Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22280, verified by myself.

add unintrusive Ids

clean up import; kill old cruft.

Upgrade regex routines to alpha3.3.

branches: 1.1.1;
Update to Henry's Nov 11 release -- no code changes, only the addition of
a copyright file. I'm checking it in now, rather than waiting for the
next "real" release, since the rest of the files do not have their own
copyright notices.

Clean up deleted files.

Upgrade regex routines to alpha3.3.

Update to Henry's Nov 2, 1993 alpha3.2 release.

Henry Spencer's POSIX.2 compatibile regular expression matching routines.

Catch up with all the lint warnings since exit on warning was disabled.
Disable 'missing header declaration' and 'nested extern' warnings for now.

rename to regnsub, regsub is a very popular name.

add reg{,a}sub

add missing .Nm entries. from spz@serpens.swb.de.

- use CPPFLAGS instead of CFLAGS
- use ${COMPILE.C} ... instead of ${CC} ${CFLAGS} -c ...

branches: 1.5.10;
add unintrusive Ids

fix man page specs, per bug 788 from John Smerdon.

clean up import; kill old cruft.

specify man pages the new way.

branches: 1.1.1;
Henry Spencer's POSIX.2 compatibile regular expression matching routines.

Clean up deleted files.

Upgrade regex routines to alpha3.4.

Upgrade regex routines to alpha3.3.

Update to Henry's Nov 2, 1993 alpha3.2 release.

Henry Spencer's POSIX.2 compatibile regular expression matching routines.

add unintrusive Ids

clean up import; kill old cruft.

Upgrade regex routines to alpha3.4.

Upgrade regex routines to alpha3.3.

Update to Henry's Nov 2, 1993 alpha3.2 release.

branches: 1.1.1;
Henry Spencer's POSIX.2 compatibile regular expression matching routines.

sync with FreeBSD:
- NLS support
- GNU extensions
- bug fixes

Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22280, verified by myself.

const poisoning.

constify some tables.

Add missing braces in initializers.

add unintrusive Ids

clean up import; kill old cruft.

branches: 1.1.1;
Henry Spencer's POSIX.2 compatibile regular expression matching routines.

sync with FreeBSD:
- NLS support
- GNU extensions
- bug fixes

Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22280, verified by myself.

const poisoning.

constify some tables.

Add missing braces in initializers.

add unintrusive Ids

clean up import; kill old cruft.

branches: 1.1.1;
Henry Spencer's POSIX.2 compatibile regular expression matching routines.

Clean up deleted files.

Henry Spencer's POSIX.2 compatibile regular expression matching routines.

Clean up deleted files.

Henry Spencer's POSIX.2 compatibile regular expression matching routines.

handle sizeof(off_t) > sizeof(size_t)

fix NLS compilation

Add glue to disable locale code in order to be smaller.

reduce casts

Restore NetBSD RCS Ids.

sync with FreeBSD:
- NLS support
- GNU extensions
- bug fixes

PR/45989: Martin Husemann: lint invocation does include -w only on i386

- turn lint -w for all the platforms after fixing the lint warnings.
- add _DIAGASSERTS() for casts that would assign values to types that
would not fit.
- change types, add casts
- change into ansii prototypes
- turn on _DIAGNOSTIC for libc (during current, to be eliminated for release
builds)

approved by core@

branches: 1.23.2;
Prevent regcomp/regexec DoS attacks by limiting the amount of memory used
and the level of recursion. Thanks to Maksymilian Arciemowicz for discovery
and help with the implementation.

sign-compare fixes

branches: 1.21.22;
ANSIfy.

Nuke __P.

constify and remove __UNCONST.

Avoid infinite recursion on:

echo "foo foo bar bar bar baz" | sed 's/\([^ ]*\)\( *\1\)*/\1/g'

From OpenBSD.

Redo previous in a different way; cast the character held in int variable
as unsigned char just before passing isalnum() in ISWORD() rather than
fetching it as unsigned char. It is ok since EOF is never passed to ISWORD()
(though it will be a bit inefficient.)

Addresses PR#24929.

Sprinkle cast to prevent unwanted sign extension. Some of those actually
makes sed invoked during build process an out of bound array access.

Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22280, verified by myself.

make this compile with -DREDEBUG again.

