diff --git a/lib/irb.rb b/lib/irb.rb index 0c481ff1dc76ca..8e27aff0b18dff 100644 --- a/lib/irb.rb +++ b/lib/irb.rb @@ -1,5 +1,6 @@ # frozen_string_literal: true -# + +# :markup: markdown # irb.rb - irb main module # by Keiju ISHITSUKA(keiju@ruby-lang.org) # @@ -22,545 +23,551 @@ require_relative "irb/debug" require_relative "irb/pager" -# == \IRB +# ## IRB # -# \Module \IRB ("Interactive Ruby") provides a shell-like interface -# that supports user interaction with the Ruby interpreter. +# Module IRB ("Interactive Ruby") provides a shell-like interface that supports +# user interaction with the Ruby interpreter. # -# It operates as a read-eval-print loop -# ({REPL}[https://en.wikipedia.org/wiki/Read%E2%80%93eval%E2%80%93print_loop]) +# It operates as a *read-eval-print loop* +# ([REPL](https://en.wikipedia.org/wiki/Read%E2%80%93eval%E2%80%93print_loop)) # that: # -# - _Reads_ each character as you type. -# You can modify the \IRB context to change the way input works. -# See {Input}[rdoc-ref:IRB@Input]. -# - _Evaluates_ the code each time it has read a syntactically complete passage. -# - _Prints_ after evaluating. -# You can modify the \IRB context to change the way output works. -# See {Output}[rdoc-ref:IRB@Output]. +# * ***Reads*** each character as you type. You can modify the IRB context to +# change the way input works. See [Input](rdoc-ref:IRB@Input). +# * ***Evaluates*** the code each time it has read a syntactically complete +# passage. +# * ***Prints*** after evaluating. You can modify the IRB context to change +# the way output works. See [Output](rdoc-ref:IRB@Output). +# # # Example: # -# $ irb -# irb(main):001> File.basename(Dir.pwd) -# => "irb" -# irb(main):002> Dir.entries('.').size -# => 25 -# irb(main):003* Dir.entries('.').select do |entry| -# irb(main):004* entry.start_with?('R') -# irb(main):005> end -# => ["README.md", "Rakefile"] +# $ irb +# irb(main):001> File.basename(Dir.pwd) +# => "irb" +# irb(main):002> Dir.entries('.').size +# => 25 +# irb(main):003* Dir.entries('.').select do |entry| +# irb(main):004* entry.start_with?('R') +# irb(main):005> end +# => ["README.md", "Rakefile"] +# +# The typed input may also include [\IRB-specific +# commands](rdoc-ref:IRB@IRB-Specific+Commands). # -# The typed input may also include -# {\IRB-specific commands}[rdoc-ref:IRB@IRB-Specific+Commands]. +# As seen above, you can start IRB by using the shell command `irb`. # -# As seen above, you can start \IRB by using the shell command +irb+. +# You can stop an IRB session by typing command `exit`: # -# You can stop an \IRB session by typing command +exit+: +# irb(main):006> exit +# $ # -# irb(main):006> exit -# $ +# At that point, IRB calls any hooks found in array `IRB.conf[:AT_EXIT]`, then +# exits. # -# At that point, \IRB calls any hooks found in array IRB.conf[:AT_EXIT], -# then exits. +# ## Startup # -# == Startup +# At startup, IRB: # -# At startup, \IRB: +# 1. Interprets (as Ruby code) the content of the [configuration +# file](rdoc-ref:IRB@Configuration+File) (if given). +# 2. Constructs the initial session context from [hash +# IRB.conf](rdoc-ref:IRB@Hash+IRB.conf) and from default values; the hash +# content may have been affected by [command-line +# options](rdoc-ref:IB@Command-Line+Options), and by direct assignments in +# the configuration file. +# 3. Assigns the context to variable `conf`. +# 4. Assigns command-line arguments to variable `ARGV`. +# 5. Prints the [prompt](rdoc-ref:IRB@Prompt+and+Return+Formats). +# 6. Puts the content of the [initialization +# script](rdoc-ref:IRB@Initialization+Script) onto the IRB shell, just as if +# it were user-typed commands. # -# 1. Interprets (as Ruby code) the content of the -# {configuration file}[rdoc-ref:IRB@Configuration+File] (if given). -# 1. Constructs the initial session context -# from {hash IRB.conf}[rdoc-ref:IRB@Hash+IRB.conf] and from default values; -# the hash content may have been affected -# by {command-line options}[rdoc-ref:IB@Command-Line+Options], -# and by direct assignments in the configuration file. -# 1. Assigns the context to variable +conf+. -# 1. Assigns command-line arguments to variable ARGV. -# 1. Prints the {prompt}[rdoc-ref:IRB@Prompt+and+Return+Formats]. -# 1. Puts the content of the -# {initialization script}[rdoc-ref:IRB@Initialization+Script] -# onto the \IRB shell, just as if it were user-typed commands. # -# === The Command Line +# ### The Command Line # -# On the command line, all options precede all arguments; -# the first item that is not recognized as an option is treated as an argument, -# as are all items that follow. +# On the command line, all options precede all arguments; the first item that is +# not recognized as an option is treated as an argument, as are all items that +# follow. # -# ==== Command-Line Options +# #### Command-Line Options # -# Many command-line options affect entries in hash IRB.conf, -# which in turn affect the initial configuration of the \IRB session. +# Many command-line options affect entries in hash `IRB.conf`, which in turn +# affect the initial configuration of the IRB session. # # Details of the options are described in the relevant subsections below. # -# A cursory list of the \IRB command-line options -# may be seen in the {help message}[https://raw.githubusercontent.com/ruby/irb/master/lib/irb/lc/help-message], -# which is also displayed if you use command-line option --help. +# A cursory list of the IRB command-line options may be seen in the [help +# message](https://raw.githubusercontent.com/ruby/irb/master/lib/irb/lc/help-message), +# which is also displayed if you use command-line option `--help`. # # If you are interested in a specific option, consult the -# {index}[rdoc-ref:doc/irb/indexes.md@Index+of+Command-Line+Options]. +# [index](rdoc-ref:doc/irb/indexes.md@Index+of+Command-Line+Options). # -# ==== Command-Line Arguments +# #### Command-Line Arguments # -# Command-line arguments are passed to \IRB in array +ARGV+: +# Command-line arguments are passed to IRB in array `ARGV`: # -# $ irb --noscript Foo Bar Baz -# irb(main):001> ARGV -# => ["Foo", "Bar", "Baz"] -# irb(main):002> exit -# $ +# $ irb --noscript Foo Bar Baz +# irb(main):001> ARGV +# => ["Foo", "Bar", "Baz"] +# irb(main):002> exit +# $ # -# Command-line option -- causes everything that follows -# to be treated as arguments, even those that look like options: +# Command-line option `--` causes everything that follows to be treated as +# arguments, even those that look like options: # -# $ irb --noscript -- --noscript -- Foo Bar Baz -# irb(main):001> ARGV -# => ["--noscript", "--", "Foo", "Bar", "Baz"] -# irb(main):002> exit -# $ +# $ irb --noscript -- --noscript -- Foo Bar Baz +# irb(main):001> ARGV +# => ["--noscript", "--", "Foo", "Bar", "Baz"] +# irb(main):002> exit +# $ # -# === Configuration File +# ### Configuration File # -# You can initialize \IRB via a configuration file. +# You can initialize IRB via a *configuration file*. # -# If command-line option -f is given, -# no configuration file is looked for. +# If command-line option `-f` is given, no configuration file is looked for. # -# Otherwise, \IRB reads and interprets a configuration file -# if one is available. +# Otherwise, IRB reads and interprets a configuration file if one is available. # # The configuration file can contain any Ruby code, and can usefully include # user code that: # -# - Can then be debugged in \IRB. -# - Configures \IRB itself. -# - Requires or loads files. +# * Can then be debugged in IRB. +# * Configures IRB itself. +# * Requires or loads files. +# # # The path to the configuration file is the first found among: # -# - The value of variable $IRBRC, if defined. -# - The value of variable $XDG_CONFIG_HOME/irb/irbrc, if defined. -# - File $HOME/.irbrc, if it exists. -# - File $HOME/.config/irb/irbrc, if it exists. -# - File +.config/irb/irbrc+ in the current directory, if it exists. -# - File +.irbrc+ in the current directory, if it exists. -# - File +irb.rc+ in the current directory, if it exists. -# - File +_irbrc+ in the current directory, if it exists. -# - File $irbrc in the current directory, if it exists. +# * The value of variable `$IRBRC`, if defined. +# * The value of variable `$XDG_CONFIG_HOME/irb/irbrc`, if defined. +# * File `$HOME/.irbrc`, if it exists. +# * File `$HOME/.config/irb/irbrc`, if it exists. +# * File `.config/irb/irbrc` in the current directory, if it exists. +# * File `.irbrc` in the current directory, if it exists. +# * File `irb.rc` in the current directory, if it exists. +# * File `_irbrc` in the current directory, if it exists. +# * File `$irbrc` in the current directory, if it exists. +# # # If the search fails, there is no configuration file. # -# If the search succeeds, the configuration file is read as Ruby code, -# and so can contain any Ruby programming you like. +# If the search succeeds, the configuration file is read as Ruby code, and so +# can contain any Ruby programming you like. +# +# Method `conf.rc?` returns `true` if a configuration file was read, `false` +# otherwise. Hash entry `IRB.conf[:RC]` also contains that value. # -# \Method conf.rc? returns +true+ if a configuration file was read, -# +false+ otherwise. -# \Hash entry IRB.conf[:RC] also contains that value. +# ### Hash `IRB.conf` # -# === \Hash IRB.conf +# The initial entries in hash `IRB.conf` are determined by: # -# The initial entries in hash IRB.conf are determined by: +# * Default values. +# * Command-line options, which may override defaults. +# * Direct assignments in the configuration file. # -# - Default values. -# - Command-line options, which may override defaults. -# - Direct assignments in the configuration file. # -# You can see the hash by typing IRB.conf. +# You can see the hash by typing `IRB.conf`. # -# Details of the entries' meanings are described in the relevant subsections below. +# Details of the entries' meanings are described in the relevant subsections +# below. # # If you are interested in a specific entry, consult the -# {index}[rdoc-ref:doc/irb/indexes.md@Index+of+IRB.conf+Entries]. +# [index](rdoc-ref:doc/irb/indexes.md@Index+of+IRB.conf+Entries). # -# === Notes on Initialization Precedence +# ### Notes on Initialization Precedence # -# - Any conflict between an entry in hash IRB.conf and a command-line option -# is resolved in favor of the hash entry. -# - \Hash IRB.conf affects the context only once, -# when the configuration file is interpreted; -# any subsequent changes to it do not affect the context -# and are therefore essentially meaningless. +# * Any conflict between an entry in hash `IRB.conf` and a command-line option +# is resolved in favor of the hash entry. +# * Hash `IRB.conf` affects the context only once, when the configuration file +# is interpreted; any subsequent changes to it do not affect the context and +# are therefore essentially meaningless. # -# === Initialization Script # -# By default, the first command-line argument (after any options) -# is the path to a Ruby initialization script. +# ### Initialization Script # -# \IRB reads the initialization script and puts its content onto the \IRB shell, +# By default, the first command-line argument (after any options) is the path to +# a Ruby initialization script. +# +# IRB reads the initialization script and puts its content onto the IRB shell, # just as if it were user-typed commands. # -# Command-line option --noscript causes the first command-line argument -# to be treated as an ordinary argument (instead of an initialization script); -# --script is the default. +# Command-line option `--noscript` causes the first command-line argument to be +# treated as an ordinary argument (instead of an initialization script); +# `--script` is the default. # -# == Input +# ## Input # -# This section describes the features that allow you to change -# the way \IRB input works; -# see also {Input and Output}[rdoc-ref:IRB@Input+and+Output]. +# This section describes the features that allow you to change the way IRB input +# works; see also [Input and Output](rdoc-ref:IRB@Input+and+Output). # -# === Input Command History +# ### Input Command History # -# By default, \IRB stores a history of up to 1000 input commands in a -# file named .irb_history. The history file will be in the same directory -# as the {configuration file}[rdoc-ref:IRB@Configuration+File] if one is found, or -# in ~/ otherwise. +# By default, IRB stores a history of up to 1000 input commands in a file named +# `.irb_history`. The history file will be in the same directory as the +# [configuration file](rdoc-ref:IRB@Configuration+File) if one is found, or in +# `~/` otherwise. # -# A new \IRB session creates the history file if it does not exist, -# and appends to the file if it does exist. +# A new IRB session creates the history file if it does not exist, and appends +# to the file if it does exist. # # You can change the filepath by adding to your configuration file: -# IRB.conf[:HISTORY_FILE] = _filepath_, -# where _filepath_ is a string filepath. +# `IRB.conf[:HISTORY_FILE] = *filepath*`, where *filepath* is a string filepath. +# +# During the session, method `conf.history_file` returns the filepath, and +# method `conf.history_file = *new_filepath*` copies the history to the file at +# *new_filepath*, which becomes the history file for the session. # -# During the session, method conf.history_file returns the filepath, -# and method conf.history_file = new_filepath -# copies the history to the file at new_filepath, -# which becomes the history file for the session. +# You can change the number of commands saved by adding to your configuration +# file: `IRB.conf[:SAVE_HISTORY] = *n*`, wheHISTORY_FILEre *n* is one of: # -# You can change the number of commands saved by adding to your configuration file: -# IRB.conf[:SAVE_HISTORY] = _n_, -# where _n_ is one of: +# * Positive integer: the number of commands to be saved, +# * Zero: all commands are to be saved. +# * `nil`: no commands are to be saved,. # -# - Positive integer: the number of commands to be saved, -# - Zero: all commands are to be saved. -# - +nil+: no commands are to be saved,. # -# During the session, you can use -# methods conf.save_history or conf.save_history= -# to retrieve or change the count. +# During the session, you can use methods `conf.save_history` or +# `conf.save_history=` to retrieve or change the count. # -# === Command Aliases +# ### Command Aliases # -# By default, \IRB defines several command aliases: +# By default, IRB defines several command aliases: # -# irb(main):001> conf.command_aliases -# => {:"$"=>:show_source, :"@"=>:whereami} +# irb(main):001> conf.command_aliases +# => {:"$"=>:show_source, :"@"=>:whereami} # # You can change the initial aliases in the configuration file with: # -# IRB.conf[:COMMAND_ALIASES] = {foo: :show_source, bar: :whereami} +# IRB.conf[:COMMAND_ALIASES] = {foo: :show_source, bar: :whereami} # -# You can replace the current aliases at any time -# with configuration method conf.command_aliases=; -# Because conf.command_aliases is a hash, -# you can modify it. +# You can replace the current aliases at any time with configuration method +# `conf.command_aliases=`; Because `conf.command_aliases` is a hash, you can +# modify it. # -# === End-of-File +# ### End-of-File # -# By default, IRB.conf[:IGNORE_EOF] is +false+, -# which means that typing the end-of-file character Ctrl-D -# causes the session to exit. +# By default, `IRB.conf[:IGNORE_EOF]` is `false`, which means that typing the +# end-of-file character `Ctrl-D` causes the session to exit. # -# You can reverse that behavior by adding IRB.conf[:IGNORE_EOF] = true -# to the configuration file. +# You can reverse that behavior by adding `IRB.conf[:IGNORE_EOF] = true` to the +# configuration file. # -# During the session, method conf.ignore_eof? returns the setting, -# and method conf.ignore_eof = _boolean_ sets it. +# During the session, method `conf.ignore_eof?