export const char_width_lut = {
	'〃': 2,
}


//NOTE - this one only support posix newlines, this should be fixed later
export function tabs_to_spaces(text, tab_width=4) {
	let pending_column_index=0;

	let result = '';
	for (const char of text) {
		if (char == '\t') {
			const new_column_index = (Math.floor(pending_column_index / tab_width) + 1) * tab_width;
			result += ' '.repeat(new_column_index - pending_column_index);
			pending_column_index = new_column_index;
		} else {
			if (char.charCodeAt(0) === 10) {
				result += '\n';
				pending_column_index = 0;
/*			} else if (char.charCodeAt(0) < 32) {
				result += '�';
*/			} else {
				pending_column_index += (char_width_lut[char] ?? 1)
				result += char;
			}
		}
	}
	return result;

}