Remove build-string command (#7144)

crates/nu-command/src/default_context.rs

@@ -184,7 +184,6 @@ pub fn create_default_context() -> EngineState {
 
         // Strings
         bind_command! {
-            BuildString,
             Char,
             Decode,
             Encode,

crates/nu-command/src/example_test.rs

@@ -9,8 +9,8 @@ pub fn test_examples(cmd: impl Command + 'static) {
 #[cfg(test)]
 mod test_examples {
     use super::super::{
-        Ansi, BuildString, Date, Echo, From, If, Into, LetEnv, Math, Path, Random, Split,
-        SplitColumn, SplitRow, Str, StrJoin, StrLength, StrReplace, Url, Wrap,
+        Ansi, Date, Echo, From, If, Into, LetEnv, Math, Path, Random, Split, SplitColumn, SplitRow,
+        Str, StrJoin, StrLength, StrReplace, Url, Wrap,
     };
     use crate::To;
     use itertools::Itertools;
@@ -64,7 +64,6 @@ mod test_examples {
             working_set.add_decl(Box::new(StrJoin));
             working_set.add_decl(Box::new(StrLength));
             working_set.add_decl(Box::new(StrReplace));
-            working_set.add_decl(Box::new(BuildString));
             working_set.add_decl(Box::new(From));
             working_set.add_decl(Box::new(If));
             working_set.add_decl(Box::new(To));

crates/nu-command/src/strings/build_string.rs

@@ -1,86 +0,0 @@
-use nu_engine::eval_expression;
-use nu_protocol::ast::Call;
-use nu_protocol::engine::{Command, EngineState, Stack};
-use nu_protocol::{
-    Category, Example, IntoPipelineData, PipelineData, ShellError, Signature, Span, SyntaxShape,
-    Type, Value,
-};
-
-#[derive(Clone)]
-pub struct BuildString;
-
-impl Command for BuildString {
-    fn name(&self) -> &str {
-        "build-string"
-    }
-
-    fn usage(&self) -> &str {
-        "Create a string from the arguments."
-    }
-
-    fn search_terms(&self) -> Vec<&str> {
-        vec!["concatenate", "join"]
-    }
-
-    fn signature(&self) -> nu_protocol::Signature {
-        Signature::build("build-string")
-            .rest("rest", SyntaxShape::String, "list of string")
-            .input_output_types(vec![(Type::Nothing, Type::String)])
-            .category(Category::Strings)
-    }
-
-    fn examples(&self) -> Vec<Example> {
-        vec![
-            Example {
-                example: "build-string a b c",
-                description: "Builds a string from letters a b c",
-                result: Some(Value::String {
-                    val: "abc".to_string(),
-                    span: Span::test_data(),
-                }),
-            },
-            Example {
-                example: r#"build-string $"(1 + 2)" = one ' ' plus ' ' two"#,
-                description: "Builds a string from subexpression separating words with spaces",
-                result: Some(Value::String {
-                    val: "3=one plus two".to_string(),
-                    span: Span::test_data(),
-                }),
-            },
-        ]
-    }
-
-    fn run(
-        &self,
-        engine_state: &EngineState,
-        stack: &mut Stack,
-        call: &Call,
-        _input: PipelineData,
-    ) -> Result<nu_protocol::PipelineData, nu_protocol::ShellError> {
-        let config = engine_state.get_config();
-        let output = call
-            .positional_iter()
-            .map(|expr| {
-                eval_expression(engine_state, stack, expr).map(|val| val.into_string(", ", config))
-            })
-            .collect::<Result<Vec<String>, ShellError>>()?;
-
-        Ok(Value::String {
-            val: output.join(""),
-            span: call.head,
-        }
-        .into_pipeline_data())
-    }
-}
-
-#[cfg(test)]
-mod test {
-    use super::*;
-
-    #[test]
-    fn test_examples() {
-        use crate::test_examples;
-
-        test_examples(BuildString {})
-    }
-}

crates/nu-command/src/strings/mod.rs

@@ -1,4 +1,3 @@
-mod build_string;
 mod char_;
 mod detect_columns;
 mod encode_decode;
@@ -8,7 +7,6 @@ mod size;
 mod split;
 mod str_;
 
-pub use build_string::BuildString;
 pub use char_::Char;
 pub use detect_columns::*;
 pub use encode_decode::*;

src/tests/test_strings.rs

@@ -1,39 +1,5 @@
 use crate::tests::{fail_test, run_test, TestResult};
 
-#[test]
-fn build_string1() -> TestResult {
-    run_test("build-string 'nu' 'shell'", "nushell")
-}
-
-#[test]
-fn build_string2() -> TestResult {
-    run_test("'nu' | each { |it| build-string $it 'shell'}", "nushell")
-}
-
-#[test]
-fn build_string3() -> TestResult {
-    run_test(
-        "build-string 'nu' 'shell' | each { |it| build-string $it ' rocks'}",
-        "nushell rocks",
-    )
-}
-
-#[test]
-fn build_string4() -> TestResult {
-    run_test(
-        "['sam','rick','pete'] | each { |it| build-string $it ' is studying'} | get 2",
-        "pete is studying",
-    )
-}
-
-#[test]
-fn build_string5() -> TestResult {
-    run_test(
-        "['sam','rick','pete'] | each { |x| build-string $x ' is studying'} | get 1",
-        "rick is studying",
-    )
-}
-
 #[test]
 fn cjk_in_substrings() -> TestResult {
     run_test(