` returns the setting, and method +# `conf.ignore_eof = *boolean*` sets it. # -# === SIGINT +# ### SIGINT # -# By default, IRB.conf[:IGNORE_SIGINT] is +true+, -# which means that typing the interrupt character Ctrl-C -# causes the session to exit. +# By default, `IRB.conf[:IGNORE_SIGINT]` is `true`, which means that typing the +# interrupt character `Ctrl-C` causes the session to exit. # -# You can reverse that behavior by adding IRB.conf[:IGNORE_SIGING] = false -# to the configuration file. +# You can reverse that behavior by adding `IRB.conf[:IGNORE_SIGING] = false` to +# the configuration file. # -# During the session, method conf.ignore_siging? returns the setting, -# and method conf.ignore_sigint = _boolean_ sets it. +# During the session, method `conf.ignore_siging?` returns the setting, and +# method `conf.ignore_sigint = *boolean*` sets it. # -# === Automatic Completion +# ### Automatic Completion # -# By default, \IRB enables -# {automatic completion}[https://en.wikipedia.org/wiki/Autocomplete#In_command-line_interpreters]: +# By default, IRB enables [automatic +# completion](https://en.wikipedia.org/wiki/Autocomplete#In_command-line_interpr +# eters): # # You can disable it by either of these: # -# - Adding IRB.conf[:USE_AUTOCOMPLETE] = false to the configuration file. -# - Giving command-line option --noautocomplete -# (--autocomplete is the default). +# * Adding `IRB.conf[:USE_AUTOCOMPLETE] = false` to the configuration file. +# * Giving command-line option `--noautocomplete` (`--autocomplete` is the +# default). # -# \Method conf.use_autocomplete? returns +true+ -# if automatic completion is enabled, +false+ otherwise. +# +# Method `conf.use_autocomplete?` returns `true` if automatic completion is +# enabled, `false` otherwise. # # The setting may not be changed during the session. # -# === Automatic Indentation +# ### Automatic Indentation # -# By default, \IRB automatically indents lines of code to show structure -# (e.g., it indent the contents of a block). +# By default, IRB automatically indents lines of code to show structure (e.g., +# it indent the contents of a block). # -# The current setting is returned -# by the configuration method conf.auto_indent_mode. +# The current setting is returned by the configuration method +# `conf.auto_indent_mode`. # -# The default initial setting is +true+: +# The default initial setting is `true`: # -# irb(main):001> conf.auto_indent_mode -# => true -# irb(main):002* Dir.entries('.').select do |entry| -# irb(main):003* entry.start_with?('R') -# irb(main):004> end -# => ["README.md", "Rakefile"] +# irb(main):001> conf.auto_indent_mode +# => true +# irb(main):002* Dir.entries('.').select do |entry| +# irb(main):003* entry.start_with?('R') +# irb(main):004> end +# => ["README.md", "Rakefile"] # -# You can change the initial setting in the -# configuration file with: +# You can change the initial setting in the configuration file with: # -# IRB.conf[:AUTO_INDENT] = false +# IRB.conf[:AUTO_INDENT] = false # -# Note that the _current_ setting may not be changed in the \IRB session. +# Note that the *current* setting *may not* be changed in the IRB session. # -# === Input \Method +# ### Input Method # -# The \IRB input method determines how command input is to be read; -# by default, the input method for a session is IRB::RelineInputMethod. +# The IRB input method determines how command input is to be read; by default, +# the input method for a session is IRB::RelineInputMethod. # # You can set the input method by: # -# - Adding to the configuration file: +# * Adding to the configuration file: +# +# * `IRB.conf[:USE_SINGLELINE] = true` or `IRB.conf[:USE_MULTILINE]= +# false` sets the input method to IRB::ReadlineInputMethod. +# * `IRB.conf[:USE_SINGLELINE] = false` or `IRB.conf[:USE_MULTILINE] = +# true` sets the input method to IRB::RelineInputMethod. +# +# +# * Giving command-line options: +# +# * `--singleline` or `--nomultiline` sets the input method to +# IRB::ReadlineInputMethod. +# * `--nosingleline` or `--multiline` sets the input method to +# IRB::RelineInputMethod. # -# - IRB.conf[:USE_SINGLELINE] = true -# or IRB.conf[:USE_MULTILINE]= false -# sets the input method to IRB::ReadlineInputMethod. -# - IRB.conf[:USE_SINGLELINE] = false -# or IRB.conf[:USE_MULTILINE] = true -# sets the input method to IRB::RelineInputMethod. # -# - Giving command-line options: # -# - --singleline -# or --nomultiline -# sets the input method to IRB::ReadlineInputMethod. -# - --nosingleline -# or --multiline/tt> -# sets the input method to IRB::RelineInputMethod. +# Method `conf.use_multiline?` and its synonym `conf.use_reline` return: # -# \Method conf.use_multiline? -# and its synonym conf.use_reline return: +# * `true` if option `--multiline` was given. +# * `false` if option `--nomultiline` was given. +# * `nil` if neither was given. # -# - +true+ if option --multiline was given. -# - +false+ if option --nomultiline was given. -# - +nil+ if neither was given. # -# \Method conf.use_singleline? -# and its synonym conf.use_readline return: +# Method `conf.use_singleline?` and its synonym `conf.use_readline` return: # -# - +true+ if option --singleline was given. -# - +false+ if option --nosingleline was given. -# - +nil+ if neither was given. +# * `true` if option `--singleline` was given. +# * `false` if option `--nosingleline` was given. +# * `nil` if neither was given. # -# == Output # -# This section describes the features that allow you to change -# the way \IRB output works; -# see also {Input and Output}[rdoc-ref:IRB@Input+and+Output]. +# ## Output # -# === Return-Value Printing (Echoing) +# This section describes the features that allow you to change the way IRB +# output works; see also [Input and Output](rdoc-ref:IRB@Input+and+Output). # -# By default, \IRB prints (echoes) the values returned by all input commands. +# ### Return-Value Printing (Echoing) +# +# By default, IRB prints (echoes) the values returned by all input commands. # # You can change the initial behavior and suppress all echoing by: # -# - Adding to the configuration file: IRB.conf[:ECHO] = false. -# (The default value for this entry is +nil+, which means the same as +true+.) -# - Giving command-line option --noecho. -# (The default is --echo.) +# * Adding to the configuration file: `IRB.conf[:ECHO] = false`. (The default +# value for this entry is `nil`, which means the same as `true`.) +# * Giving command-line option `--noecho`. (The default is `--echo`.) +# +# +# During the session, you can change the current setting with configuration +# method `conf.echo=` (set to `true` or `false`). +# +# As stated above, by default IRB prints the values returned by all input +# commands; but IRB offers special treatment for values returned by assignment +# statements, which may be: # -# During the session, you can change the current setting -# with configuration method conf.echo= (set to +true+ or +false+). +# * Printed with truncation (to fit on a single line of output), which is the +# default; an ellipsis (`...