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Vi mode: avoid placing cursor beyond last character

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Today fish_cursor_selection_mode controls whether selection mode includes
the cursor. Since it's by default only used for Vi mode, perhaps use it to
also decide whether it should be allowed to select one-past the last character.

Not allowing to select to select one-past the last character is much nicer
in Vi mode.  Unfortunately Vi mode sometimes needs to temporarily select
past end (using forward-single-char and such), so reset fish_cursor_selection_mode
for the duration of the binding.

Also fix other things like cursor placement after yank/yank-pop.

Closes #10286
Closes #3299
This commit is contained in:
Johannes Altmanninger 2024-02-14 11:25:25 +01:00
parent bffc9515a8
commit d51f669647
4 changed files with 133 additions and 34 deletions
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43
share/functions/fish_vi_key_bindings.fish
View file

@ -65,12 +65,12 @@ function fish_vi_key_bindings --description 'vi-like key bindings for fish'
bind -s --preset -M default l forward-char
bind -s --preset -m insert \n execute
bind -s --preset -m insert \r execute
bind -s --preset -m insert o insert-line-under repaint-mode
bind -s --preset -m insert O insert-line-over repaint-mode
bind -s --preset -m insert o 'set fish_cursor_end_mode exclusive' insert-line-under repaint-mode
bind -s --preset -m insert O 'set fish_cursor_end_modefish_cursor_end_modeexclusive' insert-line-over repaint-mode
bind -s --preset -m insert i repaint-mode
bind -s --preset -m insert I beginning-of-line repaint-mode
bind -s --preset -m insert a forward-single-char repaint-mode
bind -s --preset -m insert A end-of-line repaint-mode
bind -s --preset -m insert a 'set fish_cursor_end_mode exclusive' forward-single-char repaint-mode
bind -s --preset -m insert A 'set fish_cursor_end_mode exclusive' end-of-line repaint-mode
bind -s --preset -m visual v begin-selection repaint-mode
bind -s --preset gg beginning-of-buffer
@ -98,8 +98,8 @@ function fish_vi_key_bindings --description 'vi-like key bindings for fish'
bind -s --preset gE backward-bigword
bind -s --preset w forward-word forward-single-char
bind -s --preset W forward-bigword forward-single-char
bind -s --preset e forward-single-char forward-word backward-char
bind -s --preset E forward-single-char forward-bigword backward-char
bind -s --preset e 'set fish_cursor_end_mode exclusive' forward-single-char forward-word backward-char 'set fish_cursor_end_mode inclusive'
bind -s --preset E 'set fish_cursor_end_mode exclusive' forward-single-char forward-bigword backward-char 'set fish_cursor_end_mode inclusive'
bind -s --preset -M insert \cn accept-autosuggestion
@ -112,10 +112,10 @@ function fish_vi_key_bindings --description 'vi-like key bindings for fish'
# Vi moves the cursor back if, after deleting, it is at EOL.
# To emulate that, move forward, then backward, which will be a NOP
# if there is something to move forward to.
bind -s --preset -M default x delete-char forward-single-char backward-char
bind -s --preset -M default x delete-char 'set fish_cursor_end_mode exclusive' forward-single-char backward-char 'set fish_cursor_end_mode inclusive'
bind -s --preset -M default X backward-delete-char
bind -s --preset -M insert -k dc delete-char forward-single-char backward-char
bind -s --preset -M default -k dc delete-char forward-single-char backward-char
bind -s --preset -M default -k dc delete-char 'set fish_cursor_end_mode exclusive' forward-single-char backward-char 'set fish_cursor_end_mode inclusive'
# Backspace deletes a char in insert mode, but not in normal/default mode.
bind -s --preset -M insert -k backspace backward-delete-char
@ -225,13 +225,13 @@ function fish_vi_key_bindings --description 'vi-like key bindings for fish'
# in vim p means paste *after* current character, so go forward a char before pasting
# also in vim, P means paste *at* current position (like at '|' with cursor = line),
# \ so there's no need to go back a char, just paste it without moving
bind -s --preset p forward-char yank
bind -s --preset p 'set -g fish_cursor_end_mode exclusive' forward-char 'set -g fish_cursor_end_modefish_cursor_end_modeinclusive' yank
bind -s --preset P yank
bind -s --preset gp yank-pop
# same vim 'pasting' note as upper
bind -s --preset '"*p' forward-char "commandline -i ( xsel -p; echo )[1]"
bind -s --preset '"*P' "commandline -i ( xsel -p; echo )[1]"
bind -s --preset '"*p' 'set -g fish_cursor_end_mode exclusive' forward-char 'set -g fish_cursor_end_mode inclusive' fish_clipboard_paste
bind -s --preset '"*P' fish_clipboard_paste
#
# Lowercase r, enters replace_one mode
@ -267,8 +267,8 @@ function fish_vi_key_bindings --description 'vi-like key bindings for fish'
bind -s --preset -M visual gE backward-bigword
bind -s --preset -M visual w forward-word
bind -s --preset -M visual W forward-bigword
bind -s --preset -M visual e forward-word
bind -s --preset -M visual E forward-bigword
bind -s --preset -M visual e 'set fish_cursor_end_mode exclusive' forward-single-char forward-word backward-char 'set fish_cursor_end_mode inclusive'
bind -s --preset -M visual E 'set fish_cursor_end_mode exclusive' forward-single-char forward-bigword backward-char 'set fish_cursor_end_mode inclusive'
bind -s --preset -M visual o swap-selection-start-stop repaint-mode
bind -s --preset -M visual f forward-jump
@ -306,7 +306,22 @@ function fish_vi_key_bindings --description 'vi-like key bindings for fish'
# Therefore it needs to be before setting fish_bind_mode.
fish_vi_cursor
set -g fish_cursor_selection_mode inclusive
function __fish_vi_key_bindings_on_mode_change --on-variable fish_bind_mode
switch $fish_bind_mode
case insert
set -g fish_cursor_end_mode exclusive
case '*'
set -g fish_cursor_end_mode inclusive
end
end
function __fish_vi_key_bindings_remove_handlers --on-variable __fish_active_key_bindings
functions --erase __fish_vi_key_bindings_remove_handlers
functions --erase __fish_vi_key_bindings_on_mode_change
functions --erase fish_vi_cursor_handle
functions --erase fish_vi_cursor_handle_preexec
set -e -g fish_cursor_end_mode
set -e -g fish_cursor_selection_mode
end
set fish_bind_mode $init_mode
end

