🔊 Make INFO the default logging level

[marianosimone]

As proposed by @ko1 in https://github.com/ruby/debug/pull/750, make INFO the default level, so we can move down some messages like:

DEBUGGER:  BP - Line  /<redacted>.rb:<line> (call) is activated.

At the same time, there seem to be a lot of current logs that are more suited for the DEBUG level than INFO, so I'm moving those down to not make the new default more noisy.

[ko1]

Thank you for the patch. Viewing the changes, I want additional info command :p

• 1. Convenience information
  • enabling breakpoint
  • forking process
• 2. Less-convenience information (but sometimes it is useful)
  • loading a ruby file
• 3. debugger Internal events

I agree 1 and 3 is INFO and DEBUG. Not sure for 2. Your patch makes 2 as DEBUG (and I agree almost it is enough). hmm.

The current design

• WARN - for 1
• INFO - for 2
• DEBUG - for 3

is better? Let me take a time for consideration. Another tools/debuggers examples are also welecome.

[marianosimone]

I think ERROR, WARN, INFO and DEBUG are pretty standard in terms of logging levels, and they roughly match with my patch here. I believe it would be weird to add a new level in between them.

Feel free to edit this PR as you see fit to match your logging philosophy, though :)

[ko1]

fix with #823