` is suffixed, to indicate the truncation): # -# As stated above, by default \IRB prints the values returned by all input commands; -# but \IRB offers special treatment for values returned by assignment statements, -# which may be: +# irb(main):001> x = 'abc' * 100 # -# - Printed with truncation (to fit on a single line of output), -# which is the default; -# an ellipsis (... is suffixed, to indicate the truncation): # -# irb(main):001> x = 'abc' * 100 -# => "abcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabc... +# > "abcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabc... +# +# * Printed in full (regardless of the length). +# * Suppressed (not printed at all) # -# - Printed in full (regardless of the length). -# - Suppressed (not printed at all) # # You can change the initial behavior by: # -# - Adding to the configuration file: IRB.conf[:ECHO_ON_ASSIGNMENT] = false. -# (The default value for this entry is +niL+, which means the same as +:truncate+.) -# - Giving command-line option --noecho-on-assignment -# or --echo-on-assignment. -# (The default is --truncate-echo-on-assignment.) +# * Adding to the configuration file: `IRB.conf[:ECHO_ON_ASSIGNMENT] = false`. +# (The default value for this entry is `niL`, which means the same as +# `:truncate`.) +# * Giving command-line option `--noecho-on-assignment` or +# `--echo-on-assignment`. (The default is `--truncate-echo-on-assignment`.) +# # -# During the session, you can change the current setting -# with configuration method conf.echo_on_assignment= -# (set to +true+, +false+, or +:truncate+). +# During the session, you can change the current setting with configuration +# method `conf.echo_on_assignment=` (set to `true`, `false`, or `:truncate`). # -# By default, \IRB formats returned values by calling method +inspect+. +# By default, IRB formats returned values by calling method `inspect`. # # You can change the initial behavior by: # -# - Adding to the configuration file: IRB.conf[:INSPECT_MODE] = false. -# (The default value for this entry is +true+.) -# - Giving command-line option --noinspect. -# (The default is --inspect.) +# * Adding to the configuration file: `IRB.conf[:INSPECT_MODE] = false`. (The +# default value for this entry is `true`.) +# * Giving command-line option `--noinspect`. (The default is `--inspect`.) # -# During the session, you can change the setting using method conf.inspect_mode=. # -# === Multiline Output +# During the session, you can change the setting using method +# `conf.inspect_mode=`. # -# By default, \IRB prefixes a newline to a multiline response. +# ### Multiline Output +# +# By default, IRB prefixes a newline to a multiline response. # # You can change the initial default value by adding to the configuration file: # -# IRB.conf[:NEWLINE_BEFORE_MULTILINE_OUTPUT] = false +# IRB.conf[:NEWLINE_BEFORE_MULTILINE_OUTPUT] = false # -# During a session, you can retrieve or set the value using -# methods conf.newline_before_multiline_output? -# and conf.newline_before_multiline_output=. +# During a session, you can retrieve or set the value using methods +# `conf.newline_before_multiline_output?` and +# `conf.newline_before_multiline_output=`. # # Examples: # -# irb(main):001> conf.inspect_mode = false -# => false -# irb(main):002> "foo\nbar" -# => -# foo -# bar -# irb(main):003> conf.newline_before_multiline_output = false -# => false -# irb(main):004> "foo\nbar" -# => foo -# bar +# irb(main):001> conf.inspect_mode = false +# => false +# irb(main):002> "foo\nbar" +# => +# foo +# bar +# irb(main):003> conf.newline_before_multiline_output = false +# => false +# irb(main):004> "foo\nbar" +# => foo +# bar +# +# ### Evaluation History # -# === Evaluation History +# By default, IRB saves no history of evaluations (returned values), and the +# related methods `conf.eval_history`, `_`, and `__` are undefined. # -# By default, \IRB saves no history of evaluations (returned values), -# and the related methods conf.eval_history, _, -# and __ are undefined. +# You can turn on that history, and set the maximum number of evaluations to be +# stored: # -# You can turn on that history, and set the maximum number of evaluations to be stored: +# * In the configuration file: add `IRB.conf[:EVAL_HISTORY] = *n*`. (Examples +# below assume that we've added `IRB.conf[:EVAL_HISTORY] = 5`.) +# * In the session (at any time): `conf.eval_history = *n*`. # -# - In the configuration file: add IRB.conf[:EVAL_HISTORY] = _n_. -# (Examples below assume that we've added IRB.conf[:EVAL_HISTORY] = 5.) -# - In the session (at any time): conf.eval_history = _n_. # -# If +n+ is zero, all evaluation history is stored. +# If `n` is zero, all evaluation history is stored. # # Doing either of the above: # -# - Sets the maximum size of the evaluation history; -# defines method conf.eval_history, -# which returns the maximum size +n+ of the evaluation history: -# -# irb(main):001> conf.eval_history = 5 -# => 5 -# irb(main):002> conf.eval_history -# => 5 -# -# - Defines variable _, which contains the most recent evaluation, -# or +nil+ if none; same as method conf.last_value: -# -# irb(main):003> _ -# => 5 -# irb(main):004> :foo -# => :foo -# irb(main):005> :bar -# => :bar -# irb(main):006> _ -# => :bar -# irb(main):007> _ -# => :bar -# -# - Defines variable __: -# -# - __ unadorned: contains all evaluation history: -# -# irb(main):008> :foo -# => :foo -# irb(main):009> :bar -# => :bar -# irb(main):010> :baz -# => :baz -# irb(main):011> :bat -# => :bat -# irb(main):012> :bam -# => :bam -# irb(main):013> __ -# => -# 9 :bar -# 10 :baz -# 11 :bat -# 12 :bam -# irb(main):014> __ -# => -# 10 :baz -# 11 :bat -# 12 :bam -# 13 ...self-history... -# -# Note that when the evaluation is multiline, it is displayed differently. -# -# - __[_m_]: -# -# - Positive _m_: contains the evaluation for the given line number, -# or +nil+ if that line number is not in the evaluation history: -# -# irb(main):015> __[12] -# => :bam -# irb(main):016> __[1] -# => nil -# -# - Negative _m_: contains the +mth+-from-end evaluation, -# or +nil+ if that evaluation is not in the evaluation history: -# -# irb(main):017> __[-3] -# => :bam -# irb(main):018> __[-13] -# => nil -# -# - Zero _m_: contains +nil+: -# -# irb(main):019> __[0] -# => nil -# -# === Prompt and Return Formats -# -# By default, \IRB uses the prompt and return value formats -# defined in its +:DEFAULT+ prompt mode. -# -# ==== The Default Prompt and Return Format +# * Sets the maximum size of the evaluation history; defines method +# `conf.eval_history`, which returns the maximum size `n` of the evaluation +# history: +# +# irb(main):001> conf.eval_history = 5 +# => 5 +# irb(main):002> conf.eval_history +# => 