Re: rules in mc.ext

[Jörg Thümmler <listen vordruckleitverlag de>]

Am 16.09.22 um 06:31 schrieb Fourhundred Thecat via mc:
> Hello,
>
> can I change the default internal viewer to something else (less)? I
> think I could change each line individually:
>
>    View=%view{ascii} mediainfo %f
>
> to
>
>    View=mediainfo %f | less
>
> but I would rather change this once, globally.
>
> Also, I am confused how the include directive works in mc.ext. As it
> says in mc.ext, the rules are applied from top to bottom. Therefore, I
> want to have exact, specific rules at the top
>
>    shell/i/.tar.xz
>
> and vague, "dirty-hack" rules as low as possible, ie
>
>    type/^PC\ bitmap
>
> I also think calling external command "file" is expensive, so I don't
> want to call it too early, when simple regex rule is sufficient.
>
> Anyways, so I have relatively early:
>
>    shell/i/.gif
>          Include=image
>
>    include/image
>          Open=([ "$DISPLAY" ] && gpicview %f >/dev/null 2>&1 &)
>          View=%view{ascii} file %f
>
> and at the bottom, I have:
>
>    type/^PC\ bitmap
>          Include=image
>
> but this does not work because this last rule is after "include/image".
> I thought, "include/image" just defines what "Include=image" means. But
> apparently it must be right after I used "Include=image" ?
>
> Lastly, is there some optimization in processing this decision tree?
> Lets say I have 100 rules in mc.ext. And I press F3 on file.foo. MC goes
> from top to bottom, testing each rule. If there are 50 rules "type/",
> does it mean MC calls the file command 50 times (if it does not find
> match earlier) ?
>
> PS: I am using my original mc.ext file, which I kept over upgrades. I
> noticed the format has changed, and it now uses scripts stored in
> /usr/lib/mc/ext.d/:
>
>    View=%view{ascii} /usr/lib/mc/ext.d/archive.sh view tar.xz
>
> I would like to stick with my original format.
>
> thank you,
> _______________________________________________
> mc mailing list
> https://mail.gnome.org/mailman/listinfo/mc

Hi,

you can change viewer and editor globally:

press F9 - goto Options - Configuration and unselect "use internal 
viewer" (and if you want, "internal editor" as well). MC will use now, 
whats globally set for your system/user. Less (and vi(m) as editor i assume.

If you set and export VIEWER and EDITOR env variables before calling mc, 
you can change this to whatever you want...

--
cu

jth