feat: make emacs readline keybindings configurable (#382)

yazi-config/preset/keymap.toml

@@ -171,40 +171,56 @@ keymap = [
 [input]
 
 keymap = [
-	{ on = [ "<C-q>" ],       exec = "close",          desc = "Cancel input" },
-	{ on = [ "<Enter>" ],     exec = "close --submit", desc = "Submit the input" },
-	{ on = [ "<Esc>" ],       exec = "escape",         desc = "Go back the normal mode, or cancel input" },
+	{ on = [ "<C-q>" ],   exec = "close",          desc = "Cancel input" },
+	{ on = [ "<Enter>" ], exec = "close --submit", desc = "Submit the input" },
+	{ on = [ "<Esc>" ],   exec = "escape",         desc = "Go back the normal mode, or cancel input" },
 
 	# Mode
 	{ on = [ "i" ], exec = "insert",                              desc = "Enter insert mode" },
 	{ on = [ "a" ], exec = "insert --append",                     desc = "Enter append mode" },
+	{ on = [ "I" ], exec = [ "move -999", "insert" ],             desc = "Move to the BOL, and enter insert mode" },
+	{ on = [ "A" ], exec = [ "move 999", "insert --append" ],     desc = "Move to the EOL, and enter append mode" },
 	{ on = [ "v" ], exec = "visual",                              desc = "Enter visual mode" },
 	{ on = [ "V" ], exec = [ "move -999", "visual", "move 999" ], desc = "Enter visual mode and select all" },
 
-	# Navigation
-	{ on = [ "h" ], exec = "move -1", desc = "Move cursor left" },
-	{ on = [ "l" ], exec = "move 1",  desc = "Move cursor right" },
+	# Character-wise movement
+	{ on = [ "h" ],       exec = "move -1", desc = "Move back a character" },
+	{ on = [ "l" ],       exec = "move 1",  desc = "Move forward a character" },
+	{ on = [ "<Left>" ],  exec = "move -1", desc = "Move back a character" },
+	{ on = [ "<Right>" ], exec = "move 1",  desc = "Move forward a character" },
+	{ on = [ "<C-b>" ],   exec = "move -1", desc = "Move back a character" },
+	{ on = [ "<C-f>" ],   exec = "move 1",  desc = "Move forward a character" },
 
-	{ on = [ "0" ], exec = "move -999",                       desc = "Move to the BOL" },
-	{ on = [ "$" ], exec = "move 999",                        desc = "Move to the EOL" },
-	{ on = [ "I" ], exec = [ "move -999", "insert" ],         desc = "Move to the BOL, and enter insert mode" },
-	{ on = [ "A" ], exec = [ "move 999", "insert --append" ], desc = "Move to the EOL, and enter append mode" },
+	# Word-wise movement
+	{ on = [ "b" ],     exec = "backward",              desc = "Move back to the start of the current or previous word" },
+	{ on = [ "w" ],     exec = "forward",               desc = "Move forward to the start of the next word" },
+	{ on = [ "e" ],     exec = "forward --end-of-word", desc = "Move forward to the end of the current or next word" },
+	{ on = [ "<A-b>" ], exec = "backward",              desc = "Move back to the start of the current or previous word" },
+	{ on = [ "<A-f>" ], exec = "forward --end-of-word", desc = "Move forward to the end of the current or next word" },
 
-	{ on = [ "<Left>" ],  exec = "move -1", desc = "Move cursor left" },
-	{ on = [ "<Right>" ], exec = "move 1",  desc = "Move cursor right" },
+	# Line-wise movement
+	{ on = [ "0" ],     exec = "move -999", desc = "Move to the BOL" },
+	{ on = [ "$" ],     exec = "move 999",  desc = "Move to the EOL" },
+	{ on = [ "<C-a>" ], exec = "move -999", desc = "Move to the BOL" },
+	{ on = [ "<C-e>" ], exec = "move 999",  desc = "Move to the EOL" },
 
-	{ on = [ "b" ], exec = "backward",              desc = "Move to the beginning of the previous word" },
-	{ on = [ "w" ], exec = "forward",               desc = "Move to the beginning of the next word" },
-	{ on = [ "e" ], exec = "forward --end-of-word", desc = "Move to the end of the next word" },
+	# Delete
+	{ on = [ "<Backspace>" ], exec = "backspace",	        desc = "Delete the character before the cursor" },
+	{ on = [ "<C-h>" ],       exec = "backspace",         desc = "Delete the character before the cursor" },
+	{ on = [ "<C-d>" ],       exec = "backspace --under", desc = "Delete the character under the cursor" },
 
