support bracketed paste (#571)

* support bracketed paste

* update demo

* fix clippy

* no need to enable bracketed paste, leave the behavior to user

examples/demo.rs

@@ -1,7 +1,8 @@
 use {
     crossterm::{
-        event::{KeyCode, KeyModifiers},
-        Result,
+        cursor::SetCursorStyle,
+        event::{DisableBracketedPaste, KeyCode, KeyModifiers},
+        execute, Result,
     },
     nu_ansi_term::{Color, Style},
     reedline::{
@@ -10,9 +11,9 @@ use {
         EditCommand, EditMode, Emacs, ExampleHighlighter, Keybindings, ListMenu, Reedline,
         ReedlineEvent, ReedlineMenu, Signal, Vi,
     },
+    std::io::stdout,
 };
 
-use crossterm::cursor::SetCursorStyle;
 use reedline::CursorConfig;
 #[cfg(not(any(feature = "sqlite", feature = "sqlite-dynlib")))]
 use reedline::FileBackedHistory;
@@ -57,7 +58,6 @@ fn main() -> Result<()> {
         "こんにちは世界".into(),
         "こんばんは世界".into(),
     ];
-
     let completer = Box::new(DefaultCompleter::new_with_wordlen(commands.clone(), 2));
 
     let cursor_config = CursorConfig {
@@ -88,6 +88,11 @@ fn main() -> Result<()> {
         ))
         .with_validator(Box::new(DefaultValidator))
         .with_ansi_colors(true);
+    let res = line_editor.enable_bracketed_paste();
+    let bracketed_paste_enabled = res.is_ok();
+    if !bracketed_paste_enabled {
+        println!("Warn: failed to enable bracketed paste mode: {res:?}");
+    }
 
     // Adding default menus for the compiled reedline
     line_editor = line_editor
@@ -211,6 +216,9 @@ fn main() -> Result<()> {
         }
     }
 
+    if bracketed_paste_enabled {
+        let _ = execute!(stdout(), DisableBracketedPaste);
+    }
     println!();
     Ok(())
 }

src/edit_mode/emacs.rs

@@ -156,7 +156,7 @@ impl EditMode for Emacs {
             Event::Resize(width, height) => ReedlineEvent::Resize(width, height),
             Event::FocusGained => ReedlineEvent::None,
             Event::FocusLost => ReedlineEvent::None,
-            Event::Paste(_) => ReedlineEvent::None,
+            Event::Paste(body) => ReedlineEvent::Edit(vec![EditCommand::InsertString(body)]),
         }
     }
 

src/edit_mode/vi/mod.rs

@@ -153,7 +153,7 @@ impl EditMode for Vi {
             Event::Resize(width, height) => ReedlineEvent::Resize(width, height),
             Event::FocusGained => ReedlineEvent::None,
             Event::FocusLost => ReedlineEvent::None,
-            Event::Paste(_) => ReedlineEvent::None,
+            Event::Paste(body) => ReedlineEvent::Edit(vec![EditCommand::InsertString(body)]),
         }
     }
 

src/engine.rs

@@ -1,3 +1,6 @@
+use crossterm::event::{DisableBracketedPaste, EnableBracketedPaste};
+use crossterm::execute;
+
 use crate::{enums::ReedlineRawEvent, CursorConfig};
 #[cfg(feature = "bashisms")]
 use crate::{
@@ -130,6 +133,9 @@ pub struct Reedline {
     // Use different cursors depending on the current edit mode
     cursor_shapes: Option<CursorConfig>,
 
+    // Indicate if global terminal have enabled BracketedPaste
+    bracket_paste_enabled: bool,
+
     #[cfg(feature = "external_printer")]
     external_printer: Option<ExternalPrinter<String>>,
 }
@@ -144,6 +150,9 @@ impl Drop for Reedline {
         // Ensures that the terminal is in a good state if we panic semigracefully
         // Calling `disable_raw_mode()` twice is fine with Linux
         let _ignore = terminal::disable_raw_mode();
+        if self.bracket_paste_enabled {
+            let _ = execute!(io::stdout(), DisableBracketedPaste);
+        }
     }
 }
 
@@ -183,6 +192,7 @@ impl Reedline {
             menus: Vec::new(),
             buffer_editor: None,
             cursor_shapes: None,
+            bracket_paste_enabled: false,
             #[cfg(feature = "external_printer")]
             external_printer: None,
         }
@@ -198,6 +208,15 @@ impl Reedline {
         Some(HistorySessionId::new(nanos))
     }
 
+    /// Enable BracketedPaste feature.
+    pub fn enable_bracketed_paste(&mut self) -> Result<()> {
+        let res = execute!(io::stdout(), EnableBracketedPaste);
+        if res.is_ok() {
+            self.bracket_paste_enabled = true;
+        }
+        res
+    }
+
     /// Return the previously generated history session id
     pub fn get_history_session_id(&self) -> Option<HistorySessionId> {
         self.history_session_id