Re: dired-do-find-regexp failure with latin-1 encoding

[Eli Zaretskii <eliz@gnu.org>]

> From: Dmitry Gutov <dgutov@yandex.ru>
> Cc: stephen.berman@gmx.net, emacs-devel@gnu.org
> Date: Sun, 29 Nov 2020 02:49:25 +0200
> 
> On 28.11.2020 23:04, Dmitry Gutov wrote:
> > or latin-1 (AND the current system locale matches that encoding), the 
> > search should work fine across such files in different encodings, and 
> > without 'C-x RET c'
> 
> Correction: only utf-8 and utf-16 detection is automatic. latin-1 needs 
> explicit arguments '-E latin-1' passed to rg.
> 
> The official recommended workaround is to use a --pre flag which is 
> similar to what Stephen did originally by inserting 'iconv ...' in the 
> shell command string: https://github.com/BurntSushi/ripgrep/issues/746

How can --pre help?  It still cannot easily support different
encodings in the same command, right?

> I suppose if we really wanted, we could insert some custom program that 
> chooses what to 'iconv' with, but that would be slower, of course. But 
> it could work with Grep, too.

It would be brittle, unless that program actually reads the entire
file (which will be slow).