From 3b03edd7cb4f6acf290402d9c550bfc1acc34a0f Mon Sep 17 00:00:00 2001
From: Delyan Angelov <delian66@gmail.com>
Date: Thu, 27 Aug 2020 12:20:31 +0300
Subject: [PATCH] repl: fix compilation after 6921d46

---
 vlib/readline/readline_linux.c.v | 657 +++++++++++++++----------------
 1 file changed, 327 insertions(+), 330 deletions(-)

diff --git a/vlib/readline/readline_linux.c.v b/vlib/readline/readline_linux.c.v
index 09b64ebc5c..d427aa74f3 100644
--- a/vlib/readline/readline_linux.c.v
+++ b/vlib/readline/readline_linux.c.v
@@ -1,94 +1,93 @@
 // Copyright (c) 2019-2020 Alexander Medvednikov. All rights reserved.
 // Use of this source code is governed by an MIT license
 // that can be found in the LICENSE file.
-
 // Linux version
 // Will serve as more advanced input method
 // Based on the work of https://github.com/AmokHuginnsson/replxx
-
 module readline
 
 import term
 
 #include <termios.h>
 #include <sys/ioctl.h>
-
 // Defines actions to execute
 enum Action {
-  eof
-  nothing
-  insert_character
-  commit_line
-  delete_left
-  delete_right
-  move_cursor_left
-  move_cursor_right
-  move_cursor_begining
-  move_cursor_end
-  move_cursor_word_left
-  move_cursor_word_right
-  history_previous
-  history_next
-  overwrite
-  clear_screen
-  suspend
+	eof
+	nothing
+	insert_character
+	commit_line
+	delete_left
+	delete_right
+	move_cursor_left
+	move_cursor_right
+	move_cursor_begining
+	move_cursor_end
+	move_cursor_word_left
+	move_cursor_word_right
+	history_previous
+	history_next
+	overwrite
+	clear_screen
+	suspend
 }
 
 fn C.tcgetattr() int
+
 fn C.tcsetattr() int
-//fn C.ioctl() int
+
+// fn C.ioctl() int
 fn C.raise()
 
 // Enable the raw mode of the terminal
 // In raw mode all keypresses are directly sent to the program and no interpretation is done
 // Catches the SIGUSER (CTRL+C) Signal
 pub fn (mut r Readline) enable_raw_mode() {
-  if C.tcgetattr(0, &r.orig_termios) == -1 {
-    r.is_tty = false
-    r.is_raw = false
-    return
-  }
-  mut raw := r.orig_termios
-  raw.c_iflag &= ~( C.BRKINT | C.ICRNL | C.INPCK | C.ISTRIP | C.IXON )
-  raw.c_cflag |=  ( C.CS8 )
-  raw.c_lflag &= ~( C.ECHO | C.ICANON | C.IEXTEN | C.ISIG )
-  raw.c_cc[C.VMIN] = 1
-  raw.c_cc[C.VTIME] = 0
-  C.tcsetattr(0, C.TCSADRAIN, &raw)
-  r.is_raw = true
-  r.is_tty = true
+	if C.tcgetattr(0, &r.orig_termios) == -1 {
+		r.is_tty = false
+		r.is_raw = false
+		return
+	}
+	mut raw := r.orig_termios
+	raw.c_iflag &= ~(C.BRKINT | C.ICRNL | C.INPCK | C.ISTRIP | C.IXON)
+	raw.c_cflag |= (C.CS8)
+	raw.c_lflag &= ~(C.ECHO | C.ICANON | C.IEXTEN | C.ISIG)
+	raw.c_cc[C.VMIN] = 1
+	raw.c_cc[C.VTIME] = 0
+	C.tcsetattr(0, C.TCSADRAIN, &raw)
+	r.is_raw = true
+	r.is_tty = true
 }
 
