Re: "add -p" + filenames with UTF-8 multibyte characters = "No changes"

On 2009-02-15 22:36 (-0500), Jeff King wrote:

I am not opposed to setting this as a default, but I think there may
be some encoding issues to be dealt with. At the very least,
format-patch generates messages without a content-type header. E.g.,:

But what is the right encoding to specify? We can guess that it is
whatever the commit message is in (defaulting to utf-8). It is by no
means correct, but it would probably work pretty well in practice.

I have a small script which adds/rewrites MIME headers. It defaults to
UTF-8/8bit:

    #!/bin/sh

    charset="${1:-UTF-8}"
    encoding="${2:-8bit}"

    formail -I "MIME-Version: 1.0" \
            -I "Content-Type: text/plain; charset=$charset" \
            -I "Content-Transfer-Encoding: $encoding" \
            -s

I have used the script this way:

    git format-patch --stdout [...] | add-mime-headers | \
        formail -s sh -c 'cat >$FILENO.patch'

It may be difficult and unreliable to try to detect the encoding of file
content so maybe "git format-patch" could be taught an option like
"--charset=<charset>". (And perhaps also a configuration variable.) That
would just write MIME headers (charset) as the user wishes.