--- embedaddon/readline/doc/readline.0 2014/07/30 08:16:46 1.1.1.1 +++ embedaddon/readline/doc/readline.0 2021/03/17 01:01:01 1.1.1.2 @@ -1,76 +1,76 @@ -READLINE(3) READLINE(3) +READLINE(3) Library Functions Manual READLINE(3) -NNAAMMEE +NAME readline - get a line from a user with editing -SSYYNNOOPPSSIISS - ##iinncclluuddee <> - ##iinncclluuddee <> - ##iinncclluuddee <> +SYNOPSIS + #include  + #include  + #include  - _c_h_a_r _* - rreeaaddlliinnee (_c_o_n_s_t _c_h_a_r _*_p_r_o_m_p_t); + char * + readline (const char *prompt); -CCOOPPYYRRIIGGHHTT - Readline is Copyright (C) 1989-2011 Free Software Foundation, Inc. +COPYRIGHT + Readline is Copyright (C) 1989-2020 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 allocated with _m_a_l_l_o_c(3); the caller must - free it when finished. The line returned has the final newline - removed, so only the text of the line remains. +DESCRIPTION + readline will read a line from the terminal and return it, using prompt + as a prompt. If prompt is NULL or the empty string, no prompt is is- + sued. The line returned is allocated with malloc(3); the caller must + free it when finished. The line returned has the final newline re- + moved, so only the text of the line remains. - rreeaaddlliinnee offers editing capabilities while the user is entering the + readline 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 additional information. + This manual page describes only the most basic use of readline. Much + more functionality is available; see The GNU Readline Library and The + GNU History Library for additional 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, +RETURN VALUE + readline returns the text of the line read. A blank line returns the + empty string. If EOF is encountered while reading a line, and the line + is empty, NULL is returned. If an EOF is read with a non-empty line, it is treated as a newline. -NNOOTTAATTIIOONN +NOTATION An Emacs-style notation is used to denote keystrokes. Control keys are - denoted by C-_k_e_y, e.g., C-n means Control-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 Control key while pressing the _x + denoted by C-key, e.g., C-n means Control-N. Similarly, meta keys are + denoted by M-key, so M-x means Meta-X. (On keyboards without a meta + key, M-x means ESC x, i.e., press the Escape key then the x key. This + makes ESC the meta prefix. The combination M-C-x means ESC-Control-x, + or press the Escape key then hold the Control 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 + Readline commands may be given numeric arguments, 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 + acts in the forward direction (e.g., kill-line) causes that command to act in a backward direction. Commands whose behavior with arguments - deviates from this are noted. + deviates from this are noted below. - 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 + When a command is described as killing text, the text deleted is saved + for possible future retrieval (yanking). The killed text is saved in a + kill ring. 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 +INITIALIZATION FILE Readline is customized by putting commands in an initialization 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. If that file does not exist or cannot be read, - the ultimate default is _/_e_t_c_/_i_n_p_u_t_r_c. When a program which uses the + (the inputrc file). The name of this file is taken from the value of + the INPUTRC environment variable. If that variable is unset, the de- + fault is ~/.inputrc. If that file does not exist or cannot be read, + the ultimate default is /etc/inputrc. 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 + 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. + Each program using this library may add its own commands and bindings. For example, placing @@ -78,463 +78,551 @@ IINNIITTIIAALLIIZZAATTIIOONN FFIILLE 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. + into the inputrc would make M-C-u execute the readline command univer- + sal-argument. - 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. + The following symbolic character names are recognized while processing + key bindings: DEL, ESC, ESCAPE, LFD, NEWLINE, RET, RETURN, RUBOUT, + SPACE, SPC, and TAB. - 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). + In addition to command names, readline allows keys to be bound to a + string that is inserted when the key is pressed (a macro). - - 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 speci- - fied 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. The name and key sequence are - separated by a colon. There can be no whitespace between the name and + Key Bindings + The syntax for controlling key bindings in the inputrc 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 speci- + fied in one of two ways: as a symbolic key name, possibly with Meta- or + Control- prefixes, or as a key sequence. The name and key sequence are + separated by a colon. There can be no whitespace between the name and the colon. - 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 + When using the form keyname:function-name or macro, keyname 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 uunniivveerrssaall--aarrgguummeenntt, - _M_-_D_E_L is bound to the function bbaacckkwwaarrdd--kkiillll--wwoorrdd, and _C_-_o is bound to - run the macro expressed on the right hand side (that is, to insert the + In the above example, C-u is bound to the function universal-argument, + M-DEL is bound to the function backward-kill-word, 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, kkeeyysseeqq 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 + In the second form, "keyseq":function-name or macro, keyseq differs + from keyname 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 uunniivveerrssaall--aarrgguummeenntt. - _C_-_x _C_-_r is bound to the function rree--rreeaadd--iinniitt--ffiillee, and _E_S_C _[ _1 _1 _~ is + In this example, C-u is again bound to the function universal-argument. + C-x C-r is bound to the function re-read-init-file, and ESC [ 1 1 ~ is bound to insert the text ``Function Key 1''. - The full set of GNU Emacs style escape sequences available when speci- + The full set of GNU Emacs style escape sequences available when speci- fying key sequences is - \\CC-- control prefix - \\MM-- meta prefix - \\ee an escape character - \\\\ backslash - \\"" literal ", a double quote - \\'' literal ', a single quote + \C- control prefix + \M- meta prefix + \e 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 + 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) + \a alert (bell) + \b backspace + \d delete + \f form feed + \n newline + \r carriage return + \t horizontal tab + \v vertical tab + \nnn the eight-bit character whose value is the octal value + nnn (one to three digits) + \xHH the eight-bit character whose value is the hexadecimal + value HH (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. Backslash will quote any other character in the + 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. Backslash will quote any other character in the macro text, including " and '. - BBaasshh allows the current readline key bindings to be displayed or modi- - fied with the bbiinndd builtin command. The editing mode may be switched - during interactive use by using the --oo option to the sseett builtin com- - mand. 