Feature #3426: exec doesn't allow command lines which begin with an env variable assignment

• Status: Rejected
• Assignee: mame (Yusuke Endoh)
• Target version: 2.0.0

[coatl (caleb clausen)]

=begin
The documentation for exec states: "If single string is given as the command, it is taken as a command line that is subject to shell expansion before being executed." However, command lines that begin with environment variable assignments do not seem to work. For example:

$ install/bin/ruby -e 'exec "FOO=1 echo bar"'
-e:1:in exec': No such file or directory - FOO=1 echo bar (Errno::ENOENT) from -e:1:in '

Other examples of shellish syntax (not a filename) for the first word do work.

This same problem seems to also afflict all the other constructs for running an external command: system, backticks, IO.popen, spawn. I'm reporting against 1.9.3, but all previous versions of ruby (s far back as 1.8.6) that I've tried have the problem as well.
=end

[mame (Yusuke Endoh)]

• Target version set to 2.0.0

=begin
See #3321. At least, this won't be fixed in 1.9.2.

But many people seem to hope this spec to be changed and I can
understand them. Let's discuss towards 1.9.x.
I move this ticket to 1.9.x feature tracker.

--
Yusuke Endoh [e-mail]
=end

[nahi (Hiroshi Nakamura)]

• Description updated (diff)
• Status changed from Open to Rejected
• Assignee set to mame (Yusuke Endoh)

Mark as Rejected since Endoh-san said it's duplicated of #3321, and #3321 is rejected.