-	# Deletion
+	# Kill
+	{ on = [ "<C-u>" ], exec = "kill bol",      desc = "Kill backwards to the BOL" },
+	{ on = [ "<C-k>" ], exec = "kill eol",      desc = "Kill forwards to the EOL" },
+	{ on = [ "<C-w>" ], exec = "kill backward", desc = "Kill backwards to the start of the current word" },
+	{ on = [ "<A-d>" ], exec = "kill forward",  desc = "Kill forwards to the end of the current word" },
+
+	# Cut/Yank/Paste
 	{ on = [ "d" ], exec = "delete --cut",                              desc = "Cut the selected characters" },
 	{ on = [ "D" ], exec = [ "delete --cut", "move 999" ],              desc = "Cut until the EOL" },
 	{ on = [ "c" ], exec = "delete --cut --insert",                     desc = "Cut the selected characters, and enter insert mode" },
 	{ on = [ "C" ], exec = [ "delete --cut --insert", "move 999" ],     desc = "Cut until the EOL, and enter insert mode" },
 	{ on = [ "x" ], exec = [ "delete --cut", "move 1 --in-operating" ], desc = "Cut the current character" },
-
-	# Yank/Paste
 	{ on = [ "y" ], exec = "yank",           desc = "Copy the selected characters" },
 	{ on = [ "p" ], exec = "paste",          desc = "Paste the copied characters after the cursor" },
 	{ on = [ "P" ], exec = "paste --before", desc = "Paste the copied characters before the cursor" },

yazi-config/src/popup/offset.rs

@@ -32,3 +32,8 @@ impl TryFrom<Vec<i16>> for Offset {
 		})
 	}
 }
+
+impl Offset {
+	#[inline]
+	pub fn line() -> Self { Self { x: 0, y: 0, width: u16::MAX, height: 1 } }
+}

yazi-core/src/help/commands/filter.rs

@@ -1,6 +1,6 @@
-use yazi_config::keymap::Exec;
+use yazi_config::{keymap::Exec, popup::{Offset, Origin, Position}};
 
-use crate::help::Help;
+use crate::{help::Help, input::Input};
 
 pub struct Opt;
 
@@ -10,7 +10,10 @@ impl From<&Exec> for Opt {
 
 impl Help {
 	pub fn filter(&mut self, _: impl Into<Opt>) -> bool {
-		self.in_filter = Some(Default::default());
+		let mut input = Input::default();
+		input.position = Position::new(Origin::BottomLeft, Offset::line());
+
+		self.in_filter = Some(input);
 		self.filter_apply();
 		true
 	}

yazi-core/src/help/help.rs

@@ -1,3 +1,4 @@
+use crossterm::event::KeyCode;
 use unicode_width::UnicodeWidthStr;
 use yazi_config::{keymap::{Control, Key, KeymapLayer}, KEYMAP};
 use yazi_shared::Term;
@@ -65,11 +66,14 @@ impl Help {
 			return true;
 		}
 
-		if input.type_(key) {
-			return self.filter_apply();
-		}
+		let b = match &key {
+			Key { code: KeyCode::Backspace, shift: false, ctrl: false, alt: false } => {
+				input.backspace(false)
+			}
+			_ => input.type_(key),
+		};
 
-		false
+		if b { self.filter_apply() } else { false }
 	}
 }
 

yazi-core/src/input/commands/backspace.rs

@@ -0,0 +1,38 @@
+use yazi_config::keymap::Exec;
+
+use crate::input::Input;
+
+pub struct Opt {
+	under: bool,
+}
+
+impl From<&Exec> for Opt {
+	fn from(e: &Exec) -> Self { Self { under: e.named.contains_key("under") } }
+}
+impl From<bool> for Opt {
+	fn from(under: bool) -> Self { Self { under } }
+}
+
+impl Input {
+	pub fn backspace(&mut self, opt: impl Into<Opt>) -> bool {
+		let opt = opt.into() as Opt;
+		let snap = self.snaps.current_mut();
+
+		if !opt.under && snap.cursor < 1 {
+			return false;
+		} else if opt.under && snap.cursor >= snap.value.len() {
+			return false;
+		}
+
+		if opt.under {
+			snap.value.remove(snap.idx(snap.cursor).unwrap());
+			self.move_(0);
+		} else {
+			snap.value.remove(snap.idx(snap.cursor - 1).unwrap());
+			self.move_(-1);
+		}
+
+		self.flush_value();
+		true
+	}
+}

