Support "Copy Path" operation in WSL (#2413)

Author: johnDeSilencio

CHANGELOG.md

@@ -15,6 +15,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 * Set `CREATE_NO_WINDOW` flag when executing Git hooks on Windows ([#2371](https://github.com/extrawurst/gitui/pull/2371))
 
 ### Added
+* support for "Copy Path" action in WSL [[@johnDeSilencio](https://github.com/johnDeSilencio)] ([#2413](https://github.com/extrawurst/gitui/pull/2413))
 * help popup scrollbar [[@wugeer](https://github.com/wugeer)](https://github.com/extrawurst/gitui/pull/2388))
 * add popups for viewing, adding, updating and removing remotes [[@robin-thoene](https://github.com/robin-thoene)] ([#2172](https://github.com/extrawurst/gitui/issues/2172))
 

src/clipboard.rs

@@ -49,12 +49,30 @@ fn exec_copy_with_args(
 	}
 }
 
+// Implementation taken from https://crates.io/crates/wsl.
+// Using /proc/sys/kernel/osrelease as an authoratative source
+// based on this comment: https://github.com/microsoft/WSL/issues/423#issuecomment-221627364
+#[cfg(all(target_family = "unix", not(target_os = "macos")))]
+fn is_wsl() -> bool {
+	if let Ok(b) = std::fs::read("/proc/sys/kernel/osrelease") {
+		if let Ok(s) = std::str::from_utf8(&b) {
+			let a = s.to_ascii_lowercase();
+			return a.contains("microsoft") || a.contains("wsl");
+		}
+	}
+	false
+}
+
 #[cfg(all(target_family = "unix", not(target_os = "macos")))]
 pub fn copy_string(text: &str) -> Result<()> {
 	if std::env::var("WAYLAND_DISPLAY").is_ok() {
 		return exec_copy_with_args("wl-copy", &[], text, false);
 	}
 
+	if is_wsl() {
+		return exec_copy_with_args("clip.exe", &[], text, false);
+	}
+
 	if exec_copy_with_args(
 		"xclip",
 		&["-selection", "clipboard"],