5 +# +# * Defines variable `_`, which contains the most recent evaluation, or `nil` +# if none; same as method `conf.last_value`: +# +# irb(main):003> _ +# => 5 +# irb(main):004> :foo +# => :foo +# irb(main):005> :bar +# => :bar +# irb(main):006> _ +# => :bar +# irb(main):007> _ +# => :bar +# +# * Defines variable `__`: +# +# * `__` unadorned: contains all evaluation history: +# +# irb(main):008> :foo +# => :foo +# irb(main):009> :bar +# => :bar +# irb(main):010> :baz +# => :baz +# irb(main):011> :bat +# => :bat +# irb(main):012> :bam +# => :bam +# irb(main):013> __ +# => +# 9 :bar +# 10 :baz +# 11 :bat +# 12 :bam +# irb(main):014> __ +# => +# 10 :baz +# 11 :bat +# 12 :bam +# 13 ...self-history... +# +# Note that when the evaluation is multiline, it is displayed +# differently. +# +# * `__[`*m*`]`: +# +# * Positive *m*: contains the evaluation for the given line number, +# or `nil` if that line number is not in the evaluation history: +# +# irb(main):015> __[12] +# => :bam +# irb(main):016> __[1] +# => nil +# +# * Negative *m*: contains the `mth`-from-end evaluation, or `nil` if +# that evaluation is not in the evaluation history: +# +# irb(main):017> __[-3] +# => :bam +# irb(main):018> __[-13] +# => nil +# +# * Zero *m*: contains `nil`: +# +# irb(main):019> __[0] +# => nil +# +# +# +# +# ### Prompt and Return Formats +# +# By default, IRB uses the prompt and return value formats defined in its +# `:DEFAULT` prompt mode. +# +# #### The Default Prompt and Return Format # # The default prompt and return values look like this: # -# irb(main):001> 1 + 1 -# => 2 -# irb(main):002> 2 + 2 -# => 4 +# irb(main):001> 1 + 1 +# => 2 +# irb(main):002> 2 + 2 +# => 4 # # The prompt includes: # -# - The name of the running program (irb); -# see {IRB Name}[rdoc-ref:IRB@IRB+Name]. -# - The name of the current session (main); -# See {IRB Sessions}[rdoc-ref:IRB@IRB+Sessions]. -# - A 3-digit line number (1-based). +# * The name of the running program (`irb`); see [IRB +# Name](rdoc-ref:IRB@IRB+Name). +# * The name of the current session (`main`); See [IRB +# Sessions](rdoc-ref:IRB@IRB+Sessions). +# * A 3-digit line number (1-based). +# # # The default prompt actually defines three formats: # -# - One for most situations (as above): +# * One for most situations (as above): # -# irb(main):003> Dir -# => Dir +# irb(main):003> Dir +# => Dir # -# - One for when the typed command is a statement continuation (adds trailing asterisk): +# * One for when the typed command is a statement continuation (adds trailing +# asterisk): # -# irb(main):004* Dir. +# irb(main):004* Dir. # -# - One for when the typed command is a string continuation (adds trailing single-quote): +# * One for when the typed command is a string continuation (adds trailing +# single-quote): +# +# irb(main):005' Dir.entries('. # -# irb(main):005' Dir.entries('. # # You can see the prompt change as you type the characters in the following: # @@ -569,258 +576,266 @@ # irb(main):003> end # => ["README.md", "Rakefile"] # -# ==== Pre-Defined Prompts +# #### Pre-Defined Prompts # -# \IRB has several pre-defined prompts, stored in hash IRB.conf[:PROMPT]: +# IRB has several pre-defined prompts, stored in hash `IRB.conf[:PROMPT]`: # -# irb(main):001> IRB.conf[:PROMPT].keys -# => [:NULL, :DEFAULT, :CLASSIC, :SIMPLE, :INF_RUBY, :XMP] +# irb(main):001> IRB.conf[:PROMPT].keys +# => [:NULL, :DEFAULT, :CLASSIC, :SIMPLE, :INF_RUBY, :XMP] # -# To see the full data for these, type IRB.conf[:PROMPT]. +# To see the full data for these, type `IRB.conf[:PROMPT]`. # -# Most of these prompt definitions include specifiers that represent -# values like the \IRB name, session name, and line number; -# see {Prompt Specifiers}[rdoc-ref:IRB@Prompt+Specifiers]. +# Most of these prompt definitions include specifiers that represent values like +# the IRB name, session name, and line number; see [Prompt +# Specifiers](rdoc-ref:IRB@Prompt+Specifiers). # # You can change the initial prompt and return format by: # -# - Adding to the configuration file: IRB.conf[:PROMPT] = _mode_ -# where _mode_ is the symbol name of a prompt mode. -# - Giving a command-line option: +# * Adding to the configuration file: `IRB.conf[:PROMPT] = *mode*` where +# *mode* is the symbol name of a prompt mode. +# * Giving a command-line option: +# +# * `--prompt *mode*`: sets the prompt mode to *mode*. where *mode* is the +# symbol name of a prompt mode. +# * `--simple-prompt` or `--sample-book-mode`: sets the prompt mode to +# `:SIMPLE`. +# * `--inf-ruby-mode`: sets the prompt mode to `:INF_RUBY` and suppresses +# both `--multiline` and `--singleline`. +# * `--noprompt`: suppresses prompting; does not affect echoing. +# # -# - --prompt _mode_: sets the prompt mode to _mode_. -# where _mode_ is the symbol name of a prompt mode. -# - --simple-prompt or --sample-book-mode: -# sets the prompt mode to +:SIMPLE+. -# - --inf-ruby-mode: sets the prompt mode to +:INF_RUBY+ -# and suppresses both --multiline and --singleline. -# - --noprompt: suppresses prompting; does not affect echoing. # # You can retrieve or set the current prompt mode with methods # -# conf.prompt_mode and conf.prompt_mode=. +# `conf.prompt_mode` and `conf.prompt_mode=`. # # If you're interested in prompts and return formats other than the defaults, # you might experiment by trying some of the others. # -# ==== Custom Prompts +# #### Custom Prompts +# +# You can also define custom prompts and return formats, which may be done +# either in an IRB session or in the configuration file. # -# You can also define custom prompts and return formats, -# which may be done either in an \IRB session or in the configuration file. +# A prompt in IRB actually defines three prompts, as seen above. For simple +# custom data, we'll make all three the same: # -# A prompt in \IRB actually defines three prompts, as seen above. -# For simple custom data, we'll make all three the same: +# irb(main):001* IRB.conf[:PROMPT][:MY_PROMPT] = { +# irb(main):002* PROMPT_I: ': ', +# irb(main):003* PROMPT_C: ': ', +# irb(main):004* PROMPT_S: ': ', +# irb(main):005* RETURN: '=> ' +# irb(main):006> } +# => {:PROMPT_I=>": ", :PROMPT_C=>": ", :PROMPT_S=>": ", :RETURN=>"=> "} # -# irb(main):001* IRB.conf[:PROMPT][:MY_PROMPT] = { -# irb(main):002* PROMPT_I: ': ', -# irb(main):003* PROMPT_C: ': ', -# irb(main):004* PROMPT_S: ': ', -# irb(main):005* RETURN: '=> ' -# irb(main):006> } -# => {:PROMPT_I=>": ", :PROMPT_C=>": ", :PROMPT_S=>": ", :RETURN=>"=> "} +# If you define the custom prompt in the configuration file, you can also make +# it the current prompt by adding: # -# If you define the custom prompt in the configuration file, -# you can also make it the current prompt by adding: +# IRB.conf[:PROMPT_MODE] = :MY_PROMPT # -# IRB.conf[:PROMPT_MODE] = :MY_PROMPT +# Regardless of where it's defined, you can make it the current prompt in a +# session: # -# Regardless of where it's defined, you can make it the current prompt in a session: +# conf.prompt_mode = :MY_PROMPT # -# conf.prompt_mode = :MY_PROMPT +# You can view or modify the current prompt data with various configuration +# methods: # -# You can view or modify the current prompt data with various configuration methods: +# * `conf.prompt_mode`, `conf.prompt_mode=`. +# * `conf.prompt_c`, `conf.c=`. +# * `conf.prompt_i`, `conf.i=`. +# * `conf.prompt_s`, `conf.s=`. +# * `conf.return_format`, `return_format=`. # -# - conf.prompt_mode, conf.prompt_mode=. -# - conf.prompt_c, conf.c=. -# - conf.prompt_i, conf.i=. -# - conf.prompt_s, conf.s=. -# - conf.return_format, return_format=. # -# ==== Prompt