Subject: Re: bug#46933: Possible bugs in filepos-to-bufferpos / bufferpos-to-filepos

From: Eli Zaretskii <[email-masked]>
Date: Thu, 01 Apr 2021 18:25:24 +0300

> From: handa <[email-masked]>
> Cc: [email-masked], [email-masked]
> Date: Fri, 02 Apr 2021 00:14:02 +0900
> 
> By the way, what is the intention of filepos-to-bufferpos?  Why that
> function was introduce?

The original (and so far the only) use case was an Info manual
separated into several files, where the tag table at the end of the
main file specifies offsets in bytes.  See the function
Info-find-node-2 in info.el.