From: "naruse (Yui NARUSE)" <naruse@...>
Date: 2012-07-27T22:53:28+09:00
Subject: [ruby-core:46813] [ruby-trunk - Feature #6793][Feedback] easier ability to "run as the currently running ruby"


Issue #6793 has been updated by naruse (Yui NARUSE).

Status changed from Open to Feedback

Eregon (Benoit Daloze) wrote:
> luislavena (Luis Lavena) wrote:
> > =begin
> > Already available, no RubyGems involved:
> > 
> >  C:\Users\Luis>ruby --disable-gems -rrbconfig -v -e "puts RbConfig.ruby"
> >  ruby 2.0.0dev (2012-07-13 trunk 36378) [i386-mingw32]
> >  C:/Users/Luis/Tools/Ruby/ruby-2.0.0dev-i386-mingw32/bin/ruby.exe
> > 
> > =end
> 
> Nice, although it's not available in 1.8.
> 
> I think the other important part about this subject is #6648: ability to retrieve VM flags, which would allow to relaunch the interpreter the same way (full path to the binary + arguments/flags).
> 
> Currently, I work around it by using `ps -o args -p pid` and GetCommandLineA(), which is far from optimal when we know it's so easily accessible for the VM (argc/args).

argv[0] is not reliable on some environment.
See also my comment on #4046.
----------------------------------------
Feature #6793: easier ability to "run as the currently running ruby"
https://bugs.ruby-lang.org/issues/6793#change-28487

Author: rogerdpack (Roger Pack)
Status: Feedback
Priority: Normal
Assignee: 
Category: 
Target version: 


Hello all.  I couldn't remember if this had been requested before or not but...

It would be kind to be able to do:
current_ruby = OS.ruby_bin
system("#{current_ruby} another_file.rb")

And thus guarantee execution of a sub-file using the same ruby executable.

Today we have
system("#{Gem.ruby} another_file.rb")

but I'd like to have something available without loading full rubygems.

Python equivalent: sys.executable

Suggestion:
>> OS.ruby_bin # or OS.executable, etc.
=> "C:/installs/Ruby193p194/bin/ruby.exe"
or
>> RbConfig.???
=> "C:/installs/Ruby193p194/bin/ruby.exe"

Thanks.
-roger-


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