Specifiers +# #### Prompt Specifiers # -# A prompt's definition can include specifiers for which certain values are substituted: +# A prompt's definition can include specifiers for which certain values are +# substituted: # -# - %N: the name of the running program. -# - %m: the value of self.to_s. -# - %M: the value of self.inspect. -# - %l: an indication of the type of string; -# one of ", ', /, ]. -# - NNi: Indentation level. -# - NNn: Line number. -# - %%: Literal %. +# * `%N`: the name of the running program. +# * `%m`: the value of `self.to_s`. +# * `%M`: the value of `self.inspect`. +# * `%l`: an indication of the type of string; one of `"`, `'`, `/`, `]`. +# * `*NN*i`: Indentation level. +# * `*NN*n`: Line number. +# * `%%`: Literal `%`. # -# === Verbosity # -# By default, \IRB verbosity is disabled, which means that output is smaller +# ### Verbosity +# +# By default, IRB verbosity is disabled, which means that output is smaller # rather than larger. # # You can enable verbosity by: # -# - Adding to the configuration file: IRB.conf[:VERBOSE] = true -# (the default is +nil+). -# - Giving command-line options --verbose -# (the default is --noverbose). +# * Adding to the configuration file: `IRB.conf[:VERBOSE] = true` (the default +# is `nil`). +# * Giving command-line options `--verbose` (the default is `--noverbose`). +# # # During a session, you can retrieve or set verbosity with methods -# conf.verbose and conf.verbose=. +# `conf.verbose` and `conf.verbose=`. # -# === Help +# ### Help # -# Command-line option --version causes \IRB to print its help text -# and exit. +# Command-line option `--version` causes IRB to print its help text and exit. # -# === Version +# ### Version # -# Command-line option --version causes \IRB to print its version text -# and exit. +# Command-line option `--version` causes IRB to print its version text and exit. # -# == Input and Output +# ## Input and Output # -# === \Color Highlighting +# ### Color Highlighting # -# By default, \IRB color highlighting is enabled, and is used for both: +# By default, IRB color highlighting is enabled, and is used for both: +# +# * Input: As you type, IRB reads the typed characters and highlights elements +# that it recognizes; it also highlights errors such as mismatched +# parentheses. +# * Output: IRB highlights syntactical elements. # -# - Input: As you type, \IRB reads the typed characters and highlights -# elements that it recognizes; -# it also highlights errors such as mismatched parentheses. -# - Output: \IRB highlights syntactical elements. # # You can disable color highlighting by: # -# - Adding to the configuration file: IRB.conf[:USE_COLORIZE] = false -# (the default value is +true+). -# - Giving command-line option --nocolorize +# * Adding to the configuration file: `IRB.conf[:USE_COLORIZE] = false` (the +# default value is `true`). +# * Giving command-line option `--nocolorize` +# # -# == Debugging +# ## Debugging # -# Command-line option -d sets variables $VERBOSE -# and $DEBUG to +true+; -# these have no effect on \IRB output. +# Command-line option `-d` sets variables `$VERBOSE` and `$DEBUG` to `true`; +# these have no effect on IRB output. # -# === Warnings +# ### Warnings # -# Command-line option -w suppresses warnings. +# Command-line option `-w` suppresses warnings. # -# Command-line option -W[_level_] -# sets warning level; 0=silence, 1=medium, 2=verbose. +# Command-line option `-W[*level*]` sets warning level; # -# == Other Features +# * 0=silence +# * 1=medium +# * 2=verbose # -# === Load Modules +# ## Other Features +# +# ### Load Modules # # You can specify the names of modules that are to be required at startup. # -# \Array conf.load_modules determines the modules (if any) -# that are to be required during session startup. -# The array is used only during session startup, -# so the initial value is the only one that counts. +# Array `conf.load_modules` determines the modules (if any) that are to be +# required during session startup. The array is used only during session +# startup, so the initial value is the only one that counts. # -# The default initial value is [] (load no modules): +# The default initial value is `[]` (load no modules): # -# irb(main):001> conf.load_modules -# => [] +# irb(main):001> conf.load_modules +# => [] # # You can set the default initial value via: # -# - Command-line option -r +# * Command-line option `-r` # -# $ irb -r csv -r json -# irb(main):001> conf.load_modules -# => ["csv", "json"] +# $ irb -r csv -r json +# irb(main):001> conf.load_modules +# => ["csv", "json"] # -# - \Hash entry IRB.conf[:LOAD_MODULES] = _array_: +# * Hash entry `IRB.conf[:LOAD_MODULES] = *array*`: +# +# IRB.conf[:LOAD_MODULES] = %w[csv, json] # -# IRB.conf[:LOAD_MODULES] = %w[csv, json] # # Note that the configuration file entry overrides the command-line options. # -# === RI Documentation Directories +# ### RI Documentation Directories # -# You can specify the paths to RI documentation directories -# that are to be loaded (in addition to the default directories) at startup; -# see details about RI by typing ri --help. +# You can specify the paths to RI documentation directories that are to be +# loaded (in addition to the default directories) at startup; see details about +# RI by typing `ri --help`. # -# \Array conf.extra_doc_dirs determines the directories (if any) -# that are to be loaded during session startup. -# The array is used only during session startup, +# Array `conf.extra_doc_dirs` determines the directories (if any) that are to be +# loaded during session startup. The array is used only during session startup, # so the initial value is the only one that counts. # -# The default initial value is [] (load no extra documentation): +# The default initial value is `[]` (load no extra documentation): # -# irb(main):001> conf.extra_doc_dirs -# => [] +# irb(main):001> conf.extra_doc_dirs +# => [] # # You can set the default initial value via: # -# - Command-line option --extra_doc_dir +# * Command-line option `--extra_doc_dir` # -# $ irb --extra-doc-dir your_doc_dir --extra-doc-dir my_doc_dir -# irb(main):001> conf.extra_doc_dirs -# => ["your_doc_dir", "my_doc_dir"] +# $ irb --extra-doc-dir your_doc_dir --extra-doc-dir my_doc_dir +# irb(main):001> conf.extra_doc_dirs +# => ["your_doc_dir", "my_doc_dir"] +# +# * Hash entry `IRB.conf[:EXTRA_DOC_DIRS] = *array*`: # -# - \Hash entry IRB.conf[:EXTRA_DOC_DIRS] = _array_: +# IRB.conf[:EXTRA_DOC_DIRS] = %w[your_doc_dir my_doc_dir] # -# IRB.conf[:EXTRA_DOC_DIRS] = %w[your_doc_dir my_doc_dir] # # Note that the configuration file entry overrides the command-line options. # -# === \IRB Name +# ### IRB Name # -# You can specify a name for \IRB. +# You can specify a name for IRB. # -# The default initial value is 'irb': +# The default initial value is `'irb'`: # -# irb(main):001> conf.irb_name -# => "irb" +# irb(main):001> conf.irb_name +# => "irb" # -# You can set the default initial value -# via hash entry IRB.conf[:IRB_NAME] = _string_: +# You can set the default initial value via hash entry `IRB.conf[:IRB_NAME] = +# *string*`: # -# IRB.conf[:IRB_NAME] = 'foo' +# IRB.conf[:IRB_NAME] = 'foo' # -# === Application Name +# ### Application Name # -# You can specify an application name for the \IRB session. +# You