PR/14975: Takayoshi Kochi: memory leak in regexec(3).
Always free m->pmatch and m->lastpos on error.

branches: 1.12.10;
* use _DIAGASSERT() to check pointer arguments against NULL and file
descriptors against -1 (as appropriate).
* add actual checks which to detect stuff that would trigger_DIAGASSERT(),
and attempt to return a sane error condition.
* knf some code
* remove some `register' decls.

the first two items result in the addition of code similar to the
following in various functions:

_DIAGASSERT(path != NULL)
#ifdef _DIAGNOSTIC
if (path == NULL) {
errno = EFAULT;
return (-1);
}
#endif

Avoid overflow when adding a 64 bit quantity to a 32 bit pointer on 32 bit
machines.

regoff_t is used like size_t within the code, it should be defined
so instead of off_t. This makes some casts unnecessary.
We can't change the definition now due to binary compatibility, so
prepare for the next libc major version.

Delint:
- we don't need to use longs; convert to use int32_t.
- remove break statements after returns.
- cast things properly.

remove obsolete register declarations

Add missing return NULL;

- convert unsafe strcpy(), strcat() and sprintf() to the `n' versions.
- some KNF.

add unintrusive Ids

clean up import; kill old cruft.

Upgrade regex routines to alpha3.3.

Update to Henry's Nov 2, 1993 alpha3.2 release.

branches: 1.1.1;
Henry Spencer's POSIX.2 compatibile regular expression matching routines.

Clean up deleted files.

Upgrade regex routines to alpha3.3.

Henry Spencer's POSIX.2 compatibile regular expression matching routines.

Clean up deleted files.

Henry Spencer's POSIX.2 compatibile regular expression matching routines.

Clean up deleted files.

Henry Spencer's POSIX.2 compatibile regular expression matching routines.

Clean up deleted files.

Henry Spencer's POSIX.2 compatibile regular expression matching routines.

Clean up deleted files.

Henry Spencer's POSIX.2 compatibile regular expression matching routines.

re_format(7): Add subsection headings for ERE and BRE

The first paragraph could use some rewording. While BRE may be
obsolete, it's still the default for regcomp(3) and the default for
grep(1), sed(1), etc.

re_format(7): Use dagger, not double dagger. Make it superscript.

Restore NetBSD RCS Ids.

sync with FreeBSD:
- NLS support
- GNU extensions
- bug fixes

Remove workaround for ancient HTML generation code.

Update for v1.10: use '(*)' instead of '#' as dagger replacement.

dholland finds the '#' unintuitive and hard to read.

Replace dagger ("\(dg") with hash mark ("#") for marking up differences.
Dagger wasn't displayed on terminals and replaced with a minus, which
was hard to read.

Requested by agc.

branches: 1.9.6; 1.9.12;
Convert to mdoc markup.

branches: 1.8.42;
Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22280, verified by myself.

Generate <>& symbolically. I'm avoiding .../dist/... directories for now.

Boring whitespace fix.

branches: 1.5.22;
add unintrusive Ids

clean up import; kill old cruft.

re_format name fixes from Mark Weaver

Upgrade regex routines to alpha3.3.

branches: 1.1.1;
Henry Spencer's POSIX.2 compatibile regular expression matching routines.

PR/58910: enh at google dot com: Fix signed character issue in character
ranges.

branches: 1.48.2;
- cast GETNEXT to unsigned where it is being promoted to int to prevent
sign-extension (really it would have been better for PEEK*() and GETNEXT()
to return unsigned char; this would have removed a ton of (uch) casts, but
it is too intrusive for now).
- fix an isalpha that should have been iswalpha

Remove unneeded -D_OPENBSD_SOURCE

recognize the "C" language backslash escapes like gnu does (except b which
is already taken)

Arrange for tools build

add missing _

fix NLS compilation

Add glue to disable locale code in order to be smaller.

protect MIN from re-definition

reduce casts

sync with FreeBSD:
- NLS support
- GNU extensions
- bug fixes

Add some better error handling from FreeBSD, although we don't
suffer from the same issue, since we don't decrement p->next, like
FreeBSD does because we don't have multibyte support (yet). We
choose to do this so we can fail faster and more predictably.

Here's the original FreeBSD message:

When passed the invalid regular expression "a**", the error is
eventually detected and seterr() is called. It sets p->error
appropriatly and p->next and p->end to nuls which is a never used char
nuls[10] which is zeros due to .bss initialization. Unfortunatly,
p_ere_exp() and p_simp_re() both have fall through cases where they set
the error, decrement p->next and access it which means a read from what
ever .bss variable comes before nuls.

Found with regex_test:repet_multi and CHERI bounds checking.