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 pro- + Bash allows the current readline key bindings to be displayed or modi- + fied with the bind builtin command. The editing mode may be switched + during interactive use by using the -o option to the set builtin com- + mand. Other programs using this library provide similar mechanisms. + The inputrc file may be edited and re-read if a program does not pro- vide any other means to incorporate new bindings. - VVaarriiaabblleess + Variables Readline has variables that can be used to further customize its behav- - ior. A variable may be set in the _i_n_p_u_t_r_c file with a statement of the + ior. A variable may be set in the inputrc 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 + set variable-name value - Except where noted, readline variables can take the values OOnn or OOffff - (without regard to case). Unrecognized variable names are ignored. - When a variable value is read, empty or null values, "on" (case-insen- - sitive), and "1" are equivalent to OOnn. All other values are equivalent - to OOffff. The variables and their default values are: + Except where noted, readline variables can take the values On or Off + (without regard to case). Unrecognized variable names are ignored. + When a variable value is read, empty or null values, "on" (case-insen- + sitive), and "1" are equivalent to On. All other values are equivalent + to Off. 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 aauuddiibbllee, readline attempts to ring the terminal's bell. - bbiinndd--ttttyy--ssppeecciiaall--cchhaarrss ((OOnn)) - If set to OOnn, readline attempts to bind the control characters - treated specially by the kernel's terminal driver to their read- - line equivalents. - ccoolloorreedd--ssttaattss ((OOffff)) - If set to OOnn, readline displays possible completions using dif- - ferent colors to indicate their file type. The color defini- - tions are taken from the value of the LLSS__CCOOLLOORRSS environment + bell-style (audible) + Controls what happens when readline wants to ring the terminal + bell. If set to none, readline never rings the bell. If set to + visible, readline uses a visible bell if one is available. If + set to audible, readline attempts to ring the terminal's bell. + bind-tty-special-chars (On) + If set to On (the default), readline attempts to bind the con- + trol characters treated specially by the kernel's terminal + driver to their readline equivalents. + blink-matching-paren (Off) + If set to On, readline attempts to briefly move the cursor to an + opening parenthesis when a closing parenthesis is inserted. + colored-completion-prefix (Off) + If set to On, when listing completions, readline displays the + common prefix of the set of possible completions using a differ- + ent color. The color definitions are taken from the value of + the LS_COLORS environment variable. + colored-stats (Off) + If set to On, readline displays possible completions using dif- + ferent colors to indicate their file type. The color defini- + tions are taken from the value of the LS_COLORS environment variable. - 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 command mode. - ccoommpplleettiioonn--ddiissppllaayy--wwiiddtthh ((--11)) - The number of screen columns used to display possible matches - when performing completion. The value is ignored if it is less - than 0 or greater than the terminal screen width. A value of 0 - will cause matches to be displayed one per line. The default + comment-begin (``#'') + The string that is inserted in vi mode when the insert-comment + command is executed. This command is bound to M-# in emacs mode + and to # in vi command mode. + completion-display-width (-1) + The number of screen columns used to display possible matches + when performing completion. The value is ignored if it is less + than 0 or greater than the terminal screen width. A value of 0 + will cause matches to be displayed one per line. The default value is -1. - ccoommpplleettiioonn--iiggnnoorree--ccaassee ((OOffff)) - If set to OOnn, readline performs filename matching and completion + completion-ignore-case (Off) + If set to On, readline performs filename matching and completion in a case-insensitive fashion. - ccoommpplleettiioonn--mmaapp--ccaassee ((OOffff)) - If set to OOnn, and ccoommpplleettiioonn--iiggnnoorree--ccaassee is enabled, readline - treats hyphens (_-) and underscores (__) as equivalent when per- + completion-map-case (Off) + If set to On, and completion-ignore-case is enabled, readline + treats hyphens (-) and underscores (_) as equivalent when per- forming case-insensitive filename matching and completion. - ccoommpplleettiioonn--pprreeffiixx--ddiissppllaayy--lleennggtthh ((00)) - The length in characters of the common prefix of a list of pos- - sible completions that is displayed without modification. When - set to a value greater than zero, common prefixes longer than - this value are replaced with an ellipsis when displaying possi- + completion-prefix-display-length (0) + The length in characters of the common prefix of a list of pos- + sible completions that is displayed without modification. When + set to a value greater than zero, common prefixes longer than + this value are replaced with an ellipsis when displaying possi- ble completions. - ccoommpplleettiioonn--qquueerryy--iitteemmss ((110000)) - This determines when the user is queried about viewing the num- - ber of possible completions generated by the ppoossssiibbllee--ccoommppllee-- - ttiioonnss 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 variable, the user is - asked whether or not he wishes to view them; otherwise they are - simply listed on the terminal. A negative value causes readline - to never ask. - ccoonnvveerrtt--mmeettaa ((OOnn)) - If set to OOnn, readline will convert characters with the eighth + completion-query-items (100) + This determines when the user is queried about viewing the num- + ber of possible completions generated by the possible-comple- + tions 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 variable, readline + will ask whether or not the user wishes to view them; otherwise + they are simply listed on the terminal. A negative value causes + readline to never ask. + convert-meta (On) + If set to On, 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 completion. Completion + prefixing it with an escape character (in effect, using escape + as the meta prefix). The default is On, but readline will set + it to Off if the locale contains eight-bit characters. + disable-completion (Off) + If set to On, readline will inhibit word completion. 