feat(term): uniformize word-wise movement and deletion (#2500)

Ctrl-based shortcuts are common in numerous applications.

This change:
- Adds Ctrl+{Left/Right/Backspace/Delete} for word-wise movement/deletion in prompt, picker, …
- Removes Alt-Left and Alt-Right in prompt, picker, …
- Adds Alt-Delete in insert mode for forward word deletion

In some terminals, Alt-Backspace might not work because it is ambigous.
See: https://github.com/helix-editor/helix/pull/2193#issuecomment-1105042501
Hence, Alt alternative is not removed.

3 files changed, 6 insertions, 5 deletions

diff --git a/helix-term/src/application.rs b/helix-term/src/application.rs
index d3899075..f4f0876c 100644
--- a/helix-term/src/application.rs
+++ b/helix-term/src/application.rs
@@ -350,7 +350,7 @@ impl Application {
     }
 
     fn refresh_config(&mut self) {
-        let config = Config::load(helix_loader::config_file()).unwrap_or_else(|err| {
+        let config = Config::load_default().unwrap_or_else(|err| {
             self.editor.set_error(err.to_string());
             Config::default()
         });
diff --git a/helix-term/src/keymap/default.rs b/helix-term/src/keymap/default.rs
index 9b144758..b8c1a400 100644
--- a/helix-term/src/keymap/default.rs
+++ b/helix-term/src/keymap/default.rs
@@ -351,6 +351,7 @@ pub fn default() -> HashMap<Mode, Keymap> {
         "C-w" => delete_word_backward,
         "A-backspace" => delete_word_backward,
         "A-d" => delete_word_forward,
+        "A-del" => delete_word_forward,
         "C-s" => commit_undo_checkpoint,
 
         "left" => move_char_left,
diff --git a/helix-term/src/ui/prompt.rs b/helix-term/src/ui/prompt.rs
index 55b08032..36ee62c3 100644
--- a/helix-term/src/ui/prompt.rs
+++ b/helix-term/src/ui/prompt.rs
@@ -477,14 +477,14 @@ impl Component for Prompt {
                 (self.callback_fn)(cx, &self.line, PromptEvent::Abort);
                 return close_fn;
             }
-            alt!('b') | alt!(Left) => self.move_cursor(Movement::BackwardWord(1)),
-            alt!('f') | alt!(Right) => self.move_cursor(Movement::ForwardWord(1)),
+            alt!('b') | ctrl!(Left) => self.move_cursor(Movement::BackwardWord(1)),
+            alt!('f') | ctrl!(Right) => self.move_cursor(Movement::ForwardWord(1)),
             ctrl!('b') | key!(Left) => self.move_cursor(Movement::BackwardChar(1)),
             ctrl!('f') | key!(Right) => self.move_cursor(Movement::ForwardChar(1)),
             ctrl!('e') | key!(End) => self.move_end(),
             ctrl!('a') | key!(Home) => self.move_start(),
-            ctrl!('w') => self.delete_word_backwards(cx),
-            alt!('d') => self.delete_word_forwards(cx),
+            ctrl!('w') | alt!(Backspace) | ctrl!(Backspace) => self.delete_word_backwards(cx),
+            alt!('d') | alt!(Delete) | ctrl!(Delete) => self.delete_word_forwards(cx),
             ctrl!('k') => self.kill_to_end_of_line(cx),
             ctrl!('u') => self.kill_to_start_of_line(cx),
             ctrl!('h') | key!(Backspace) => {