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English.rb
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# frozen_string_literal: true # Include the English library file in a Ruby script, and you can # reference the global variables such as <tt>$_</tt> using less # cryptic names, listed below. # # Without 'English': # # $\ = ' -- ' # "waterbuffalo" =~ /buff/ # print $', $$, "\n" # # With English: # # require "English" # # $OUTPUT_FIELD_SEPARATOR = ' -- ' # "waterbuffalo" =~ /buff/ # print $POSTMATCH, $PID, "\n" # # Below is a full list of descriptive aliases and their associated global # variable: # # $ERROR_INFO:: $! # $ERROR_POSITION:: $@ # $FS:: $; # $FIELD_SEPARATOR:: $; # $OFS:: $, # $OUTPUT_FIELD_SEPARATOR:: $, # $RS:: $/ # $INPUT_RECORD_SEPARATOR:: $/ # $ORS:: $\ # $OUTPUT_RECORD_SEPARATOR:: $\ # $INPUT_LINE_NUMBER:: $. # $NR:: $. # $LAST_READ_LINE:: $_ # $DEFAULT_OUTPUT:: $> # $DEFAULT_INPUT:: $< # $PID:: $$ # $PROCESS_ID:: $$ # $CHILD_STATUS:: $? # $LAST_MATCH_INFO:: $~ # $IGNORECASE:: $= # $ARGV:: $* # $MATCH:: $& # $PREMATCH:: $` # $POSTMATCH:: $' # $LAST_PAREN_MATCH:: $+ # module English end if false # The exception object passed to +raise+. alias $ERROR_INFO $! # The stack backtrace generated by the last # exception. See Kernel#caller for details. Thread local. alias $ERROR_POSITION $@ # The default separator pattern used by String#split. May be set from # the command line using the <tt>-F</tt> flag. alias $FS $; # The default separator pattern used by String#split. 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 Kernel#print and Array#join. Defaults to +nil+, which adds no # text. alias $OFS $, # The separator string output between the parameters to methods such # as Kernel#print and Array#join. 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 Kernel#gets 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 Kernel#gets 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 # Kernel#print and IO#write. The default value is +nil+. alias $ORS $\ # The string appended to the output of every call to methods such as # Kernel#print and IO#write. 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 Kernel#gets or # Kernel#readline. 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 Kernel#print # and Kernel#printf. 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. alias $LAST_MATCH_INFO $~ # This variable is no longer effective. 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. alias $MATCH $& # The string preceding the match in the last # successful pattern match. This variable is local to # the current scope. Read only. alias $PREMATCH $` # The string following the match in the last # successful pattern match. This variable is local to # the current scope. Read only. 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. alias $LAST_PAREN_MATCH $+