Enable separate compilation while keeping internal interfaces hidden.
Simplifies the build system and prevents modules
from stomping on each other's static symbols.

Based on a hint from guenther@,
using feedback from kettenis@ and deraadt@.

delete the "private" and "public" preprocessor macros, just use standard C;
OK martijn@

Always compile with WIDECHAR on and delete that preprocessor switch.
OK martijn@.
Diff also proofread by Christian Heckendorf <mbie at ulmus dot me>.

Cleanup of standard header inclusion:

1. Add the missing <errno.h> to sig.c.
2. Do not include standard headers from private headers "chared.h"
and "el.h", include them directly where needed.
3. Delete a few needless inclusions of <ctype.h>.
4. Sort the standard headers.
5. Delete _GNU_SOURCE weirdness from histedit.h, that file doesn't even
need the access to wcsdup(3) mentioned in the comment.
6. Delete some trailing blanks and blanks before tabs.

OK czarkoff@

Use getline(3) rather than fgetln(3) because it is standardized
and simpler and safer to use. Implemented by Christos Zoulas
following my suggestion, with a bug fix by me.

minor simplifactions, style fixes, and trivial syncs from NetBSD

Get rid of an ugly #ifdef in the middle of el_init() by
hiding the system dependencies away in "sys.h" where they belong.
No binary change on OpenBSD.
Seems reasonable to christos at NetBSD, too.

Fifth step in synching with NetBSD:
Delete the silly ptr_t and ioctl_t typedefs
and delete some "#ifdef notdef" code from "sys.h".
No functional change.
This makes hist.h identical to the NetBSD version.
It reduces the remaining diff from +1526 -734 to +1430 -592.
OK czarkoff@

gcc 2.x is dead

ok millert@

Update libedit to bring it into sync with the latest version from NetBSD.

ok deraadt

Update to NetBSD libedit (from Oct 1, 2003), adding some string
cleaning and history bug fixes. The code includes GNU libreadline
functionality, but the corresponding header files are not installed,
since some libreadline functions are missing. There are some minor API
changes, notably:

old: EditLine *el_init(const char *, FILE *, FILE *);
new: EditLine *el_init(const char *, FILE *, FILE *, FILE *);

old: HistEvent *history(History *h, int op, ...);
new: int history(History *h, HistEvent *ev, int op, ...); plus some
changes in operation names. See editline(3) for details.

Tested by djm@, mouring@, jmc@.

ok deraadt@

Remove the advertising clause in the UCB license which Berkeley
rescinded 22 July 1999. Proofed by myself and Theo.

We live in an ANSI C world. Remove lots of gratuitous #ifdef __STDC__ cruft.

Part one of userland __P removal. Done with a simple regexp with some minor hand editing to make comments line up correctly. Another pass is forthcoming that handles the cases that could not be done automatically.

#if __STDC__ --> #ifdef __STDC__

fix el_source() - a block needed braces around it (from NetBSD)
Some strcpy() -> strncpy (from NetBSD)
Some KNF
Add current NetBSD tags

Merge in NetBSD libedit changes and new man pages. Also fix some
strncpy() usage in their code. NetBSD change log was:
* add a man page for the editline routines
* add a man page describing editrc
* fix bugs in el_parse():
* didn't execute command when program name matched (test reversed)
* was checking against empty string instead of program name
* after checks, command to run also pointed to empty string
* document ^char and \ escape sequences
* when parsing ^char control chars, check the correct char when determining
validity (previously, ^char was a NOP interpreted as the literal string
because of this bug)
* Implement CC_REDISPLAY, which (unlike CC_REFRESH) redraws the entire input
* line (a la ^R). This is useful if the binding outputs information and
* mucks up the input line. To be used in ``list-choices'' bindings (refer
* to the ^D binding in csh when filec is set)

branches: 1.1.1;
Initial revision