Remove interpretation of Primitive::Nothing as the number 0. (#1836)

crates/nu-cli/src/data/base.rs

@@ -153,13 +153,7 @@ fn coerce_compare_primitive(
         (Bytes(left), Decimal(right)) => {
             CompareValues::Decimals(BigDecimal::from(*left), right.clone())
         }
-        (Bytes(left), Nothing) => CompareValues::Ints(BigInt::from(*left), BigInt::from(0)),
-        (Nothing, Nothing) => CompareValues::Ints(BigInt::from(0), BigInt::from(0)),
-        (Nothing, Bytes(right)) => CompareValues::Ints(BigInt::from(0), BigInt::from(*right)),
-        (Int(left), Nothing) => CompareValues::Ints(left.clone(), BigInt::from(0)),
-        (Nothing, Int(right)) => CompareValues::Ints(BigInt::from(0), right.clone()),
-        (Decimal(left), Nothing) => CompareValues::Decimals(left.clone(), BigDecimal::from(0.0)),
-        (Nothing, Decimal(right)) => CompareValues::Decimals(BigDecimal::from(0.0), right.clone()),
+        (Nothing, Nothing) => CompareValues::Booleans(true, true),
         (String(left), String(right)) => CompareValues::String(left.clone(), right.clone()),
         (Line(left), String(right)) => CompareValues::String(left.clone(), right.clone()),
         (String(left), Line(right)) => CompareValues::String(left.clone(), right.clone()),

crates/nu-cli/src/data/types.rs

@@ -26,10 +26,6 @@ impl ExtractType for bool {
                 value: UntaggedValue::Primitive(Primitive::Boolean(b)),
                 ..
             } => Ok(*b),
-            Value {
-                value: UntaggedValue::Primitive(Primitive::Nothing),
-                ..
-            } => Ok(false),
             other => Err(ShellError::type_error("Boolean", other.spanned_type_name())),
         }
     }

crates/nu-cli/tests/commands/cal.rs

@@ -33,7 +33,7 @@ fn cal_friday_the_thirteenths_in_2015() {
     let actual = nu!(
         cwd: ".", pipeline(
         r#"
-        cal --full-year 2015 | where friday == 13 | count
+        cal --full-year 2015 | get friday | compact | where $it == 13 | count
         "#
     ));
 

crates/nu-cli/tests/commands/where_.rs

@@ -14,7 +14,7 @@ fn filters_by_unit_size_comparison() {
 fn filters_with_nothing_comparison() {
     let actual = nu!(
         cwd: "tests/fixtures/formats",
-        r#"echo '[{"foo": 3}, {"foo": null}, {"foo": 4}]' | from json | where foo > 1 | get foo | sum | echo $it"#
+        r#"echo '[{"foo": 3}, {"foo": null}, {"foo": 4}]' | from json | get foo | compact | where $it > 1 | sum | echo $it"#
     );
 
     assert_eq!(actual.out, "7");

crates/nu-protocol/src/value/primitive.rs

@@ -105,7 +105,6 @@ impl num_traits::Zero for Primitive {
             Primitive::Int(int) => int.is_zero(),
             Primitive::Decimal(decimal) => decimal.is_zero(),
             Primitive::Bytes(size) => size.is_zero(),
-            Primitive::Nothing => true,
             _ => false,
         }
     }

crates/nu-test-support/src/macros.rs

@@ -38,7 +38,7 @@ macro_rules! nu {
         });
 
         let mut paths = $crate::shell_os_paths();
-        paths.push(test_bins);
+        paths.insert(0, test_bins);
 
         let paths_joined = match std::env::join_paths(paths.iter()) {
             Ok(all) => all,

crates/nu_plugin_average/src/average.rs

@@ -17,7 +17,6 @@ impl Average {
 
     pub fn average(&mut self, value: Value) -> Result<(), ShellError> {
         match &value.value {
-            UntaggedValue::Primitive(Primitive::Nothing) => Ok(()),
             UntaggedValue::Primitive(Primitive::Int(i)) => match &self.total {
                 Some(Value {
                     value: UntaggedValue::Primitive(Primitive::Int(j)),

tests/shell/pipeline/commands/internal.rs

@@ -25,6 +25,7 @@ fn takes_rows_of_nu_value_strings_and_pipes_it_to_stdin_of_external() {
             | get name
             | ^echo $it
             | nu --testbin chop
+            | lines
             | nth 3
             | echo $it
             "#
@@ -89,8 +90,7 @@ fn invocation_handles_dot() {
         r#"
             echo $(open nu_times.csv)
             | get name
-            | ^echo $it
-            | nu --testbin chop
+            | nu --testbin chop $it
             | nth 3
             | echo $it
             "#