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-READLINE(3) READLINE(3)
-
-
-
-NNAAMMEE
- readline - get a line from a user with editing
-
-SSYYNNOOPPSSIISS
- ##iinncclluuddee <<ssttddiioo..hh>>
- ##iinncclluuddee <<rreeaaddlliinnee//rreeaaddlliinnee..hh>>
- ##iinncclluuddee <<rreeaaddlliinnee//hhiissttoorryy..hh>>
-
- _c_h_a_r _*
- rreeaaddlliinnee (_c_o_n_s_t _c_h_a_r _*_p_r_o_m_p_t);
-
-CCOOPPYYRRIIGGHHTT
- Readline is Copyright (C) 1989-2002 by the Free Software
- Foundation, Inc.
-
-DDEESSCCRRIIPPTTIIOONN
- rreeaaddlliinnee will read a line from the terminal and return it,
- using pprroommpptt as a prompt. If pprroommpptt is NNUULLLL or the empty
- string, no prompt is issued. The line returned is allo-
- cated with _m_a_l_l_o_c(3); the caller must free it when fin-
- ished. The line returned has the final newline removed,
- so only the text of the line remains.
-
- rreeaaddlliinnee offers editing capabilities while the user is
- entering the line. By default, the line editing commands
- are similar to those of emacs. A vi-style line editing
- interface is also available.
-
- This manual page describes only the most basic use of
- rreeaaddlliinnee. Much more functionality is available; see _T_h_e
- _G_N_U _R_e_a_d_l_i_n_e _L_i_b_r_a_r_y and _T_h_e _G_N_U _H_i_s_t_o_r_y _L_i_b_r_a_r_y for addi-
- tional information.
-
-RREETTUURRNN VVAALLUUEE
- rreeaaddlliinnee returns the text of the line read. A blank line
- returns the empty string. If EEOOFF is encountered while
- reading a line, and the line is empty, NNUULLLL is returned.
- If an EEOOFF is read with a non-empty line, it is treated as
- a newline.
-
-NNOOTTAATTIIOONN
- An emacs-style notation is used to denote keystrokes.
- Control keys are denoted by C-_k_e_y, e.g., C-n means Con-
- trol-N. Similarly, _m_e_t_a keys are denoted by M-_k_e_y, so M-x
- means Meta-X. (On keyboards without a _m_e_t_a key, M-_x means
- ESC _x, i.e., press the Escape key then the _x key. This
- makes ESC the _m_e_t_a _p_r_e_f_i_x. The combination M-C-_x means
- ESC-Control-_x, or press the Escape key then hold the Con-
- trol key while pressing the _x key.)
-
- Readline commands may be given numeric _a_r_g_u_m_e_n_t_s, which
- normally act as a repeat count. Sometimes, however, it is
- the sign of the argument that is significant. Passing a
- negative argument to a command that acts in the forward
- direction (e.g., kkiillll--lliinnee) causes that command to act in
- a backward direction. Commands whose behavior with argu-
- ments deviates from this are noted.
-
- When a command is described as _k_i_l_l_i_n_g text, the text
- deleted is saved for possible future retrieval (_y_a_n_k_i_n_g).
- The killed text is saved in a _k_i_l_l _r_i_n_g. Consecutive
- kills cause the text to be accumulated into one unit,
- which can be yanked all at once. Commands which do not
- kill text separate the chunks of text on the kill ring.
-
-IINNIITTIIAALLIIZZAATTIIOONN FFIILLEE
- Readline is customized by putting commands in an initial-
- ization file (the _i_n_p_u_t_r_c file). The name of this file is
- taken from the value of the IINNPPUUTTRRCC environment variable.
- If that variable is unset, the default is _~_/_._i_n_p_u_t_r_c.
- When a program which uses the readline library starts up,
- the init file is read, and the key bindings and variables
- are set. There are only a few basic constructs allowed in
- the readline init file. Blank lines are ignored. Lines
- beginning with a ## are comments. Lines beginning with a $$
- indicate conditional constructs. Other lines denote key
- bindings and variable settings. Each program using this
- library may add its own commands and bindings.
-
- For example, placing
-
- M-Control-u: universal-argument
- or
- C-Meta-u: universal-argument
-
- into the _i_n_p_u_t_r_c would make M-C-u execute the readline
- command _u_n_i_v_e_r_s_a_l_-_a_r_g_u_m_e_n_t.
-
- The following symbolic character names are recognized
- while processing key bindings: _D_E_L, _E_S_C, _E_S_C_A_P_E, _L_F_D, _N_E_W_-
- _L_I_N_E, _R_E_T, _R_E_T_U_R_N, _R_U_B_O_U_T, _S_P_A_C_E, _S_P_C, and _T_A_B.
-
- In addition to command names, readline allows keys to be
- bound to a string that is inserted when the key is pressed
- (a _m_a_c_r_o).
-
-
- KKeeyy BBiinnddiinnggss
- The syntax for controlling key bindings in the _i_n_p_u_t_r_c
- file is simple. All that is required is the name of the
- command or the text of a macro and a key sequence to which
- it should be bound. The name may be specified in one of
- two ways: as a symbolic key name, possibly with _M_e_t_a_- or
- _C_o_n_t_r_o_l_- prefixes, or as a key sequence.