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 sim- - ilar to _E_m_a_c_s or _v_i. eeddiittiinngg--mmooddee can be set to either eemmaaccss or - vvii. - eecchhoo--ccoonnttrrooll--cchhaarraacctteerrss ((OOnn)) - When set to OOnn, on operating systems that indicate they support + mapped to self-insert. + echo-control-characters (On) + When set to On, on operating systems that indicate they support it, readline echoes a character corresponding to a signal gener- ated from the keyboard. - eennaabbllee--kkeeyyppaadd ((OOffff)) - When set to OOnn, readline will try to enable the application key- - pad when it is called. Some systems need this to enable the - arrow keys. - eennaabbllee--mmeettaa--kkeeyy ((OOnn)) - When set to OOnn, readline will try to enable any meta modifier + editing-mode (emacs) + Controls whether readline begins with a set of key bindings sim- + ilar to Emacs or vi. editing-mode can be set to either emacs or + vi. + emacs-mode-string (@) + If the show-mode-in-prompt variable is enabled, this string is + displayed immediately before the last line of the primary prompt + when emacs editing mode is active. The value is expanded like a + key binding, so the standard set of meta- and control prefixes + and backslash escape sequences is available. Use the \1 and \2 + escapes to begin and end sequences of non-printing characters, + which can be used to embed a terminal control sequence into the + mode string. + enable-bracketed-paste (On) + When set to On, readline will configure the terminal in a way + that will enable it to insert each paste into the editing buffer + as a single string of characters, instead of treating each char- + acter as if it had been read from the keyboard. This can pre- + vent pasted characters from being interpreted as editing com- + mands. + enable-keypad (Off) + When set to On, readline will try to enable the application key- + pad when it is called. Some systems need this to enable the ar- + row keys. + enable-meta-key (On) + When set to On, readline will try to enable any meta modifier key the terminal claims to support when it is called. On many terminals, the meta key is used to send eight-bit characters. - eexxppaanndd--ttiillddee ((OOffff)) - If set to OOnn, tilde expansion is performed when readline - attempts word completion. - hhiissttoorryy--pprreesseerrvvee--ppooiinntt ((OOffff)) - If set to OOnn, the history code attempts to place point at the - same location on each history line retrieved with pprreevviioouuss--hhiiss-- - ttoorryy or nneexxtt--hhiissttoorryy. - hhiissttoorryy--ssiizzee ((00)) + expand-tilde (Off) + If set to On, tilde expansion is performed when readline at- + tempts word completion. + history-preserve-point (Off) + If set to On, the history code attempts to place point at the + same location on each history line retrieved with previous-his- + tory or next-history. + history-size (unset) Set the maximum number of history entries saved in the history list. If set to zero, any existing history entries are deleted and no new entries are saved. If set to a value less than zero, the number of history entries is not limited. By default, the - number of history entries is not limited. - hhoorriizzoonnttaall--ssccrroollll--mmooddee ((OOffff)) - When set to OOnn, makes readline use a single line for display, + number of history entries is not limited. If an attempt is made + to set history-size to a non-numeric value, the maximum number + of history entries will be set to 500. + horizontal-scroll-mode (Off) + When set to On, 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 terminal 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 com- - mand. If this variable has not been given a value, the charac- - ters _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 + new line. This setting is automatically enabled for terminals + of height 1. + input-meta (Off) + If set to On, readline will enable eight-bit input (that is, it + will not clear the eighth bit in the characters it reads), re- + gardless of what the terminal claims it can support. The name + meta-flag is a synonym for this variable. The default is Off, + but readline will set it to On if the locale contains eight-bit + characters. + isearch-terminators (``C-[ C-J'') + The string of characters that should terminate an incremental + search without subsequently executing the character as a com- + mand. If this variable has not been given a value, the charac- + ters ESC and C-J will terminate an incremental search. + keymap (emacs) + Set the current readline keymap. The set of legal keymap names + is emacs, emacs-standard, emacs-meta, emacs-ctlx, vi, vi-move, + vi-command, and vi-insert. vi is equivalent to vi-command; + emacs is equivalent to emacs-standard. The default value is + emacs. The value of editing-mode also affects the default keymap. - kkeeyysseeqq--ttiimmeeoouutt ((550000)) - Specifies the duration _r_e_a_d_l_i_n_e will wait for a character when - reading an ambiguous key sequence (one that can form a complete + keyseq-timeout (500) + Specifies the duration readline will wait for a character when + reading an ambiguous key sequence (one that can form a complete key sequence using the input read so far, or can take additional - input to complete a longer key sequence). If no input is - received within the timeout, _r_e_a_d_l_i_n_e will use the shorter but - complete key sequence. The value is specified in milliseconds, - so a value of 1000 means that _r_e_a_d_l_i_n_e will wait one second for - additional input. If this variable is set to a value less than - or equal to zero, or to a non-numeric value, _r_e_a_d_l_i_n_e will wait - until another key is pressed to decide which key sequence to + input to complete a longer key sequence). If no input is re- + ceived within the timeout, readline will use the shorter but + complete key sequence. The value is specified in milliseconds, + so a value of 1000 means that readline will wait one second for + additional input. If this variable is set to a value less than + or equal to zero, or to a non-numeric value, readline will wait + until another key is pressed to decide which key sequence to complete. - 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 dis- - played with a preceding asterisk (**). - mmaarrkk--ssyymmlliinnkkeedd--ddiirreeccttoorriieess ((OOffff)) - If set to OOnn, completed names which are symbolic links to direc- - tories 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. If set to OOffff, the leading `.' must be + mark-directories (On) + If set to On, completed directory names have a slash appended. + mark-modified-lines (Off) + If set to On, history lines that have been modified are dis- + played with a preceding asterisk (*). + mark-symlinked-directories (Off) + If set to On, completed names which are symbolic links to direc- + tories have a slash appended (subject to the value of mark-di- + rectories). + match-hidden-files (On) + This variable, when set to On, causes readline to match files + whose names begin with a `.' (hidden files) when performing + filename completion. If set to Off, the leading `.' must be supplied by the user in the filename to be