 // Enable the raw mode of the terminal
 // Does not catch the SIGUSER (CTRL+C) Signal
 pub fn (mut r Readline) enable_raw_mode_nosig() {
-  if C.tcgetattr(0, &r.orig_termios) == -1 {
-    r.is_tty = false
-    r.is_raw = false
-    return
-  }
-  mut raw := r.orig_termios
-  raw.c_iflag &= ~( C.BRKINT | C.ICRNL | C.INPCK | C.ISTRIP | C.IXON )
-  raw.c_cflag |=  ( C.CS8 )
-  raw.c_lflag &= ~( C.ECHO | C.ICANON | C.IEXTEN )
-  raw.c_cc[C.VMIN] = 1
-  raw.c_cc[C.VTIME] = 0
-  C.tcsetattr(0, C.TCSADRAIN, &raw)
-  r.is_raw = true
-  r.is_tty = true
+	if C.tcgetattr(0, &r.orig_termios) == -1 {
+		r.is_tty = false
+		r.is_raw = false
+		return
+	}
+	mut raw := r.orig_termios
+	raw.c_iflag &= ~(C.BRKINT | C.ICRNL | C.INPCK | C.ISTRIP | C.IXON)
+	raw.c_cflag |= (C.CS8)
+	raw.c_lflag &= ~(C.ECHO | C.ICANON | C.IEXTEN)
+	raw.c_cc[C.VMIN] = 1
+	raw.c_cc[C.VTIME] = 0
+	C.tcsetattr(0, C.TCSADRAIN, &raw)
+	r.is_raw = true
+	r.is_tty = true
 }
 
 // Disable the raw mode of the terminal
 pub fn (mut r Readline) disable_raw_mode() {
-  if r.is_raw {
-    C.tcsetattr(0, C.TCSADRAIN, &r.orig_termios)
-    r.is_raw = false
-  }
+	if r.is_raw {
+		C.tcsetattr(0, C.TCSADRAIN, &r.orig_termios)
+		r.is_raw = false
+	}
 }
 
 // Read a single char
 pub fn (r Readline) read_char() int {
-  return utf8_getchar()
+	return utf8_getchar()
 }
 
 // Main function of the readline module
@@ -96,124 +95,122 @@ pub fn (r Readline) read_char() int {
 // Returns the completed line as utf8 ustring
 // Will return an error if line is empty
 pub fn (mut r Readline) read_line_utf8(prompt string) ?ustring {
-  r.current = ''.ustring()
-  r.cursor = 0
-  r.prompt = prompt
-  r.search_index = 0
-  r.prompt_offset = get_prompt_offset(prompt)
-  if r.previous_lines.len <= 1 {
-    r.previous_lines << ''.ustring()
-    r.previous_lines << ''.ustring()
-  }
-  else {
-    r.previous_lines[0] = ''.ustring()
-  }
-  if !r.is_raw {
-    r.enable_raw_mode()
-  }
-
-  print(r.prompt)
-  for {
-    C.fflush(C.stdout)
-    c := r.read_char()
-    a := r.analyse(c)
-    if r.execute(a, c) {
-      break
-    }
-  }
-
-  r.previous_lines[0] = ''.ustring()
-  r.search_index = 0
-  r.disable_raw_mode()
-  if r.current.s == '' {
-    return error('empty line')
-  }
-  return r.current
+	r.current = ''.ustring()
+	r.cursor = 0
+	r.prompt = prompt
+	r.search_index = 0
+	r.prompt_offset = get_prompt_offset(prompt)
+	if r.previous_lines.len <= 1 {
+		r.previous_lines << ''.ustring()
+		r.previous_lines << ''.ustring()
+	} else {
+		r.previous_lines[0] = ''.ustring()
+	}
+	if !r.is_raw {
+		r.enable_raw_mode()
+	}
+	print(r.prompt)
+	for {
+		C.fflush(C.stdout)
+		c := r.read_char()
+		a := r.analyse(c)
+		if r.execute(a, c) {
+			break
+		}
+	}
+	r.previous_lines[0] = ''.ustring()
+	r.search_index = 0
+	r.disable_raw_mode()
+	if r.current.s == '' {
+		return error('empty line')
+	}
+	return r.current
 }
 
