Merge pull request #884 from jonathandturner/nu_path_var

Add support for $nu:path

src/commands/command.rs

@@ -589,17 +589,22 @@ impl Command {
             out.to_output_stream()
         } else {
             let nothing = Value::nothing().tagged(Tag::unknown());
+
             let call_info = raw_args
                 .clone()
                 .call_info
-                .evaluate(&registry, &Scope::it_value(nothing.clone()))
+                .evaluate(&registry, &Scope::it_value(nothing.clone()));
-                .unwrap();
 
-            match command
+            match call_info {
-                .run(&call_info, &registry, &raw_args, nothing)
+                Ok(call_info) => {
-                .into()
+                    match command
-            {
+                        .run(&call_info, &registry, &raw_args, nothing)
-                Ok(o) => o,
+                        .into()
+                    {
+                        Ok(o) => o,
+                        Err(e) => OutputStream::one(Err(e)),
+                    }
+                }
                 Err(e) => OutputStream::one(Err(e)),
             }
         }

src/evaluate/evaluator.rs

@@ -177,6 +177,18 @@ fn evaluate_reference(
                 let config = crate::data::config::read(tag.clone(), &None)?;
                 Ok(Value::row(config).tagged(tag))
             }
+            x if x == "nu:path" => {
+                let mut table = vec![];
+                match std::env::var_os("PATH") {
+                    Some(paths) => {
+                        for path in std::env::split_paths(&paths) {
+                            table.push(Value::path(path).tagged(&tag));
+                        }
+                    }
+                    _ => {}
+                }
+                Ok(Value::table(&table).tagged(tag))
+            }
             x => Ok(scope
                 .vars
                 .get(x)