@R2c thanks for sending your first contribution to Symfony!

I like this change a lot ... but sadly it's a backward compatibility break. Any existing command that doesn't specify the format gets the output in YML. If we make this change, the output will be XLIFF and things could break.

If we want to make this change, we need to find a way of doing it without breaking existing commands. Thanks!

I searched in Symfony, i don't find another command with output format in YML.
Maybe i'm wrong, but i think this command is clearly manual (dev).
I don't think people use this command in production, with crontab, etc.
That's why I put it on master.

I'm opened to make more changes, any idea about the compatibility ?

• Adding message on the changelog ?
• Adding message on the command... Starting at 3.4 - Output format will change in 4.2 to xliff

given ppl expect yaml format today, and with this change, should useformat=yml in the future... we could deprecate not passing a format, so we can change the default in 5.0

not sure if worth it :)

As this command is indeed something people run manually, I don't think changing the default is worth it.

My constat was :

Starting to use SF4 from the skeleton to look / try every changes. So I try a lot of stuff, when i try to install/use the translation part, i was suprise to see a .yml file? it's not .yaml in SF4 🤔

I use SF since a lot of years, but i'm imagining someone who start with it, i'm sure he will not understand why and it's look like a bug.

If we don't change now, it'll never change.

I don't see any simple way to change the default value without any BC break either. Which means that yes, it should stay as is forever.
We could still allow passing "yaml" as output-format?

What do we do here? I don't think we have a non-BC break policy on commands (I'm pretty sure we broke some in the past). Documenting the change in the CHANGELOG could be enough?

Thank you@R2c.