 // Returns the string from the utf8 ustring
 pub fn (mut r Readline) read_line(prompt string) ?string {
-  s := r.read_line_utf8(prompt) or {
-    return error(err)
-  }
-  return s.s
+	s := r.read_line_utf8(prompt) or {
+		return error(err)
+	}
+	return s.s
 }
 
 // Standalone function without persistent functionnalities (eg: history)
 // Returns utf8 based ustring
 pub fn read_line_utf8(prompt string) ?ustring {
-  mut r := Readline{}
-  s := r.read_line_utf8(prompt) or {
-    return error(err)
-  }
-  return s
+	mut r := Readline{}
+	s := r.read_line_utf8(prompt) or {
+		return error(err)
+	}
+	return s
 }
 
 // Standalone function without persistent functionnalities (eg: history)
 // Return string from utf8 ustring
 pub fn read_line(prompt string) ?string {
-  mut r := Readline{}
-  s := r.read_line(prompt) or {
-    return error(err)
-  }
-  return s
+	mut r := Readline{}
+	s := r.read_line(prompt) or {
+		return error(err)
+	}
+	return s
 }
 
 fn get_prompt_offset(prompt string) int {
-  mut len := 0
-
-  for i := 0; i < prompt.len; i++ {
-    if prompt[i] == `\e` {
-      for ;i < prompt.len && prompt[i] != `m`; i++ {}
-    } else {
-      len = len + 1
-    }
-  }
-  return prompt.len - len
+	mut len := 0
+	for i := 0; i < prompt.len; i++ {
+		if prompt[i] == `\e` {
+			for ; i < prompt.len && prompt[i] != `m`; i++ {
+			}
+		} else {
+			len = len + 1
+		}
+	}
+	return prompt.len - len
 }
 
 fn (r Readline) analyse(c int) Action {
-  match c {
-    `\0`  { return .eof }
-    0x3   { return .eof } // End of Text
-    0x4   { return .eof } // End of Transmission
-    255   { return .eof }
-    `\n`  { return .commit_line }
-    `\r`  { return .commit_line }
-    `\f`  { return .clear_screen } // CTRL + L
-    `\b`  { return .delete_left } // Backspace
-    127   { return .delete_left } // DEL
-    27    { return r.analyse_control() } // ESC
-    1     { return .move_cursor_begining } // ^A
-    5     { return .move_cursor_end } // ^E
-    26    { return .suspend } // CTRL + Z, SUB
-    else  { return if c >= ` ` { Action.insert_character } else { Action.nothing } }
-  }
+	match byte(c) {
+		`\0` { return .eof }
+		0x3 { return .eof } // End of Text
+		0x4 { return .eof } // End of Transmission
+		255 { return .eof }
+		`\n` { return .commit_line }
+		`\r` { return .commit_line }
+		`\f` { return .clear_screen } // CTRL + L
+		`\b` { return .delete_left } // Backspace
+		127 { return .delete_left } // DEL
+		27 { return r.analyse_control() } // ESC
+		1 { return .move_cursor_begining } // ^A
+		5 { return .move_cursor_end } // ^E
+		26 { return .suspend } // CTRL + Z, SUB
+		else { return if c >= ` ` {
+				Action.insert_character
+			} else {
+				Action.nothing
+			} }
+	}
 }
 