-
- When using the form kkeeyynnaammee:_f_u_n_c_t_i_o_n_-_n_a_m_e or _m_a_c_r_o, _k_e_y_-
- _n_a_m_e is the name of a key spelled out in English. For
- example:
-
- Control-u: universal-argument
- Meta-Rubout: backward-kill-word
- Control-o: "> output"
-
- In the above example, _C_-_u is bound to the function uunniivveerr--
- ssaall--aarrgguummeenntt, _M_-_D_E_L is bound to the function bbaacckk--
- wwaarrdd--kkiillll--wwoorrdd, and _C_-_o is bound to run the macro
- expressed on the right hand side (that is, to insert the
- text ``> output'' into the line).
-
- In the second form, ""kkeeyysseeqq"":_f_u_n_c_t_i_o_n_-_n_a_m_e or _m_a_c_r_o, kkeeyy--
- sseeqq differs from kkeeyynnaammee above in that strings denoting an
- entire key sequence may be specified by placing the
- sequence within double quotes. Some GNU Emacs style key
- escapes can be used, as in the following example, but the
- symbolic character names are not recognized.
-
- "\C-u": universal-argument
- "\C-x\C-r": re-read-init-file
- "\e[11~": "Function Key 1"
-
- In this example, _C_-_u is again bound to the function uunnii--
- vveerrssaall--aarrgguummeenntt. _C_-_x _C_-_r is bound to the function
- rree--rreeaadd--iinniitt--ffiillee, and _E_S_C _[ _1 _1 _~ is bound to insert the
- text ``Function Key 1''.
-
- The full set of GNU Emacs style escape sequences available
- when specifying key sequences is
- \\CC-- control prefix
- \\MM-- meta prefix
- \\ee an escape character
- \\\\ backslash
- \\"" literal ", a double quote
- \\'' literal ', a single quote
-
- In addition to the GNU Emacs style escape sequences, a
- second set of backslash escapes is available:
- \\aa alert (bell)
- \\bb backspace
- \\dd delete
- \\ff form feed
- \\nn newline
- \\rr carriage return
- \\tt horizontal tab
- \\vv vertical tab
- \\_n_n_n the eight-bit character whose value is the
- octal value _n_n_n (one to three digits)
- \\xx_H_H the eight-bit character whose value is the
- hexadecimal value _H_H (one or two hex digits)
-
- When entering the text of a macro, single or double quotes
- should be used to indicate a macro definition. Unquoted
- text is assumed to be a function name. In the macro body,
- the backslash escapes described above are expanded. Back-
- slash will quote any other character in the macro text,
- including " and '.
-
- BBaasshh allows the current readline key bindings to be dis-
- played or modified with the bbiinndd builtin command. The
- editing mode may be switched during interactive use by
- using the --oo option to the sseett builtin command. Other
- programs using this library provide similar mechanisms.
- The _i_n_p_u_t_r_c file may be edited and re-read if a program
- does not provide any other means to incorporate new bind-
- ings.
-
- VVaarriiaabblleess
- Readline has variables that can be used to further cus-
- tomize its behavior. A variable may be set in the _i_n_p_u_t_r_c
- file with a statement of the form
-
- sseett _v_a_r_i_a_b_l_e_-_n_a_m_e _v_a_l_u_e
-
- Except where noted, readline variables can take the values
- OOnn or OOffff (without regard to case). The variables and
- their default values are:
-
- bbeellll--ssttyyllee ((aauuddiibbllee))
- Controls what happens when readline wants to ring
- the terminal bell. If set to nnoonnee, readline never
- rings the bell. If set to vviissiibbllee, readline uses a
- visible bell if one is available. If set to aauuddii--
- bbllee, readline attempts to ring the terminal's bell.
- ccoommmmeenntt--bbeeggiinn ((````##''''))
- The string that is inserted in vvii mode when the
- iinnsseerrtt--ccoommmmeenntt command is executed. This command
- is bound to MM--## in emacs mode and to ## in vi com-
- mand mode.
- ccoommpplleettiioonn--iiggnnoorree--ccaassee ((OOffff))
- If set to OOnn, readline performs filename matching
- and completion in a case-insensitive fashion.
- ccoommpplleettiioonn--qquueerryy--iitteemmss ((110000))
- This determines when the user is queried about
- viewing the number of possible completions gener-
- ated by the ppoossssiibbllee--ccoommpplleettiioonnss command. It may
- be set to any integer value greater than or equal
- to zero. If the number of possible completions is
- greater than or equal to the value of this vari-
- able, the user is asked whether or not he wishes to
- view them; otherwise they are simply listed on the
- terminal.
- ccoonnvveerrtt--mmeettaa ((OOnn))
- If set to OOnn, readline will convert characters with
- the eighth bit set to an ASCII key sequence by
- stripping the eighth bit and prefixing it with an
- escape character (in effect, using escape as the
- _m_e_t_a _p_r_e_f_i_x).
- ddiissaabbllee--ccoommpplleettiioonn ((OOffff))
- If set to OOnn, readline will inhibit word comple-
- tion. Completion characters will be inserted into
- the line as if they had been mapped to sseellff--iinnsseerrtt.
- eeddiittiinngg--mmooddee ((eemmaaccss))
- Controls whether readline begins with a set of key
- bindings similar to emacs or vi. eeddiittiinngg--mmooddee can
- be set to either eemmaaccss or vvii.
- eennaabbllee--kkeeyyppaadd ((OOffff))
- When set to OOnn, readline will try to enable the
- application keypad when it is called. Some systems
- need this to enable the arrow keys.
- eexxppaanndd--ttiillddee ((OOffff))
- If set to oonn, tilde expansion is performed when
- readline attempts word completion.
