editor: noctalia backend (noctalia msg annotate)

src/config.rs

@@ -68,6 +68,9 @@ pub enum Backend {
     #[default]
     Builtin,
     Satty,
+    /// Noctalia's annotator: it saves a new "annotated" file instead of
+    /// overwriting the shot.
+    Noctalia,
 }
 
 #[derive(Debug, Clone, PartialEq, Deserialize)]
@@ -285,6 +288,8 @@ mod tests {
         assert_eq!(Config::default().editor.backend, Backend::Builtin);
         let (config, _) = parse("[editor]\nbackend = \"satty\"\n").unwrap();
         assert_eq!(config.editor.backend, Backend::Satty);
+        let (config, _) = parse("[editor]\nbackend = \"noctalia\"\n").unwrap();
+        assert_eq!(config.editor.backend, Backend::Noctalia);
         assert!(parse("[editor]\nbackend = \"gimp\"\n").is_err());
     }
 

src/host.rs

@@ -501,8 +501,9 @@ fn add(state: &mut State, path: &Path, output_name: &str) -> Result<()> {
     Ok(())
 }
 
-/// The command that opens `path` in the configured editor; both save over
-/// the file.
+/// The command that opens `path` in the configured editor. The built-in
+/// editor and Satty save over the file; Noctalia's annotator saves a new
+/// one next to it (or copies), leaving the shot as it was.
 fn editor_command(backend: Backend, path: &Path, exe: &Path) -> std::process::Command {
     let mut command = match backend {
         Backend::Builtin => {
@@ -518,6 +519,11 @@ fn editor_command(backend: Backend, path: &Path, exe: &Path) -> std::process::Co
                 .arg(path);
             c
         }
+        Backend::Noctalia => {
+            let mut c = std::process::Command::new("noctalia");
+            c.args(["msg", "annotate"]).arg(path);
+            c
+        }
     };
     command
         .stdin(std::process::Stdio::null())
@@ -573,6 +579,12 @@ mod tests {
                 "/p/Shot 1.png"
             ]
         );
+        let noctalia = editor_command(Backend::Noctalia, path, exe);
+        assert_eq!(noctalia.get_program(), "noctalia");
+        assert_eq!(
+            noctalia.get_args().collect::<Vec<_>>(),
+            ["msg", "annotate", "/p/Shot 1.png"]
+        );
     }
 
     #[test]