completed. - mmeennuu--ccoommpplleettee--ddiissppllaayy--pprreeffiixx ((OOffff)) - If set to OOnn, menu completion displays the common prefix of the + menu-complete-display-prefix (Off) + If set to On, menu completion displays the common prefix of the list of possible completions (which may be empty) before cycling through the list. - oouuttppuutt--mmeettaa ((OOffff)) - If set to OOnn, readline will display characters with the eighth + output-meta (Off) + If set to On, 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 dis- + The default is Off, but readline will set it to On if the locale + contains eight-bit characters. + page-completions (On) + If set to On, readline uses an internal more-like pager to dis- play a screenful of possible completions at a time. - pprriinntt--ccoommpplleettiioonnss--hhoorriizzoonnttaallllyy ((OOffff)) - If set to OOnn, readline will display completions with matches + print-completions-horizontally (Off) + If set to On, readline will display completions with matches sorted horizontally in alphabetical order, rather than down the screen. - rreevveerrtt--aallll--aatt--nneewwlliinnee ((OOffff)) - If set to OOnn, readline will undo all changes to history lines - before returning when aacccceepptt--lliinnee is executed. By default, his- + revert-all-at-newline (Off) + If set to On, readline will undo all changes to history lines + before returning when accept-line is executed. By default, his- tory lines may be modified and retain individual undo lists - across calls to rreeaaddlliinnee. - sshhooww--aallll--iiff--aammbbiigguuoouuss ((OOffff)) + across calls to readline. + show-all-if-ambiguous (Off) This alters the default behavior of the completion functions. - If set to OOnn, words which have more than one possible completion + If set to On, words which have more than one possible completion cause the matches to be listed immediately instead of ringing the bell. - sshhooww--aallll--iiff--uunnmmooddiiffiieedd ((OOffff)) + show-all-if-unmodified (Off) This alters the default behavior of the completion functions in - a fashion similar to sshhooww--aallll--iiff--aammbbiigguuoouuss. If set to OOnn, words + a fashion similar to show-all-if-ambiguous. If set to On, words which have more than one possible completion without any possi- ble partial completion (the possible completions don't share a - common prefix) cause the matches to be listed immediately - instead of ringing the bell. - sshhooww--mmooddee--iinn--pprroommpptt ((OOffff)) - If set to OOnn, add a character to the beginning of the prompt - indicating the editing mode: emacs (@), vi command (:) or vi - insertion (+). - sskkiipp--ccoommpplleetteedd--tteexxtt ((OOffff)) - If set to OOnn, this alters the default completion behavior when + common prefix) cause the matches to be listed immediately in- + stead of ringing the bell. + show-mode-in-prompt (Off) + If set to On, add a string to the beginning of the prompt indi- + cating the editing mode: emacs, vi command, or vi insertion. + The mode strings are user-settable (e.g., emacs-mode-string). + skip-completed-text (Off) + If set to On, this alters the default completion behavior when inserting a single match into the line. It's only active when performing completion in the middle of a word. If enabled, readline does not insert characters from the completion that match characters after point in the word being completed, so portions of the word following the cursor are not duplicated. - 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 com- + vi-cmd-mode-string ((cmd)) + If the show-mode-in-prompt variable is enabled, this string is + displayed immediately before the last line of the primary prompt + when vi editing mode is active and in command mode. The value + is expanded like a key binding, so the standard set of meta- and + control prefixes and backslash escape sequences is available. + Use the \1 and \2 escapes to begin and end sequences of non- + printing characters, which can be used to embed a terminal con- + trol sequence into the mode string. + vi-ins-mode-string ((ins)) + If the show-mode-in-prompt variable is enabled, this string is + displayed immediately before the last line of the primary prompt + when vi editing mode is active and in insertion mode. The value + is expanded like a key binding, so the standard set of meta- and + control prefixes and backslash escape sequences is available. + Use the \1 and \2 escapes to begin and end sequences of non- + printing characters, which can be used to embed a terminal con- + trol sequence into the mode string. + visible-stats (Off) + If set to On, a character denoting a file's type as reported by + stat(2) is appended to the filename when listing possible com- pletions. - CCoonnddiittiioonnaall CCoonnssttrruuccttss + Conditional Constructs 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 performed as the result of tests. There are four parser directives used. - $$iiff The $$iiff construct allows bindings to be made based on the edit- + $if The $if construct allows bindings to be made based on the edit- ing mode, the terminal being used, or the application using - readline. The text of the test extends to the end of the line; - no characters are required to isolate it. + readline. The text of the test, after any comparison operator, + extends to the end of the line; unless otherwise noted, no char- + acters are required to isolate it. - mmooddee The mmooddee== form of the $$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. + mode The mode= form of the $if directive is used to test + whether readline is in emacs or vi mode. This may be + used in conjunction with the set keymap command, for in- + stance, to set bindings in the emacs-standard and emacs- + ctlx keymaps only if readline is starting out in emacs + mode. - tteerrmm The tteerrmm== form may be used to include terminal-specific + term The term= form may be used to include terminal-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. + of the = is tested against the full name of the terminal + and the portion of the terminal name before the first -. + This allows sun to match both sun and sun-cmd, for in- + stance. - 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 + version + The version test may be used to perform comparisons + against specific readline versions. The version expands + to the current readline version. The set of comparison + operators includes =, (and ==), !=, <=, >=, <, and >. + The version number supplied on the right side of the op- + erator consists of a major version number, an optional + decimal point, and an optional minor version (e.g., 7.1). + If the minor version is omitted, it is assumed to be 0. + The operator may be separated from the string version and + from the version number argument by whitespace. + + application + The application construct is used to include application- + specific settings. Each program using the readline li- + brary sets the application name, and an initialization file can test for a particular value. This could be used to bind key sequences to functions useful for a specific program. For instance, the following command adds a key sequence that quotes the current or previous word in - bbaasshh: + bash: - $$iiff Bash + $if Bash # Quote the current or previous word "\C-xq": "\eb\"\ef\"" - $$eennddiiff + $endif - $$eennddiiff This command, as seen in the previous example, terminates an $$iiff + variable + The variable construct provides simple equality tests for + readline variables and values. The permitted comparison + operators are =, ==, and !