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From: Richard Hansen <rhansen@bbn.com>
To: zsh-workers@zsh.org
Subject: 'emulate sh -c' and $0
Date: Thu, 29 May 2014 19:04:45 -0400	[thread overview]
Message-ID: <5387BD0D.8090202@bbn.com> (raw)

Hi all,

I just encountered what I think is a bug in Zsh 5.0.5.  The following
command:

    zsh -c '
        emulate sh -c "echo \"\$0\""
        bar() { emulate sh -c "echo \"\$0\""; }
        bar
    ' foo arg1

produces the following output:

    foo
    bar

I expected it to produce:

    foo
    foo

This is relevant when sourcing a file containing (POSIX) sh code that
might examine $0 (e.g., for logging or to 'exec "$0" "$@"' after
exporting/unsetting environment variables).

Perhaps Zsh should save the original value of $0 somewhere and restore
it when entering sh emulation mode.

Thanks,
Richard


             reply	other threads:[~2014-05-29 23:31 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-05-29 23:04 Richard Hansen [this message]
2014-05-30  3:45 ` Bart Schaefer
2014-05-30  8:49   ` Richard Hansen
2014-05-30 17:00     ` Bart Schaefer
2014-05-30 21:14       ` Richard Hansen
2014-05-31  5:13         ` Bart Schaefer
2014-05-31 23:47           ` Bart Schaefer
2014-06-03 20:15           ` Richard Hansen
2014-06-03 20:26             ` Peter Stephenson
2014-06-03 21:10               ` Bart Schaefer
2014-06-03 23:35                 ` Richard Hansen
2014-06-04  0:09                   ` Bart Schaefer
2014-06-03 21:21             ` Bart Schaefer
2014-06-03 22:54               ` Richard Hansen
2014-06-04  0:03                 ` Bart Schaefer
2014-06-04  1:10                   ` Bart Schaefer
2014-06-04  1:23                 ` Bart Schaefer

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