fix: avoid duplicate key input on windows (#203).

On Windows, key-states like press/release/repeat are made available
separately, which means we should avoid responding to key-releases
as it would incorrectly double the actual user inputs.

src/interactive/app/eventloop.rs

@@ -6,7 +6,7 @@ use crate::interactive::{
     SortMode,
 };
 use anyhow::Result;
-use crosstermion::crossterm::event::{KeyCode, KeyEvent, KeyModifiers};
+use crosstermion::crossterm::event::{KeyCode, KeyEvent, KeyEventKind, KeyModifiers};
 use crosstermion::input::{input_channel, Event};
 use dua::{
     traverse::{EntryData, Traversal},
@@ -115,7 +115,7 @@ impl AppState {
 
         for event in events {
             let key = match event {
-                Event::Key(key) => key,
+                Event::Key(key) if key.kind != KeyEventKind::Release => key,
                 Event::Resize(_, _) => refresh_key(),
                 _ => continue,
             };

src/interactive/widgets/glob.rs

@@ -1,5 +1,6 @@
 use anyhow::{anyhow, Context, Result};
 use bstr::BString;
+use crosstermion::crossterm::event::KeyEventKind;
 use crosstermion::input::Key;
 use dua::traverse::{Tree, TreeIndex};
 use petgraph::Direction;
@@ -37,6 +38,9 @@ pub struct GlobPane {
 impl GlobPane {
     pub fn process_events(&mut self, key: Key) {
         use crosstermion::crossterm::event::KeyCode::*;
+        if key.kind == KeyEventKind::Release {
+            return;
+        }
         match key.code {
             Char(to_insert) => {
                 self.enter_char(to_insert);

src/interactive/widgets/help.rs

@@ -1,6 +1,6 @@
 use crate::interactive::CursorDirection;
 pub use crosstermion::crossterm::event::KeyCode::*;
-use crosstermion::crossterm::event::KeyModifiers;
+use crosstermion::crossterm::event::{KeyEventKind, KeyModifiers};
 use crosstermion::input::Key;
 use std::{borrow::Borrow, cell::RefCell};
 use tui::{
@@ -36,6 +36,9 @@ fn margin(r: Rect, margin: u16) -> Rect {
 
 impl HelpPane {
     pub fn process_events(&mut self, key: Key) {
+        if key.kind == KeyEventKind::Release {
+            return;
+        }
         match key.code {
             Char('H') => self.scroll_help(CursorDirection::ToTop),
             Char('G') => self.scroll_help(CursorDirection::ToBottom),

src/interactive/widgets/mark.rs

@@ -3,7 +3,7 @@ use crate::interactive::{
     app::tree_view::TreeView, fit_string_graphemes_with_ellipsis, widgets::entry_color,
     CursorDirection,
 };
-use crosstermion::crossterm::event::KeyModifiers;
+use crosstermion::crossterm::event::{KeyEventKind, KeyModifiers};
 use crosstermion::input::Key;
 use dua::{traverse::TreeIndex, ByteFormat};
 use itertools::Itertools;
@@ -117,6 +117,9 @@ impl MarkPane {
     pub fn process_events(mut self, key: Key) -> Option<(Self, Option<MarkMode>)> {
         use crosstermion::crossterm::event::KeyCode::*;
         let action = None;
+        if key.kind == KeyEventKind::Release {
+            return Some((self, action));
+        }
         match key.code {
             Char('r') if key.modifiers.contains(KeyModifiers::CONTROL) => {
                 return Some(self.prepare_deletion(MarkMode::Delete))