force utf option

[zyxmon]

I have arm based nas (synology ds110j), that does not support locales but stores files in uft-8.
The sample program

#include <langinfo.h>
#include <locale.h>
#include <stdio.h>

int
main (int argc, char *argv[])
{
    setlocale (LC_ALL, "");
    printf ("%s\n", nl_langinfo (CODESET));
    return 0;
}

always returns ANSI_X3.4-1968

To make mc correctly work with utf-8 on this system I've made changes in 2 files:
1) In lib/strutil/strutil.c
I've changed

return (nl_langinfo (CODESET));

to

return "UTF8";

2) In lib\tty\tty-slang.c
I've changed

SLutf8_enable (-1); 

to

SLutf8_enable (1); 

These changes force utf-8 support in mc on my system.
I think these changes can be made an option in future releases in mc for such systems.

PS Many thanks to il.smind, who helped my to find this solution.

[andrew_b]

It's terrible. This durty hack cannot be applied in MC.

[angel_il]

need fix FAQ and maybe add patch into 'contrib'

[zyxmon]

Just a small remark on my patches. The correct fix for lib/strutil/strutil.c is

return "UTF-8";

These patches also helped to show nonascii chars on mc compiled for mipsel based router.

[andrew_b]

Again, if your OS supports UTF-8, but nl_langinfo (CODESET) doesn't return an "UTF-8" string, then OS itself should be fixed not MC.

[zyxmon]

The nl_langinfo on the mipsel router retured "ascii", so this patch was needed.

[andrew_b]

Replying to zyxmon:

The nl_langinfo on the mipsel router retured "ascii"

Yes. I'm talking about that. In any case, this bug in not in MC but in target OS. Do you agree with me?

so this patch was needed.

If your OS has some package management system, you can build the MC package with this OS-specific patch, can't you?

[zyxmon]

I totally agree with you, this is not a bug in MC. My last remark was just a small correction for the first post. The correct encoding name is "UTF-8". "UTF8" may be just an alias to "UTF-8".
These are OS specific patches.

[zyxmon]

I have added two patches for mc-4.7.5.1 just in case one has such an OS and needs them.
They will work for optware and openwrt package systems. Openwrt Makefile for mc needs a lot of changes for building mc-4.7.5.1 with slang2 for these patches to work.