Revert command name in error type to &'static str

CHANGELOG.md

@@ -13,8 +13,6 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 ### Changed
 - On Linux (non-WSL), the system `xdg-open` is now used if present. Otherwise, the bundled version is used, as before.
 - Avoid blocking the thread on Linux and WSL.
-- The command name in the `OpenError::ExitStatus` variant is now returned as a `Cow<'static, str>` instead of a
-`&'static str`.
 ### Removed
 - `impl From<io::Error> for OpenError`.
 

opener/src/lib.rs

@@ -40,7 +40,6 @@ use crate::macos as sys;
 #[cfg(target_os = "windows")]
 use crate::windows as sys;
 
-use std::borrow::Cow;
 use std::error::Error;
 use std::ffi::{OsStr, OsString};
 use std::fmt::{self, Display, Formatter};
@@ -120,7 +119,7 @@ pub enum OpenError {
     /// A command exited with a non-zero exit status.
     ExitStatus {
         /// A string that identifies the command.
-        cmd: Cow<'static, str>,
+        cmd: &'static str,
 
         /// The failed process's exit status.
         status: ExitStatus,
@@ -204,10 +203,7 @@ fn wsl_to_windows_path(_path: &OsStr) -> Option<OsString> {
 }
 
 #[cfg(not(target_os = "windows"))]
-fn wait_child(
-    child: &mut std::process::Child,
-    cmd_name: Cow<'static, str>,
-) -> Result<(), OpenError> {
+fn wait_child(child: &mut std::process::Child, cmd_name: &'static str) -> Result<(), OpenError> {
     use std::io::Read;
 
     let exit_status = child.wait().map_err(OpenError::Io)?;

opener/src/linux_and_more.rs

@@ -17,7 +17,7 @@ pub(crate) fn open(path: &OsStr) -> Result<(), OpenError> {
 fn wsl_open(path: &OsStr) -> Result<(), OpenError> {
     let result = open_with_wslview(path);
     if let Ok(mut child) = result {
-        return crate::wait_child(&mut child, "wslview".into());
+        return crate::wait_child(&mut child, "wslview");
     }
 
     open_with_system_xdg_open(path).map_err(OpenError::Io)?;

opener/src/macos.rs

@@ -11,5 +11,5 @@ pub(crate) fn open(path: &OsStr) -> Result<(), OpenError> {
         .spawn()
         .map_err(OpenError::Io)?;
 
-    crate::wait_child(&mut open, "open".into())
+    crate::wait_child(&mut open, "open")
 }