stop using any nightly features (ill miss u const traits)

src/buffer.rs

@@ -1,9 +1,8 @@
-use core::slice::GetDisjointMutIndex;
 use std::{collections::HashSet, fs::File, io::{self, Read}, path::PathBuf};
 use crossterm::event::KeyEvent;
 use ratatui::{style::Stylize, text::Span};
 use serde::{Deserialize, Serialize};
-use crate::{BYTES_PER_LINE, action::{Action, AppAction}, buffer::actions::bytes_to_nat, config::Config, cursor::Cursor, edit_action::EditAction, popup::Popup, window_size::WindowSize};
+use crate::{BYTES_PER_LINE, action::{Action, AppAction}, buffer::actions::bytes_to_nat, config::Config, cursor::Cursor, edit_action::EditAction, popup::Popup, utilities::IsOverlapping, window_size::WindowSize};
 
 mod widget;
 mod actions;

src/buffer/actions.rs

@@ -1,4 +1,4 @@
-use std::{cmp::min, collections::hash_set::Entry, convert::identity, fs::File, io::Write, iter, mem::{replace, swap}};
+use std::{cmp::min, convert::identity, fs::File, io::Write, iter, mem::{replace, swap}};
 use itertools::Itertools;
 use ratatui::{style::{Color, Stylize}, text::Span};
 use crate::{BYTES_OF_PADDING, BYTES_PER_LINE, LINES_OF_PADDING, action::BufferAction, buffer::{Buffer, InspectionStatus, Mode, PartialAction}, cursor::Cursor, edit_action::EditAction, popup::Popup, utilities::{Floorable, SaturatingSubtract}, window_size::WindowSize};
@@ -467,20 +467,18 @@ impl Buffer {
 	}
 	
 	fn toggle_mark(&mut self) {
-		match self.marks.entry(self.primary_cursor.lower_bound()) {
+		if !self.marks.insert(self.primary_cursor.lower_bound()) {
-			Entry::Occupied(occupied_entry) => { occupied_entry.remove(); },
+			self.marks.remove(&self.primary_cursor.lower_bound());
-			Entry::Vacant(vacant_entry) => vacant_entry.insert(),
 		}
 		
 		for cursor in &self.cursors {
-			match self.marks.entry(cursor.lower_bound()) {
+			if !self.marks.insert(cursor.lower_bound()) {
-				Entry::Occupied(occupied_entry) => { occupied_entry.remove(); },
+				self.marks.remove(&cursor.lower_bound());
-				Entry::Vacant(vacant_entry) => vacant_entry.insert(),
 			}
 		}
 	}
 	
-	const fn align_view_center(&mut self, window_size: WindowSize) {
+	fn align_view_center(&mut self, window_size: WindowSize) {
 		let half_a_screen = window_size.visible_byte_count() / 2;
 		
 		self.scroll_position = self.primary_cursor.head
@@ -499,7 +497,7 @@ impl Buffer {
 			.min(self.max_contents_index().floored_to_the_nearest(BYTES_PER_LINE));
 	}
 	
-	const fn align_view_top(&mut self, window_size: WindowSize) {
+	fn align_view_top(&mut self, window_size: WindowSize) {
 		self.scroll_position = self.primary_cursor.head
 			.floored_to_the_nearest(BYTES_PER_LINE)
 			.saturating_sub(self.top_padding(window_size));
@@ -676,7 +674,7 @@ fn inspect(selection: &[u8]) -> Vec<Span<'static>> {
 	
 	let utf8 = str::from_utf8(selection).ok()
 		.filter(|_| selection.len() != 1)
-		.map(|utf8| utf8.trim_suffix('\0'))
+		.map(|utf8| utf8.trim_end_matches('\0'))
 		.filter(|utf8| !utf8.contains(is_illegal_control_character))
 		.map(|utf8| Span::from(format!("\"{utf8}\"")).red());
 	
