feat(config): add search trigger field

espanso-config/src/config/mod.rs

@@ -111,6 +111,9 @@ pub trait Config: Send + Sync {
   // which is used both for the detection and injection process.
   fn keyboard_layout(&self) -> Option<RMLVOConfig>;
 
+  // Trigger used to show the Search UI
+  fn search_trigger(&self) -> Option<String>;
+
   fn is_match<'a>(&self, app: &AppProperties<'a>) -> bool;
 
   fn pretty_dump(&self) -> String {

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

@@ -37,6 +37,7 @@ pub(crate) struct ParsedConfig {
   pub word_separators: Option<Vec<String>>,
   pub backspace_limit: Option<usize>,
   pub apply_patch: Option<bool>,
+  pub search_trigger: Option<String>,
 
   pub pre_paste_delay: Option<usize>,
   pub restore_clipboard_delay: Option<usize>,

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

@@ -82,6 +82,9 @@ pub(crate) struct YAMLConfig {
   #[serde(default)]
   pub keyboard_layout: Option<Mapping>,
 
+  #[serde(default)]
+  pub search_trigger: Option<String>,
+
   // Include/Exclude
   #[serde(default)]
   pub includes: Option<Vec<String>>,
@@ -155,6 +158,7 @@ impl TryFrom<YAMLConfig> for ParsedConfig {
           })
           .collect()
       }),
+      search_trigger: yaml_config.search_trigger,
 
       pre_paste_delay: yaml_config.pre_paste_delay,
       restore_clipboard_delay: yaml_config.restore_clipboard_delay,
@@ -206,6 +210,7 @@ mod tests {
       layout: test_layout
       variant: test_variant
       options: test_options
+    search_trigger: "search"
       
     use_standard_includes: true
     includes: ["test1"]
@@ -249,6 +254,7 @@ mod tests {
         backspace_limit: Some(10),
         apply_patch: Some(false),
         keyboard_layout: Some(keyboard_layout),
+        search_trigger: Some("search".to_owned()),
 
         pre_paste_delay: Some(300),
 

espanso-config/src/config/resolve.rs

@@ -274,6 +274,14 @@ impl Config for ResolvedConfig {
       options: layout.get("options").map(String::from),
     })
   }
+
+  fn search_trigger(&self) -> Option<String> {
+    match self.parsed.search_trigger.as_deref() {
+      Some("OFF") | Some("off") => None,
+      Some(x) => Some(x.to_string()),
+      None => Some("jkj".to_string()),
+    }
+  }
 }
 
 impl ResolvedConfig {
@@ -347,6 +355,7 @@ impl ResolvedConfig {
       word_separators,
       backspace_limit,
       keyboard_layout,
+      search_trigger,
       includes,
       excludes,
       extra_includes,

espanso-config/src/legacy/mod.rs

@@ -358,6 +358,10 @@ impl Config for LegacyInteropConfig {
   fn keyboard_layout(&self) -> Option<crate::config::RMLVOConfig> {
     None
   }
+
+  fn search_trigger(&self) -> Option<String> {
+    None
+  }
 }
 
 struct LegacyMatchGroup {