Add goto_first_nonwhitespace + impl insert_at_line_start and end

src/actions.rs

@@ -33,6 +33,7 @@ pub fn load_actions() -> HashMap<String, Action> {
         ("page_down", page_down),
         ("goto_line_start", goto_line_start),
         ("goto_line_end", goto_line_end),
+        ("goto_first_nonwhitespace", goto_first_nonwhitespace),
         ("command_mode", command_mode),
         ("normal_mode", normal_mode),
         ("visual_mode", visual_mode),
@@ -88,6 +89,10 @@ pub fn goto_line_end(state: &mut State) {
     state.cursor = state.buffer.cursor_at_line_end(state.cursor.line);
 }
 
+pub fn goto_first_nonwhitespace(state: &mut State) {
+    state.cursor = state.buffer.cursor_at_first_nonwhitespace(state.cursor.line);
+}
+
 pub fn command_mode(state: &mut State) {
     state.mode = Mode::Command(Default::default());
 }
@@ -117,11 +122,13 @@ pub fn append_mode(state: &mut State) {
 }
 
 pub fn insert_at_line_start(state: &mut State) {
-    state.set_error("insert_at_line_start is unimplemented");
+    goto_first_nonwhitespace(state);
+    insert_mode(state);
 }
 
 pub fn insert_at_line_end(state: &mut State) {
-    state.set_error("insert_at_line_end is unimplemented");
+    goto_line_end(state);
+    insert_mode(state);
 }
 
 pub fn open_below(state: &mut State) {

src/buffer.rs

@@ -21,11 +21,11 @@ use std::io::Write;
 use std::ops::Range;
 use std::sync::Arc;
 
-use crossterm::{cursor, ExecutableCommand, QueueableCommand};
+use crossterm::{cursor, QueueableCommand};
 use parking_lot::Mutex;
 use ropey::Rope;
 use syntect::easy::ScopeRangeIterator;
-use syntect::parsing::{BasicScopeStackOp, ParseState, Scope, ScopeStack, SyntaxSet};
+use syntect::parsing::{BasicScopeStackOp, ParseState, ScopeStack, SyntaxSet};
 
 use crate::theme::{Style, StyleStore};
 use crate::{Cursor, Direction};
@@ -274,11 +274,12 @@ impl Buffer {
     pub fn cursor_at_first_nonwhitespace(&self, line: usize) -> Cursor {
         if let Some(line_slice) = self.text.get_line(line) {
             let mut column = 0;
-            for c in line_slice.chars().reversed() {
-                column += 1;
+            for c in line_slice.chars() {
                 if !c.is_whitespace() {
                     break;
                 }
+
+                column += 1;
             }
 
             Cursor { line, column }

src/keybinds.rs

@@ -53,6 +53,7 @@ impl Default for Keybinds {
         let goto_keys = &[
             (Char('h'), goto_line_start as Action),
             (Char('l'), goto_line_end),
+            (Char('s'), goto_first_nonwhitespace),
         ];
 
         let normalish_keys = [