Calling break doesn't exit from the block passed to Listen.to

[kyoma-takahashi]

Dear all,

I'm not sure whether it is an expected behavior or an issue, but I'd like to report.

When listening as the followings, it does not break from the block even when something changed on the directory.

require 'listen'
Listen.to('.') do |m,a,r|
  p m,a,r
  break
end

Instead, the followings stop listening when something changed on the directory.

require 'listen'
l = Listen.to('.')
l.change do |m,a,r|
  p m,a,r
  l.stop
end
l.start

My environment is the followings.

$ ruby -v
ruby 1.9.3p374 (2013-01-15 revision 38858) [x86_64-linux]
$ gem list --local listen
listen (0.7.3)
$ gem list --local rb-inotify
rb-inotify (0.9.0)

I had posted this to Google Group https://groups.google.com/forum/#!topic/guard-dev/kyLxIosT6IQ as instructed by https://github.com/guard/listen/blob/master/CONTRIBUTING.md and I was asked to open an issue here.

Cheers,

Kyoma

[thibaudgg]

Hi Kyoma,

Thanks to posting your issue here, as Listen.to with a block is a blocking method it wasn't designed to be broken in the first place, but it could be a use case to add. What do you think @Maher4Ever ?

[rymai]

@mub Indeed, you could probably send an INT signal to the Listen process. That said, I too think that calling break in the Listen.to block should exit the process.

[thibaudgg]

@mub have you try to require rb-inotify to avoiding fall back to polling adapter?

[rymai]

@mub Sorry it seems that you didn't understand what I wanted to say: I meant that the right behavior should be that when calling break in the Listen.to block, the process should exit. This correct behavior is not currently implemented.

[thibaudgg]

Closed for cause of non-answers.