Gtk.TextView.prototype.scroll_to_mark

function scroll_to_mark(mark:Gtk.TextMark, within_margin:Number, use_align:Boolean, xalign:Number, yalign:Number):void {
    // Gjs wrapper for gtk_text_view_scroll_to_mark()
}

Scrolls text_view so that mark is on the screen in the position indicated by xalign and yalign. An alignment of 0.0 indicates left or top, 1.0 indicates right or bottom, 0.5 means center. If use_align is false, the text scrolls the minimal distance to get the mark onscreen, possibly not scrolling at all. The effective screen for purposes of this function is reduced by a margin of size within_margin.