More trailing white space.

Change multiple inclusion protection symbol name to NetBSD convention which
doesn't violate namespace rules.

* add more checks for NULL pointers in passed arguments
* implement el_get(EditLine *, int op, void *result), which does the
inverse of el_set()
* add EL_EDITMODE operation to el_set and el_get; if

* add more checks for NULL pointers in passed arguments
* implement el_get(EditLine *, int op, void *result), which does the
inverse of el_set()
* add EL_EDITMODE operation to el_set and el_get; if non zero editing
is enabled (the default).
* add "edit on | off" editrc command, which modifies EL_EDITMODE.
users can now add '*:edit off' in ~/.editrc as an advisory to
disable editing.

NOTE: at this time EL_EDITMODE is just an indication of the
state of the 'edit' command. It's up to the application to check
this after el_source() or el_parse() to determine if editing is still
required.

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* implement CC_REFRESH_BEEP; as per CC_REFRESH but beep as well. this
is useful in completion when a partial completion is found
* remove entry in BUGS about el_parse(); that was fixed a while ago

Add H_APPEND to simplify the interface.

- add extra argument to el_init
- fix history functions
- add el_beep()

PR/4257: Jaromir Dolecek: history() has no generic error handling and isn't
reentrant. This changes the interface of the history function, so we need
a major number bump.

Portability fixes:
__const -> const
BADSIG -> SIG_ERR
int flags -> u_int flags
#if __STDC__ -> #ifdef __STDC__

Implement CC_REDISPLAY, which (unlink 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'

Implement CC_REDISPLAY, which (unlink 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)

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RCSid police
editline first appeared in 4.4BSD not NetBSD1.0

Added history load and save to file functions.

libedit!