* Efficiently getting the line at point
@ 2009-09-18 14:30 Nordlöw
2009-09-18 15:02 ` Eli Zaretskii
0 siblings, 1 reply; 2+ messages in thread
From: Nordlöw @ 2009-09-18 14:30 UTC (permalink / raw)
To: help-gnu-emacs
How do I efficiently get the current line at a given position?
Is line-number-at-pos() the best candidate?
This function in turn calls count-lines().
Why? --- I thought Emacs had an internal O(1) lookup table for the
positions of line beginnings of a buffer or file.
Thanks in advance,
Per Nordlöw
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: Efficiently getting the line at point
2009-09-18 14:30 Efficiently getting the line at point Nordlöw
@ 2009-09-18 15:02 ` Eli Zaretskii
0 siblings, 0 replies; 2+ messages in thread
From: Eli Zaretskii @ 2009-09-18 15:02 UTC (permalink / raw)
To: help-gnu-emacs
> From: =?ISO-8859-1?Q?Nordl=F6w?= <per.nordlow@gmail.com>
> Date: Fri, 18 Sep 2009 07:30:19 -0700 (PDT)
>
> I thought Emacs had an internal O(1) lookup table for the positions
> of line beginnings of a buffer or file.
It doesn't. line-number-at-pos is what you are looking for.
^ permalink raw reply [flat|nested] 2+ messages in thread
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2009-09-18 14:30 Efficiently getting the line at point Nordlöw
2009-09-18 15:02 ` Eli Zaretskii
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