 fn (r Readline) analyse_control() Action {
-  c := r.read_char()
-
-match c {
-	`[` {
-		sequence := r.read_char()
-		match sequence {
-			`C` { return .move_cursor_right }
-			`D` { return .move_cursor_left }
-			`B` { return .history_next }
-			`A` { return .history_previous }
-			`1` { return r.analyse_extended_control() }
-			`2` { return r.analyse_extended_control_no_eat(byte(sequence)) }
-			`3` { return r.analyse_extended_control_no_eat(byte(sequence)) }
-			else {}
+	c := r.read_char()
+	match byte(c) {
+		`[` {
+			sequence := r.read_char()
+			match byte(sequence) {
+				`C` { return .move_cursor_right }
+				`D` { return .move_cursor_left }
+				`B` { return .history_next }
+				`A` { return .history_previous }
+				`1` { return r.analyse_extended_control() }
+				`2` { return r.analyse_extended_control_no_eat(byte(sequence)) }
+				`3` { return r.analyse_extended_control_no_eat(byte(sequence)) }
+				else {}
+			}
 		}
+		else {}
 	}
-	else { }
-}
-
-
-/*
-//TODO
+	/*
+	//TODO
 match c {
 	case `[`:
 	sequence := r.read_char()
@@ -232,263 +229,263 @@ match c {
 	}
 	else:
 }
-*/
-
-
-
-
-  return .nothing
+	*/
+	return .nothing
 }
 
 fn (r Readline) analyse_extended_control() Action {
-  r.read_char() // Removes ;
-  c := r.read_char()
-  match c {
-    `5` {
-      direction := r.read_char()
-      match direction {
-        `C` { return .move_cursor_word_right }
-        `D` { return .move_cursor_word_left }
-       else {}
-      }
-    }
-    else {}
-  }
-  return .nothing
+	r.read_char() // Removes ;
+	c := r.read_char()
+	match byte(c) {
+		`5` {
+			direction := r.read_char()
+			match byte(direction) {
+				`C` { return .move_cursor_word_right }
+				`D` { return .move_cursor_word_left }
+				else {}
+			}
+		}
+		else {}
+	}
+	return .nothing
 }
 
 fn (r Readline) analyse_extended_control_no_eat(last_c byte) Action {
-  c := r.read_char()
-  match c {
-    `~` {
-      match last_c {
-        `3` { return .delete_right } // Suppr key
-        `2` { return .overwrite }
-        else {}
-      }
-    }
-    else {}
-  }
-  return .nothing
+	c := r.read_char()
+	match byte(c) {
+		`~` { match last_c {
+				`3` { return .delete_right } // Suppr key
+				`2` { return .overwrite }
+				else {}
+			} }
+		else {}
+	}
+	return .nothing
 }
 
 fn (mut r Readline) execute(a Action, c int) bool {
-  match a {
-    .eof                    { return r.eof() }
-    .insert_character       { r.insert_character(c) }
-    .commit_line            { return r.commit_line() }
-    .delete_left            { r.delete_character() }
-    .delete_right           { r.suppr_character() }
-    .move_cursor_left       { r.move_cursor_left() }
-    .move_cursor_right      { r.move_cursor_right() }
-    .move_cursor_begining   { r.move_cursor_begining() }
-    .move_cursor_end        { r.move_cursor_end() }
-    .move_cursor_word_left  { r.move_cursor_word_left() }
-    .move_cursor_word_right { r.move_cursor_word_right() }
-    .history_previous       { r.history_previous() }
-    .history_next           { r.history_next() }
-    .overwrite              { r.switch_overwrite() }
-    .clear_screen           { r.clear_screen() }
-    .suspend                { r.suspend() }
-    else {}
-  }
-  return false
+	match a {
+		.eof { return r.eof() }
+		.insert_character { r.insert_character(c) }
+		.commit_line { return r.commit_line() }
+		.delete_left { r.delete_character() }
+		.delete_right { r.suppr_character() }
+		.move_cursor_left { r.move_cursor_left() }
+		.move_cursor_right { r.move_cursor_right() }
+		.move_cursor_begining { r.move_cursor_begining() }
+		.move_cursor_end { r.move_cursor_end() }
+		.move_cursor_word_left { r.move_cursor_word_left() }
+		.move_cursor_word_right { r.move_cursor_word_right() }
+		.history_previous { r.history_previous() }
+		.history_next { r.history_next() }
+		.overwrite { r.switch_overwrite() }
+		.clear_screen { r.clear_screen() }
+		.suspend { r.suspend() }
+		else {}
+	}
+	return false
 }
 
 fn get_screen_columns() int {
-  ws := Winsize{}
-  cols := if C.ioctl(1, C.TIOCGWINSZ, &ws) == -1 { 80 } else { int(ws.ws_col) }
-  return cols
+	ws := Winsize{}
+	cols := if C.ioctl(1, C.TIOCGWINSZ, &ws) == -1 { 80 } else { int(ws.ws_col) }
+	return cols
 }
 
