From: Stu <stu@...>
Date: 2013-04-27T11:26:43+09:00
Subject: Re: what is the $- magic global?

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It's not documented in English.rb so it has not been aliased to a
REALLY_LONG_VARIABLE_4JAVA_DEVS

The posix shell definition for $- is:

$-      (hyphen) Expands to the current option flags (the single-letter
	     option names concatenated into a string) as specified on invoca-
	     tion, by the *set* built-in command, or implicitly by the shell.

I see no reason for ruby to have it defined differently.

English.rb is well documented in 2.0:

#  $ERROR_INFO::              $!
#  $ERROR_POSITION::          $@
#  $FS::                      $;
#  $FIELD_SEPARATOR::         $;
#  $OFS::                     $,
#  $OUTPUT_FIELD_SEPARATOR::  $,
#  $RS::                      $/
#  $INPUT_RECORD_SEPARATOR::  $/
#  $ORS::                     $\
#  $OUTPUT_RECORD_SEPARATOR:: $\
#  $INPUT_LINE_NUMBER::       $.
#  $NR::                      $.
#  $LAST_READ_LINE::          $_
#  $DEFAULT_OUTPUT::          $>
#  $DEFAULT_INPUT::           $<
#  $PID::                     $$
#  $PROCESS_ID::              $$
#  $CHILD_STATUS::            $?
#  $LAST_MATCH_INFO::         $~
#  $IGNORECASE::              $=
#  $ARGV::                    $*
#  $MATCH::                   $&
#  $PREMATCH::                $`
#  $POSTMATCH::               $'
#  $LAST_PAREN_MATCH::        $+

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<div dir=3D"ltr"><div>It&#39;s not documented in English.rb so it has not b=
een aliased to a REALLY_LONG_VARIABLE_4JAVA_DEVS<br><br></div>The posix she=
ll definition for $- is:<br><pre>$-      (hyphen) Expands to the current op=
tion flags (the single-letter
	     option names concatenated into a string) as specified on invoca-
	     tion, by the <b>set</b> built-in command, or implicitly by the shell.=
<br><br></pre><pre>I see no reason for ruby to have it defined differently.=
<br><br></pre><pre>English.rb is well documented in 2.0:<br><br>#  $ERROR_I=
NFO::              $!<br>
#  $ERROR_POSITION::          $@<br>#  $FS::                      $;<br>#  =
$FIELD_SEPARATOR::         $;<br>#  $OFS::                     $,<br>#  $OU=
TPUT_FIELD_SEPARATOR::  $,<br>#  $RS::                      $/<br>#  $INPUT=
_RECORD_SEPARATOR::  $/<br>
#  $ORS::                     $\<br>#  $OUTPUT_RECORD_SEPARATOR:: $\<br>#  =
$INPUT_LINE_NUMBER::       $.<br>#  $NR::                      $.<br>#  $LA=
ST_READ_LINE::          $_<br>#  $DEFAULT_OUTPUT::          $&gt;<br>#  $DE=
FAULT_INPUT::           $&lt;<br>
#  $PID::                     $$<br>#  $PROCESS_ID::              $$<br>#  =
$CHILD_STATUS::            $?<br>#  $LAST_MATCH_INFO::         $~<br>#  $IG=
NORECASE::              $=3D<br>#  $ARGV::                    $*<br>#  $MAT=
CH::                   $&amp;<br>
#  $PREMATCH::                $`<br>#  $POSTMATCH::               $&#39;<br=
>#  $LAST_PAREN_MATCH::        $+<br></pre></div>

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