Forcing STDOUT.sync for scripts

Ruby
1

I’m trying to figure out a way to force STDOUT to be synchronized when
I run scripts with Ruby. I’m using emacs and MKSNT on Windows XP, and
I can’t see the output (nor give input) when I run things like the
generate script for Rails, the WEBrick server, etc. because output is
buffered.

I tried putting -e “STDOUT.sync = true” before my script invocation,
but it looks like Ruby doesn’t run a given script file if the -e is
given. Boo.

Does anyone know a way to fix this? I can run the scripts outside of
emacs, but it’s a real pain…

Frayzhe

2

Frayzhe wrote:

Does anyone know a way to fix this? I can run the scripts outside of
emacs, but it’s a real pain…

How about creating a “sync.rb” file in your site-ruby folder, then:

ruby -rsync myscript.rb

?

daz

3

daz schrieb:

How about creating a “sync.rb” file in your site-ruby folder, then:

ruby -rsync myscript.rb

It would be great either to:

  1. ship such a module with ruby

or to

  1. provide a command line option such as python’s:
    “-u: unbuffered binary stdout and stderr”

This feature is often required, such as running a script in any IDE.

Cheers,
Paulus

4

You could always build your sync.rb file and add it to your RUBYOPT env
variable …

j.

On 11/27/05, Paulus E. [email protected] wrote:

or to

–
“Remember. Understand. Believe. Yield! → http://ruby-lang.org”

Jeff W.

5

Paulus E. schrieb:

or to

  1. provide a command line option such as python’s:
    “-u: unbuffered binary stdout and stderr”

This feature is often required, such as running a script in any IDE.

Hi Paulus,

another way is use a command line such as

ruby -e “STDOUT.sync = true” -e “load ARGV.shift” myscript.rb

Regards,
Pit

6

Frayzhe schrieb:

This last suggestion would be great, but it doesn’t work. Ruby doesn’t
run the script given at the end of the command line if you have one or
more -e switches. This, too, seems like something that could/should be
changed…

Have you tried the command line I’ve shown?

Regards,
Pit

7

This last suggestion would be great, but it doesn’t work. Ruby doesn’t
run the script given at the end of the command line if you have one or
more -e switches. This, too, seems like something that could/should be
changed…

Frayzhe

8

Hi,

At Mon, 28 Nov 2005 16:51:38 +0900,
Pit C. wrote in [ruby-talk:167734]:

another way is use a command line such as

ruby -e “STDOUT.sync = true” -e “load ARGV.shift” myscript.rb

It’d be better to set $0 too.

 ruby -e STDOUT.sync=true -e 'load($0=ARGV.shift)' myscript.rb
9

nobuyoshi nakada schrieb:

At Mon, 28 Nov 2005 16:51:38 +0900,
Pit C. wrote in [ruby-talk:167734]:

another way is use a command line such as

ruby -e “STDOUT.sync = true” -e “load ARGV.shift” myscript.rb

It’d be better to set $0 too.

 ruby -e STDOUT.sync=true -e 'load($0=ARGV.shift)' myscript.rb

Hi Nobu,

I didn’t know you can do this. Thanks for the info! It’s very useful for
my programs.

Regards,
Pit

10

Pit,

Thank you! I dismissed your command line too quickly without looking
closely at what you were suggesting. Your ARGV.shift trick works
great…

Frayzhe