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9e5167c351
* lib/English.rb (English): disable setting instead of removing after set. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@39037 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
185 lines
6.4 KiB
Ruby
185 lines
6.4 KiB
Ruby
# Include the English library file in a Ruby script, and you can
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# reference the global variables such as \VAR{\$\_} using less
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# cryptic names, listed in the following table.% \vref{tab:english}.
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#
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# Without 'English':
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#
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# $\ = ' -- '
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# "waterbuffalo" =~ /buff/
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# print $", $', $$, "\n"
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#
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# With English:
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#
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# require "English"
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#
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# $OUTPUT_FIELD_SEPARATOR = ' -- '
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# "waterbuffalo" =~ /buff/
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# print $LOADED_FEATURES, $POSTMATCH, $PID, "\n"
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#
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# Below is a full list of descriptive aliases and their associated global
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# variable:
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#
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# $ERROR_INFO:: $!
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# $ERROR_POSITION:: $@
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# $FS:: $;
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# $FIELD_SEPARATOR:: $;
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# $OFS:: $,
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# $OUTPUT_FIELD_SEPARATOR:: $,
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# $RS:: $/
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# $INPUT_RECORD_SEPARATOR:: $/
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# $ORS:: $\
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# $OUTPUT_RECORD_SEPARATOR:: $\
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# $INPUT_LINE_NUMBER:: $.
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# $NR:: $.
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# $LAST_READ_LINE:: $_
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# $DEFAULT_OUTPUT:: $>
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# $DEFAULT_INPUT:: $<
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# $PID:: $$
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# $PROCESS_ID:: $$
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# $CHILD_STATUS:: $?
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# $LAST_MATCH_INFO:: $~
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# $IGNORECASE:: $=
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# $ARGV:: $*
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# $MATCH:: $&
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# $PREMATCH:: $`
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# $POSTMATCH:: $'
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# $LAST_PAREN_MATCH:: $+
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#
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module English end if false
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# The exception object passed to +raise+.
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alias $ERROR_INFO $!
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# The stack backtrace generated by the last
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# exception. <tt>See Kernel.caller</tt> for details. Thread local.
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alias $ERROR_POSITION $@
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# The default separator pattern used by <tt>String.split</tt>. May be
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# set from the command line using the <tt>-F</tt> flag.
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alias $FS $;
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# The default separator pattern used by <tt>String.split</tt>. May be
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# set from the command line using the <tt>-F</tt> flag.
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alias $FIELD_SEPARATOR $;
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# The separator string output between the parameters to methods such
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# as <tt>Kernel.print</tt> and <tt>Array.join</tt>. Defaults to +nil+,
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# which adds no text.
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alias $OFS $,
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# The separator string output between the parameters to methods such
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# as <tt>Kernel.print</tt> and <tt>Array.join</tt>. Defaults to +nil+,
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# which adds no text.
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alias $OUTPUT_FIELD_SEPARATOR $,
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# The input record separator (newline by default). This is the value
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# that routines such as <tt>Kernel.gets</tt> use to determine record
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# boundaries. If set to +nil+, +gets+ will read the entire file.
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alias $RS $/
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# The input record separator (newline by default). This is the value
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# that routines such as <tt>Kernel.gets</tt> use to determine record
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# boundaries. If set to +nil+, +gets+ will read the entire file.
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alias $INPUT_RECORD_SEPARATOR $/
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# The string appended to the output of every call to methods such as
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# <tt>Kernel.print</tt> and <tt>IO.write</tt>. The default value is
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# +nil+.
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alias $ORS $\
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# The string appended to the output of every call to methods such as
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# <tt>Kernel.print</tt> and <tt>IO.write</tt>. The default value is
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# +nil+.
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alias $OUTPUT_RECORD_SEPARATOR $\
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# The number of the last line read from the current input file.
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alias $INPUT_LINE_NUMBER $.
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# The number of the last line read from the current input file.
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alias $NR $.
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# The last line read by <tt>Kernel.gets</tt> or
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# <tt>Kernel.readline</tt>. Many string-related functions in the
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# +Kernel+ module operate on <tt>$_</tt> by default. The variable is
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# local to the current scope. Thread local.
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alias $LAST_READ_LINE $_
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# The destination of output for <tt>Kernel.print</tt>
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# and <tt>Kernel.printf</tt>. The default value is
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# <tt>$stdout</tt>.
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alias $DEFAULT_OUTPUT $>
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# An object that provides access to the concatenation
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# of the contents of all the files
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# given as command-line arguments, or <tt>$stdin</tt>
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# (in the case where there are no
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# arguments). <tt>$<</tt> supports methods similar to a
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# +File+ object:
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# +inmode+, +close+,
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# <tt>closed?</tt>, +each+,
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# <tt>each_byte</tt>, <tt>each_line</tt>,
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# +eof+, <tt>eof?</tt>, +file+,
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# +filename+, +fileno+,
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# +getc+, +gets+, +lineno+,
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# <tt>lineno=</tt>, +path+,
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# +pos+, <tt>pos=</tt>,
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# +read+, +readchar+,
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# +readline+, +readlines+,
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# +rewind+, +seek+, +skip+,
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# +tell+, <tt>to_a</tt>, <tt>to_i</tt>,
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# <tt>to_io</tt>, <tt>to_s</tt>, along with the
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# methods in +Enumerable+. The method +file+
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# returns a +File+ object for the file currently
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# being read. This may change as <tt>$<</tt> reads
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# through the files on the command line. Read only.
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alias $DEFAULT_INPUT $<
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# The process number of the program being executed. Read only.
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alias $PID $$
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# The process number of the program being executed. Read only.
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alias $PROCESS_ID $$
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# The exit status of the last child process to terminate. Read
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# only. Thread local.
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alias $CHILD_STATUS $?
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# A +MatchData+ object that encapsulates the results of a successful
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# pattern match. The variables <tt>$&</tt>, <tt>$`</tt>, <tt>$'</tt>,
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# and <tt>$1</tt> to <tt>$9</tt> are all derived from
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# <tt>$~</tt>. Assigning to <tt>$~</tt> changes the values of these
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# derived variables. This variable is local to the current
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# scope.
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alias $LAST_MATCH_INFO $~
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# If set to any value apart from +nil+ or +false+, all pattern matches
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# will be case insensitive, string comparisons will ignore case, and
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# string hash values will be case insensitive. Deprecated
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alias $IGNORECASE $=
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# An array of strings containing the command-line
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# options from the invocation of the program. Options
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# used by the Ruby interpreter will have been
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# removed. Read only. Also known simply as +ARGV+.
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alias $ARGV $*
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# The string matched by the last successful pattern
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# match. This variable is local to the current
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# scope. Read only.
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alias $MATCH $&
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# The string preceding the match in the last
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# successful pattern match. This variable is local to
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# the current scope. Read only.
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alias $PREMATCH $`
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# The string following the match in the last
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# successful pattern match. This variable is local to
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# the current scope. Read only.
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alias $POSTMATCH $'
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# The contents of the highest-numbered group matched in the last
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# successful pattern match. Thus, in <tt>"cat" =~ /(c|a)(t|z)/</tt>,
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# <tt>$+</tt> will be set to "t". This variable is local to the
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# current scope. Read only.
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alias $LAST_PAREN_MATCH $+
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