1
src/editable_line.rs
View file

@ -123,6 +123,7 @@ impl EditableLine {
self.position
}
pub fn set_position(&mut self, position: usize) {
assert!(position <= self.len());
self.position = position;
}

26
src/env_dispatch.rs
View file

@ -9,8 +9,8 @@ use crate::input_common::{update_wait_on_escape_ms, update_wait_on_sequence_key_
use crate::output::ColorSupport;
use crate::proc::is_interactive_session;
use crate::reader::{
reader_change_cursor_selection_mode, reader_change_history, reader_schedule_prompt_repaint,
reader_set_autosuggestion_enabled,
reader_change_cursor_end_mode, reader_change_cursor_selection_mode, reader_change_history,
reader_schedule_prompt_repaint, reader_set_autosuggestion_enabled,
};
use crate::screen::screen_set_midnight_commander_hack;
use crate::screen::LAYOUT_CACHE_SHARED;
@ -85,6 +85,10 @@ static VAR_DISPATCH_TABLE: once_cell::sync::Lazy<VarDispatchTable> =
L!("fish_cursor_selection_mode"),
handle_fish_cursor_selection_mode_change,
);
table.add_anon(
L!("fish_cursor_end_mode"),
handle_fish_cursor_end_mode_change,
);
table
});
@ -259,6 +263,24 @@ fn handle_fish_cursor_selection_mode_change(vars: &EnvStack) {
reader_change_cursor_selection_mode(mode);
}
fn handle_fish_cursor_end_mode_change(vars: &EnvStack) {
use crate::reader::CursorEndMode;
let inclusive = vars
.get(L!("fish_cursor_end_mode"))
.as_ref()
.map(|v| v.as_string())
.map(|v| v == "inclusive")
.unwrap_or(false);
let mode = if inclusive {
CursorEndMode::Inclusive
} else {
CursorEndMode::Exclusive
};
reader_change_cursor_end_mode(mode);
}
fn handle_autosuggestion_change(vars: &EnvStack) {
reader_set_autosuggestion_enabled(vars);
}