- hhiissttoorryy--pprreesseerrvvee--ppooiinntt
- If set to oonn, the history code attempts to place
- point at the same location on each history line
- retrived with pprreevviioouuss--hhiissttoorryy or nneexxtt--hhiissttoorryy.
- hhoorriizzoonnttaall--ssccrroollll--mmooddee ((OOffff))
- When set to OOnn, makes readline use a single line
- for display, scrolling the input horizontally on a
- single screen line when it becomes longer than the
- screen width rather than wrapping to a new line.
- iinnppuutt--mmeettaa ((OOffff))
- If set to OOnn, readline will enable eight-bit input
- (that is, it will not clear the eighth bit in the
- characters it reads), regardless of what the termi-
- nal claims it can support. The name mmeettaa--ffllaagg is a
- synonym for this variable.
- iisseeaarrcchh--tteerrmmiinnaattoorrss ((````CC--[[ CC--JJ''''))
- The string of characters that should terminate an
- incremental search without subsequently executing
- the character as a command. If this variable has
- not been given a value, the characters _E_S_C and _C_-_J
- will terminate an incremental search.
- kkeeyymmaapp ((eemmaaccss))
- Set the current readline keymap. The set of legal
- keymap names is _e_m_a_c_s_, _e_m_a_c_s_-_s_t_a_n_d_a_r_d_, _e_m_a_c_s_-_m_e_t_a_,
- _e_m_a_c_s_-_c_t_l_x_, _v_i_, _v_i_-_m_o_v_e_, _v_i_-_c_o_m_m_a_n_d, and _v_i_-_i_n_s_e_r_t.
- _v_i is equivalent to _v_i_-_c_o_m_m_a_n_d; _e_m_a_c_s is equivalent
- to _e_m_a_c_s_-_s_t_a_n_d_a_r_d. The default value is _e_m_a_c_s.
- The value of eeddiittiinngg--mmooddee also affects the default
- keymap.
- mmaarrkk--ddiirreeccttoorriieess ((OOnn))
- If set to OOnn, completed directory names have a
- slash appended.
- mmaarrkk--mmooddiiffiieedd--lliinneess ((OOffff))
- If set to OOnn, history lines that have been modified
- are displayed with a preceding asterisk (**).
- mmaarrkk--ssyymmlliinnkkeedd--ddiirreeccttoorriieess ((OOffff))
- If set to OOnn, completed names which are symbolic
- links to directories have a slash appended (subject
- to the value of mmaarrkk--ddiirreeccttoorriieess).
- mmaattcchh--hhiiddddeenn--ffiilleess ((OOnn))
- This variable, when set to OOnn, causes readline to
- match files whose names begin with a `.' (hidden
- files) when performing filename completion, unless
- the leading `.' is supplied by the user in the
- filename to be completed.
- oouuttppuutt--mmeettaa ((OOffff))
- If set to OOnn, readline will display characters with
- the eighth bit set directly rather than as a meta-
- prefixed escape sequence.
- ppaaggee--ccoommpplleettiioonnss ((OOnn))
- If set to OOnn, readline uses an internal _m_o_r_e-like
- pager to display a screenful of possible comple-
- tions at a time.
- pprriinntt--ccoommpplleettiioonnss--hhoorriizzoonnttaallllyy ((OOffff))
- If set to OOnn, readline will display completions
- with matches sorted horizontally in alphabetical
- order, rather than down the screen.
- sshhooww--aallll--iiff--aammbbiigguuoouuss ((OOffff))
- This alters the default behavior of the completion
- functions. If set to oonn, words which have more
- than one possible completion cause the matches to
- be listed immediately instead of ringing the bell.
- vviissiibbllee--ssttaattss ((OOffff))
- If set to OOnn, a character denoting a file's type as
- reported by _s_t_a_t(2) is appended to the filename
- when listing possible completions.
-
- CCoonnddiittiioonnaall CCoonnssttrruuccttss
- Readline implements a facility similar in spirit to the
- conditional compilation features of the C preprocessor
- which allows key bindings and variable settings to be per-
- formed as the result of tests. There are four parser
- directives used.
-
- $$iiff The $$iiff construct allows bindings to be made based
- on the editing mode, the terminal being used, or
- the application using readline. The text of the
- test extends to the end of the line; no characters
- are required to isolate it.
-
- mmooddee The mmooddee== form of the $$iiff directive is used
- to test whether readline is in emacs or vi
- mode. This may be used in conjunction with
- the sseett kkeeyymmaapp command, for instance, to set
- bindings in the _e_m_a_c_s_-_s_t_a_n_d_a_r_d and _e_m_a_c_s_-
- _c_t_l_x keymaps only if readline is starting
- out in emacs mode.
-
- tteerrmm The tteerrmm== form may be used to include termi-
- nal-specific key bindings, perhaps to bind
- the key sequences output by the terminal's
- function keys. The word on the right side
- of the == is tested against the full name of
- the terminal and the portion of the terminal
- name before the first --. This allows _s_u_n to
- match both _s_u_n and _s_u_n_-_c_m_d, for instance.
-
- aapppplliiccaattiioonn
- The aapppplliiccaattiioonn construct is used to include
- application-specific settings. Each program
- using the readline library sets the _a_p_p_l_i_c_a_-
- _t_i_o_n _n_a_m_e, and an initialization file can
- test for a particular value. This could be
- used to bind key sequences to functions use-
- ful for a specific program. For instance,
- the following command adds a key sequence
- that quotes the current or previous word in
- Bash:
-
- $$iiff Bash
- # Quote the current or previous word
- "\C-xq": "\eb\"\ef\""
- $$eennddiiff
-
- $$eennddiiff This command, as seen in the previous example, ter-
- minates an $$iiff command.
