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- # Include the English library file in a Ruby script, and you can
- # reference the global variables such as \VAR{\$\_} using less
- # cryptic names, listed in the following table.% \vref{tab:english}.
- #
- # Without 'English':
- #
- # $\ = ' -- '
- # "waterbuffalo" =~ /buff/
- # print $", $', $$, "\n"
- #
- # With English:
- #
- # require "English"
- #
- # $OUTPUT_FIELD_SEPARATOR = ' -- '
- # "waterbuffalo" =~ /buff/
- # print $LOADED_FEATURES, $POSTMATCH, $PID, "\n"
-
-
- # The exception object passed to +raise+.
- alias $ERROR_INFO $!
-
- # The stack backtrace generated by the last
- # exception. <tt>See Kernel.caller</tt> for details. Thread local.
- alias $ERROR_POSITION $@
-
- # The default separator pattern used by <tt>String.split</tt>. May be
- # set from the command line using the <tt>-F</tt> flag.
- alias $FS $;
-
- # The default separator pattern used by <tt>String.split</tt>. May be
- # set from the command line using the <tt>-F</tt> flag.
- alias $FIELD_SEPARATOR $;
-
- # The separator string output between the parameters to methods such
- # as <tt>Kernel.print</tt> and <tt>Array.join</tt>. Defaults to +nil+,
- # which adds no text.
- alias $OFS $,
-
- # The separator string output between the parameters to methods such
- # as <tt>Kernel.print</tt> and <tt>Array.join</tt>. Defaults to +nil+,
- # which adds no text.
- alias $OUTPUT_FIELD_SEPARATOR $,
-
- # The input record separator (newline by default). This is the value
- # that routines such as <tt>Kernel.gets</tt> use to determine record
- # boundaries. If set to +nil+, +gets+ will read the entire file.
- alias $RS $/
-
- # The input record separator (newline by default). This is the value
- # that routines such as <tt>Kernel.gets</tt> use to determine record
- # boundaries. If set to +nil+, +gets+ will read the entire file.
- alias $INPUT_RECORD_SEPARATOR $/
-
- # The string appended to the output of every call to methods such as
- # <tt>Kernel.print</tt> and <tt>IO.write</tt>. The default value is
- # +nil+.
- alias $ORS $\
-
- # The string appended to the output of every call to methods such as
- # <tt>Kernel.print</tt> and <tt>IO.write</tt>. The default value is
- # +nil+.
- alias $OUTPUT_RECORD_SEPARATOR $\
-
- # The number of the last line read from the current input file.
- alias $INPUT_LINE_NUMBER $.
-
- # The number of the last line read from the current input file.
- alias $NR $.
-
- # The last line read by <tt>Kernel.gets</tt> or
- # <tt>Kernel.readline</tt>. Many string-related functions in the
- # +Kernel+ module operate on <tt>$_</tt> by default. The variable is
- # local to the current scope. Thread local.
- alias $LAST_READ_LINE $_
-
- # The destination of output for <tt>Kernel.print</tt>
- # and <tt>Kernel.printf</tt>. The default value is
- # <tt>$stdout</tt>.
- alias $DEFAULT_OUTPUT $>
-
- # An object that provides access to the concatenation
- # of the contents of all the files
- # given as command-line arguments, or <tt>$stdin</tt>
- # (in the case where there are no
- # arguments). <tt>$<</tt> supports methods similar to a
- # +File+ object:
- # +inmode+, +close+,
- # <tt>closed?</tt>, +each+,
- # <tt>each_byte</tt>, <tt>each_line</tt>,
- # +eof+, <tt>eof?</tt>, +file+,
- # +filename+, +fileno+,
- # +getc+, +gets+, +lineno+,
- # <tt>lineno=</tt>, +path+,
- # +pos+, <tt>pos=</tt>,
- # +read+, +readchar+,
- # +readline+, +readlines+,
- # +rewind+, +seek+, +skip+,
- # +tell+, <tt>to_a</tt>, <tt>to_i</tt>,
- # <tt>to_io</tt>, <tt>to_s</tt>, along with the
- # methods in +Enumerable+. The method +file+
- # returns a +File+ object for the file currently
- # being read. This may change as <tt>$<</tt> reads
- # through the files on the command line. Read only.
- alias $DEFAULT_INPUT $<
-
- # The process number of the program being executed. Read only.
- alias $PID $$
-
- # The process number of the program being executed. Read only.
- alias $PROCESS_ID $$
-
- # The exit status of the last child process to terminate. Read
- # only. Thread local.
- alias $CHILD_STATUS $?
-
- # A +MatchData+ object that encapsulates the results of a successful
- # pattern match. The variables <tt>$&</tt>, <tt>$`</tt>, <tt>$'</tt>,
- # and <tt>$1</tt> to <tt>$9</tt> are all derived from
- # <tt>$~</tt>. Assigning to <tt>$~</tt> changes the values of these
- # derived variables. This variable is local to the current
- # scope. Thread local.
- alias $LAST_MATCH_INFO $~
-
- # If set to any value apart from +nil+ or +false+, all pattern matches
- # will be case insensitive, string comparisons will ignore case, and
- # string hash values will be case insensitive. Deprecated
- alias $IGNORECASE $=
-
- # An array of strings containing the command-line
- # options from the invocation of the program. Options
- # used by the Ruby interpreter will have been
- # removed. Read only. Also known simply as +ARGV+.
- alias $ARGV $*
-
- # The string matched by the last successful pattern
- # match. This variable is local to the current
- # scope. Read only. Thread local.
- alias $MATCH $&
-
- # The string preceding the match in the last
- # successful pattern match. This variable is local to
- # the current scope. Read only. Thread local.
- alias $PREMATCH $`
-
- # The string following the match in the last
- # successful pattern match. This variable is local to
- # the current scope. Read only. Thread local.
- alias $POSTMATCH $'
-
- # The contents of the highest-numbered group matched in the last
- # successful pattern match. Thus, in <tt>"cat" =~ /(c|a)(t|z)/</tt>,
- # <tt>$+</tt> will be set to "t". This variable is local to the
- # current scope. Read only. Thread local.
- alias $LAST_PAREN_MATCH $+
-