Feature #5643: require/load options and binding option

• Status: Assigned
• Assignee: matz (Yukihiro Matsumoto)
• Target version: -

[trans (Thomas Sawyer)]

Current Kernel#load is defined as:

load(filename, wrap=false)

I purpose that it be modified to work as option argument, e.g.

load(filename, :wrap=>true)

Right off the bat this has better name connascence.

Then support an additional option :binding, such that, given:

$ cat lib/example.rb
def a
  1
end

then

class X
  load('example.rb', :binding=>binding)
end

X.new.a  #=> 1

The binding option should also work with #require (which would also support option parameter) differing from #load in the it would only allow the feature to be loaded once per-binding's self regardless of being required again.

This ability would greatly benefit systems that need "plugin" capability. Presently, a great deal of coding has to go into simulating this functionality to create plugin systems, which are often imperfect nor robust.

[mame (Yusuke Endoh)]

• Status changed from Open to Assigned
• Assignee set to matz (Yukihiro Matsumoto)

[ko1 (Koichi Sasada)]

• Target version changed from 2.0.0 to 2.6

I changed target to next minor because no discussion on it.

[trans (Thomas Sawyer)]

I think someone else recently suggested that the wrap argument be able to be a module which the code is then evaluated under, instead of toplevel. Considering that, maybe :wrap option should be used for all cases and it can just handle any of boolean, module or binding accordingly.

[nobu (Nobuyoshi Nakada)]

• Related to Feature #10320: require into module added

[naruse (Yui NARUSE)]

• Target version deleted (2.6)