yazi-core/src/input/commands/forward.rs

@@ -14,14 +14,13 @@ impl From<&Exec> for Opt {
 impl Input {
 	pub fn forward(&mut self, opt: impl Into<Opt>) -> bool {
 		let opt = opt.into() as Opt;
-
 		let snap = self.snap();
-		if snap.value.is_empty() {
-			return self.move_(0);
-		}
 
 		let mut it = snap.value.chars().skip(snap.cursor).enumerate();
-		let mut prev = CharKind::new(it.next().unwrap().1);
+		let Some(mut prev) = it.next().map(|(_, c)| CharKind::new(c)) else {
+			return self.move_(0);
+		};
+
 		for (i, c) in it {
 			let c = CharKind::new(c);
 			let b = if opt.end_of_word {

yazi-core/src/input/commands/kill.rs

@@ -0,0 +1,96 @@
+use std::ops::RangeBounds;
+
+use yazi_config::keymap::Exec;
+use yazi_shared::CharKind;
+
+use crate::input::Input;
+
+pub struct Opt<'a> {
+	kind: &'a str,
+}
+
+impl<'a> From<&'a Exec> for Opt<'a> {
+	fn from(e: &'a Exec) -> Self {
+		Self { kind: e.args.first().map(|s| s.as_str()).unwrap_or_default() }
+	}
+}
+
+impl Input {
+	fn kill_range(&mut self, range: impl RangeBounds<usize>) -> bool {
+		let snap = self.snap_mut();
+		snap.cursor = match range.start_bound() {
+			std::ops::Bound::Included(i) => *i,
+			std::ops::Bound::Excluded(_) => unreachable!(),
+			std::ops::Bound::Unbounded => 0,
+		};
+		if snap.value.drain(range).next().is_none() {
+			return false;
+		}
+
+		self.move_(0);
+		self.flush_value();
+		true
+	}
+
+	/// Searches for a word boundary and returns the movement in the cursor
+	/// position.
+	///
+	/// A word boundary is where the [`CharKind`] changes.
+	///
+	/// If `skip_whitespace_first` is true, we skip initial whitespace.
+	/// Otherwise, we skip whitespace after reaching a word boundary.
+	///
+	/// If `stop_before_boundary` is true, returns how many characters the cursor
+	/// needs to move to be at the character *BEFORE* the word boundary, or until
+	/// the end of the iterator.
+	///
+	/// Otherwise, returns how many characters to move to reach right *AFTER* the
+	/// word boundary, or the end of the iterator.
+	fn find_word_boundary(input: impl Iterator<Item = char> + Clone) -> usize {
+		fn count_spaces(input: impl Iterator<Item = char>) -> usize {
+			// Move until we don't see any more whitespace.
+			input.take_while(|&c| CharKind::new(c) == CharKind::Space).count()
+		}
+
+		fn count_characters(mut input: impl Iterator<Item = char>) -> usize {
+			// Determine the current character class.
+			let first = match input.next() {
+				Some(c) => CharKind::new(c),
+				None => return 0,
+			};
+
+			// Move until we see a different character class or the end of the iterator.
+			input.take_while(|&c| CharKind::new(c) == first).count() + 1
+		}
+
+		let spaces = count_spaces(input.clone());
+		spaces + count_characters(input.skip(spaces))
+	}
+
+	pub fn kill<'a>(&mut self, opt: impl Into<Opt<'a>>) -> bool {
+		let opt = opt.into() as Opt;
+		let snap = self.snap_mut();
+
+		match opt.kind.as_bytes() {
+			b"bol" => {
+				let end = snap.idx(snap.cursor).unwrap_or(snap.len());
+				self.kill_range(..end)
+			}
+			b"eol" => {
+				let start = snap.idx(snap.cursor).unwrap_or(snap.len());
+				self.kill_range(start..)
+			}
+			b"backward" => {
+				let end = snap.idx(snap.cursor).unwrap_or(snap.len());
+				let start = end - Self::find_word_boundary(snap.value[..end].chars().rev());
+				self.kill_range(start..end)
+			}
+			b"forward" => {
+				let start = snap.idx(snap.cursor).unwrap_or(snap.len());
+				let end = start + Self::find_word_boundary(snap.value[start..].chars());
+				self.kill_range(start..end)
+			}
+			_ => false,
+		}
+	}
+}