-
- $$eellssee Commands in this branch of the $$iiff directive are
- executed if the test fails.
-
- $$iinncclluuddee
- This directive takes a single filename as an argu-
- ment and reads commands and bindings from that
- file. For example, the following directive would
- read _/_e_t_c_/_i_n_p_u_t_r_c:
-
- $$iinncclluuddee _/_e_t_c_/_i_n_p_u_t_r_c
-
-SSEEAARRCCHHIINNGG
- Readline provides commands for searching through the com-
- mand history for lines containing a specified string.
- There are two search modes: _i_n_c_r_e_m_e_n_t_a_l and _n_o_n_-_i_n_c_r_e_m_e_n_-
- _t_a_l.
-
- Incremental searches begin before the user has finished
- typing the search string. As each character of the search
- string is typed, readline displays the next entry from the
- history matching the string typed so far. An incremental
- search requires only as many characters as needed to find
- the desired history entry. To search backward in the his-
- tory for a particular string, type CC--rr. Typing CC--ss
- searches forward through the history. The characters pre-
- sent in the value of the iisseeaarrcchh--tteerrmmiinnaattoorrss variable are
- used to terminate an incremental search. If that variable
- has not been assigned a value the _E_s_c_a_p_e and CC--JJ charac-
- ters will terminate an incremental search. CC--GG will abort
- an incremental search and restore the original line. When
- the search is terminated, the history entry containing the
- search string becomes the current line.
-
- To find other matching entries in the history list, type
- CC--ss or CC--rr as appropriate. This will search backward or
- forward in the history for the next line matching the
- search string typed so far. Any other key sequence bound
- to a readline command will terminate the search and exe-
- cute that command. For instance, a newline will terminate
- the search and accept the line, thereby executing the com-
- mand from the history list. A movement command will ter-
- minate the search, make the last line found the current
- line, and begin editing.
-
- Non-incremental searches read the entire search string
- before starting to search for matching history lines. The
- search string may be typed by the user or be part of the
- contents of the current line.
-
-EEDDIITTIINNGG CCOOMMMMAANNDDSS
- The following is a list of the names of the commands and
- the default key sequences to which they are bound. Com-
- mand names without an accompanying key sequence are
- unbound by default.
-
- In the following descriptions, _p_o_i_n_t refers to the current
- cursor position, and _m_a_r_k refers to a cursor position
- saved by the sseett--mmaarrkk command. The text between the point
- and mark is referred to as the _r_e_g_i_o_n.
-
- CCoommmmaannddss ffoorr MMoovviinngg
- bbeeggiinnnniinngg--ooff--lliinnee ((CC--aa))
- Move to the start of the current line.
- eenndd--ooff--lliinnee ((CC--ee))
- Move to the end of the line.
- ffoorrwwaarrdd--cchhaarr ((CC--ff))
- Move forward a character.
- bbaacckkwwaarrdd--cchhaarr ((CC--bb))
- Move back a character.
- ffoorrwwaarrdd--wwoorrdd ((MM--ff))
- Move forward to the end of the next word. Words
- are composed of alphanumeric characters (letters
- and digits).
- bbaacckkwwaarrdd--wwoorrdd ((MM--bb))
- Move back to the start of the current or previous
- word. Words are composed of alphanumeric charac-
- ters (letters and digits).
- cclleeaarr--ssccrreeeenn ((CC--ll))
- Clear the screen leaving the current line at the
- top of the screen. With an argument, refresh the
- current line without clearing the screen.
- rreeddrraaww--ccuurrrreenntt--lliinnee
- Refresh the current line.
-
- CCoommmmaannddss ffoorr MMaanniippuullaattiinngg tthhee HHiissttoorryy
- aacccceepptt--lliinnee ((NNeewwlliinnee,, RReettuurrnn))
- Accept the line regardless of where the cursor is.
- If this line is non-empty, it may be added to the
- history list for future recall with aadddd__hhiissttoorryy(()).
- If the line is a modified history line, the history
- line is restored to its original state.
- pprreevviioouuss--hhiissttoorryy ((CC--pp))
- Fetch the previous command from the history list,
- moving back in the list.
- nneexxtt--hhiissttoorryy ((CC--nn))
- Fetch the next command from the history list, mov-
- ing forward in the list.
- bbeeggiinnnniinngg--ooff--hhiissttoorryy ((MM--<<))
- Move to the first line in the history.
- eenndd--ooff--hhiissttoorryy ((MM-->>))
- Move to the end of the input history, i.e., the
- line currently being entered.
- rreevveerrssee--sseeaarrcchh--hhiissttoorryy ((CC--rr))
- Search backward starting at the current line and
- moving `up' through the history as necessary. This
- is an incremental search.
- ffoorrwwaarrdd--sseeaarrcchh--hhiissttoorryy ((CC--ss))
- Search forward starting at the current line and
- moving `down' through the history as necessary.
- This is an incremental search.
- nnoonn--iinnccrreemmeennttaall--rreevveerrssee--sseeaarrcchh--hhiissttoorryy ((MM--pp))
- Search backward through the history starting at the
- current line using a non-incremental search for a
- string supplied by the user.
- nnoonn--iinnccrreemmeennttaall--ffoorrwwaarrdd--sseeaarrcchh--hhiissttoorryy ((MM--nn))
- Search forward through the history using a non-
- incremental search for a string supplied by the
- user.
