Help messages: edit various instances of "block" to "closure" (#7470)

crates/nu-command/src/core_commands/do_.rs

@@ -14,7 +14,7 @@ impl Command for Do {
     }
 
     fn usage(&self) -> &str {
-        "Run a block"
+        "Run a closure, providing it with the pipeline input"
     }
 
     fn signature(&self) -> Signature {
@@ -23,25 +23,25 @@ impl Command for Do {
             .input_output_types(vec![(Type::Any, Type::Any)])
             .switch(
                 "ignore-errors",
-                "ignore errors as the block runs",
+                "ignore errors as the closure runs",
                 Some('i'),
             )
             .switch(
                 "ignore-shell-errors",
-                "ignore shell errors as the block runs",
+                "ignore shell errors as the closure runs",
                 Some('s'),
             )
             .switch(
                 "ignore-program-errors",
-                "ignore program errors as the block runs",
+                "ignore external program errors as the closure runs",
                 Some('p'),
             )
             .switch(
                 "capture-errors",
-                "capture errors as the block runs and return it",
+                "catch errors as the closure runs, and return them",
                 Some('c'),
             )
-            .rest("rest", SyntaxShape::Any, "the parameter(s) for the block")
+            .rest("rest", SyntaxShape::Any, "the parameter(s) for the closure")
             .category(Category::Core)
     }
 
@@ -179,22 +179,22 @@ impl Command for Do {
     fn examples(&self) -> Vec<Example> {
         vec![
             Example {
-                description: "Run the block",
+                description: "Run the closure",
                 example: r#"do { echo hello }"#,
                 result: Some(Value::test_string("hello")),
             },
             Example {
-                description: "Run the block and ignore both shell and program errors",
+                description: "Run the closure and ignore both shell and external program errors",
                 example: r#"do -i { thisisnotarealcommand }"#,
                 result: None,
             },
             Example {
-                description: "Run the block and ignore shell errors",
+                description: "Run the closure and ignore shell errors",
                 example: r#"do -s { thisisnotarealcommand }"#,
                 result: None,
             },
             Example {
-                description: "Run the block and ignore program errors",
+                description: "Run the closure and ignore external program errors",
                 example: r#"do -p { nu -c 'exit 1' }; echo "I'll still run""#,
                 result: None,
             },
@@ -204,12 +204,12 @@ impl Command for Do {
                 result: None,
             },
             Example {
-                description: "Run the block, with a positional parameter",
+                description: "Run the closure, with a positional parameter",
                 example: r#"do {|x| 100 + $x } 77"#,
                 result: Some(Value::test_int(177)),
             },
             Example {
-                description: "Run the block, with input",
+                description: "Run the closure, with input",
                 example: r#"77 | do {|x| 100 + $in }"#,
                 result: None, // TODO: returns 177
             },

crates/nu-command/src/filters/each.rs

@@ -47,7 +47,7 @@ with 'transpose' first."#
             .switch("keep-empty", "keep empty result cells", Some('k'))
             .switch(
                 "numbered",
-                "iterate with an index (deprecated; use a two-parameter block instead)",
+                "iterate with an index (deprecated; use a two-parameter closure instead)",
                 Some('n'),
             )
             .category(Category::Filters)

crates/nu-command/src/filters/each_while.rs

@@ -35,7 +35,7 @@ impl Command for EachWhile {
             )
             .switch(
                 "numbered",
-                "iterate with an index (deprecated; use a two-parameter block instead)",
+                "iterate with an index (deprecated; use a two-parameter closure instead)",
                 Some('n'),
             )
             .category(Category::Filters)

crates/nu-command/src/filters/insert.rs

@@ -38,7 +38,7 @@ impl Command for Insert {
     }
 
     fn usage(&self) -> &str {
-        "Insert a new column, using an expression or block to create each row's values."
+        "Insert a new column, using an expression or closure to create each row's values."
     }
 
     fn search_terms(&self) -> Vec<&str> {

crates/nu-command/src/filters/par_each.rs

@@ -34,7 +34,7 @@ impl Command for ParEach {
             )
             .switch(
                 "numbered",
-                "iterate with an index (deprecated; use a two-parameter block instead)",
+                "iterate with an index (deprecated; use a two-parameter closure instead)",
                 Some('n'),
             )
             .category(Category::Filters)

crates/nu-command/src/filters/reduce.rs

@@ -36,13 +36,13 @@ impl Command for Reduce {
             )
             .switch(
                 "numbered",
-                "iterate with an index (deprecated; use a 3-parameter block instead)",
+                "iterate with an index (deprecated; use a 3-parameter closure instead)",
                 Some('n'),
             )
     }
 
     fn usage(&self) -> &str {
-        "Aggregate a list to a single value using an accumulator block."
+        "Aggregate a list to a single value using an accumulator closure."
     }
 
     fn search_terms(&self) -> Vec<&str> {

crates/nu-command/src/filters/update.rs

@@ -25,7 +25,7 @@ impl Command for Update {
             .required(
                 "replacement value",
                 SyntaxShape::Any,
-                "the new value to give the cell(s), or a block to create the value",
+                "the new value to give the cell(s), or a closure to create the value",
             )
             .category(Category::Filters)
     }
@@ -56,7 +56,7 @@ impl Command for Update {
                 }),
             },
             Example {
-                description: "Use in block form for more involved updating logic",
+                description: "Use in closure form for more involved updating logic",
                 example: "[[count fruit]; [1 'apple']] | update count {|row index| ($row.fruit | str length) + $index }",
                 result: Some(Value::List {
                     vals: vec![Value::Record {

crates/nu-command/src/filters/upsert.rs

@@ -25,7 +25,7 @@ impl Command for Upsert {
             .required(
                 "replacement value",
                 SyntaxShape::Any,
-                "the new value to give the cell(s), or a block to create the value",
+                "the new value to give the cell(s), or a closure to create the value",
             )
             .category(Category::Filters)
     }