Adding upstream version 86.0.1.upstream/86.0.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

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+.TH EDITLINE 3
+.SH NAME
+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;"
+.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
+.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
+.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
+The
+.I add_history
+routine makes a copy of the specified
+.I line
+and adds it to the internal history list.
+.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''.
+.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.
+.PP
+Most editing commands may be given a repeat count,
+.IR n ,
+where
+.I n
+is a number.
+To enter a repeat count, type the escape key, the number, and then
+the command to execute.
+For example, ``ESC\ 4\ ^f'' moves forward four characters.
+If a command may be given a repeat count then the text ``[n]'' is given at the
+end of its description.
+.PP
+The following control characters are accepted:
+.RS
+.nf
+.ta \w'ESC DEL  'u
+^A	Move to the beginning of the line
+^B	Move left (backwards) [n]
+^D	Delete character [n]
+^E	Move to end of line
+^F	Move right (forwards) [n]
+^G	Ring the bell
+^H	Delete character before cursor (backspace key) [n]
+^I	Complete filename (tab key); see below
+^J	Done with line (return key)
+^K	Kill to end of line (or column [n])
+^L	Redisplay line
+^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
+^T	Transpose characters
+^V	Insert next character, even if it is an edit command
+^W	Wipe to the mark
+^X^X	Exchange current location and mark
+^Y	Yank back last killed text
+^[	Start an escape sequence (escape key)
+^]c	Move forward to next character ``c''
+^?	Delete character before cursor (delete key) [n]
+.fi
+.RE
+.PP
+The following escape sequences are provided.
+.RS
+.nf
+.ta \w'ESC DEL  'u
+ESC\ ^H	Delete previous word (backspace key) [n]
+ESC\ DEL	Delete previous word (delete key) [n]
+ESC\ SP	Set the mark (space key); see ^X^X and ^Y above
+ESC\ \.	Get the last (or [n]'th) word from previous line
+ESC\ \?	Show possible completions; see below
+ESC\ <	Move to start of history
+ESC\ >	Move to end of history
+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\ u	Make word uppercase [n]
+ESC\ y	Yank back last killed text
+ESC\ v	Show library version
+ESC\ w	Make area up to mark yankable
+ESC\ nn	Set repeat count to the number nn
+ESC\ C	Read from environment variable ``_C_'', where C is
+\&	an uppercase letter
+.fi
+.RE
+.PP
+The
+.I editline
+library has a small macro facility.
+If you type the escape key followed by an uppercase letter,
+.IR C ,
+then the contents of the environment variable
+.I _C_
+are read in as if you had typed them at the keyboard.
+For example, if the variable
+.I _L_
+contains the following:
+.RS
+^A^Kecho '^V^[[H^V^[[2J'^M
+.RE
+Then typing ``ESC L'' will move to the beginning of the line, kill the
+entire line, enter the echo command needed to clear the terminal (if your
+terminal is like a VT-100), and send the line back to the shell.
+.PP
+The
+.I editline
+library also does filename completion.
+Suppose the root directory has the following files in it:
+.RS
+.nf
+.ta \w'core   'u
+bin	vmunix
+core	vmunix.old
+.fi
+.RE
+If you type ``rm\ /v'' and then the tab key.
+.I Editline
+will then finish off as much of the name as possible by adding ``munix''.
+Because the name is not unique, it will then beep.
+If you type the escape key and a question mark, it will display the
+two choices.
+If you then type a period and a tab, the library will finish off the filename
+for you:
+.RS
+.nf
+.RI "rm /v[TAB]" munix .TAB old
+.fi
+.RE
+The tab key is shown by ``[TAB]'' and the automatically-entered text
+is shown in italics.
+.SH "BUGS AND LIMITATIONS"
+Cannot handle lines more than 80 columns.
+.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>.