Method RuneUnder

internal/buffer/cursor.go:603–622

RuneUnder returns the rune under the given x position

(x int)

// RuneUnder returns the rune under the given x position
func (c *Cursor) RuneUnder(x int) rune {
	line := c.buf.LineBytes(c.Y)
	if len(line) == 0 || x >= util.CharacterCount(line) {
		return '\n'
	} else if x < 0 {
		x = 0
	}
	i := 0
	for len(line) > 0 {
		r, _, size := util.DecodeCharacter(line)
		line = line[size:]

		if i == x {
			return r
		}

		i++
	}
	return '\n'
}

func (c *Cursor) StoreVisualX() {
	c.LastVisualX = c.GetVisualX(false)