install_extend_commands

Installs the default irb commands:

irb_current_working_workspace

IRB::Context#main

irb_change_workspace

IRB::Context#change_workspace

irb_workspaces

IRB::Context#workspaces

irb_push_workspace

IRB::Context#push_workspace

irb_pop_workspace

IRB::Context#pop_workspace

irb_load

irb_load

irb_require

irb_require

irb_source

IRB::IrbLoader#source_file

irb

IRB.irb

irb_jobs

JobManager

irb_fg

IRB::JobManager#switch

irb_kill

IRB::JobManager#kill

irb_help

Command line options at IRB