clippy: Allow single-character names where necessary

src/hashtocurve.rs

@@ -99,6 +99,7 @@ pub fn iso_map<F: FieldExt, C: CurveExt<Base = F>, I: CurveExt<Base = F>>(
     C::new_jacobian(xo, yo, zo).unwrap()
 }
 
+#[allow(clippy::many_single_char_names)]
 pub fn map_to_curve_simple_swu<F: FieldExt, C: CurveExt<Base = F>, I: CurveExt<Base = F>>(
     u: &F,
     theta: F,

src/lib.rs

@@ -6,7 +6,6 @@
     clippy::op_ref,
     clippy::too_many_arguments,
     clippy::suspicious_arithmetic_impl,
-    clippy::many_single_char_names,
     clippy::same_item_push,
     clippy::upper_case_acronyms,
     clippy::unknown_clippy_lints

src/pallas.rs

@@ -15,6 +15,7 @@ pub type Point = Ep;
 pub type Affine = EpAffine;
 
 #[test]
+#[allow(clippy::many_single_char_names)]
 fn test_iso_map() {
     use crate::arithmetic::CurveExt;
     use group::Group;