- hhiissttoorryy--sseeaarrcchh--ffoorrwwaarrdd
- Search forward through the history for the string
- of characters between the start of the current line
- and the current cursor position (the _p_o_i_n_t). This
- is a non-incremental search.
- hhiissttoorryy--sseeaarrcchh--bbaacckkwwaarrdd
- Search backward through the history for the string
- of characters between the start of the current line
- and the point. This is a non-incremental search.
- yyaannkk--nntthh--aarrgg ((MM--CC--yy))
- Insert the first argument to the previous command
- (usually the second word on the previous line) at
- point. With an argument _n, insert the _nth word
- from the previous command (the words in the previ-
- ous command begin with word 0). A negative argu-
- ment inserts the _nth word from the end of the pre-
- vious command.
- yyaannkk--llaasstt--aarrgg ((MM--..,, MM--__))
- Insert the last argument to the previous command
- (the last word of the previous history entry).
- With an argument, behave exactly like yyaannkk--nntthh--aarrgg.
- Successive calls to yyaannkk--llaasstt--aarrgg move back through
- the history list, inserting the last argument of
- each line in turn.
-
- CCoommmmaannddss ffoorr CChhaannggiinngg TTeexxtt
- ddeelleettee--cchhaarr ((CC--dd))
- Delete the character at point. If point is at the
- beginning of the line, there are no characters in
- the line, and the last character typed was not
- bound to ddeelleettee--cchhaarr, then return EEOOFF.
- bbaacckkwwaarrdd--ddeelleettee--cchhaarr ((RRuubboouutt))
- Delete the character behind the cursor. When given
- a numeric argument, save the deleted text on the
- kill ring.
- ffoorrwwaarrdd--bbaacckkwwaarrdd--ddeelleettee--cchhaarr
- Delete the character under the cursor, unless the
- cursor is at the end of the line, in which case the
- character behind the cursor is deleted.
- qquuootteedd--iinnsseerrtt ((CC--qq,, CC--vv))
- Add the next character that you type to the line
- verbatim. This is how to insert characters like
- CC--qq, for example.
- ttaabb--iinnsseerrtt ((MM--TTAABB))
- Insert a tab character.
- sseellff--iinnsseerrtt ((aa,, bb,, AA,, 11,, !!,, ......))
- Insert the character typed.
- ttrraannssppoossee--cchhaarrss ((CC--tt))
- Drag the character before point forward over the
- character at point, moving point forward as well.
- If point is at the end of the line, then this
- transposes the two characters before point. Nega-
- tive arguments have no effect.
- ttrraannssppoossee--wwoorrddss ((MM--tt))
- Drag the word before point past the word after
- point, moving point over that word as well. If
- point is at the end of the line, this transposes
- the last two words on the line.
- uuppccaassee--wwoorrdd ((MM--uu))
- Uppercase the current (or following) word. With a
- negative argument, uppercase the previous word, but
- do not move point.
- ddoowwnnccaassee--wwoorrdd ((MM--ll))
- Lowercase the current (or following) word. With a
- negative argument, lowercase the previous word, but
- do not move point.
- ccaappiittaalliizzee--wwoorrdd ((MM--cc))
- Capitalize the current (or following) word. With a
- negative argument, capitalize the previous word,
- but do not move point.
- oovveerrwwrriittee--mmooddee
- Toggle overwrite mode. With an explicit positive
- numeric argument, switches to overwrite mode. With
- an explicit non-positive numeric argument, switches
- to insert mode. This command affects only eemmaaccss
- mode; vvii mode does overwrite differently. Each
- call to _r_e_a_d_l_i_n_e_(_) starts in insert mode. In over-
- write mode, characters bound to sseellff--iinnsseerrtt replace
- the text at point rather than pushing the text to
- the right. Characters bound to bbaacckk--
- wwaarrdd--ddeelleettee--cchhaarr replace the character before point
- with a space. By default, this command is unbound.
-
- KKiilllliinngg aanndd YYaannkkiinngg
- kkiillll--lliinnee ((CC--kk))
- Kill the text from point to the end of the line.
- bbaacckkwwaarrdd--kkiillll--lliinnee ((CC--xx RRuubboouutt))
- Kill backward to the beginning of the line.
- uunniixx--lliinnee--ddiissccaarrdd ((CC--uu))
- Kill backward from point to the beginning of the
- line. The killed text is saved on the kill-ring.
- kkiillll--wwhhoollee--lliinnee
- Kill all characters on the current line, no matter
- where point is.
- kkiillll--wwoorrdd ((MM--dd))
- Kill from point the end of the current word, or if
- between words, to the end of the next word. Word
- boundaries are the same as those used by ffoorr--
- wwaarrdd--wwoorrdd.
- bbaacckkwwaarrdd--kkiillll--wwoorrdd ((MM--RRuubboouutt))
- Kill the word behind point. Word boundaries are
- the same as those used by bbaacckkwwaarrdd--wwoorrdd.
- uunniixx--wwoorrdd--rruubboouutt ((CC--ww))
- Kill the word behind point, using white space as a
- word boundary. The killed text is saved on the
- kill-ring.
- ddeelleettee--hhoorriizzoonnttaall--ssppaaccee ((MM--\\))
- Delete all spaces and tabs around point.
- kkiillll--rreeggiioonn
- Kill the text between the point and _m_a_r_k (saved
- cursor position). This text is referred to as the
- _r_e_g_i_o_n.
- ccooppyy--rreeggiioonn--aass--kkiillll
- Copy the text in the region to the kill buffer.
