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| From: | Stefan Monnier |
| Subject: | Re: creating a function that works for active region or whole buffer |
| Date: | Mon, 28 Jan 2013 09:02:10 -0500 |
| User-agent: | Gnus/5.13 (Gnus v5.13) Emacs/24.3.50 (gnu/linux) |
> (setq current-block-start-line (line-number-at-pos
> (region-beginning) )
> current-block-end-line (line-number-at-pos (region-end) ) )
> ;; ...else use the whole buffer
> (setq current-block-start-line (line-number-at-pos (point-min) )
> current-block-end-line (line-number-at-pos (point-max) ) ) )
goto-line and line-number-at-pos are expensive operations that count
(and re-count and re-re-count every time) the number of LF chars from
the beginning of the buffer.
Stefan
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