can specify an application name for the IRB session. # -# The default initial value is 'irb': +# The default initial value is `'irb'`: # -# irb(main):001> conf.ap_name -# => "irb" +# irb(main):001> conf.ap_name +# => "irb" # -# You can set the default initial value -# via hash entry IRB.conf[:AP_NAME] = _string_: +# You can set the default initial value via hash entry `IRB.conf[:AP_NAME] = +# *string*`: # -# IRB.conf[:AP_NAME] = 'my_ap_name' +# IRB.conf[:AP_NAME] = 'my_ap_name' # -# === Configuration Monitor +# ### Configuration Monitor # -# You can monitor changes to the configuration by assigning a proc -# to IRB.conf[:IRB_RC] in the configuration file: +# You can monitor changes to the configuration by assigning a proc to +# `IRB.conf[:IRB_RC]` in the configuration file: # -# IRB.conf[:IRB_RC] = proc {|conf| puts conf.class } +# IRB.conf[:IRB_RC] = proc {|conf| puts conf.class } # -# Each time the configuration is changed, -# that proc is called with argument +conf+: +# Each time the configuration is changed, that proc is called with argument +# `conf`: # -# === Encodings +# ### Encodings # -# Command-line option -E _ex_[:_in_] -# sets initial external (ex) and internal (in) encodings. +# Command-line option `-E *ex*[:*in*]` sets initial external (ex) and internal +# (in) encodings. # -# Command-line option -U sets both to UTF-8. +# Command-line option `-U` sets both to UTF-8. # -# === Commands +# ### Commands # # Please use the `help` command to see the list of available commands. # -# === IRB Sessions +# ### IRB Sessions # # IRB has a special feature, that allows you to manage many sessions at once. # # You can create new sessions with Irb.irb, and get a list of current sessions -# with the +jobs+ command in the prompt. +# with the `jobs` command in the prompt. # -# ==== Configuration +# #### Configuration # # The command line options, or IRB.conf, specify the default behavior of # Irb.irb. @@ -828,32 +843,33 @@ # On the other hand, each conf in IRB@Command-Line+Options is used to # individually configure IRB.irb. # -# If a proc is set for IRB.conf[:IRB_RC], its will be invoked after execution +# If a proc is set for `IRB.conf[:IRB_RC]`, its will be invoked after execution # of that proc with the context of the current session as its argument. Each # session can be configured using this mechanism. # -# ==== Session variables +# #### Session variables # # There are a few variables in every Irb session that can come in handy: # -# _:: -# The value command executed, as a local variable -# __:: -# The history of evaluated commands. Available only if -# IRB.conf[:EVAL_HISTORY] is not +nil+ (which is the default). -# See also IRB::Context#eval_history= and IRB::History. -# __[line_no]:: -# Returns the evaluation value at the given line number, +line_no+. -# If +line_no+ is a negative, the return value +line_no+ many lines before -# the most recent return value. +# `_` +# : The value command executed, as a local variable +# `__` +# : The history of evaluated commands. Available only if +# `IRB.conf[:EVAL_HISTORY]` is not `nil` (which is the default). See also +# IRB::Context#eval_history= and IRB::History. +# `__[line_no]` +# : Returns the evaluation value at the given line number, `line_no`. If +# `line_no` is a negative, the return value `line_no` many lines before the +# most recent return value. # -# == Restrictions # -# Ruby code typed into \IRB behaves the same as Ruby code in a file, except that: +# ## Restrictions # -# - Because \IRB evaluates input immediately after it is syntactically complete, -# some results may be slightly different. -# - Forking may not be well behaved. +# Ruby code typed into IRB behaves the same as Ruby code in a file, except that: +# +# * Because IRB evaluates input immediately after it is syntactically +# complete, some results may be slightly different. +# * Forking may not be well behaved. # module IRB @@ -862,14 +878,14 @@ class Abort < Exception;end # The current IRB::Context of the session, see IRB.conf # - # irb - # irb(main):001:0> IRB.CurrentContext.irb_name = "foo" - # foo(main):002:0> IRB.conf[:MAIN_CONTEXT].irb_name #=> "foo" - def IRB.CurrentContext + # irb + # irb(main):001:0> IRB.CurrentContext.irb_name = "foo" + # foo(main):002:0> IRB.conf[:MAIN_CONTEXT].irb_name #=> "foo" + def IRB.CurrentContext # :nodoc: IRB.conf[:MAIN_CONTEXT] end - # Initializes IRB and creates a new Irb.irb object at the +TOPLEVEL_BINDING+ + # Initializes IRB and creates a new Irb.irb object at the `TOPLEVEL_BINDING` def IRB.start(ap_path = nil) STDOUT.sync = true $0 = File::basename(ap_path, ".rb") if ap_path @@ -885,22 +901,22 @@ def IRB.start(ap_path = nil) end # Quits irb - def IRB.irb_exit(*) + def IRB.irb_exit(*) # :nodoc: throw :IRB_EXIT, false end # Aborts then interrupts irb. # - # Will raise an Abort exception, or the given +exception+. - def IRB.irb_abort(irb, exception = Abort) + # Will raise an Abort exception, or the given `exception`. + def IRB.irb_abort(irb, exception = Abort) # :nodoc: irb.context.thread.raise exception, "abort then interrupt!" end class Irb # Note: instance and index assignment expressions could also be written like: - # "foo.bar=(1)" and "foo.[]=(1, bar)", when expressed that way, the former - # be parsed as :assign and echo will be suppressed, but the latter is - # parsed as a :method_add_arg and the output won't be suppressed + # "foo.bar=(1)" and "foo.[]=(1, bar)", when expressed that way, the former be + # parsed as :assign and echo will be suppressed, but the latter is parsed as a + # :method_add_arg and the output won't be suppressed PROMPT_MAIN_TRUNCATE_LENGTH = 32 PROMPT_MAIN_TRUNCATE_OMISSION = '...' @@ -920,7 +936,8 @@ def initialize(workspace = nil, input_method = nil) @line_no = 1 end - # A hook point for `debug` command's breakpoint after :IRB_EXIT as well as its clean-up + # A hook point for `debug` command's breakpoint after :IRB_EXIT as well as its + # clean-up def debug_break # it means the debug integration has been activated if defined?(DEBUGGER__) && DEBUGGER__.respond_to?(:capture_frames_without_irb) @@ -938,13 +955,15 @@ def debug_readline(binding) @line_no += 1 # When users run: - # 1. Debugging commands, like `step 2` - # 2. Any input that's not irb-command, like `foo = 123` + # 1. Debugging commands, like `step 2` + # 2. Any input that's not irb-command, like `foo = 123` + # # - # Irb#eval_input will simply return the input, and we need to pass it to the debugger. + # Irb#eval_input will simply return the input, and we need to pass it to the + # debugger. input = if IRB.conf[:SAVE_HISTORY] && context.io.support_history_saving? - # Previous IRB session's history has been saved when `Irb#run` is exited - # We need to make sure the saved history is not saved again by resetting the counter + # Previous IRB session's history has been saved when `Irb#run` is exited We need + # to make sure the saved history is not saved again by resetting the counter context.io.reset_history_counter begin @@ -1004,7 +1023,8 @@ def eval_input each_top_level_statement do |statement, line_no| signal_status(:IN_EVAL) do begin - # If the integration with debugger is activated, we return certain input if it should be dealt with by debugger + # If the integration with debugger is activated, we return certain input if it + # should be dealt with by debugger if @context.with_debugger && statement.should_be_handled_by_debugger? return statement.code end @@ -1066,7 +1086,8 @@ def readmultiline code << line - # Accept any single-line input for symbol aliases or commands that transform args + # Accept any single-line input for symbol aliases or commands that transform + # args return code if single_line_command?