=. The variable name must be + separated from the comparison operator by whitespace; the + operator may be separated from the value on the right + hand side by whitespace. Both string and boolean vari- + ables may be tested. Boolean variables must be tested + against the values on and off. + + $endif This command, as seen in the previous example, terminates an $if command. - $$eellssee Commands in this branch of the $$iiff directive are executed if the + $else Commands in this branch of the $if directive are executed if the test fails. - $$iinncclluuddee - This directive takes a single filename as an argument and reads - commands and bindings from that file. For example, the follow- - ing directive would read _/_e_t_c_/_i_n_p_u_t_r_c: + $include + This directive takes a single filename as an argument and reads + commands and bindings from that file. For example, the follow- + ing directive would read /etc/inputrc: - $$iinncclluuddee _/_e_t_c_/_i_n_p_u_t_r_c + $include /etc/inputrc -SSEEAARRCCHHIINNGG - Readline provides commands for searching through the command 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. +SEARCHING + Readline provides commands for searching through the command history + for lines containing a specified string. There are two search modes: + incremental and non-incremental. - Incremental searches begin before the user has finished typing the - search string. As each character of the search string is typed, read- + Incremental searches begin before the user has finished typing the + search string. As each character of the search string is typed, read- line 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 - history for a particular string, type CC--rr. Typing CC--ss searches forward - through the history. The characters present 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 characters 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 + so far. An incremental search requires only as many characters as + needed to find the desired history entry. To search backward in the + history for a particular string, type C-r. Typing C-s searches forward + through the history. The characters present in the value of the + isearch-terminators variable are used to terminate an incremental + search. If that variable has not been assigned a value the Escape and + C-J characters will terminate an incremental search. C-G 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 + To find other matching entries in the history list, type C-s or C-r 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 command from the history + cute that command. For instance, a newline will terminate the search + and accept the line, thereby executing the command from the history list. A movement command will terminate 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 + 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 +EDITING COMMANDS + The following is a list of the names of the commands and the default key sequences to which they are bound. Command names without an accom- panying key sequence are unbound by default. - In the following descriptions, _p_o_i_n_t refers to the current cursor posi- - tion, and _m_a_r_k refers to a cursor position saved by the sseett--mmaarrkk com- - mand. The text between the point and mark is referred to as the - _r_e_g_i_o_n. + In the following descriptions, point refers to the current cursor posi- + tion, and mark refers to a cursor position saved by the set-mark com- + mand. The text between the point and mark is referred to as the re- + gion. - CCoommmmaannddss ffoorr MMoovviinngg - bbeeggiinnnniinngg--ooff--lliinnee ((CC--aa)) + Commands for Moving + beginning-of-line (C-a) Move to the start of the current line. - eenndd--ooff--lliinnee ((CC--ee)) + end-of-line (C-e) Move to the end of the line. - ffoorrwwaarrdd--cchhaarr ((CC--ff)) + forward-char (C-f) Move forward a character. - bbaacckkwwaarrdd--cchhaarr ((CC--bb)) + backward-char (C-b) Move back a character. - ffoorrwwaarrdd--wwoorrdd ((MM--ff)) + forward-word (M-f) 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 + backward-word (M-b) + Move back to the start of the current or previous word. Words are composed of alphanumeric characters (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 + previous-screen-line + Attempt to move point to the same physical screen column on the + previous physical screen line. This will not have the desired + effect if the current Readline line does not take up more than + one physical line or if point is not greater than the length of + the prompt plus the screen width. + next-screen-line + Attempt to move point to the same physical screen column on the + next physical screen line. This will not have the desired effect + if the current Readline line does not take up more than one + physical line or if the length of the current Readline line is + not greater than the length of the prompt plus the screen width. + clear-display (M-C-l) + Clear the screen and, if possible, the terminal's scrollback + buffer, then redraw the current line, leaving the current line + at the top of the screen. + clear-screen (C-l) + Clear the screen, then redraw the current line, leaving the cur- + rent line at the top of the screen. With an argument, refresh + the current line without clearing the screen. + redraw-current-line Refresh the current line. - CCoommmmaannddss ffoorr MMaanniippuullaattiinngg tthhee HHiissttoorryy - aacccceepptt--lliinnee ((NNeewwlliinnee,, RReettuurrnn)) + Commands for Manipulating the History + accept-line (Newline, Return) 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 + is non-empty, it may be added to the history list for future re- + call with add_history(). If the line is a modified history line, the history line is restored to its original state. - pprreevviioouuss--hhiissttoorryy ((CC--pp)) + previous-history (C-p) 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, moving forward in + next-history (C-n) + Fetch the next command from the history list, moving forward in the list. - bbeeggiinnnniinngg--ooff--hhiissttoorryy ((MM--<<)) + beginning-of-history (M-<) 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 + end-of-history (M->) + 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 + reverse-search-history (C-r) + 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 + forward-search-history (C-s) + 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)) + non-incremental-reverse-search-history (M-p) Search backward through the history starting at the current