Eli, does this performance degenerate for for really large files? Like 25k line files? On Jul 7, 2017 6:50 AM, "Eli Zaretskii" wrote: > > Date: Fri, 07 Jul 2017 12:47:35 +0300 > > From: Eli Zaretskii > > Cc: emacs-devel@gnu.org > > > > I timed the current implementation at 0.2 msec, in an optimized build; > ^^^^^^^^^ > Sorry, that should have been "unoptimized". > >