remote: Fix terminal crash on Elvish shell (#41893)

crates/languages/src/python.rs

@@ -1217,6 +1217,7 @@ impl ToolchainLister for PythonToolchainProvider {
                     ShellKind::Cmd => None,
                     ShellKind::Rc => None,
                     ShellKind::Xonsh => None,
+                    ShellKind::Elvish => None,
                 })
             }
             _ => {}

crates/util/src/shell.rs

@@ -60,6 +60,7 @@ pub enum ShellKind {
     Nushell,
     Cmd,
     Xonsh,
+    Elvish,
 }
 
 pub fn get_system_shell() -> String {
@@ -216,6 +217,7 @@ impl fmt::Display for ShellKind {
             ShellKind::Cmd => write!(f, "cmd"),
             ShellKind::Rc => write!(f, "rc"),
             ShellKind::Xonsh => write!(f, "xonsh"),
+            ShellKind::Elvish => write!(f, "elvish"),
         }
     }
 }
@@ -241,6 +243,7 @@ impl ShellKind {
             "tcsh" => ShellKind::Tcsh,
             "rc" => ShellKind::Rc,
             "xonsh" => ShellKind::Xonsh,
+            "elvish" => ShellKind::Elvish,
             "sh" | "bash" | "zsh" => ShellKind::Posix,
             _ if is_windows => ShellKind::PowerShell,
             // Some other shell detected, the user might install and use a
@@ -260,6 +263,7 @@ impl ShellKind {
             Self::Rc => input.to_owned(),
             Self::Nushell => Self::to_nushell_variable(input),
             Self::Xonsh => input.to_owned(),
+            Self::Elvish => input.to_owned(),
         }
     }
 
@@ -386,7 +390,8 @@ impl ShellKind {
             | ShellKind::Csh
             | ShellKind::Tcsh
             | ShellKind::Rc
-            | ShellKind::Xonsh => interactive
+            | ShellKind::Xonsh
+            | ShellKind::Elvish => interactive
                 .then(|| "-i".to_owned())
                 .into_iter()
                 .chain(["-c".to_owned(), combined_command])
@@ -404,7 +409,8 @@ impl ShellKind {
             | ShellKind::Rc
             | ShellKind::Fish
             | ShellKind::Cmd
-            | ShellKind::Xonsh => None,
+            | ShellKind::Xonsh
+            | ShellKind::Elvish => None,
         }
     }
 
@@ -427,7 +433,8 @@ impl ShellKind {
             | ShellKind::Fish
             | ShellKind::PowerShell
             | ShellKind::Nushell
-            | ShellKind::Xonsh => ';',
+            | ShellKind::Xonsh
+            | ShellKind::Elvish => ';',
         }
     }
 
@@ -441,7 +448,7 @@ impl ShellKind {
             | ShellKind::Fish
             | ShellKind::PowerShell
             | ShellKind::Xonsh => "&&",
-            ShellKind::Nushell => ";",
+            ShellKind::Nushell | ShellKind::Elvish => ";",
         }
     }
 
@@ -457,7 +464,8 @@ impl ShellKind {
             | ShellKind::Rc
             | ShellKind::Fish
             | ShellKind::Nushell
-            | ShellKind::Xonsh => arg,
+            | ShellKind::Xonsh
+            | ShellKind::Elvish => arg,
         })
     }
 
@@ -511,7 +519,8 @@ impl ShellKind {
             | ShellKind::Tcsh
             | ShellKind::Posix
             | ShellKind::Rc
-            | ShellKind::Xonsh => "source",
+            | ShellKind::Xonsh
+            | ShellKind::Elvish => "source",
         }
     }
 
@@ -525,7 +534,8 @@ impl ShellKind {
             | ShellKind::Fish
             | ShellKind::PowerShell
             | ShellKind::Nushell
-            | ShellKind::Xonsh => "clear",
+            | ShellKind::Xonsh
+            | ShellKind::Elvish => "clear",
         }
     }
 
@@ -542,7 +552,8 @@ impl ShellKind {
             | ShellKind::Fish
             | ShellKind::PowerShell
             | ShellKind::Nushell
-            | ShellKind::Xonsh => true,
+            | ShellKind::Xonsh
+            | ShellKind::Elvish => true,
         }
     }
 }

crates/util/src/shell_builder.rs

@@ -54,7 +54,8 @@ impl ShellBuilder {
                 | ShellKind::Csh
                 | ShellKind::Tcsh
                 | ShellKind::Rc
-                | ShellKind::Xonsh => {
+                | ShellKind::Xonsh
+                | ShellKind::Elvish => {
                     let interactivity = self.interactive.then_some("-i ").unwrap_or_default();
                     format!(
                         "{PROGRAM} {interactivity}-c '{command_to_use_in_label}'",
@@ -93,7 +94,8 @@ impl ShellBuilder {
                     | ShellKind::Csh
                     | ShellKind::Tcsh
                     | ShellKind::Rc
-                    | ShellKind::Xonsh => {
+                    | ShellKind::Xonsh
+                    | ShellKind::Elvish => {
                         combined_command.insert(0, '(');
                         combined_command.push_str(") </dev/null");
                     }

crates/util/src/shell_env.rs

@@ -172,6 +172,31 @@ async fn capture_windows(
             );
             output
         }
+        ShellKind::Elvish => {
+            let output = crate::command::new_smol_command(shell_path)
+                .args([
+                    "-c",
+                    &format!(
+                        "cd '{}'; {} --printenv",
+                        directory.display(),
+                        zed_path.display()
+                    ),
+                ])
+                .stdin(Stdio::null())
+                .stdout(Stdio::piped())
+                .stderr(Stdio::piped())
+                .output()
+                .await?;
+
+            anyhow::ensure!(
+                output.status.success(),
+                "Elvish command failed with {}. stdout: {:?}, stderr: {:?}",
+                output.status,
+                String::from_utf8_lossy(&output.stdout),
+                String::from_utf8_lossy(&output.stderr),
+            );
+            output
+        }
         ShellKind::Nushell => {
             let output = crate::command::new_smol_command(shell_path)
                 .args([