-width is inaccurate

[Orum]

If I use autodetection (the default), or specify my -width to the actual terminal width, duf will wrap before it uses the full width of the terminal. However, if I specify a width much larger than the terminal, the output is fine and still (in this case) fits within the terminal.

In other words, the width seems to be internally scaled to a smaller value than the terminal actually is.

[eciancio]

The first column's max width is explicitly set to be .4 * tableWidth. So It might wrap around before the table uses the full width of the terminal because the column has used its full WidthMax.

duf/table.go

Lines 58 to 61 in dac0c7d

	twidth := tableWidth(cols, tab.Style().Options.SeparateColumns)
	tab.SetColumnConfigs([]table.ColumnConfig{
	{Number: 1, Hidden: !inColumns(cols, 1), WidthMax: int(float64(twidth) * 0.4)},

twidth is calculated using *width so when you specify -width to be larger, twidth gets larger so does the column's WithMax

duf/table.go

Lines 225 to 238 in dac0c7d

	func tableWidth(cols []int, separators bool) int {
	var sw int
	if separators {
	sw = 1
	}
	twidth := int(*width)
	for i := 0; i < len(columns); i++ {
	if inColumns(cols, i+1) {
	twidth -= 2 + sw + columns[i].Width
	}
	}
	return twidth

[yermulnik]

Observing the same behavior. Forcing duf to go beyond terminal width makes output smoother: