[ruby-core:43407] [ruby-trunk - Feature #3426][Rejected] exec doesn't allow command lines which begin with an env variable assignment

Issue #3426 has been updated by nahi.

Description updated
Status changed from Open to Rejected
Assignee set to mame

Mark as Rejected since Endoh-san said it's duplicated of #3321, and #3321 is rejected.
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Feature #3426: exec doesn't allow command lines which begin with an env variable assignment
https://bugs.ruby-lang.org/issues/3426#change-24720

Author: coatl
Status: Rejected
Priority: Normal
Assignee: mame
Category: lib
Target version: 2.0.0


=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 `<main>'
 
 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



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