Introduce verbose option

[somini]

Provide a way to silence nagging messages, more appropriate for a debug
situation.
You can define let g:EasyMotion_verbose = 0 to quiet most messages. By default, the variable is set to 1 to maintain the current behaviour.

This is similar to PR #239, but more aggressive, silences a lot more stuff by going directly to the source.

[haya14busa]

Even if &verbose == 0, Vim throws exceptions, so I don't want to suppress the error message.
It makes it hard to debug.

[somini]

You are correct, I just wanted to stop messages like 'EasyMotion: Cancelled'. Turns out there's a dead variable to do the same, I changed it to global verbose.

[haya14busa]

Thanks, I looks better than #239.
In addition to my comment, could you please writing test and document?

[somini]

I can write the documentation, but as for tests, how can I test for messages printed with echo?

[haya14busa]

It's my fault because I didn't write documentation for this variable, but this variable is used by https://github.com/haya14busa/vim-easyoperator-line.
Could you please reverting this line and check this var when printing exception?
If the verbose option is set, it's ok to suppress the exception regardless of this variable.

[haya14busa]

I can write the documentation, but as for tests, how can I test for messages printed with echo?

Thanks for the documentation. As for the test, only checking the global option is fine.
I guess we can write test for messages printed with echo using redir or something, but it's difficult to write.

[somini]

Sorry about that, that variable seemed to perform the same function. I did a git grep, but nothing came up, so I overwrote it. It's fixed now.

As for testing, I pushed my first stab at it. Still have to find how reliable verbosefile is.
How can I debug tests, can't I just echo some things to the rake execution?

[somini]

Rebased this to the latest master, it was only a documentation update.

[haya14busa]

I'm reaslly sorry for the late reply. It looks good to me. Thank you for the PR 👍

[somini]

Thanks! 👍