feat(config): add options for alternative xdotool backend

espanso-config/src/config/mod.rs

@@ -166,6 +166,10 @@ pub trait Config: Send + Sync {
   // the built-in native module on X11.
   fn x11_use_xclip_backend(&self) -> bool;
 
+  // If true, use an alternative injection backend based on the `xdotool` library.
+  // This might improve the situation for certain locales/layouts on X11.
+  fn x11_use_xdotool_backend(&self) -> bool;
+
   // If true, filter out keyboard events without an explicit HID device source on Windows.
   // This is needed to filter out the software-generated events, including
   // those from espanso, but might need to be disabled when using some software-level keyboards.
@@ -212,6 +216,7 @@ pub trait Config: Send + Sync {
         secure_input_notification: {:?}
 
         x11_use_xclip_backend: {:?}
+        x11_use_xdotool_backend: {:?}
         win32_exclude_orphan_events: {:?}
         win32_keyboard_layout_cache_interval: {:?}
 
@@ -246,6 +251,7 @@ pub trait Config: Send + Sync {
       self.secure_input_notification(),
 
       self.x11_use_xclip_backend(),
+      self.x11_use_xdotool_backend(),
       self.win32_exclude_orphan_events(),
       self.win32_keyboard_layout_cache_interval(),
 

espanso-config/src/config/parse/mod.rs

@@ -49,6 +49,7 @@ pub(crate) struct ParsedConfig {
   pub win32_exclude_orphan_events: Option<bool>,
   pub win32_keyboard_layout_cache_interval: Option<i64>,
   pub x11_use_xclip_backend: Option<bool>,
+  pub x11_use_xdotool_backend: Option<bool>,
 
   pub pre_paste_delay: Option<usize>,
   pub restore_clipboard_delay: Option<usize>,

espanso-config/src/config/parse/yaml.rs

@@ -121,6 +121,9 @@ pub(crate) struct YAMLConfig {
   #[serde(default)]
   pub x11_use_xclip_backend: Option<bool>,
 
+  #[serde(default)]
+  pub x11_use_xdotool_backend: Option<bool>,
+
   // Include/Exclude
   #[serde(default)]
   pub includes: Option<Vec<String>>,
@@ -213,6 +216,7 @@ impl TryFrom<YAMLConfig> for ParsedConfig {
       win32_exclude_orphan_events: yaml_config.win32_exclude_orphan_events,
       win32_keyboard_layout_cache_interval: yaml_config.win32_keyboard_layout_cache_interval,
       x11_use_xclip_backend: yaml_config.x11_use_xclip_backend,
+      x11_use_xdotool_backend: yaml_config.x11_use_xdotool_backend,
 
       use_standard_includes: yaml_config.use_standard_includes,
       includes: yaml_config.includes,
@@ -273,6 +277,7 @@ mod tests {
     win32_exclude_orphan_events: false
     win32_keyboard_layout_cache_interval: 300
     x11_use_xclip_backend: true
+    x11_use_xdotool_backend: true
       
     use_standard_includes: true
     includes: ["test1"]
@@ -329,6 +334,7 @@ mod tests {
         win32_exclude_orphan_events: Some(false),
         win32_keyboard_layout_cache_interval: Some(300),
         x11_use_xclip_backend: Some(true),
+        x11_use_xdotool_backend: Some(true),
 
         pre_paste_delay: Some(300),
         evdev_modifier_delay: Some(40),

espanso-config/src/config/resolve.rs

@@ -331,6 +331,10 @@ impl Config for ResolvedConfig {
   fn x11_use_xclip_backend(&self) -> bool {
     self.parsed.x11_use_xclip_backend.unwrap_or(false)
   }
+
+  fn x11_use_xdotool_backend(&self) -> bool {
+    self.parsed.x11_use_xdotool_backend.unwrap_or(false)
+  }
 }
 
 impl ResolvedConfig {
@@ -417,6 +421,7 @@ impl ResolvedConfig {
       win32_exclude_orphan_events,
       win32_keyboard_layout_cache_interval,
       x11_use_xclip_backend,
+      x11_use_xdotool_backend,
       includes,
       excludes,
       extra_includes,

espanso-config/src/legacy/mod.rs

@@ -410,6 +410,10 @@ impl Config for LegacyInteropConfig {
   fn x11_use_xclip_backend(&self) -> bool {
     false
   }
+
+  fn x11_use_xdotool_backend(&self) -> bool {
+    false
+  }
 }
 
 struct LegacyMatchGroup {