xpath return all non-blank text nodes not descendant of `a`, `style` or `script`

Question

What expression would select all text nodes which are:

• not blank
• not inside a, or script o

Answer 1

Use:

//*[not(self::a or self::script or self::style)]/text()[normalize-space()]

Not only is this expression shorter than the one in the currently accepted answer, but it also may be much more efficient.

Do note that the expression doesnt use any (back/up)-ward axes at all.