Add a entry point for the complete function for FreeBSD compatibility with sh.

libedit: fix typos, apply KNF to newly imported code (PR/56693)

No binary change.

PR/56693: Walter Lozano: Add support for rl_delete_text and rl_set_key

PR/56618: Walter Lozano: Improve libedit compatibility with readline by
implementing:

rl_copy_text, rl_erase_empty_line, rl_message, rl_on_new_line,
rl_replace_line, rl_restore_prompt, rl_sa

PR/56618: Walter Lozano: Improve libedit compatibility with readline by
implementing:

rl_copy_text, rl_erase_empty_line, rl_message, rl_on_new_line,
rl_replace_line, rl_restore_prompt, rl_save_prompt

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Disable attempts to handle EINTR and non-blocking I/O by default. It is
confusing to other programs and unexpected behavior. Reported by Ingo Schwarze.
This behavior is now controlled with EL_SAFEREA

Disable attempts to handle EINTR and non-blocking I/O by default. It is
confusing to other programs and unexpected behavior. Reported by Ingo Schwarze.
This behavior is now controlled with EL_SAFEREAD.

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PR/51517: Jay West: Tty settings not restored on exit
PR/51518: Jay West: prompt is interleaved with client output

Both these issues are caused by rl_restore_handler not DTRT; fix
it so that it kill

PR/51517: Jay West: Tty settings not restored on exit
PR/51518: Jay West: prompt is interleaved with client output

Both these issues are caused by rl_restore_handler not DTRT; fix
it so that it kills the internal libedit state completely. This is
inefficient, but it works.

Also fix:
1. add append_history()/H_NSAVE_FP
2. call the rl_startup_hook before printing the first prompt as documented.
callint it from rl_initialize breaks python, because the callback ends
up being invoked before the readline module is installed, and we end up
dereferencing a NULL pointer.
3. add el_resize_terminal.

With those changes, s/lreadline/ledit/g in python works.

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From Ingo Schwarze:
- Put the data type el_rfunc_t into the public header <histedit.h>.
- Make el_read in struct editline an opaque pointer rather
than an embedded struct.
- Do not include "rea

From Ingo Schwarze:
- Put the data type el_rfunc_t into the public header <histedit.h>.
- Make el_read in struct editline an opaque pointer rather
than an embedded struct.
- Do not include "read.h" everywhere, but only in the two files
needing access to el_read, read.c and el.c.
- To functions that don't need more, pass the struct el_read_t *
rather than the full EditLine *.
- Of course, that means that read_init() can now fail from
memory exhaustion, but it's easy to clean up after that.

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whitespace and header sorting changes (Ingo Schwarze). No functional changes.

- don't set _GNU_SOURCE. We are not supposed to make decisions for others.
- don't special-case wcsdup()
From Ingo Schwarze.

Don't depend on weak aliases to define the vi "alias" expansion function,
provide an API instead to set it.

Add a history function that takes a FILE pointer; needed for Capsicum.
From Eitan Adler

Add a function to move the cursor.

provide an el_init_fd function.

remove stdint.h; it is not used.

kill ptr_t and ioctl_t, add * sizeof(*foo) to all allocations.

setup a callback to be invoked on resize buffers so that readline can
reset rl_line_buffer which unfortunately some applications use it directly.

From Jess Thrysoee: add ifndef around def of _GNU_SOURCE

rename historyw -> history_w for consistency.
add wide tst code and make it the default.

- Document and enable wide character support.
- Fix read function compatibility.

Fix wide build, test it, but don't turn it on yet.

Wide character support (UTF-8) from Johny Mattsson; currently disabled.

apply apple patches from:
http://opensource.apple.com/source/libedit/libedit-11/patches/

restore binary compatibility by providing new prompt functions that take
an extra literal character.

Implement literal prompt sequences. Now someone can implement
RL_PROMPT_START_LITERAL/RL_PROMPT_END_LITERAL :-)

back out all prompt changes. they are not needed.