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Update man page slightly.

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Joachim Nilsson
2010-07-31 02:27:24 +02:00
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104
man/editline.3
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@@ -3,54 +3,43 @@
editline \- command-line editing library with history
.SH SYNOPSIS
.nf
.B "char *"
.B "readline(prompt)"
.B " char *prompt;"
.B "void"
.B "add_history(line)"
.B " char *line;"
.B "char *readline(char *prompt);"
.fi
.SH DESCRIPTION
.I Editline
is a library that provides an line-editing interface with text recall.
It is intended to be compatible with the
is a library that provides an line-editing interface with history.
It is intended to be functionally equivalent with the
.I readline
library provided by the Free Software Foundation, but much smaller.
The bulk of this manual page describes the user interface.
.PP
The
.I readline
routine returns a line of text with the trailing newline removed.
The data is returned in a buffer allocated with
.I readline()
function displays the given
.I prompt
on stdout, waits for user input on stdin and then
returns a line of text with the trailing newline removed. The data is returned in a
buffer allocated with
.IR malloc (3),
so the space should be released with
.IR free (3)
when the calling program is done with it.
Before accepting input from the user, the specified
.I prompt
is displayed on the terminal.
.PP
Each line returned is copied to the internal history list, unless it happens
to be equal to the previous line.
to be equal to the previous line. This is configurable if you are building editline
from source.
.SS "User Interface"
A program that uses this library provides a simple emacs-like editing
interface to its users.
A line may be edited before it is sent to the calling program by typing either
control characters or escape sequences.
A control character, shown as a caret followed by a letter, is typed by
holding down the ``control'' key while the letter is typed.
For example, ``^A'' is a control-A.
An escape sequence is entered by typing the ``escape'' key followed by one or
more characters.
The escape key is abbreviated as ``ESC''.
Note that unlike control keys, case matters in escape sequences; ``ESC\ F''
is not the same as ``ESC\ f''.
A program that uses this library provides a simple emacs-like editing interface to
its users. A line may be edited before it is sent to the calling program by typing
either control characters or escape sequences. A control character, shown as a caret
followed by a letter, is typed by holding down the ``control'' key while the letter
is typed. For example, ``^A'' is a control-A. An escape sequence is entered by
typing the ``escape'' key followed by one or more characters. The escape key is
abbreviated as ``ESC''. Note that unlike control keys, case matters in escape
sequences; ``ESC\ F'' is not the same as ``ESC\ f''.
.PP
An editing command may be typed anywhere on the line, not just at the
beginning.
In addition, a return may also be typed anywhere on the line, not just at
the end.
An editing command may be typed anywhere on the line, not just at the beginning. In
addition, a return may also be typed anywhere on the line, not just at the end.
.PP
Most editing commands may be given a repeat count,
.IR n ,
@@ -81,8 +70,8 @@ The following control characters are accepted:
^M Done with line (alternate return key)
^N Get next line from history [n]
^P Get previous line from history [n]
^R Search backward (forward if [n]) through history for text;
\& must start line if text begins with an uparrow
^R Search backward (forward if [n]) through history for
\& text; must start line if text begins with an uparrow
^T Transpose characters
^V Insert next character, even if it is an edit command
^W Wipe to the mark
@@ -109,7 +98,8 @@ ESC\ b Move backward a word [n]
ESC\ d Delete word under cursor [n]
ESC\ f Move forward a word [n]
ESC\ l Make word lowercase [n]
ESC\ m Toggle if 8bit chars display normally or with ``M\-'' prefix
ESC\ m Toggle if 8bit chars display normally or with an
\& ``M\-'' prefix
ESC\ u Make word uppercase [n]
ESC\ y Yank back last killed text
ESC\ v Show library version
@@ -164,11 +154,41 @@ for you:
.RE
The tab key is shown by ``[TAB]'' and the automatically-entered text
is shown in italics.
.SH "BUGS AND LIMITATIONS"
Doesn't know how to handle multiple lines.
.SH AUTHORS
Simmule R. Turner <uunet.uu.net!capitol!sysgo!simmy>
and Rich $alz <rsalz@osf.org>.
Original manual page by DaviD W. Sanderson <dws@ssec.wisc.edu>.
.\" $PchId: editline.3,v 1.3 1996/02/22 21:18:51 philip Exp $
.SH "USAGE"
To include
.I readline()
in your program, simply call it as you do any other function. Just make sure to link
your program with libeditline.
.SS "Example"
The following brief example lets you enter a line and edit it, then displays it.
.nf
.B "#include <stdlib.h>"
.B ""
.B "extern char *readline(char *prompt);"
.B ""
.B "int main (void)"
.B "{"
.B " char *p;"
.B ""
.B " while ((p = readline(``CLI> '')) != NULL) {"
.B " printf(\"%s\n\", p);"
.B " free(p);"
.B " }"
.B ""
.B " return 0;"
.B "}"
.fi
.SH "BUGS AND LIMITATIONS"
Doesn't know how to handle multiple lines or unicode characters well. See the TODO
file in the distribution if you want to help out.
.SH AUTHORS
The original editline library was created by Simmule R. Turner and Rich $alz. It is
now maintained in several forks: Heimdal, Festival speech tools, Mozilla, Google
Gadgets for Linux, and many other places. The original manual page was made by DaviD
W. Sanderson. This version was made by Joachim Nilsson <troglobit@gmail.com>.