Replace #[allow attributes with expect (#7796)

We do have `clippy::allow_attributes` turned on, but it doesn't seem to
work properly

crates/epaint/src/lib.rs

@@ -20,8 +20,8 @@
 #![cfg_attr(feature = "document-features", doc = document_features::document_features!())]
 //!
 
-#![allow(clippy::float_cmp)]
-#![allow(clippy::manual_range_contains)]
+#![expect(clippy::float_cmp)]
+#![expect(clippy::manual_range_contains)]
 
 mod brush;
 pub mod color;

crates/epaint/src/margin.rs

@@ -186,7 +186,7 @@ impl std::ops::Div<f32> for Margin {
 
     #[inline]
     fn div(self, v: f32) -> Self {
-        #![allow(clippy::suspicious_arithmetic_impl)]
+        #![expect(clippy::suspicious_arithmetic_impl)]
         self * v.recip()
     }
 }

crates/epaint/src/mesh.rs

@@ -189,7 +189,7 @@ impl Mesh {
     /// Rectangle with a texture and color.
     #[inline(always)]
     pub fn add_rect_with_uv(&mut self, rect: Rect, uv: Rect, color: Color32) {
-        #![allow(clippy::identity_op)]
+        #![expect(clippy::identity_op)]
         let idx = self.vertices.len() as u32;
         self.indices
             .extend_from_slice(&[idx + 0, idx + 1, idx + 2, idx + 2, idx + 1, idx + 3]);

crates/epaint/src/mutex.rs

@@ -125,7 +125,7 @@ where
 
 #[cfg(test)]
 mod tests {
-    #![allow(clippy::disallowed_methods)] // Ok for tests
+    #![expect(clippy::disallowed_methods)] // Ok for tests
 
     use crate::mutex::Mutex;
     use std::time::Duration;
@@ -158,7 +158,7 @@ mod tests {
 #[cfg(not(target_arch = "wasm32"))]
 #[cfg(test)]
 mod tests_rwlock {
-    #![allow(clippy::disallowed_methods)] // Ok for tests
+    #![expect(clippy::disallowed_methods)] // Ok for tests
 
     use crate::mutex::RwLock;
     use std::time::Duration;

crates/epaint/src/shape_transform.rs

@@ -10,7 +10,7 @@ pub fn adjust_colors(
     shape: &mut Shape,
     adjust_color: impl Fn(&mut Color32) + Send + Sync + Copy + 'static,
 ) {
-    #![allow(clippy::match_same_arms)]
+    #![expect(clippy::match_same_arms)]
     match shape {
         Shape::Noop => {}
 

crates/epaint/src/shapes/bezier_shape.rs

@@ -1,5 +1,4 @@
-#![allow(clippy::many_single_char_names)]
-#![allow(clippy::wrong_self_convention)] // False positives
+#![expect(clippy::many_single_char_names)]
 
 use std::ops::Range;
 

crates/epaint/src/stroke.rs

@@ -1,5 +1,3 @@
-#![allow(clippy::derived_hash_with_manual_eq)] // We need to impl Hash for f32, but we don't implement Eq, which is fine
-
 use std::{fmt::Debug, sync::Arc};
 
 use emath::GuiRounding as _;

crates/epaint/src/tessellator.rs

@@ -3,7 +3,7 @@
 //! This module converts lines, circles, text and more represented by [`Shape`]
 //! into textured triangles represented by [`Mesh`].
 
-#![allow(clippy::identity_op)]
+#![expect(clippy::identity_op)]
 
 use emath::{GuiRounding as _, NumExt as _, Pos2, Rect, Rot2, Vec2, pos2, remap, vec2};
 
@@ -2207,7 +2207,7 @@ impl Tessellator {
     ///
     /// ## Returns
     /// A list of clip rectangles with matching [`Mesh`].
-    #[allow(unused_mut, clippy::allow_attributes)]
+    #[allow(clippy::allow_attributes, unused_mut)]
     pub fn tessellate_shapes(&mut self, mut shapes: Vec<ClippedShape>) -> Vec<ClippedPrimitive> {
         profiling::function_scope!();
 

crates/epaint/src/text/font.rs

@@ -1,4 +1,4 @@
-#![allow(clippy::mem_forget)]
+#![expect(clippy::mem_forget)]
 
 use emath::{GuiRounding as _, OrderedFloat, Vec2, vec2};
 use self_cell::self_cell;

crates/epaint/src/text/text_layout_types.rs

@@ -1,6 +1,3 @@
-#![allow(clippy::derived_hash_with_manual_eq)] // We need to impl Hash for f32, but we don't implement Eq, which is fine
-#![allow(clippy::wrong_self_convention)] // We use `from_` to indicate conversion direction. It's non-diomatic, but makes sense in this context.
-
 use std::ops::Range;
 use std::sync::Arc;