line - using a non-incremental search for a string supplied by the + 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 + non-incremental-forward-search-history (M-n) + Search forward through the history using a non-incremental search for a string supplied by the user. - hhiissttoorryy--sseeaarrcchh--bbaacckkwwaarrdd + history-search-backward Search backward 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). The search string must match at the - beginning of a history line. This is a non-incremental search. - hhiissttoorryy--sseeaarrcchh--ffoorrwwaarrdd + between the start of the current line and the current cursor po- + sition (the point). The search string must match at the begin- + ning of a history line. This is a non-incremental search. + history-search-forward Search forward through the history for the string of characters between the start of the current line and the point. The search string must match at the beginning of a history line. This is a non-incremental search. - hhiissttoorryy--ssuubbssttrriinngg--sseeaarrcchh--bbaacckkwwaarrdd + history-substring-search-backward Search backward 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). The search string may match anywhere in a + between the start of the current line and the current cursor po- + sition (the point). The search string may match anywhere in a history line. This is a non-incremental search. - hhiissttoorryy--ssuubbssttrriinngg--sseeaarrcchh--ffoorrwwaarrdd + history-substring-search-forward Search forward through the history for the string of characters between the start of the current line and the point. The search - string may match anywhere in a history line. This is a non- - incremental search. - yyaannkk--nntthh--aarrgg ((MM--CC--yy)) + string may match anywhere in a history line. This is a non-in- + cremental search. + yank-nth-arg (M-C-y) 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 - previous command begin with word 0). A negative argument - inserts the _nth word from the end of the previous command. Once - the argument _n is computed, the argument is extracted as if the - "!_n" history expansion had been specified. - yyaannkk--llaasstt--aarrgg ((MM--..,, MM--__)) + second word on the previous line) at point. With an argument n, + insert the nth word from the previous command (the words in the + previous command begin with word 0). A negative argument in- + serts the nth word from the end of the previous command. Once + the argument n is computed, the argument is extracted as if the + "!n" history expansion had been specified. + yank-last-arg (M-., M-_) Insert the last argument to the previous command (the last word of the previous history entry). With a numeric argument, behave - exactly like yyaannkk--nntthh--aarrgg. Successive calls to yyaannkk--llaasstt--aarrgg + exactly like yank-nth-arg. Successive calls to yank-last-arg move back through the history list, inserting the last word (or the word specified by the argument to the first call) of each line in turn. Any numeric argument supplied to these successive @@ -543,210 +631,217 @@ EEDDIITTIINNGG CCOOMMMMAANNDDSS (back or forward). The history expansion facilities are used to extract the last argument, as if the "!$" history expansion had been specified. + operate-and-get-next (C-o) + Accept the current line for return to the calling application as + if a newline had been entered, and fetch the next line relative + to the current line from the history for editing. A numeric ar- + gument, if supplied, specifies the history entry to use instead + of the current line. - CCoommmmaannddss ffoorr CChhaannggiinngg TTeexxtt - _e_n_d_-_o_f_-_f_i_l_e ((uussuuaallllyy CC--dd)) + Commands for Changing Text + end-of-file (usually C-d) The character indicating end-of-file as set, for example, by ``stty''. If this character is read when there are no charac- ters on the line, and point is at the beginning of the line, - Readline interprets it as the end of input and returns EEOOFF. - ddeelleettee--cchhaarr ((CC--dd)) + Readline interprets it as the end of input and returns EOF. + delete-char (C-d) Delete the character at point. If this function is bound to the - same character as the tty EEOOFF character, as CC--dd commonly is, see + same character as the tty EOF character, as C-d commonly is, see above for the effects. - bbaacckkwwaarrdd--ddeelleettee--cchhaarr ((RRuubboouutt)) + backward-delete-char (Rubout) Delete the character behind the cursor. When given a numeric argument, save the deleted text on the kill ring. - ffoorrwwaarrdd--bbaacckkwwaarrdd--ddeelleettee--cchhaarr + forward-backward-delete-char Delete the character under the cursor, unless the cursor is at the end of the line, in which case the character behind the cur- sor is deleted. - qquuootteedd--iinnsseerrtt ((CC--qq,, CC--vv)) + quoted-insert (C-q, C-v) 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)) + is how to insert characters like C-q, for example. + tab-insert (M-TAB) Insert a tab character. - sseellff--iinnsseerrtt ((aa,, bb,, AA,, 11,, !!,, ......)) + self-insert (a, b, A, 1, !, ...) Insert the character typed. - ttrraannssppoossee--cchhaarrss ((CC--tt)) + transpose-chars (C-t) 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. Negative arguments have no effect. - ttrraannssppoossee--wwoorrddss ((MM--tt)) + transpose-words (M-t) 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 + upcase-word (M-u) + Uppercase the current (or following) word. With a negative ar- + gument, uppercase the previous word, but do not move point. + downcase-word (M-l) + Lowercase the current (or following) word. With a negative ar- + gument, lowercase the previous word, but do not move point. + capitalize-word (M-c) + Capitalize the current (or following) word. With a negative ar- + gument, capitalize the previous word, but do not move point. + overwrite-mode Toggle overwrite mode. With an explicit positive numeric argu- ment, 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 overwrite mode, charac- - ters 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 + only emacs mode; vi mode does overwrite differently. Each call + to readline() starts in insert mode. In overwrite mode, charac- + ters bound to self-insert replace the text at point rather than + pushing the text to the right. Characters bound to back- + ward-delete-char replace the character before point with a space. By default, this command is unbound. - KKiilllliinngg aanndd YYaannkkiinngg - kkiillll--lliinnee ((CC--kk)) + Killing and Yanking + kill-line (C-k) Kill the text from point to the end of the line. - bbaacckkwwaarrdd--kkiillll--lliinnee ((CC--xx RRuubboouutt)) + backward-kill-line (C-x Rubout) Kill backward to the beginning of the line. - uunniixx--lliinnee--ddiissccaarrdd ((CC--uu)) + unix-line-discard (C-u) Kill backward from point to the beginning of the line. The killed text is saved on the kill-ring. - kkiillll--wwhhoollee--lliinnee + kill-whole-line Kill all characters on the current line, no matter where point is. - kkiillll--wwoorrdd ((MM--dd)) + kill-word (M-d) 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 ffoorrwwaarrdd--wwoorrdd. - bbaacckkwwaarrdd--kkiillll--wwoorrdd ((MM--RRuubboouutt)) + same as those used by forward-word. + backward-kill-word (M-Rubout) Kill the word behind point. Word boundaries are the same as - those used by bbaacckkwwaarrdd--wwoorrdd. - uunniixx--wwoorrdd--rruubboouutt ((CC--ww)) + those used by backward-word. + unix-word-rubout (C-w) Kill the word behind point, using white space as a word bound- ary. The killed text is saved on the kill-ring. - uunniixx--ffiilleennaammee--rruubboouutt + unix-filename-rubout Kill the word behind point, using white space and the slash character as the word boundaries. The killed text is saved on the kill-ring. - ddeelleettee--hhoorriizzoonnttaall--ssppaaccee ((MM--\\)) + delete-horizontal-space (M-\) Delete all spaces and tabs around point. - kkiillll--rreeggiioonn - Kill the text between the point and _m_a_r_k (saved cursor posi- - tion). This text is referred to as the _r_e_g_i_o_n. - ccooppyy--rreeggiioonn--aass--kkiillll + kill-region + Kill the text between the point and mark (saved cursor posi- + tion). This text is referred to as the region. + copy-region-as-kill Copy the text in the region to the kill buffer. - ccooppyy--bbaacckkwwaarrdd--wwoorrdd + copy-backward-word Copy the word before point to the kill buffer. The word bound- - aries are the same as bbaacckkwwaarrdd--wwoorrdd. - ccooppyy--ffoorrwwaarrdd--wwoorrdd + aries are the same as backward-word. + copy-forward-word Copy the word following point to the kill buffer. The word - boundaries are the same as ffoorrwwaarrdd--wwoorrdd. - yyaannkk ((CC--yy)) + boundaries are the same as forward-word. + yank (C-y) Yank the top of the kill ring into the buffer at point. - yyaannkk--ppoopp ((MM--yy)) + yank-pop (M-y) Rotate the kill ring, and yank the new top. Only works follow- - ing yyaannkk or yyaannkk--ppoopp. + ing yank or yank-pop. - NNuummeerriicc AArrgguummeennttss - ddiiggiitt--aarrgguummeenntt ((MM--00,, MM--11,, ......,, MM----)) + Numeric Arguments + digit-argument (M-0, M-1, ..., M--) Add this digit to the argument already accumulating, or start a new argument. M-- starts a negative argument. - uunniivveerrssaall--aarrgguummeenntt + universal-argument 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 fol- - lowed by digits, executing uunniivveerrssaall--aarrgguummeenntt again ends the - numeric argument, but is otherwise ignored. As a special case, - if this command is immediately followed 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 initially + lowed by digits, executing universal-argument again ends the nu- + meric argument, but is otherwise ignored. As a special case, if + this command is immediately followed by a character that is nei- + ther a digit or minus sign, the argument count for the next com- + mand is multiplied by four. The argument count is initially one, so executing this function the first time makes the argu- ment 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 application-specific. BBaasshh, for + Completing + complete (TAB) + Attempt to perform completion on the text before point. The ac- + tual completion performed is application-specific. Bash, for instance, attempts completion 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 + (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 completion is attempted. GGddbb, on the other + match, filename completion is attempted. Gdb, on the other hand, allows completion of program functions and variables, and only attempts filename completion under certain circumstances. - ppoossssiibbllee--ccoommpplleettiioonnss ((MM--??)) + possible-completions (M-?) List the possible completions of the text before point. When displaying completions, readline sets the number of columns used - for display to the value of ccoommpplleettiioonn--ddiissppllaayy--wwiiddtthh, the value - of the environment variable CCOOLLUUMMNNSS, or the screen width, in + for display to the value of completion-display-width, the value + of the environment variable COLUMNS, or the screen width, in that order. - iinnsseerrtt--ccoommpplleettiioonnss ((MM--**)) + insert-completions (M-*) Insert all completions of the text before point that would have - been generated by ppoossssiibbllee--ccoommpplleettiioonnss. - mmeennuu--ccoommpplleettee - Similar to ccoommpplleettee, but replaces the word to be completed with + been generated by possible-completions. + menu-complete + Similar to complete, but replaces the word to be completed with a single match from the list of possible completions. Repeated - execution of mmeennuu--ccoommpplleettee steps through the list of possible + execution of menu-complete steps through the list of possible completions, inserting each match in turn. At the end of the list of completions, the bell is rung (subject to the setting of - bbeellll--ssttyyllee) and the original text is restored. An argument of _n - moves _n positions forward in the list of matches; a negative - argument may be used to move backward through the list. This - command is intended to be bound to TTAABB, but is unbound by - default. - mmeennuu--ccoommpplleettee--bbaacckkwwaarrdd - Identical to mmeennuu--ccoommpplleettee, but moves backward through the list - of possible completions, as if mmeennuu--ccoommpplleettee had been given a + bell-style) and the original text is restored. An argument of n + moves n positions forward in the list of matches; a negative ar- + gument may be used to move backward through the list. This com- + mand is intended to be bound to TAB, but is unbound by default. + menu-complete-backward + Identical to menu-complete, but moves backward through the list + of possible completions, as if menu-complete had been given a negative argument. This command is unbound by default. - 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 identically to ppoossssiibbllee--ccoommpplleettiioonnss. + delete-char-or-list + Deletes the character under the cursor if not at the beginning + or end of the line (like delete-char). If at the end of the + line, behaves identically to possible-completions. - KKeeyybbooaarrdd MMaaccrrooss - ssttaarrtt--kkbbdd--mmaaccrroo ((CC--xx (()) - Begin saving the characters typed into the current keyboard + Keyboard Macros + start-kbd-macro (C-x () + Begin saving the characters typed into the current keyboard macro. - eenndd--kkbbdd--mmaaccrroo ((CC--xx )))) + end-kbd-macro (C-x )) 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 making the char- - acters in the macro appear as if typed at the keyboard. - pprriinntt--llaasstt--kkbbdd--mmaaccrroo (()) Print the last keyboard macro defined in - a format suitable for the _i_n_p_u_t_r_c file. + call-last-kbd-macro (C-x e) + Re-execute the last keyboard macro defined, by making the char- + acters in the macro appear as if typed at the keyboard. + print-last-kbd-macro () + Print the last keyboard macro defined in a format suitable for + the inputrc file. - 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 + Miscellaneous + re-read-init-file (C-x C-r) + Read in the contents of the inputrc file, and incorporate any bindings or variable assignments found there. - aabboorrtt ((CC--gg)) + abort (C-g) Abort the current editing command and ring the terminal'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 uppercase character. - pprreeffiixx--mmeettaa ((EESSCC)) - Metafy the next character typed. EESSCC ff is equivalent to MMeettaa--ff. - uunnddoo ((CC--__,, CC--xx CC--uu)) + (subject to the setting of bell-style). + do-lowercase-version (M-A, M-B, M-x, ...) + If the metafied character x is uppercase, run the command that + is bound to the corresponding metafied lowercase character. The + behavior is undefined if x is already lowercase. + prefix-meta (ESC) + Metafy the next character typed. ESC f is equivalent to Meta-f. + undo (C-_, C-x C-u) Incremental undo, separately remembered for each line. - rreevveerrtt--lliinnee ((MM--rr)) + revert-line (M-r) Undo all changes made to this line. This is like executing the - uunnddoo command enough times to return the line to its initial + undo command enough times to return the line to its initial state. - ttiillddee--eexxppaanndd ((MM--&&)) + tilde-expand (M-&) Perform tilde expansion on the current word. - sseett--mmaarrkk ((CC--@@,, MM--<>)) + set-mark (C-@, M-) 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)) + exchange-point-and-mark (C-x C-x) 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--]])) + character-search (C-]) A character is read and point is moved to the next occurrence of that character. A negative count searches for previous occur- rences. - cchhaarraacctteerr--sseeaarrcchh--bbaacckkwwaarrdd ((MM--CC--]])) + character-search-backward (M-C-]) A character is read and point is moved to the previous occur- rence of that character. A negative count searches for subse- quent occurrences. - sskkiipp--ccssii--sseeqquueennccee + skip-csi-sequence Read enough characters to consume a multi-key sequence such as those defined for keys like Home and End. Such sequences begin with a Control Sequence Indicator (CSI), usually ESC-[. If this @@ -754,55 +849,55 @@ EEDDIITTIINNGG CCOOMMMMAANNDDSS have no effect unless explicitly bound to a readline command, instead of inserting stray characters into the editing buffer. This is unbound by default, but usually bound to ESC-[. - iinnsseerrtt--ccoommmmeenntt ((MM--##)) - Without a numeric argument, the value of the readline ccoomm-- - mmeenntt--bbeeggiinn variable is inserted at the beginning of the current + insert-comment (M-#) + Without a numeric argument, the value of the readline com- + ment-begin variable is inserted at the beginning of the current line. If a numeric argument 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, other- - wise the characters in ccoommmmeenntt--bbeeggiinn are deleted from the begin- + toggle: if the characters at the beginning of the line do not + match the value of comment-begin, the value is inserted, other- + wise the characters in comment-begin are deleted from the begin- ning of the line. In either case, the line is accepted as if a - newline had been typed. The default value of ccoommmmeenntt--bbeeggiinn + newline had been typed. The default value of comment-begin 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 + causes the comment character to be removed, the line will be ex- + ecuted by the shell. + dump-functions Print all of the functions and their key bindings to the read- line output stream. If a numeric argument is supplied, the out- put is formatted in such a way that it can be made part of an - _i_n_p_u_t_r_c file. - dduummpp--vvaarriiaabblleess + inputrc file. + dump-variables Print all of the settable variables and their values 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 + inputrc file. + dump-macros Print all of the readline key sequences bound to macros and the strings they output. 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 + inputrc file. + emacs-editing-mode (C-e) + When in vi command mode, this causes a switch to emacs editing mode. - vvii--eeddiittiinngg--mmooddee ((MM--CC--jj)) - When in eemmaaccss editing mode, this causes a switch to vvii editing + vi-editing-mode (M-C-j) + When in emacs editing mode, this causes a switch to vi editing mode. -DDEEFFAAUULLTT KKEEYY BBIINNDDIINNGGSS +DEFAULT KEY BINDINGS The following is a list of the default emacs and vi bindings. Charac- - ters with the eighth bit set are written as M-, and are - referred to as _m_e_t_a_f_i_e_d characters. The printable ASCII characters not + ters with the eighth bit set are written as M-, and are re- + ferred to as metafied 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 + self-insert function, which just inserts the given character into the input line. In vi insertion mode, all characters not specifically men- - tioned are bound to sseellff--iinnsseerrtt. Characters assigned to signal genera- - tion by _s_t_t_y(1) or the terminal driver, such as C-Z or C-C, retain that + tioned are bound to self-insert. Characters assigned to signal genera- + tion by stty(1) or the terminal 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 remaining characters are unbound, which causes readline to ring the bell (subject to the - setting of the bbeellll--ssttyyllee variable). + setting of the bell-style variable). - EEmmaaccss MMooddee + Emacs Mode Emacs Standard bindings "C-@" set-mark @@ -841,6 +936,7 @@ DDEEFFAAUULLTT KKEEYY BBIINNDDIINNGGS "M-C-H" backward-kill-word "M-C-I" tab-insert "M-C-J" vi-editing-mode + "M-C-L" clear-display "M-C-M" vi-editing-mode "M-C-R" revert-line "M-C-Y" yank-nth-arg @@ -894,7 +990,7 @@ DDEEFFAAUULLTT KKEEYY BBIINNDDIINNGGS "C-XC-?" backward-kill-line - VVII MMooddee bbiinnddiinnggss + VI Mode bindings VI Insert Mode functions "C-D" vi-eof-maybe @@ -996,39 +1092,39 @@ DDEEFFAAUULLTT KKEEYY BBIINNDDIINNGGS "|" 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) +SEE ALSO + The Gnu Readline Library, Brian Fox and Chet Ramey + The Gnu History Library, Brian Fox and Chet Ramey + bash(1) -FFIILLEESS - _~_/_._i_n_p_u_t_r_c - Individual rreeaaddlliinnee initialization file +FILES + ~/.inputrc + Individual readline initialization file -AAUUTTHHOORRSS +AUTHORS Brian Fox, Free Software Foundation bfox@gnu.org Chet Ramey, Case Western Reserve University chet.ramey@case.edu -BBUUGG RREEPPOORRTTSS - If you find a bug in rreeaaddlliinnee,, you should report it. But first, you +BUG REPORTS + If you find a bug in readline, 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. + latest version of the readline 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 + to bug-readline@gnu.org. 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. + mailed to bug-readline@gnu.org or posted to the Usenet newsgroup + gnu.bash.bug. Comments and bug reports concerning this manual page should be directed - to _c_h_e_t_._r_a_m_e_y_@_c_a_s_e_._e_d_u. + to chet.ramey@case.edu. -BBUUGGSS +BUGS It's too big and too slow. -GNU Readline 6.3 2014 January 6 READLINE(3) +GNU Readline 8.1 2020 October 29 READLINE(3)