(fill-move-to-break-point): Skip white space
_before_ checking to see if we're hitting the margin. (fill-region-as-paragraph): Don't fiddle with the undo-list any more: it's now done by the C primitives. Don't use narrowing. Reorganize the line-breaking part of the code to simplify the control flow and make it work in the absence of narrowing. (fill-region): Don't use narrowing.
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