yazi-core/src/input/commands/mod.rs

@@ -1,3 +1,4 @@
+mod backspace;
 mod backward;
 mod close;
 mod complete;
@@ -5,6 +6,7 @@ mod delete;
 mod escape;
 mod forward;
 mod insert;
+mod kill;
 mod move_;
 mod paste;
 mod redo;

yazi-core/src/input/commands/type_.rs

@@ -1,8 +1,4 @@
-use std::ops::RangeBounds;
-
-use crossterm::event::KeyCode;
 use yazi_config::keymap::{Exec, Key};
-use yazi_shared::CharKind;
 
 use crate::input::{Input, InputMode};
 
@@ -13,77 +9,6 @@ impl From<&Exec> for Opt {
 }
 
 impl Input {
-	/// Searches for a word boundary and returns the movement in the cursor
-	/// position.
-	///
-	/// A word boundary is where the [`CharKind`] changes.
-	///
-	/// If `skip_whitespace_first` is true, we skip initial whitespace.
-	/// Otherwise, we skip whitespace after reaching a word boundary.
-	///
-	/// If `stop_before_boundary` is true, returns how many characters the cursor
-	/// needs to move to be at the character *BEFORE* the word boundary, or until
-	/// the end of the iterator.
-	///
-	/// Otherwise, returns how many characters to move to reach right *AFTER* the
-	/// word boundary, or the end of the iterator.
-	fn find_word_boundary(input: impl Iterator<Item = char> + Clone) -> usize {
-		fn count_spaces(input: impl Iterator<Item = char>) -> usize {
-			// Move until we don't see any more whitespace.
-			input.take_while(|&c| CharKind::new(c) == CharKind::Space).count()
-		}
-
-		fn count_characters(mut input: impl Iterator<Item = char>) -> usize {
-			// Determine the current character class.
-			let first = match input.next() {
-				Some(c) => CharKind::new(c),
-				None => return 0,
-			};
-
-			// Move until we see a different character class or the end of the iterator.
-			input.take_while(|&c| CharKind::new(c) == first).count() + 1
-		}
-
-		let spaces = count_spaces(input.clone());
-		spaces + count_characters(input.skip(spaces))
-	}
-
-	fn delete_range(&mut self, range: impl RangeBounds<usize>) -> bool {
-		let snap = self.snap_mut();
-		snap.cursor = match range.start_bound() {
-			std::ops::Bound::Included(i) => *i,
-			std::ops::Bound::Excluded(_) => unreachable!(),
-			std::ops::Bound::Unbounded => 0,
-		};
-		if snap.value.drain(range).next().is_none() {
-			return false;
-		}
-
-		self.move_(0);
-		self.flush_value();
-		true
-	}
-
-	fn backspace(&mut self, under: bool) -> bool {
-		let snap = self.snaps.current_mut();
-		if !under && snap.cursor < 1 {
-			return false;
-		} else if under && snap.cursor >= snap.value.len() {
-			return false;
-		}
-
-		if under {
-			snap.value.remove(snap.idx(snap.cursor).unwrap());
-			self.move_(0);
-		} else {
-			snap.value.remove(snap.idx(snap.cursor - 1).unwrap());
-			self.move_(-1);
-		}
-
-		self.flush_value();
-		true
-	}
-
 	pub fn type_(&mut self, key: &Key) -> bool {
 		if self.mode() != InputMode::Insert {
 			return false;
@@ -93,71 +18,6 @@ impl Input {
 			let mut bits = [0; 4];
 			return self.type_str(c.encode_utf8(&mut bits));
 		}
-
-		use KeyCode::{Backspace, Char as C};
-
-		match key {
-			// Move to the start of the line
-			Key { code: C('a'), shift: false, ctrl: true, alt: false } => self.move_(isize::MIN),
-			// Move to the end of the line
-			Key { code: C('e'), shift: false, ctrl: true, alt: false } => self.move_(isize::MAX),
-
-			// Move back a character
-			Key { code: C('b'), shift: false, ctrl: true, alt: false } => self.move_(-1),
-			// Move forward a character
-			Key { code: C('f'), shift: false, ctrl: true, alt: false } => self.move_(1),
-
-			// Delete the character before the cursor
-			Key { code: Backspace, shift: false, ctrl: false, alt: false } => self.backspace(false),
-			Key { code: C('h'), shift: false, ctrl: true, alt: false } => self.backspace(false),
-			// Delete the character under the cursor
-			Key { code: C('d'), shift: false, ctrl: true, alt: false } => self.backspace(true),
-
-			// Move back to the start of the current or previous word
-			Key { code: C('b'), shift: false, ctrl: false, alt: true } => {
-				let snap = self.snap();
-				let idx = snap.idx(snap.cursor).unwrap_or(snap.len());
-
-				let step = Self::find_word_boundary(snap.value[..idx].chars().rev());
-				self.move_(-(step as isize))
-			}
-			// Move forward to the end of the next word
-			Key { code: C('f'), shift: false, ctrl: false, alt: true } => {
-				let snap = self.snap();
-				let step = Self::find_word_boundary(snap.value.chars().skip(snap.cursor));
-				self.move_(step as isize)
-			}
-
-			// Kill backwards to the start of the line
-			Key { code: C('u'), shift: false, ctrl: true, alt: false } => {
-				let snap = self.snap_mut();
-				let end = snap.idx(snap.cursor).unwrap_or(snap.len());
-				self.delete_range(..end)
-			}
-			// Kill forwards to the end of the line
-			Key { code: C('k'), shift: false, ctrl: true, alt: false } => {
-				let snap = self.snap_mut();
-				let start = snap.idx(snap.cursor).unwrap_or(snap.len());
-				self.delete_range(start..)
-			}
-
-			// Kill backwards to the start of the current word
-			Key { code: C('w'), shift: false, ctrl: true, alt: false }
-			| Key { code: Backspace, shift: false, ctrl: false, alt: true } => {
-				let snap = self.snap_mut();
-				let end = snap.idx(snap.cursor).unwrap_or(snap.len());
-				let start = end - Self::find_word_boundary(snap.value[..end].chars().rev());
-				self.delete_range(start..end)
-			}
-			// Kill forwards to the end of the current word
-			Key { code: C('d'), shift: false, ctrl: false, alt: true } => {
-				let snap = self.snap_mut();
-				let start = snap.idx(snap.cursor).unwrap_or(snap.len());
-				let end = start + Self::find_word_boundary(snap.value[start..].chars());
-				self.delete_range(start..end)
-			}
-
-			_ => false,
-		}
+		false
 	}
 }

