bug#22763: 25.1.50; Feature Request -- A faster method to obtain line number at position.

[Eli Zaretskii]

> Date: Sun, 07 Feb 2021 21:02:25 +0200
> From: Eli Zaretskii <eliz@gnu.org>
> Cc: 22763@debbugs.gnu.org, esq@lawlist.com, monnier@iro.umontreal.ca
> 
> This benchmark is not very fair.  For starters, 1 thousands of
> ChangeLog.11's size is on line 31 of the file, so you have just 31
> lines to count.  And those lines are quite short.

Oops, I now see that you insert the file 1000 times, so it's 31
thousand lines.  Still, not a very large number, and the lines are
very short.