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1.1 etheisen 1: .TH LESSKEY 1
2: .SH NAME
3: lesskey \- specify key bindings for less
4: .SH SYNOPSIS
5: .B "lesskey [-o output] [input]"
6: .br
7: .B "lesskey -V"
8: .SH DESCRIPTION
9: .I Lesskey
10: is used to specify a set of key bindings to be used by
11: .I less.
12: The input file is a text file which describes the key bindings,
13: If the input file is "-", standard input is read.
14: If no input file is specified, $HOME/.lesskey is read.
15: The output file is a binary file which is used by
16: .I less.
17: If no output file is specified, $HOME/.less is written.
18: If the output file already exists,
19: .I lesskey
20: will overwrite it.
21: .PP
22: The input file consists of lines of the form:
23: .sp
24: \fIstring\fP <whitespace> \fIaction\fP [extra-string] <newline>
25: .sp
26: Whitespace is any sequence of one or more spaces and/or tabs.
27: The \fIstring\fP is the command key(s) which invoke the action.
28: The \fIstring\fP may be a single command key, or a sequence of up to 15 keys.
29: The \fIaction\fP is the name of the less action, from the list below.
30: The characters in the \fIstring\fP may appear literally, or be
31: prefixed by a caret to indicate a control key.
32: A backslash followed by one to three octal digits may be used to
33: specify a character by its octal value.
34: A backslash followed by b, e, n, r or t specifies
35: BACKSPACE, ESCAPE, NEWLINE, RETURN or TAB, respectively.
36: A backslash followed by any other character indicates that character is
37: to be taken literally.
38: Characters which must be preceded by backslash include
39: caret, space, tab and the backslash itself.
40: Blank lines and lines which start with a pound sign (#) are ignored.
41: .PP
42: An action may be followed by an "extra" string.
43: When such a command is entered while running
44: .I less,
45: the action is performed, and then the extra
46: string is parsed, just as if it were typed in to
47: .I less.
48: This feature can be used in certain cases to extend
49: the functionality of a command.
50: For example, see the "{" and ":t" commands in the example below.
51: .PP
52: The -V flag causes
53: .I lesskey
54: to print its version number and immediately exit.
55: Other flags and arguments are ignored.
56:
57: .SH EXAMPLE
58: The following input file describes the set of
59: default command keys used by less:
60: .sp
61: .nf
62: \er forw-line
63: \en forw-line
64: e forw-line
65: j forw-line
66: ^E forw-line
67: ^N forw-line
68: k back-line
69: y back-line
70: ^Y back-line
71: ^K back-line
72: ^P back-line
73: J forw-line-force
74: K back-line-force
75: Y back-line-force
76: d forw-scroll
77: ^D forw-scroll
78: u back-scroll
79: ^U back-scroll
80: \e40 forw-screen
81: f forw-screen
82: ^F forw-screen
83: ^V forw-screen
84: b back-screen
85: ^B back-screen
86: \eev back-screen
87: z forw-window
88: w back-window
89: F forw-forever
90: R repaint-flush
91: r repaint
92: ^R repaint
93: ^L repaint
94: g goto-line
95: < goto-line
96: \ee< goto-line
97: p percent
98: % percent
99: { forw-bracket {}
100: } back-bracket {}
101: ( forw-bracket ()
102: ) back-bracket ()
103: [ forw-bracket []
104: ] back-bracket []
105: \ee^F forw-bracket
106: \ee^B back-bracket
107: G goto-end
108: \ee> goto-end
109: > goto-end
110: = status
111: ^G status
112: :f status
113: / forw-search
114: ? back-search
115: \ee/ forw-search *
116: \ee? back-search *
117: n repeat-search
118: \een repeat-search-all
119: N reverse-search
120: \eeN reverse-search-all
121: \eu undo-hilite
122: m set-mark
123: ' goto-mark
124: ^X^X goto-mark
125: E examine
126: :e examine
127: ^X^V examine
128: :n next-file
129: :p prev-file
130: :x index-file
131: - toggle-option
132: :t toggle-option t
133: s toggle-option o
134: _ display-option
135: | pipe
136: v visual
137: ! shell
138: + firstcmd
139: H help
140: h help
141: V version
142: q quit
143: :q quit
144: :Q quit
145: ZZ quit
146: .fi
147: .sp
148: .SH PRECEDENCE
149: Commands specified by
150: .I lesskey
151: take precedence over the default commands.
152: A default command key may be disabled by including it in the
153: input file with the action "invalid".
154: Alternatively, a key may be defined
155: to do nothing by using the action "noaction".
156: "noaction" is similar to "invalid", but
157: .I less
158: will give an error beep for an "invalid" command,
159: but not for a "noaction" command.
160: In addition, ALL default commands may be disabled by
161: adding this control line to the input file:
162: .sp
163: #stop
164: .sp
165: This will cause all default commands to be ignored.
166: The #stop line should be the last line in that section of the file.
167: (Another section, introduced by #line-edit, may follow the #stop line.)
168: .PP
169: Be aware that #stop can be dangerous.
170: Since all default commands are disabled,
171: you must provide sufficient commands before the #stop line
172: to enable all necessary actions.
173: For example, failure to provide a "quit" command can lead to frustration.
174:
175: .SH "LINE EDITING"
176: New key bindings may be specified for the line editing commands,
177: in a manner similar to the way key bindings for
178: ordinary commands are specified.
179: This control line marks the beginning of a section of line-editing commands:
180: .sp
181: #line-edit
182: .sp
183: Following this line is a list of keys and actions,
184: one per line as in the example below.
185:
186: .SH EXAMPLE
187: The following input file describes the set of
188: default line-editing keys used by less:
189: .sp
190: .nf
191: #line-edit
192: \et forw-complete
193: \e17 back-complete
194: \ee\et back-complete
195: \e14 expand
196: ^V literal
197: ^A literal
198: \eel right
199: \eeh left
200: \eeb word-left
201: \eew word-right
202: \eei insert
203: \eex delete
204: \ee\eb word-backspace
205: \ee0 home
206: \ee$ end
207: \eek up
208: \eej down
209: .fi
210: .sp
211:
212: .SH "SEE ALSO"
213: less(1)
214:
215: .SH COPYRIGHT
216: Copyright (c) 1984,1985,1989,1994,1995 Mark Nudelman