bug#13446: 24.2; Fix loop test in linum.el

[Nathan Trapuzzano]

Any reason why this hasn't been accepted?

Nathan Trapuzzano <nbtrap@nbtrap.com> writes:

> There is an incorrect loop test in linum.el that potentially applies an
> overlay to a line not visible in the window and thereby messes up the
> width of the overlays in the lines that are visible. The patch/merge
> directive is attached, and what follows is the commit message:
>
> -----
>
> Modify loop test in `linum-update-window'.
>
> `limit' is set to the position returned by `window-end'; this position
> is either on the last visible (logical) line in the buffer or is the
> first position on the line following the last visible line. In the
> former case, the loop variable never reaches the value of `limit', but
> in the latter case, an overlay is applied to a line that is not
> visible in the window. This can mess up the width of the overlay on
> the visible lines, especially if the width of the line number (as a
> string) of the line that's not visible is different from the width of
> the visible lines' line numbers.
> # Bazaar merge directive format 2 (Bazaar 0.90)
> # revision_id: nbtrap@nbtrap.com-20130115010121-h7kwjyr5kimowgml
> # target_branch: .
> # testament_sha1: a9154d3ede2b389220646bb8e9e708117d876d01
> # timestamp: 2013-01-14 20:03:26 -0500
> # base_revision_id: nbtrap@nbtrap.com-20130111013646-pn4xh5r94x5asomb
> # 
> # Begin patch
> === modified file 'lisp/linum.el'
> --- lisp/linum.el     2012-01-19 07:21:25 +0000
> +++ lisp/linum.el     2013-01-15 00:45:27 +0000
> @@ -151,7 +151,7 @@
>      (run-hooks 'linum-before-numbering-hook)
>      ;; Create an overlay (or reuse an existing one) for each
>      ;; line visible in this window, if necessary.
> -    (while (and (not (eobp)) (<= (point) limit))
> +    (while (and (not (eobp)) (< (point) limit))
>        (let* ((str (if fmt
>                        (propertize (format fmt line) 'face 'linum)
>                      (funcall linum-format line)))
>
> # Begin bundle
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> AACv794QIABkRTaajamQyGjTaRiFGgBMBBkwQhDmaVnH5r9hMFQyJ7EUzThiw4Ixc/mQVpexbPS2
> 9yLLTxaFbWvXcN2zcydOQxpD652acQC4g4Z96jI5BipgKAAiM5Zz45Kd/4u5IpwoSGxwX3wA