Resolve conflicts between prompt/picker bindings (#1792)

Currently, the picker's re-using a few bindings which are also present
in the prompt. This causes some editing behaviours to not function on
the picker.

**Ctrl + k** and **Ctrl + j**
This should kill till the end of the line on prompt, but is overridden
by the picker for scrolling. Since there are redundancies (`Ctrl + p`,
`Ctrl + n`), we can remove it from picker.

**Ctrl + f** and **Ctrl + b**
This are used by the prompt for back/forward movement. We could modify
it to be Ctrl + d and Ctrl + u, to match the `vim` behaviour.

1 files changed, 4 insertions, 4 deletions

diff --git a/helix-term/src/ui/picker.rs b/helix-term/src/ui/picker.rs
index 42c42284..dec59c89 100644
--- a/helix-term/src/ui/picker.rs
+++ b/helix-term/src/ui/picker.rs
@@ -498,16 +498,16 @@ impl<T: 'static> Component for Picker<T> {
         })));
 
         match key_event.into() {
-            shift!(Tab) | key!(Up) | ctrl!('p') | ctrl!('k') => {
+            shift!(Tab) | key!(Up) | ctrl!('p') => {
                 self.move_by(1, Direction::Backward);
             }
-            key!(Tab) | key!(Down) | ctrl!('n') | ctrl!('j') => {
+            key!(Tab) | key!(Down) | ctrl!('n') => {
                 self.move_by(1, Direction::Forward);
             }
-            key!(PageDown) | ctrl!('f') => {
+            key!(PageDown) | ctrl!('d') => {
                 self.page_down();
             }
-            key!(PageUp) | ctrl!('b') => {
+            key!(PageUp) | ctrl!('u') => {
                 self.page_up();
             }
             key!(Home) => {