'tspin -p empty.log' waits until file has content, which may never happen

[AndydeCleyre]

Thanks for this project, it's great!

One unexpected behavior I've noticed (in 2.0.0) is:

$ rm -f empty.log
$ touch empty.log
$ tspin -p empty.log  # hangs indefinitely

If I leave that hanging, and in a separate Zsh session run:

$ print -rl -- one two three >empty.log

then the first session with the hanging tspin command prints

one
two
three

and exits.

I wouldn't expect tspin -p to wait for any/more input -- is that intentional? I would expect instead for it to print nothing and exit immediately, in the case of an empty file.

[bensadeh]

Hi @AndydeCleyre and thanks for your detailed description.

This is indeed a bug. tspin -p should exit immediately when it reaches the end of the file, like you expect.

Additionally, I think the behavior you're seeing is something you'd expect if you ran tspin --follow --print (only it would run forever), which is currently unsupported, but I now see that it might be nice to have anyway.

[bensadeh]

Fixed in 45d3b1e. Will be available in the upcoming 2.1.0 release.

[bensadeh]

Just released 2.1.0. Will close this ticket, thanks for reporting it.