diff --git a/src/uucore/src/lib/features/format/mod.rs b/src/uucore/src/lib/features/format/mod.rs
index 0849ada15..d6db5e8c7 100644
--- a/src/uucore/src/lib/features/format/mod.rs
+++ b/src/uucore/src/lib/features/format/mod.rs
@@ -11,7 +11,7 @@
 // spell-checker:ignore (vars) charf decf floatf intf scif strf Cninety
 
 mod spec;
-mod num_format;
+pub mod num_format;
 
 use spec::Spec;
 use std::{
diff --git a/src/uucore/src/lib/features/format/num_format.rs b/src/uucore/src/lib/features/format/num_format.rs
index 75c18438c..3a27ac200 100644
--- a/src/uucore/src/lib/features/format/num_format.rs
+++ b/src/uucore/src/lib/features/format/num_format.rs
@@ -1,17 +1,60 @@
 use std::io::Write;
 
-use super::{
-    spec::{
-        Case, FloatVariant, ForceDecimal, NumberAlignment, PositiveSign, Prefix, UnsignedIntVariant,
-    },
-    FormatError,
-};
+use super::FormatError;
 
 pub trait Formatter {
     type Input;
     fn fmt(&self, writer: impl Write, x: Self::Input) -> Result<(), FormatError>;
 }
 
+#[derive(Clone, Copy)]
+pub enum UnsignedIntVariant {
+    Decimal,
+    Octal(Prefix),
+    Hexadecimal(Case, Prefix),
+}
+
+#[derive(Clone, Copy)]
+
+pub enum FloatVariant {
+    Decimal,
+    Scientific,
+    Shortest,
+    Hexadecimal,
+}
+
+#[derive(Clone, Copy, PartialEq, Eq)]
+pub enum Case {
+    Lowercase,
+    Uppercase,
+}
+
+#[derive(Clone, Copy, PartialEq, Eq)]
+pub enum Prefix {
+    No,
+    Yes,
+}
+
+#[derive(Clone, Copy, PartialEq, Eq)]
+pub enum ForceDecimal {
+    No,
+    Yes,
+}
+
+#[derive(Clone, Copy)]
+pub enum PositiveSign {
+    None,
+    Plus,
+    Space,
+}
+
+#[derive(Clone, Copy)]
+pub enum NumberAlignment {
+    Left,
+    RightSpace,
+    RightZero,
+}
+
 pub struct SignedInt {
     pub width: usize,
     pub positive_sign: PositiveSign,
@@ -87,6 +130,20 @@ pub struct Float {
     pub precision: usize,
 }
 
+impl Default for Float {
+    fn default() -> Self {
+        Self {
+            variant: FloatVariant::Decimal,
+            case: Case::Lowercase,
+            force_decimal: ForceDecimal::No,
+            width: 0,
+            positive_sign: PositiveSign::None,
+            alignment: NumberAlignment::Left,
+            precision: 2,
+        }
+    }
+}
+
 impl Formatter for Float {
     type Input = f64;
 
diff --git a/src/uucore/src/lib/features/format/spec.rs b/src/uucore/src/lib/features/format/spec.rs
index 4a533d1e1..808969970 100644
--- a/src/uucore/src/lib/features/format/spec.rs
+++ b/src/uucore/src/lib/features/format/spec.rs
@@ -1,7 +1,10 @@
 // spell-checker:ignore (vars) charf decf floatf intf scif strf Cninety
 
 use super::{
-    num_format::{self, Formatter},
+    num_format::{
+        self, Case, FloatVariant, ForceDecimal, Formatter, NumberAlignment, PositiveSign, Prefix,
+        UnsignedIntVariant,
+    },
     FormatArgument, FormatError,
 };
 use std::{fmt::Display, io::Write};
@@ -36,54 +39,6 @@ pub enum Spec {
     },
 }
 
-#[derive(Clone, Copy)]
-pub enum UnsignedIntVariant {
-    Decimal,
-    Octal(Prefix),
-    Hexadecimal(Case, Prefix),
-}
-
-#[derive(Clone, Copy)]
-
-pub enum FloatVariant {
-    Decimal,
-    Scientific,
-    Shortest,
-    Hexadecimal,
-}
-
-#[derive(Clone, Copy, PartialEq, Eq)]
-pub enum Case {
-    Lowercase,
-    Uppercase,
-}
-
-#[derive(Clone, Copy, PartialEq, Eq)]
-pub enum Prefix {
-    No,
-    Yes,
-}
-
-#[derive(Clone, Copy, PartialEq, Eq)]
-pub enum ForceDecimal {
-    No,
-    Yes,
-}
-
-#[derive(Clone, Copy)]
-pub enum PositiveSign {
-    None,
-    Plus,
-    Space,
-}
-
-#[derive(Clone, Copy)]
-pub enum NumberAlignment {
-    Left,
-    RightSpace,
-    RightZero,
-}
-
 /// Precision and width specified might use an asterisk to indicate that they are
 /// determined by an argument.
 #[derive(Clone, Copy)]
@@ -295,7 +250,8 @@ impl Spec {
                     width,
                     positive_sign,
                     alignment,
-                }.fmt(writer, *i)
+                }
+                .fmt(writer, *i)
             }
             &Spec::UnsignedInt {
                 variant,