Method Retab

internal/buffer/buffer.go:1265–1291

Retab changes all tabs to spaces or vice versa

()

// Retab changes all tabs to spaces or vice versa
func (b *Buffer) Retab() {
	toSpaces := b.Settings["tabstospaces"].(bool)
	tabsize := util.IntOpt(b.Settings["tabsize"])

	for i := 0; i < b.LinesNum(); i++ {
		l := b.LineBytes(i)

		ws := util.GetLeadingWhitespace(l)
		if len(ws) != 0 {
			if toSpaces {
				ws = bytes.ReplaceAll(ws, []byte{'\t'}, bytes.Repeat([]byte{' '}, tabsize))
			} else {
				ws = bytes.ReplaceAll(ws, bytes.Repeat([]byte{' '}, tabsize), []byte{'\t'})
			}
		}

		l = bytes.TrimLeft(l, " \t")

		b.Lock()
		b.lines[i].data = append(ws, l...)
		b.Unlock()

		b.MarkModified(i, i)
	}

	b.setModified()
}

// ParseCursorLocation turns a cursor location like 10:5 (LINE:COL)
// into a loc