-fn shift_cursor(xpos int, yoffset int) {
-  if yoffset != 0 {
-    if yoffset > 0 {
-      term.cursor_down(yoffset)
-    }
-    else {
-      term.cursor_up(- yoffset)
-    }
-  }
-  // Absolute X position
-  print('\x1b[${xpos + 1}G')
+fn shift_cursor(xpos, yoffset int) {
+	if yoffset != 0 {
+		if yoffset > 0 {
+			term.cursor_down(yoffset)
+		} else {
+			term.cursor_up(-yoffset)
+		}
+	}
+	// Absolute X position
+	print('\x1b[${xpos+1}G')
 }
 
-fn calculate_screen_position(x_in int, y_in int, screen_columns int, char_count int, inp []int) []int {
-  mut out := inp
-  mut x := x_in
-  mut y := y_in
-  out[0] = x
-  out[1] = y
-  for chars_remaining := char_count; chars_remaining > 0; {
-    chars_this_row := if (x + chars_remaining) < screen_columns { chars_remaining } else { screen_columns - x }
-    out[0] = x + chars_this_row
-    out[1] = y
-    chars_remaining -= chars_this_row
-    x = 0
-    y++
-  }
-  if out[0] == screen_columns {
-    out[0] = 0
-    out[1]++
-  }
-  return out
+fn calculate_screen_position(x_in, y_in, screen_columns, char_count int, inp []int) []int {
+	mut out := inp
+	mut x := x_in
+	mut y := y_in
+	out[0] = x
+	out[1] = y
+	for chars_remaining := char_count; chars_remaining > 0; {
+		chars_this_row := if (x + chars_remaining) < screen_columns { chars_remaining } else { screen_columns -
+				x }
+		out[0] = x + chars_this_row
+		out[1] = y
+		chars_remaining -= chars_this_row
+		x = 0
+		y++
+	}
+	if out[0] == screen_columns {
+		out[0] = 0
+		out[1]++
+	}
+	return out
 }
 
 // Will redraw the line
 fn (mut r Readline) refresh_line() {
-  mut end_of_input := [0, 0]
-  end_of_input = calculate_screen_position(r.prompt.len, 0, get_screen_columns(), r.current.len, end_of_input)
-  end_of_input[1] += r.current.count('\n'.ustring())
-  mut cursor_pos := [0, 0]
-  cursor_pos = calculate_screen_position(r.prompt.len, 0, get_screen_columns(), r.cursor, cursor_pos)
-
-  shift_cursor(0, -r.cursor_row_offset)
-  term.erase_toend()
-  print(r.prompt)
-  print(r.current)
-  if end_of_input[0] == 0 && end_of_input[1] > 0 {
-    print('\n')
-  }
-  shift_cursor(cursor_pos[0] - r.prompt_offset, - (end_of_input[1] - cursor_pos[1]))
-  r.cursor_row_offset = cursor_pos[1]
+	mut end_of_input := [0, 0]
+	end_of_input = calculate_screen_position(r.prompt.len, 0, get_screen_columns(), r.current.len,
+		end_of_input)
+	end_of_input[1] += r.current.count('\n'.ustring())
+	mut cursor_pos := [0, 0]
+	cursor_pos = calculate_screen_position(r.prompt.len, 0, get_screen_columns(), r.cursor,
+		cursor_pos)
+	shift_cursor(0, -r.cursor_row_offset)
+	term.erase_toend()
+	print(r.prompt)
+	print(r.current)
+	if end_of_input[0] == 0 && end_of_input[1] > 0 {
+		print('\n')
+	}
+	shift_cursor(cursor_pos[0] - r.prompt_offset, -(end_of_input[1] - cursor_pos[1]))
+	r.cursor_row_offset = cursor_pos[1]
 }
 
