comment::*;
 pub(crate) use unnecessary_cast_to_int::*;
 pub(crate) use unnecessary_iterable_allocation_for_first_element::*;
 pub(crate) use unnecessary_key_check::*;
@@ -87,6 +89,7 @@ mod invalid_formatter_suppression_comment;
 mod invalid_index_type;
 mod invalid_pyproject_toml;
 mod invalid_rule_code;
+mod invalid_suppression_comment;
 mod legacy_form_pytest_raises;
 mod logging_eager_conversion;
 mod map_int_version_parsing;
@@ -113,6 +116,7 @@ mod static_key_dict_comprehension;
 mod suppression_comment_visitor;
 #[cfg(any(feature = "test-rules", test))]
 pub(crate) mod test_rules;
+mod unmatched_suppression_comment;
 mod unnecessary_cast_to_int;
 mod unnecessary_iterable_allocation_for_first_element;
 mod unnecessary_key_check;

crates/ruff_linter/src/rules/ruff/rules/unmatched_suppression_comment.rs

@@ -0,0 +1,38 @@
+use ruff_macros::{ViolationMetadata, derive_message_formats};
+
+use crate::Violation;
+
+/// ## What it does
+/// Checks for unmatched range suppression comments
+///
+/// ## Why is this bad?
+/// Unmatched range suppression comments can inadvertently suppress violations
+/// over larger sections of code than intended, particularly at module scope.
+///
+/// ## Example
+/// ```python
+/// def foo():
+///     ruff: disable[E501]  # unmatched
+///     ...
+/// ```
+///
+/// Use instead:
+/// ```python
+/// def foo():
+///     # ruff: disable[E501]
+///     ...
+///     # ruff: enable[E501]
+/// ```
+///
+/// ## References
+/// - [Ruff error suppression](https://docs.astral.sh/ruff/linter/#error-suppression)
+#[derive(ViolationMetadata)]
+#[violation_metadata(preview_since = "0.14.9")]
+pub(crate) struct UnmatchedSuppressionComment;
+
+impl Violation for UnmatchedSuppressionComment {
+    #[derive_message_formats]
+    fn message(&self) -> String {
+        "Unmatched suppression comment".to_string()
+    }
+}

ruff.schema.json

@@ -4050,6 +4050,8 @@
         "RUF100",
         "RUF101",
         "RUF102",
+        "RUF103",
+        "RUF104",
         "RUF2",
         "RUF20",
         "RUF200",