bug#13810: 24.3.50; Docstring of `newline' is confusing

[Lars Ingebrigtsen]

Stephen Berman <stephen.berman@gmx.net> writes:

> Your report prompted me to check the code of newline and I think I found
> a bug: a comment says, "If the newline leaves the previous line blank,
> and we have a left margin, delete that from the blank line", but the
> code only checks whether the previous line consists of a *single* space
> or tab, so if there's more than one space or tab and the line is
> otherwise blank, these won't be deleted.  I doubt this asymmetry is
> intended, so at least the following patch should be made:

Thanks; I've now applied your patch to Emacs 28.

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