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I have the exact same issue as Creating Conky text variables with zero padding? for displaying network speed. Except that I'm piping conky to dzen2. It seems lua_parse is not working within that setup.

I've tried :

  1. Formatting the string directly : ${lua_parse format %2s ${downspeed re0}}
  2. Using goto : ${downspeed re0}${goto 100}
  3. Setting a custom function in ~/.xmonad/conky_lua_script.lua :
function conky_format( format, number )
    return string.format( format, conky_parse( number ) )
end

Then in conkyrc:

lua_load = "~/.xmonad/conky_lua_script.lua"

conky.text = [[ 
 ${lua_parse format %5.0f ${downspeed re0}}% 
]];

Minimal working example :

conky.config = {
    background = true,
    out_to_console = true,
    out_to_x = false,
    update_interval = 1.0,
    use_spacer = 'none',
    use_xft = true
};


conky.text = [[
${downspeed re0}
]];

Run it with conky | dzen2 .

Edit The following works :

conky.config = {
    lua_load = "~/.xmonad/conky_lua_script.lua"
    ....
};

conky.text = [[
${lua format %7s ${downspeed re0}}
]];
alex_reader
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    Are you using a monospaced font in dzen2? Otherwise the text is bound to move. Are you using `format_human_readable = false,` with `use_spacer = 'left',` in conky? – meuh Feb 19 '21 at 16:27
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    I was setting `DejaVu Sans Mono` in conky but it seems like it did nothing. With a monospace font in dzen instead and`user_spacer = 'left'` in conky, it's much better. Text still moves when switching units though. I did not set `format_human_readable = false`, as it made speeds hard to read. So the best solution for now is to used `downspeedf` instead of `downspeed` for fixed text. I still prefer the output of `downspeed` though :) – alex_reader Feb 19 '21 at 17:18

1 Answers1

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I realize this is a pretty stale question, but I recently ran into the same problem and this was high on the search results. Since I was able to uncover the answer, I figured I'd post it for the sake of anyone else that runs into this problem.

The lua_load = ... must be in your conky.config table (and not at the top level of the file the way it was in the old config syntax). Something like this:

conky.config = {
    lua_load = 'path_to_script.lua',
    ...
};

Odd that even with debug enabled through -DD conky doesn't complain about the misplaced line.

Kopsis
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