fix(linux): honor inherited default file associations

CHANGELOG.md

@@ -8,6 +8,9 @@ separately in [CHANGELOG-DEPS.md](CHANGELOG-DEPS.md).
 
 ## Unreleased
 
+- **Linux opens JSON and other text files in their associated application.**
+  File opening and text editing honor the desktop's inherited associations.
+
 - **Going up to a parent folder selects the folder you came from and scrolls
   it into view, whichever way you go up.** Backspace and Back already did
   this; clicking a breadcrumb segment, a folder in the sidebar tree, or typing

crates/ferail-shell-linux/src/lib.rs

@@ -146,7 +146,13 @@ pub fn open_url(_url: &str) {}
 /// Ferail's stdio and reaped when the launcher exits.
 #[cfg(target_os = "linux")]
 pub fn open_with_default(path: &Path) -> std::io::Result<()> {
-    spawn_detached(std::process::Command::new("xdg-open").arg(path))
+    let path = std::path::absolute(path)?;
+    match spawn_detached(std::process::Command::new("gio").arg("open").arg(&path)) {
+        Err(error) if error.kind() == std::io::ErrorKind::NotFound => {
+            spawn_detached(std::process::Command::new("xdg-open").arg(&path))
+        }
+        result => result,
+    }
 }
 
 #[cfg(not(target_os = "linux"))]
@@ -159,7 +165,7 @@ pub fn open_with_default(_path: &Path) -> std::io::Result<()> {
 /// portable equivalent of TextEdit/Notepad.
 #[cfg(target_os = "linux")]
 pub fn edit_text_file(path: &Path) -> std::io::Result<()> {
-    spawn_detached(std::process::Command::new("xdg-open").arg(path))
+    open_with_default(path)
 }
 
 #[cfg(not(target_os = "linux"))]