From: Stefan Monnier <monnier@iro.umontreal.ca>
To: Noam Postavsky <npostavs@gmail.com>
Cc: Eli Zaretskii <eliz@gnu.org>, Emacs developers <emacs-devel@gnu.org>
Subject: Re: string_char_to_byte and string_byte_to_char micro-optimisation
Date: Sun, 16 Jun 2019 07:17:01 -0400 [thread overview]
Message-ID: <jwva7ehbx1j.fsf-monnier+emacs@gnu.org> (raw)
In-Reply-To: <CAM-tV--uc9=KH68UYF91CPCg2PAPRkHJbGOe5_MUQZc0z-H_hA@mail.gmail.com> (Noam Postavsky's message of "Sat, 15 Jun 2019 07:11:47 -0400")
>> be noticeably slowed down by charpos<->bytepos conversion in
>> "pathological" cases where we `start` in the middle of a longish string
>> and we immediately find a short match.
> Would this include cases where you iterate through string-match
> results in a loop, incrementing the `start` argument each time, as in
> replace-regexp-in-string?
Yes, that's exactly the case I had in mind.
Stefan
next prev parent reply other threads:[~2019-06-16 11:17 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-14 12:37 string_char_to_byte and string_byte_to_char micro-optimisation Robert Pluim
2019-06-14 16:53 ` Paul Eggert
2019-06-14 19:00 ` Eli Zaretskii
2019-06-14 20:11 ` Stefan Monnier
2019-06-15 6:22 ` Eli Zaretskii
2019-06-15 7:48 ` Stefan Monnier
2019-06-15 11:11 ` Noam Postavsky
2019-06-16 11:17 ` Stefan Monnier [this message]
2019-06-17 9:37 ` Robert Pluim
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