[Help-bash] Why remove the export attribute of $

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[Help-bash] Why remove the export attribute of $_ every time after a sim

From:	ziyunfei
Subject:	[Help-bash] Why remove the export attribute of $_ every time after a simple command is executed
Date:	Mon, 7 Sep 2015 16:01:50 +0800

static void
bind_lastarg (arg)
     char *arg;
{
  SHELL_VAR *var;

  if (arg == 0)
    arg = "";
  var = bind_variable ("_", arg, 0);
  VUNSETATTR (var, att_exported);   // <--
}

http://code.metager.de/source/xref/gnu/bash/execute_cmd.c#3691

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[Help-bash] Why remove the export attribute of $_ every time after a simple command is executed, ziyunfei <=
- Re: [Help-bash] Why remove the export attribute of $_ every time after a simple command is executed, Chet Ramey, 2015/09/07
  - Re: [Help-bash] Why remove the export attribute of $_ every time after a simple command is executed, ziyunfei, 2015/09/07
    - Re: [Help-bash] Why remove the export attribute of $_ every time after a simple command is executed, Chet Ramey, 2015/09/08
    - Re: [Help-bash] Why remove the export attribute of $_ every time after a simple command is executed, ziyunfei, 2015/09/08

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