Yes
I got the same error message when I’ve tested it with GIMP 3.2RC1.
Just like for GIMP 3.0, I will wait for the official release before thinking about a possible fix (maybe this issue will be fixed with the stable 3.2 release).
2025/12/29: Release of G’MIC v.3.6.6
(St David’s day, here in France 
).
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replace_color ,,0,0,0,255,255,255
returns
*** Error *** Command 'replace_color': Undefined argument '$1', in expression '$1' (for 8 arguments specified).
Easy to see why. There is no default values in the code itself. Would be a good idea.
I’ve started the work on the next version, which will be 3.7.0. I’ve already pushed a pre-released on the G’MIC website. Filter updates are now stopped for older versions.
The release notes said that arg doesn’t exist anymore… so i’m not surprised some filters are now broken.
[stdlib-367] Command arg renamed as arg1. Do not use arg and arg() anymore. Use one of arg0, arg0(), arg1 and arg1().
edit: Looks like blur_x, blur_y and is_percent are gone too?
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Hmm… Has there been changes to arg0/1() itself? I always wanted this to be something to switch, where not all arguments are calculated at once.
A few thoughts about the next release:
As it will be a somehow “major” version, I’ve decided it was time to make some cleaning, because one can see that the executable sizes of the gmic interfaces are growing and growing.
This change has been done mainly for clarity. I’ve tried to modify all the stdlib and community files to make them use arg0() and arg1() but it may happen I’ve forgotten some. That will be easy to fix.
These command were already deprecated and have been removed in 3.7.0. They all have better alternatives in stdlib , for instance blur x,30 or math function ispercent(). So it should be also quite easy to manage.
Work on version 3.7.0 has just started so I expect some things to be broken at the beginning!
Thanks for reporting anything strange you get!
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Fixed.
Yes i understand, and i also didn’t mean it in a bad way. Just an observation. arg0 and arg1 are indeed clearer, so it’s cool!
Noted! Will update my scripts soon i hope. Still have to add descriptions too though, duh.
Should be already done BTW.
Ah, thanks. But there are still 2 in my testing folder that use arg and is_percent.
And there are still descriptions to add, though. Have to look how to do it.
I decided to use git diff. Wouldn’t this cause issues?
- const add_ang=arg(mode+1,8,15,30,180);
+ const add_ang=arg1(mode+1,8,15,30,180);
Should it be arg0(mode,8,15,30,180)?
I’ll have a look at everything friday. I see more of these.
EDIT: I checked, no issues. But, I will change it a little bit now.
EDIT 2: All good on my end.