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# sample for ~/.irbrc
# enables Tab completion
# uses simple prompt
# enables readline
# sets up history across sessions of irb
# sets up IRB_Tioga
require 'irb/completion'
IRB.conf[:PROMPT_MODE] = :SIMPLE
IRB.conf[:USE_READLINE] = true
HISTFILE = "~/.irb.hist"
MAXHISTSIZE = 100
begin
if defined? Readline::HISTORY
histfile = File::expand_path( HISTFILE )
if File::exists?( histfile )
lines = IO::readlines( histfile ).collect {|line| line.chomp}
puts "Read %d saved history commands from %s." %
[ lines.nitems, histfile ] if $DEBUG || $VERBOSE
Readline::HISTORY.push( *lines )
else
puts "History file '%s' was empty or non-existant." %
histfile if $DEBUG || $VERBOSE
end
Kernel::at_exit {
lines = Readline::HISTORY.to_a.reverse.uniq.reverse
lines = lines[ -MAXHISTSIZE, MAXHISTSIZE ] if lines.nitems > MAXHISTSIZE
$stderr.puts "Saving %d history lines to %s." %
[ lines.length, histfile ] if $VERBOSE || $DEBUG
File::open( histfile, File::WRONLY|File::CREAT|File::TRUNC ) {|ofh|
lines.each {|line| ofh.puts line }
}
}
end
end
require 'Tioga/irb_tioga.rb'
include Tioga::IRB_Tioga
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