Add delimiter option

[Arkoniak]

Currently, key-value pairs are printed with ", " delimiter. It should be optional (and thus provides better possibilities for parsing resulting logs).

[cossio]

Can we have key-value pairs on different lines? Like so:

julia> @info "hello" x=4 y=2
┌ Info: hello
│   x = 4
└   y = 2

That's the default logger.

With MiniLogger, instead, I get

julia> with_logger(MiniLogger()) do
       @info "hello" x=4 y=2
       end
[2022-04-29 10:55:19] Info: hellox = 4, y = 2

I'd prefer to have the multi-line version by default.

[Arkoniak]

Initially, MiniLoggers were developed for usage in various servers, where all logs are channeled to log files, and after that goes to various log visualizing systems. That was the main reason, why all output was compacted into single line. Secondly, it's a matter of taste, but I do not like overly verbose logs, you have to do a lot of scrolling if you have multiple log commands.

I think that multiline logging can be added, but only as a secondary option, not default.

[cossio]

I see. Just one question, in the above example:

julia> with_logger(MiniLogger()) do
       @info "hello" x=4 y=2
       end
[2022-04-29 10:55:19] Info: hellox = 4, y = 2

You see no space is printed between hello and x=4. Is there a way to make it insert a space or another delimiter there?
(Without me having to remember to add it manually after the "hello")

[Arkoniak]

Sure, the relevant code is https://github.com/JuliaLogging/MiniLoggers.jl/blob/master/src/minilogger.jl#L242-L253

I've made an issue for this bug: #33