@@ -830,7 +828,7 @@ impl Buffer {
 		}
 	}
 	
-	pub const fn clamp_screen_to_contents(&mut self, window_size: WindowSize) {
+	pub fn clamp_screen_to_contents(&mut self, window_size: WindowSize) {
 		let max_scroll_position = self.max_contents_index()
 			.floored_to_the_nearest(BYTES_PER_LINE)
 			.saturating_sub(Self::bottom_padding(window_size));
@@ -868,7 +866,11 @@ pub fn bytes_to_nat(bytes: &[u8]) -> Option<u64> {
 		.rev() // little-endian
 		.skip_while(|&&byte| byte == 0)
 		.try_fold(u64::default(), |result, &byte| {
-			Some(result.shl_exact(8)? | u64::from(byte))
+			if result.leading_zeros() < 8 {
+				None
+			} else {
+				Some((result << 8) | u64::from(byte))
+			}
 		})
 }
 

src/cursor/actions.rs

@@ -93,7 +93,7 @@ impl Cursor {
 		}
 	}
 	
-	pub const fn goto_line_start(&mut self) {
+	pub fn goto_line_start(&mut self) {
 		self.extend_line_start();
 		self.collapse();
 	}
@@ -108,12 +108,12 @@ impl Cursor {
 		self.collapse();
 	}
 	
-	pub const fn goto_file_end(&mut self, max: usize) {
+	pub fn goto_file_end(&mut self, max: usize) {
 		self.extend_file_end(max);
 		self.collapse();
 	}
 	
-	pub const fn extend_line_start(&mut self) {
+	pub fn extend_line_start(&mut self) {
 		self.head.floor_to_the_nearest(BYTES_PER_LINE);
 	}
 	
@@ -128,7 +128,7 @@ impl Cursor {
 		self.head %= BYTES_PER_LINE;
 	}
 	
-	pub const fn extend_file_end(&mut self, max: usize) {
+	pub fn extend_file_end(&mut self, max: usize) {
 		self.head += previous_multiple_of(BYTES_PER_LINE, max + 1 - self.head);
 		
 	}
@@ -156,7 +156,7 @@ impl Cursor {
 		}
 	}
 	
-	pub const fn move_previous_word_start(&mut self) {
+	pub fn move_previous_word_start(&mut self) {
 		if self.head == 0 { return; }
 		
 		self.collapse();
@@ -188,7 +188,7 @@ impl Cursor {
 		}
 	}
 	
-	pub const fn extend_previous_word_start(&mut self) {
+	pub fn extend_previous_word_start(&mut self) {
 		if self.head == 0 { return; }
 		
 		if self.head.is_multiple_of(4) { // at the beginning of a word
@@ -236,7 +236,7 @@ impl Cursor {
 	}
 }
 
-const fn previous_multiple_of(multiple: usize, number: usize) -> usize {
+fn previous_multiple_of(multiple: usize, number: usize) -> usize {
 	number.saturating_sub(1).floored_to_the_nearest(multiple)
 }
 

src/main.rs

@@ -1,11 +1,6 @@
 #![warn(clippy::pedantic, clippy::nursery)]
 #![allow(clippy::cast_possible_truncation)]
 #![allow(clippy::enum_glob_use)]
-#![feature(get_disjoint_mut_helpers)]
-#![feature(exact_bitshifts)]
-#![feature(hash_set_entry)]
-#![feature(trim_prefix_suffix)]
-#![feature(const_trait_impl)]
 
 use arguments::Arguments;
 use clap::Parser;

src/utilities.rs

@@ -3,9 +3,11 @@ mod empty_span;
 mod custom_greys;
 mod floor_to_the_nearest;
 mod saturating_subtract;
+mod is_overlapping;
 
 pub use cardinality::HasCardinality;
 pub use empty_span::empty_span;
 pub use custom_greys::CustomGreys;
 pub use floor_to_the_nearest::Floorable;
 pub use saturating_subtract::SaturatingSubtract;
+pub use is_overlapping::IsOverlapping;

src/utilities/floor_to_the_nearest.rs

@@ -1,10 +1,10 @@
 
-pub const trait Floorable {
+pub trait Floorable {
 	fn floor_to_the_nearest(&mut self, step: Self);
 	fn floored_to_the_nearest(self, step: Self) -> Self;
 }
 
-const impl Floorable for usize {
+impl Floorable for usize {
 	fn floor_to_the_nearest(&mut self, step: Self) {
 		*self -= *self % step;
 	}

src/utilities/is_overlapping.rs

@@ -0,0 +1,11 @@
+use std::ops::RangeInclusive;
+
+pub trait IsOverlapping {
+	fn is_overlapping(&self, other: &Self) -> bool;
+}
+
+impl IsOverlapping for RangeInclusive<usize> {
+	fn is_overlapping(&self, other: &Self) -> bool {
+		self.contains(other.start()) || self.contains(other.end())
+	}
+}