97
src/reader.rs
View file

@ -338,6 +338,12 @@ pub enum CursorSelectionMode {
Inclusive,
}
#[derive(Eq, PartialEq)]
pub enum CursorEndMode {
Exclusive,
Inclusive,
}
/// A mode for calling the reader_kill function.
enum Kill {
/// In this mode, the new string is appended to the current contents of the kill buffer.
@ -500,6 +506,7 @@ pub struct ReaderData {
/// The cursor selection mode.
cursor_selection_mode: CursorSelectionMode,
cursor_end_mode: CursorEndMode,
/// The selection data. If this is not none, then we have an active selection.
selection: Option<SelectionData>,
@ -814,7 +821,28 @@ pub fn reader_change_history(name: &wstr) {
pub fn reader_change_cursor_selection_mode(selection_mode: CursorSelectionMode) {
// We don't need to _change_ if we're not initialized yet.
if let Some(data) = current_data() {
if data.cursor_selection_mode == selection_mode {
return;
}
let invalidates_selection = data.selection.is_some();
data.cursor_selection_mode = selection_mode;
if invalidates_selection {
data.update_buff_pos(EditableLineTag::Commandline, None);
}
}
}
pub fn reader_change_cursor_end_mode(end_mode: CursorEndMode) {
// We don't need to _change_ if we're not initialized yet.
if let Some(data) = current_data() {
if data.cursor_end_mode == end_mode {
return;
}
let invalidates_end = data.selection.is_some();
data.cursor_end_mode = end_mode;
if invalidates_end {
data.update_buff_pos(EditableLineTag::Commandline, None);
}
}
}
@ -1027,6 +1055,7 @@ impl ReaderData {
history_pager_history_index_start: usize::MAX,
history_pager_history_index_end: usize::MAX,
cursor_selection_mode: CursorSelectionMode::Exclusive,
cursor_end_mode: CursorEndMode::Exclusive,
selection: Default::default(),
left_prompt_buff: Default::default(),
mode_prompt_buff: Default::default(),
@ -1159,13 +1188,24 @@ impl ReaderData {
}
/// Update the cursor position.
fn update_buff_pos(&mut self, elt: EditableLineTag, new_pos: Option<usize>) {
fn update_buff_pos(&mut self, elt: EditableLineTag, mut new_pos: Option<usize>) -> bool {
if self.cursor_end_mode == CursorEndMode::Inclusive {
let el = self.edit_line(elt);
let mut pos = new_pos.unwrap_or(el.position());
if !el.is_empty() && pos == el.len() {
pos = el.len() - 1;
if el.position() == pos {
return false;
}
new_pos = Some(pos);
}
}
if let Some(pos) = new_pos {
self.edit_line_mut(elt).set_position(pos);
}
if elt != EditableLineTag::Commandline {
return;
return true;
}
let buff_pos = self.command_line.position();
let target_char = if self.cursor_selection_mode == CursorSelectionMode::Inclusive {
@ -1174,7 +1214,7 @@ impl ReaderData {
0
};
let Some(selection) = self.selection.as_mut() else {
return;
return true;
};
if selection.begin <= buff_pos {
selection.start = selection.begin;
@ -1183,6 +1223,7 @@ impl ReaderData {
selection.start = buff_pos;
selection.stop = selection.begin + target_char;
}
true
}
}
@ -2025,7 +2066,7 @@ impl ReaderData {
}
rl::EndOfLine => {
let (_elt, el) = self.active_edit_line();
if el.position() == el.len() {
if self.is_at_end(el) {
self.accept_autosuggestion(true, false, MoveWordStyle::Punctuation);
} else {
loop {
@ -2040,7 +2081,9 @@ impl ReaderData {
