mech-dump --headers forces Latin1 on local files

[jidanni]

There is absolutely no way to get mech-dump to use the correct character
set for UTF-8 on local files.

$ wget jidanni.org
$ mech-dump --headers index.html | grep Title
Title: [...gobbledygook...] Dan Jacobson

[jidanni]

Apparently, as no Title, comes with HTTP headers, which are expected to all be in ASCII,
so when Title is grabbed as a bonus for local files, nobody remembered that they might not be ASCII.

Let's have another look here after dumping parts of website https://jidanni.org/ onto local disk,
$ cd jidanni.org/
02:55 jidanni.org$ mech-dump --headers index.html
Content-Length: 3495
Content-Type: text/html
Last-Modified: Thu, 09 Jul 2020 12:59:11 GMT
Client-Date: Sun, 04 Oct 2020 18:56:05 GMT
Title: ç©ä¸¹å°¼ Dan Jacobson
X-Meta-Charset: utf-8
X-Meta-Viewport: width=device-width
02:56 jidanni.org$ mech-dump --headers location/paper_mailbox.html
Content-Language: zh-tw
Content-Length: 2109
Content-Type: text/html
Last-Modified: Mon, 27 Jan 2020 21:41:29 GMT
Client-Date: Sun, 04 Oct 2020 18:56:17 GMT
Title: ç´ä¿¡ç®±èªªæ Paper mailbox instructions
X-Meta-Viewport: width=device-width

Anyway, we see there are tons of clues for mech-dump to pick up on: X-Meta-Charset, etc. But it misses them.
$ mech-dump --version
2.01

[simbabque]

I can't figure out where this title header is added, but I am pretty sure at that point the encoding is broken. The response knows this is utf-8 and generally mech-dump turns STDOUT into utf8 anyway.