- ccooppyy--bbaacckkwwaarrdd--wwoorrdd
- Copy the word before point to the kill buffer. The
- word boundaries are the same as bbaacckkwwaarrdd--wwoorrdd.
- ccooppyy--ffoorrwwaarrdd--wwoorrdd
- Copy the word following point to the kill buffer.
- The word boundaries are the same as ffoorrwwaarrdd--wwoorrdd.
- yyaannkk ((CC--yy))
- Yank the top of the kill ring into the buffer at
- point.
- yyaannkk--ppoopp ((MM--yy))
- Rotate the kill ring, and yank the new top. Only
- works following yyaannkk or yyaannkk--ppoopp.
-
- NNuummeerriicc AArrgguummeennttss
- ddiiggiitt--aarrgguummeenntt ((MM--00,, MM--11,, ......,, MM----))
- Add this digit to the argument already accumulat-
- ing, or start a new argument. M-- starts a nega-
- tive argument.
- uunniivveerrssaall--aarrgguummeenntt
- This is another way to specify an argument. If
- this command is followed by one or more digits,
- optionally with a leading minus sign, those digits
- define the argument. If the command is followed by
- digits, executing uunniivveerrssaall--aarrgguummeenntt again ends the
- numeric argument, but is otherwise ignored. As a
- special case, if this command is immediately fol-
- lowed by a character that is neither a digit or
- minus sign, the argument count for the next command
- is multiplied by four. The argument count is ini-
- tially one, so executing this function the first
- time makes the argument count four, a second time
- makes the argument count sixteen, and so on.
-
- CCoommpplleettiinngg
- ccoommpplleettee ((TTAABB))
- Attempt to perform completion on the text before
- point. The actual completion performed is applica-
- tion-specific. BBaasshh, for instance, attempts com-
- pletion treating the text as a variable (if the
- text begins with $$), username (if the text begins
- with ~~), hostname (if the text begins with @@), or
- command (including aliases and functions) in turn.
- If none of these produces a match, filename comple-
- tion is attempted. GGddbb, on the other hand, allows
- completion of program functions and variables, and
- only attempts filename completion under certain
- circumstances.
- ppoossssiibbllee--ccoommpplleettiioonnss ((MM--??))
- List the possible completions of the text before
- point.
- iinnsseerrtt--ccoommpplleettiioonnss ((MM--**))
- Insert all completions of the text before point
- that would have been generated by ppoossssiibbllee--ccoommppllee--
- ttiioonnss.
- mmeennuu--ccoommpplleettee
- Similar to ccoommpplleettee, but replaces the word to be
- completed with a single match from the list of pos-
- sible completions. Repeated execution of mmeennuu--ccoomm--
- pplleettee steps through the list of possible comple-
- tions, inserting each match in turn. At the end of
- the list of completions, the bell is rung (subject
- to the setting of 00aanndd tthhee oorriiggiinnaall tteexxtt iiss
- rreessttoorreedd.. AAnn aarrgguummeenntt ooff _n mmoovveess _n ppoossiittiioonnss ffoorr--
- wwaarrdd iinn tthhee lliisstt ooff mmaattcchheess;; aa nneeggaattiivvee aarrgguummeenntt
- mmaayy bbee uusseedd ttoo mmoovvee bbaacckkwwaarrdd tthhrroouugghh tthhee lliisstt..
- TThhiiss ccoommmmaanndd iiss iinntteennddeedd ttoo bbee bboouunndd ttoo TTAABB,, bbuutt iiss
- uunnbboouunndd bbyy ddeeffaauulltt..
- ddeelleettee--cchhaarr--oorr--lliisstt
- Deletes the character under the cursor if not at
- the beginning or end of the line (like ddeelleettee--
- cchhaarr). If at the end of the line, behaves identi-
- cally to ppoossssiibbllee--ccoommpplleettiioonnss.
-
- KKeeyybbooaarrdd MMaaccrrooss
- ssttaarrtt--kkbbdd--mmaaccrroo ((CC--xx (())
- Begin saving the characters typed into the current
- keyboard macro.
- eenndd--kkbbdd--mmaaccrroo ((CC--xx ))))
- Stop saving the characters typed into the current
- keyboard macro and store the definition.
- ccaallll--llaasstt--kkbbdd--mmaaccrroo ((CC--xx ee))
- Re-execute the last keyboard macro defined, by mak-
- ing the characters in the macro appear as if typed
- at the keyboard.
-
- MMiisscceellllaanneeoouuss
- rree--rreeaadd--iinniitt--ffiillee ((CC--xx CC--rr))
- Read in the contents of the _i_n_p_u_t_r_c file, and
- incorporate any bindings or variable assignments
- found there.
- aabboorrtt ((CC--gg))
- Abort the current editing command and ring the ter-
- minal's bell (subject to the setting of
- bbeellll--ssttyyllee).
- ddoo--uuppppeerrccaassee--vveerrssiioonn ((MM--aa,, MM--bb,, MM--_x,, ......))
- If the metafied character _x is lowercase, run the
- command that is bound to the corresponding upper-
- case character.
- pprreeffiixx--mmeettaa ((EESSCC))
- Metafy the next character typed. EESSCC ff is equiva-
- lent to MMeettaa--ff.
- uunnddoo ((CC--__,, CC--xx CC--uu))
- Incremental undo, separately remembered for each
- line.
- rreevveerrtt--lliinnee ((MM--rr))
- Undo all changes made to this line. This is like
- executing the uunnddoo command enough times to return
- the line to its initial state.