}
position
};
self.update_buff_pos(self.active_edit_line_tag(), Some(position + 1));
if !self.update_buff_pos(self.active_edit_line_tag(), Some(position + 1)) {
break;
}
}
}
}
@ -2255,17 +2298,24 @@ impl ReaderData {
let yank_str = kill_yank();
self.insert_string(self.active_edit_line_tag(), &yank_str);
rls.yank_len = yank_str.len();
if self.cursor_end_mode == CursorEndMode::Inclusive {
let (_elt, el) = self.active_edit_line();
self.update_buff_pos(self.active_edit_line_tag(), Some(el.position() - 1));
}
}
rl::YankPop => {
if rls.yank_len != 0 {
let (elt, el) = self.active_edit_line();
let yank_str = kill_yank_rotate();
let new_yank_len = yank_str.len();
self.replace_substring(
elt,
el.position() - rls.yank_len..el.position(),
yank_str,
);
let bias = if self.cursor_end_mode == CursorEndMode::Inclusive {
1
} else {
0
};
let begin = el.position() + bias - rls.yank_len;
let end = el.position() + bias;
self.replace_substring(elt, begin..end, yank_str);
self.update_buff_pos(elt, None);
rls.yank_len = new_yank_len;
self.suppress_autosuggestion = true;
@ -2448,14 +2498,14 @@ impl ReaderData {
let (elt, el) = self.active_edit_line();
if self.is_navigating_pager_contents() {
self.select_completion_in_direction(SelectionMotion::East, false);
} else if el.position() != el.len() {
self.update_buff_pos(elt, Some(el.position() + 1));
} else {
} else if self.is_at_end(el) {
self.accept_autosuggestion(
/*full=*/ c != rl::ForwardSingleChar,
/*single=*/ c == rl::ForwardSingleChar,
MoveWordStyle::Punctuation,
);
} else {
self.update_buff_pos(elt, Some(el.position() + 1));
}
}
rl::BackwardKillWord | rl::BackwardKillPathComponent | rl::BackwardKillBigword => {
@ -2539,10 +2589,10 @@ impl ReaderData {
MoveWordStyle::Whitespace
};
let (elt, el) = self.active_edit_line();
if el.position() != el.len() {
self.move_word(elt, MoveWordDir::Right, /*erase=*/ false, style, false);
} else {
if self.is_at_end(el) {
self.accept_autosuggestion(false, false, style);
} else {
self.move_word(elt, MoveWordDir::Right, /*erase=*/ false, style, false);
}
}
rl::BeginningOfHistory | rl::EndOfHistory => {
@ -2836,7 +2886,9 @@ impl ReaderData {
if el.position() == 0 || el.text().as_char_slice()[el.position() - 1] == '\n' {
break elt;
}
self.update_buff_pos(elt, Some(el.position() - 1));
if !self.update_buff_pos(elt, Some(el.position() - 1)) {
break elt;
}
};
self.insert_char(elt, '\n');
let (elt, el) = self.active_edit_line();
@ -2849,7 +2901,9 @@ impl ReaderData {
{
break elt;
}
self.update_buff_pos(elt, Some(el.position() + 1));
if !self.update_buff_pos(elt, Some(el.position() + 1)) {
break elt;
}
};
self.insert_char(elt, '\n');
}
@ -3907,6 +3961,13 @@ impl ReaderData {
debounce_autosuggestions().perform_with_completion(performer, completion);
}
fn is_at_end(&self, el: &EditableLine) -> bool {
match self.cursor_end_mode {
CursorEndMode::Exclusive => el.position() == el.len(),
CursorEndMode::Inclusive => el.position() + 1 >= el.len(),
}
}
// Accept any autosuggestion by replacing the command line with it. If full is true, take the whole
// thing; if it's false, then respect the passed in style.
fn accept_autosuggestion(