[BUG] string comparation in :onscroll isn't working

[antoniocorbi]

Checklist before submitting an issue

• I have searched through the existing closed and open issues for eww and made sure this is not a duplicate
• I have specifically verified that this bug is not a common user error
• I am providing as much relevant information as I am able to in this bug report (Minimal config to reproduce the issue for example, if applicable)

Description of the bug

When implementing volume-up/down scrolling in a eventbox like this:

(eventbox
        :class       "eventbox"
        :onhover     "eww update volume=true"
        :onhoverlost "eww update volume=false"
        :cursor      "pointer"
        :onscroll    { "up" == {} ? "echo UP; amixer sset Master 5%+ >/dev/null" : "echo DOWN; amixer sset Master 5%- >/dev/null" }
        (box...

It always produces the 'else' string, but if implement :onscroll like this it works:

:onscroll    "if [ {} = \"up\" ]; then amixer sset Master 5%+ >/dev/null; else amixer sset Master 5%- >/dev/null; fi"

Reproducing the issue

No response

Expected behaviour

The first implementation proposed for :onscroll should work.

Additional context

No response

[antoniocorbi]

Forgot to mention OS (nixos 23.11) and eww version: 0.4.0

[elkowar]

Yeaa i see where the confusion is coming from - the issue here is that ewe evaluates the expression first, before replacing the {} with the "up" or "down" string, so whats actually happening is that youre comparing an empty json object to a string...

I don't think this will be avoidable any time soon, not before we get some form of lamdas

[antoniocorbi]

Thx Elkowar!

Yep, that's what I thought.
Meanwhile I'm using something similar to the shell-script proposed.

Thanks for your work in eww!