- ttiillddee--eexxppaanndd ((MM--&&))
- Perform tilde expansion on the current word.
- sseett--mmaarrkk ((CC--@@,, MM--<<ssppaaccee>>))
- Set the mark to the point. If a numeric argument
- is supplied, the mark is set to that position.
- eexxcchhaannggee--ppooiinntt--aanndd--mmaarrkk ((CC--xx CC--xx))
- Swap the point with the mark. The current cursor
- position is set to the saved position, and the old
- cursor position is saved as the mark.
- cchhaarraacctteerr--sseeaarrcchh ((CC--]]))
- A character is read and point is moved to the next
- occurrence of that character. A negative count
- searches for previous occurrences.
- cchhaarraacctteerr--sseeaarrcchh--bbaacckkwwaarrdd ((MM--CC--]]))
- A character is read and point is moved to the pre-
- vious occurrence of that character. A negative
- count searches for subsequent occurrences.
- iinnsseerrtt--ccoommmmeenntt ((MM--##))
- Without a numeric argument, the value of the read-
- line ccoommmmeenntt--bbeeggiinn variable is inserted at the
- beginning of the current line. If a numeric argu-
- ment is supplied, this command acts as a toggle:
- if the characters at the beginning of the line do
- not match the value of ccoommmmeenntt--bbeeggiinn, the value is
- inserted, otherwise the characters in ccoommmmeenntt--bbeeggiinn
- are deleted from the beginning of the line. In
- either case, the line is accepted as if a newline
- had been typed. The default value of ccoommmmeenntt--bbeeggiinn
- makes the current line a shell comment. If a
- numeric argument causes the comment character to be
- removed, the line will be executed by the shell.
- dduummpp--ffuunnccttiioonnss
- Print all of the functions and their key bindings
- to the readline output stream. If a numeric
- argument is supplied, the output is formatted in
- such a way that it can be made part of an _i_n_p_u_t_r_c
- file.
- dduummpp--vvaarriiaabblleess
- Print all of the settable variables and their val-
- ues to the readline output stream. If a numeric
- argument is supplied, the output is formatted in
- such a way that it can be made part of an _i_n_p_u_t_r_c
- file.
- dduummpp--mmaaccrrooss
- Print all of the readline key sequences bound to
- macros and the strings they ouput. If a numeric
- argument is supplied, the output is formatted in
- such a way that it can be made part of an _i_n_p_u_t_r_c
- file.
- eemmaaccss--eeddiittiinngg--mmooddee ((CC--ee))
- When in vvii command mode, this causes a switch to
- eemmaaccss editing mode.
- vvii--eeddiittiinngg--mmooddee ((MM--CC--jj))
- When in eemmaaccss editing mode, this causes a switch to
- vvii editing mode.
-
-DDEEFFAAUULLTT KKEEYY BBIINNDDIINNGGSS
- The following is a list of the default emacs and vi bind-
- ings. Characters with the eighth bit set are written as
- M-<character>, and are referred to as _m_e_t_a_f_i_e_d characters.
- The printable ASCII characters not mentioned in the list
- of emacs standard bindings are bound to the sseellff--iinnsseerrtt
- function, which just inserts the given character into the
- input line. In vi insertion mode, all characters not
- specifically mentioned are bound to sseellff--iinnsseerrtt. Charac-
- ters assigned to signal generation by _s_t_t_y(1) or the ter-
- minal driver, such as C-Z or C-C, retain that function.
- Upper and lower case metafied characters are bound to the
- same function in the emacs mode meta keymap. The remain-
- ing characters are unbound, which causes readline to ring
- the bell (subject to the setting of the bbeellll--ssttyyllee vari-
- able).
-
- EEmmaaccss MMooddee
- Emacs Standard bindings
-
- "C-@" set-mark
- "C-A" beginning-of-line
- "C-B" backward-char
- "C-D" delete-char
- "C-E" end-of-line
- "C-F" forward-char
- "C-G" abort
- "C-H" backward-delete-char
- "C-I" complete
- "C-J" accept-line
- "C-K" kill-line
- "C-L" clear-screen
- "C-M" accept-line
- "C-N" next-history
- "C-P" previous-history
- "C-Q" quoted-insert
- "C-R" reverse-search-history
- "C-S" forward-search-history
- "C-T" transpose-chars
- "C-U" unix-line-discard
- "C-V" quoted-insert
- "C-W" unix-word-rubout
- "C-Y" yank
- "C-]" character-search
- "C-_" undo
- " " to "/" self-insert
- "0" to "9" self-insert
- ":" to "~" self-insert
- "C-?" backward-delete-char
-
- Emacs Meta bindings
-
- "M-C-G" abort
- "M-C-H" backward-kill-word
- "M-C-I" tab-insert
- "M-C-J" vi-editing-mode
- "M-C-M" vi-editing-mode
- "M-C-R" revert-line