yazi-fm/src/executor.rs

@@ -13,10 +13,10 @@ impl<'a> Executor<'a> {
 		if self.cx.which.visible {
 			return self.cx.which.press(key);
 		}
-		if self.cx.input.visible && self.cx.input.type_(&key) {
+		if self.cx.help.visible && self.cx.help.type_(&key) {
 			return true;
 		}
-		if self.cx.help.visible && self.cx.help.type_(&key) {
+		if self.cx.input.visible && self.cx.input.type_(&key) {
 			return true;
 		}
 
@@ -212,6 +212,8 @@ impl<'a> Executor<'a> {
 		on!(close);
 		on!(escape);
 		on!(move_, "move");
+		on!(backward);
+		on!(forward);
 
 		if exec.cmd.as_str() == "complete" {
 			return if exec.named.contains_key("trigger") {
@@ -226,10 +228,7 @@ impl<'a> Executor<'a> {
 				on!(insert);
 				on!(visual);
 
-				on!(backward);
-				on!(forward);
 				on!(delete);
-
 				on!(yank);
 				on!(paste);
 
@@ -241,7 +240,12 @@ impl<'a> Executor<'a> {
 					_ => false,
 				}
 			}
-			InputMode::Insert => false,
+			InputMode::Insert => {
+				on!(backspace);
+				on!(kill);
+
+				false
+			}
 		}
 	}