[FR] Decouple progress frontend

[tkf]

IIUC, due to Juno-specific check in @progress macro implementation, code using @progress can only work inside Juno:

Juno.jl/src/progress.jl

Lines 105 to 106 in 554707e

	if isactive()
	@logmsg($PROGRESSLEVEL, $(esc(name)), progress=0.0, _id=Symbol($_id))

The specification in Juno.progress docstring also does not specify that using LogLevel(-1) is crucial.

These are issues I noticed while writing a ProgressMeter-Logging bridge ProgressMeterLogging.jl and adding a frontend support in my package JuliaFolds/Transducers.jl#63. I think a cleaner solution may be having a base package with a spec and a reference implementation of frontend progress macros and functions.

What do you think? Is it a good approach to decouple progress logging interface (frontend API and specification documentation) from Juno?

[pfitzseb]

Yes, definitely.

does not specify that using LogLevel(-1) is crucial.

It isn't for Juno's implementation -- any logging level higher or equal to -1 works (or higher than the min_enabled_level of the global logger). Should still be documented though.

[tkf]

OK, I created https://github.com/tkf/ProgressLogging.jl. Do you want to move it to https://github.com/JunoLab?

[pfitzseb]

Sure, why not -- invited you to the org. Thanks for splitting out the code!

[tkf]

I got a permission error when I tried to transfer it to JunoLab so I transferred the repository to you. Can you move it to JunoLab?

[pfitzseb]

Hm, weird. Should be transferred now.

[tkf]

Thanks!