- "M-C-Y" yank-nth-arg
- "M-C-[" complete
- "M-C-]" character-search-backward
- "M-space" set-mark
- "M-#" insert-comment
- "M-&" tilde-expand
- "M-*" insert-completions
- "M--" digit-argument
- "M-." yank-last-arg
- "M-0" digit-argument
- "M-1" digit-argument
- "M-2" digit-argument
- "M-3" digit-argument
- "M-4" digit-argument
- "M-5" digit-argument
- "M-6" digit-argument
- "M-7" digit-argument
- "M-8" digit-argument
- "M-9" digit-argument
- "M-<" beginning-of-history
- "M-=" possible-completions
- "M->" end-of-history
- "M-?" possible-completions
- "M-B" backward-word
- "M-C" capitalize-word
- "M-D" kill-word
- "M-F" forward-word
- "M-L" downcase-word
- "M-N" non-incremental-forward-search-history
- "M-P" non-incremental-reverse-search-history
- "M-R" revert-line
- "M-T" transpose-words
- "M-U" upcase-word
- "M-Y" yank-pop
- "M-\" delete-horizontal-space
- "M-~" tilde-expand
- "M-C-?" backward-kill-word
- "M-_" yank-last-arg
-
- Emacs Control-X bindings
-
- "C-XC-G" abort
- "C-XC-R" re-read-init-file
- "C-XC-U" undo
- "C-XC-X" exchange-point-and-mark
- "C-X(" start-kbd-macro
- "C-X)" end-kbd-macro
- "C-XE" call-last-kbd-macro
- "C-XC-?" backward-kill-line
-
-
- VVII MMooddee bbiinnddiinnggss
- VI Insert Mode functions
-
- "C-D" vi-eof-maybe
- "C-H" backward-delete-char
- "C-I" complete
- "C-J" accept-line
- "C-M" accept-line
- "C-R" reverse-search-history
- "C-S" forward-search-history
- "C-T" transpose-chars
- "C-U" unix-line-discard
- "C-V" quoted-insert
- "C-W" unix-word-rubout
- "C-Y" yank
- "C-[" vi-movement-mode
- "C-_" undo
- " " to "~" self-insert
- "C-?" backward-delete-char
-
- VI Command Mode functions
-
- "C-D" vi-eof-maybe
- "C-E" emacs-editing-mode
- "C-G" abort
- "C-H" backward-char
- "C-J" accept-line
- "C-K" kill-line
- "C-L" clear-screen
- "C-M" accept-line
- "C-N" next-history
- "C-P" previous-history
- "C-Q" quoted-insert
- "C-R" reverse-search-history
- "C-S" forward-search-history
- "C-T" transpose-chars
- "C-U" unix-line-discard
- "C-V" quoted-insert
- "C-W" unix-word-rubout
- "C-Y" yank
- "C-_" vi-undo
- " " forward-char
- "#" insert-comment
- "$" end-of-line
- "%" vi-match
- "&" vi-tilde-expand
- "*" vi-complete
- "+" next-history
- "," vi-char-search
- "-" previous-history
- "." vi-redo
- "/" vi-search
- "0" beginning-of-line
- "1" to "9" vi-arg-digit
- ";" vi-char-search
- "=" vi-complete
- "?" vi-search
- "A" vi-append-eol
- "B" vi-prev-word
- "C" vi-change-to
- "D" vi-delete-to
- "E" vi-end-word
- "F" vi-char-search
- "G" vi-fetch-history
- "I" vi-insert-beg
- "N" vi-search-again
- "P" vi-put
- "R" vi-replace
- "S" vi-subst
- "T" vi-char-search
- "U" revert-line
- "W" vi-next-word
- "X" backward-delete-char
- "Y" vi-yank-to
- "\" vi-complete
- "^" vi-first-print
- "_" vi-yank-arg
- "`" vi-goto-mark
- "a" vi-append-mode
- "b" vi-prev-word
- "c" vi-change-to
- "d" vi-delete-to
- "e" vi-end-word
- "f" vi-char-search
- "h" backward-char
- "i" vi-insertion-mode
- "j" next-history
- "k" prev-history
- "l" forward-char
- "m" vi-set-mark
- "n" vi-search-again
- "p" vi-put
- "r" vi-change-char
- "s" vi-subst
- "t" vi-char-search
- "u" vi-undo
- "w" vi-next-word
- "x" vi-delete
- "y" vi-yank-to
- "|" vi-column
- "~" vi-change-case
-
-SSEEEE AALLSSOO
- _T_h_e _G_n_u _R_e_a_d_l_i_n_e _L_i_b_r_a_r_y, Brian Fox and Chet Ramey
- _T_h_e _G_n_u _H_i_s_t_o_r_y _L_i_b_r_a_r_y, Brian Fox and Chet Ramey
- _b_a_s_h(1)
-
-FFIILLEESS
- _~_/_._i_n_p_u_t_r_c
- Individual rreeaaddlliinnee initialization file
-
-AAUUTTHHOORRSS
- Brian Fox, Free Software Foundation
- bfox@gnu.org
-
- Chet Ramey, Case Western Reserve University
- chet@ins.CWRU.Edu
-
-BBUUGG RREEPPOORRTTSS
- If you find a bug in rreeaaddlliinnee,, you should report it. But
- first, you should make sure that it really is a bug, and
- that it appears in the latest version of the rreeaaddlliinnee
- library that you have.
-
- Once you have determined that a bug actually exists, mail
- a bug report to _b_u_g_-_r_e_a_d_l_i_n_e@_g_n_u_._o_r_g. If you have a fix,
- you are welcome to mail that as well! Suggestions and
- `philosophical' bug reports may be mailed to _b_u_g_-_r_e_a_d_-
- _l_i_n_e@_g_n_u_._o_r_g or posted to the Usenet newsgroup
- ggnnuu..bbaasshh..bbuugg.
-
- Comments and bug reports concerning this manual page
- should be directed to _c_h_e_t_@_i_n_s_._C_W_R_U_._E_d_u.
-
-BBUUGGSS
- It's too big and too slow.
-
-
-
-GNU Readline 4.3 2002 January 22 READLINE(3)