package glyph

import "github.com/mattn/go-runewidth"

// Width returns the terminal column width of a rune.
// Tabs use a fixed width of 8 columns.
// TODO: handle Unicode marks.
func Width(r rune) int {
	switch r {
	case '\t':
		return 8
	default:
		return runewidth.RuneWidth(r)
	}
}