 // End the line without a newline
 fn (mut r Readline) eof() bool {
-  r.previous_lines.insert(1, r.current)
-  r.cursor = r.current.len
-  if r.is_tty {
-    r.refresh_line()
-  }
-  return true
+	r.previous_lines.insert(1, r.current)
+	r.cursor = r.current.len
+	if r.is_tty {
+		r.refresh_line()
+	}
+	return true
 }
 
 fn (mut r Readline) insert_character(c int) {
-  if !r.overwrite || r.cursor == r.current.len {
-    r.current = r.current.left(r.cursor).ustring().add( utf32_to_str(u32(c)).ustring() ).add( r.current.right(r.cursor).ustring() )
-  } else {
-    r.current = r.current.left(r.cursor).ustring().add( utf32_to_str(u32(c)).ustring() ).add( r.current.right(r.cursor + 1).ustring() )
-  }
-  r.cursor++
-  // Refresh the line to add the new character
-  if r.is_tty {
-    r.refresh_line()
-  }
+	if !r.overwrite || r.cursor == r.current.len {
+		r.current = r.current.left(r.cursor).ustring().add(utf32_to_str(u32(c)).ustring()).add(r.current.right(r.cursor).ustring())
+	} else {
+		r.current = r.current.left(r.cursor).ustring().add(utf32_to_str(u32(c)).ustring()).add(r.current.right(r.cursor +
+			1).ustring())
+	}
+	r.cursor++
+	// Refresh the line to add the new character
+	if r.is_tty {
+		r.refresh_line()
+	}
 }
 
 // Removes the character behind cursor.
 fn (mut r Readline) delete_character() {
-  if r.cursor <= 0 {
-    return
-  }
-  r.cursor--
-  r.current = r.current.left(r.cursor).ustring().add( r.current.right(r.cursor + 1).ustring() )
-  r.refresh_line()
+	if r.cursor <= 0 {
+		return
+	}
+	r.cursor--
+	r.current = r.current.left(r.cursor).ustring().add(r.current.right(r.cursor + 1).ustring())
+	r.refresh_line()
 }
 
 // Removes the character in front of cursor.
 fn (mut r Readline) suppr_character() {
-  if r.cursor > r.current.len {
-    return
-  }
-  r.current = r.current.left(r.cursor).ustring().add( r.current.right(r.cursor + 1).ustring() )
-  r.refresh_line()
+	if r.cursor > r.current.len {
+		return
+	}
+	r.current = r.current.left(r.cursor).ustring().add(r.current.right(r.cursor + 1).ustring())
+	r.refresh_line()
 }
 
 // Add a line break then stops the main loop
 fn (mut r Readline) commit_line() bool {
-  r.previous_lines.insert(1, r.current)
-  a := '\n'.ustring()
-  r.current = r.current.add( a )
-  r.cursor = r.current.len
-  if r.is_tty {
-    r.refresh_line()
-    println('')
-  }
-  return true
+	r.previous_lines.insert(1, r.current)
+	a := '\n'.ustring()
+	r.current = r.current.add(a)
+	r.cursor = r.current.len
+	if r.is_tty {
+		r.refresh_line()
+		println('')
+	}
+	return true
 }
 
 fn (mut r Readline) move_cursor_left() {
-  if r.cursor > 0 {
-    r.cursor--
-    r.refresh_line()
-  }
+	if r.cursor > 0 {
+		r.cursor--
+		r.refresh_line()
+	}
 }
 
 fn (mut r Readline) move_cursor_right() {
-  if r.cursor < r.current.len {
-    r.cursor++
-    r.refresh_line()
-  }
+	if r.cursor < r.current.len {
+		r.cursor++
+		r.refresh_line()
+	}
 }
 
 fn (mut r Readline) move_cursor_begining() {
-  r.cursor = 0
-  r.refresh_line()
+	r.cursor = 0
+	r.refresh_line()
 }
 
 fn (mut r Readline) move_cursor_end() {
-  r.cursor = r.current.len
-  r.refresh_line()
+	r.cursor = r.current.len
+	r.refresh_line()
 }
 
