option to configure PromptInputLine prompt

- Introduces an option to set custom prompt text
- If 'prompt' not passed in parameters, default value of "> " used

config/src/keyassignment.rs

@@ -460,6 +460,13 @@ pub struct PromptInputLine {
     /// Descriptive text to show ahead of prompt
     #[dynamic(default)]
     pub description: String,
+    /// Text to show for prompt
+    #[dynamic(default = "default_prompt")]
+    pub prompt: String,
+}
+
+fn default_prompt() -> String {
+    "> ".to_string()
 }
 
 #[derive(Debug, Clone, PartialEq, FromDynamic, ToDynamic)]

wezterm-gui/src/overlay/prompt.rs

@@ -67,7 +67,7 @@ pub fn show_line_prompt_overlay(
 
     let mut host = PromptHost::new();
     let mut editor = LineEditor::new(&mut term);
-    editor.set_prompt("> ");
+    editor.set_prompt(&args.prompt);
     let line = editor.read_line(&mut host)?;
 
     promise::spawn::spawn_into_main_thread(async move {