(code) tokens, opens, terminated = @scanner.check_code_state(code, local_variables: @context.local_variables) @@ -1128,7 +1149,8 @@ def configure_io false end else - # Accept any single-line input for symbol aliases or commands that transform args + # Accept any single-line input for symbol aliases or commands that transform + # args next true if single_line_command?(code) _tokens, _opens, terminated = @scanner.check_code_state(code, local_variables: @context.local_variables) @@ -1143,7 +1165,8 @@ def configure_io tokens_until_line = [] line_results.map.with_index do |(line_tokens, _prev_opens, next_opens, _min_depth), line_num_offset| line_tokens.each do |token, _s| - # Avoid appending duplicated token. Tokens that include "\n" like multiline tstring_content can exist in multiple lines. + # Avoid appending duplicated token. Tokens that include "n" like multiline + # tstring_content can exist in multiple lines. tokens_until_line << token if token != tokens_until_line.last end continue = @scanner.should_continue?(tokens_until_line) @@ -1247,11 +1270,10 @@ def handle_exception(exc) end end - # Evaluates the given block using the given +path+ as the Context#irb_path - # and +name+ as the Context#irb_name. + # Evaluates the given block using the given `path` as the Context#irb_path and + # `name` as the Context#irb_name. # - # Used by the irb command +source+, see IRB@IRB+Sessions for more - # information. + # Used by the irb command `source`, see IRB@IRB+Sessions for more information. def suspend_name(path = nil, name = nil) @context.irb_path, back_path = path, @context.irb_path if path @context.irb_name, back_name = name, @context.irb_name if name @@ -1263,11 +1285,10 @@ def suspend_name(path = nil, name = nil) end end - # Evaluates the given block using the given +workspace+ as the + # Evaluates the given block using the given `workspace` as the # Context#workspace. # - # Used by the irb command +irb_load+, see IRB@IRB+Sessions for more - # information. + # Used by the irb command `irb_load`, see IRB@IRB+Sessions for more information. def suspend_workspace(workspace) current_workspace = @context.workspace @context.replace_workspace(workspace) @@ -1276,11 +1297,10 @@ def suspend_workspace(workspace) @context.replace_workspace current_workspace end - # Evaluates the given block using the given +input_method+ as the - # Context#io. + # Evaluates the given block using the given `input_method` as the Context#io. # - # Used by the irb commands +source+ and +irb_load+, see IRB@IRB+Sessions - # for more information. + # Used by the irb commands `source` and `irb_load`, see IRB@IRB+Sessions for + # more information. def suspend_input_method(input_method) back_io = @context.io @context.instance_eval{@io = input_method} @@ -1313,7 +1333,7 @@ def signal_handle end end - # Evaluates the given block using the given +status+. + # Evaluates the given block using the given `status`. def signal_status(status) return yield if @signal_status == :IN_LOAD @@ -1363,8 +1383,8 @@ def output_value(omit = false) # :nodoc: Pager.page_content(format(@context.return_format, str), retain_content: true) end - # Outputs the local variables to this current session, including - # #signal_status and #context, using IRB::Locale. + # Outputs the local variables to this current session, including #signal_status + # and #context, using IRB::Locale. def inspect ary = [] for iv in instance_variables @@ -1463,12 +1483,11 @@ def format_prompt(format, ltype, indent, line_no) # :nodoc: end class Binding - # Opens an IRB session where +binding.irb+ is called which allows for - # interactive debugging. You can call any methods or variables available in - # the current scope, and mutate state if you need to. - # + # Opens an IRB session where `binding.irb` is called which allows for + # interactive debugging. You can call any methods or variables available in the + # current scope, and mutate state if you need to. # - # Given a Ruby file called +potato.rb+ containing the following code: + # Given a Ruby file called `potato.rb` containing the following code: # # class Potato # def initialize @@ -1480,8 +1499,8 @@ class Binding # # Potato.new # - # Running ruby potato.rb will open an IRB session where - # +binding.irb+ is called, and you will see the following: + # Running `ruby potato.rb` will open an IRB session where `binding.irb` is + # called, and you will see the following: # # $ ruby potato.rb # @@ -1511,8 +1530,8 @@ class Binding # irb(#):004:0> @cooked = true # => true # - # You can exit the IRB session with the +exit+ command. Note that exiting will - # resume execution where +binding.irb+ had paused it, as you can see from the + # You can exit the IRB session with the `exit` command. Note that exiting will + # resume execution where `binding.irb` had paused it, as you can see from the # output printed to standard output in this example: # # irb(#):005:0> exit @@ -1535,13 +1554,14 @@ def irb(show_code: true) # If we're already in a debugger session, set the workspace and irb_path for the original IRB instance debugger_irb.context.replace_workspace(workspace) debugger_irb.context.irb_path = irb_path - # If we've started a debugger session and hit another binding.irb, we don't want to start an IRB session - # instead, we want to resume the irb:rdbg session. + # If we've started a debugger session and hit another binding.irb, we don't want + # to start an IRB session instead, we want to resume the irb:rdbg session. IRB::Debug.setup(debugger_irb) IRB::Debug.insert_debug_break debugger_irb.debug_break else - # If we're not in a debugger session, create a new IRB instance with the current workspace + # If we're not in a debugger session, create a new IRB instance with the current + # workspace binding_irb = IRB::Irb.new(workspace) binding_irb.context.irb_path = irb_path binding_irb.run(IRB.conf) diff --git a/lib/irb/ext/multi-irb.rb b/lib/irb/ext/multi-irb.rb index 944c04c822c9f3..9f234f0cdc26d2 100644 --- a/lib/irb/ext/multi-irb.rb +++ b/lib/irb/ext/multi-irb.rb @@ -5,7 +5,7 @@ # module IRB - class JobManager + class JobManager # :nodoc: # Creates a new JobManager object def initialize @@ -166,12 +166,12 @@ def inspect @JobManager = JobManager.new # The current JobManager in the session - def IRB.JobManager + def IRB.JobManager # :nodoc: @JobManager end # The current Context in this session - def IRB.CurrentContext + def IRB.CurrentContext # :nodoc: IRB.JobManager.irb(Thread.current).context end @@ -179,7 +179,7 @@ def IRB.CurrentContext # # The optional +file+ argument is given to Context.new, along with the # workspace created with the remaining arguments, see WorkSpace.new - def IRB.irb(file = nil, *main) + def IRB.irb(file = nil, *main) # :nodoc: workspace = WorkSpace.new(*main) parent_thread = Thread.current Thread.start do diff --git a/lib/irb/help.rb b/lib/irb/help.rb index c97656f0c47013..a24bc10a152afd 100644 --- a/lib/irb/help.rb +++ b/lib/irb/help.rb @@ -6,7 +6,7 @@ module IRB # Outputs the irb help message, see IRB@Command-Line+Options. - def IRB.print_usage + def IRB.print_usage # :nodoc: lc = IRB.conf[:LC_MESSAGES] path = lc.find("irb/help-message") space_line = false