 // Check if the character is considered as a word-breaking character
 fn (r Readline) is_break_character(c string) bool {
-  break_characters := ' \t\v\f\a\b\r\n`~!@#$%^&*()-=+[{]}\\|;:\'",<.>/?'
-  return break_characters.contains(c)
+	break_characters := ' \t\v\f\a\b\r\n`~!@#$%^&*()-=+[{]}\\|;:\'",<.>/?'
+	return break_characters.contains(c)
 }
 
 fn (mut r Readline) move_cursor_word_left() {
-  if r.cursor > 0 {
-    for ; r.cursor > 0 && r.is_break_character(r.current.at(r.cursor - 1)); r.cursor-- {}
-    for ; r.cursor > 0 && !r.is_break_character(r.current.at(r.cursor - 1)); r.cursor-- {}
-    r.refresh_line()
-  }
+	if r.cursor > 0 {
+		for ; r.cursor > 0 && r.is_break_character(r.current.at(r.cursor - 1)); r.cursor-- {
+		}
+		for ; r.cursor > 0 && !r.is_break_character(r.current.at(r.cursor - 1)); r.cursor-- {
+		}
+		r.refresh_line()
+	}
 }
 
 fn (mut r Readline) move_cursor_word_right() {
-  if r.cursor < r.current.len {
-    for ; r.cursor < r.current.len && r.is_break_character(r.current.at(r.cursor)); r.cursor++ {}
-    for ; r.cursor < r.current.len && !r.is_break_character(r.current.at(r.cursor)); r.cursor++ {}
-    r.refresh_line()
-  }
+	if r.cursor < r.current.len {
+		for ; r.cursor < r.current.len && r.is_break_character(r.current.at(r.cursor)); r.cursor++ {
+		}
+		for ; r.cursor < r.current.len && !r.is_break_character(r.current.at(r.cursor)); r.cursor++ {
+		}
+		r.refresh_line()
+	}
 }
 
 fn (mut r Readline) switch_overwrite() {
-  r.overwrite = !r.overwrite
+	r.overwrite = !r.overwrite
 }
 
 fn (mut r Readline) clear_screen() {
-  term.set_cursor_position(1, 1)
-  term.erase_clear()
-  r.refresh_line()
+	term.set_cursor_position(1, 1)
+	term.erase_clear()
+	r.refresh_line()
 }
 
 fn (mut r Readline) history_previous() {
-  if r.search_index + 2 >= r.previous_lines.len {
-    return
-  }
-  if r.search_index == 0 {
-    r.previous_lines[0] = r.current
-  }
-  r.search_index++
-  r.current = r.previous_lines[r.search_index]
-  r.cursor = r.current.len
-  r.refresh_line()
+	if r.search_index + 2 >= r.previous_lines.len {
+		return
+	}
+	if r.search_index == 0 {
+		r.previous_lines[0] = r.current
+	}
+	r.search_index++
+	r.current = r.previous_lines[r.search_index]
+	r.cursor = r.current.len
+	r.refresh_line()
 }
 
 fn (mut r Readline) history_next() {
-  if r.search_index <= 0 {
-    return
-  }
-  r.search_index--
-  r.current = r.previous_lines[r.search_index]
-  r.cursor = r.current.len
-  r.refresh_line()
+	if r.search_index <= 0 {
+		return
+	}
+	r.search_index--
+	r.current = r.previous_lines[r.search_index]
+	r.cursor = r.current.len
+	r.refresh_line()
 }
 
 fn (mut r Readline) suspend() {
-  C.raise(C.SIGSTOP)
-  r.refresh_line()
+	C.raise(C.SIGSTOP)
+	r.refresh_line()
 }