Reviewed by: ngie, pfg, emaste
Obtained from: CheriBSD
Sponsored by: DARPA, AFRL
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D10541

Fix OOB read from FreeBSD:

The bug is an out-of-bounds read detected with address sanitizer that
happens when 'sp' in p_b_coll_elems() includes NUL byte[s], e.g. if it's
equal to "GS\x00". In that case len will be equal to 4, and the
strncmp(cp->name, sp, len) call will succeed when cp->name is "GS" but the
cp->name[len] == '\0' comparison will cause the read to go out-of-bounds.

Checking the length using strlen() instead eliminates the issue.

The bug was found in LLVM with oss-fuzz:
https://reviews.llvm.org/D39380

branches: 1.36.16;
use the unsigned char version of the input char in all cases "cap[uc]" to
avoid accessing cap[negative], found by Elliott Hughes

Use reallocarr and simplify. Document valid reallocation failures.

Add and use reallocarray() to prevent a multiplication overflow in allocation.
Reported by Guido Vranken, thanks!

PR/45989: Martin Husemann: lint invocation does include -w only on i386

- turn lint -w for all the platforms after fixing the lint warnings.
- add _DIAGASSERTS() for casts that would assign values to types that
would not fit.
- change types, add casts
- change into ansii prototypes
- turn on _DIAGNOSTIC for libc (during current, to be eliminated for release
builds)

approved by core@

branches: 1.32.2; 1.32.6; 1.32.8;
if we don't have any sets yet, don't try to look in them.

branches: 1.31.2;
pass lint on i386

Prevent regcomp/regexec DoS attacks by limiting the amount of memory used
and the level of recursion. Thanks to Maksymilian Arciemowicz for discovery
and help with the implementation.

sign-compare fixes

branches: 1.28.22;
Rearrange headers for better portability.

ANSIfy.

Nuke __P.

remove unused label.

revert previous error check.

Coverity CID 769: Avoid NULL deref.

Coverity CID 770: Avoid NULL deref.

constify and remove __UNCONST.

WARNS=4

make othercase() return int rather than char, to avoid sign extension
bug with character codes >= 128

fixes PR lib/26986 by Alexander Becher

Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22280, verified by myself.

Passing "char" values to ctype(3) functions is problematic.
If an argument of a ctype function is outside "unsigned char"
and if it is not EOF, the behavior is undefined.

The isascii(3) is the sole exception of above and it was used to
be used to check a value was valid for other ctype functions in
ancient systems. On modern systems, the ctype functions take
all values of "unsigned char", and this check is obsolete and
even wrong for non-ASCII systems. However, we leave the isascii()
untouched for now, so as not to change the current behavior.

branches: 1.16.4;
Delint.
Remove trailing ; from uses of __weak_alias(). The macro inserts this if
needed.

back out the #ifdef _DIAGNOSTIC argument checks; too many people complained.
_DIAGASSERT() is still retained.

* use _DIAGASSERT() to check pointer arguments against NULL and file
descriptors against -1 (as appropriate).
* add actual checks which to detect stuff that would trigger_DIAGASSERT(),
and attempt to return a sane error condition.
* knf some code
* remove some `register' decls.

the first two items result in the addition of code similar to the
following in various functions:

_DIAGASSERT(path != NULL)
#ifdef _DIAGNOSTIC
if (path == NULL) {
errno = EFAULT;
return (-1);
}
#endif

Minor size_t!=int related cleanup, only effective on the alpha.
btw: the maximum length of an RE is limited by the "int" range, also
on the alpha. "sopno" is "int", and "int"s are used as counters within
the code, so it would need some work to change this. I only don't know
how one could test it...

Change some function arguments to appropriate types. This makes lint
happy without casts.

Delint:
- we don't need to use longs; convert to use int32_t.
- remove break statements after returns.
- cast things properly.

constify some tables.

remove obsolete register declarations

If port provides __weak_alias(), provide an Standard C and POSIX pure
identifier namespace by renaming non standard functions and variables
such that they have a leading underscore. The library will use those
names internally. Weak aliases are used to provide the original names
to the API.

This is only the first part of this change. It is most of the functions
which are implemented in C for all NetBSD ports. Subsequent changes are
to add the same support to the remaining C files, to assembly files, and
to the automagically generated assembly source used for system calls.
When all of the above is done, ports with weak alias support should add
a definition for __weak_alias to <sys/cdefs.h>.

Fix RCSID's
Fix gcc warnings.
Add missing prototypes
#if 0 unused functions

add unintrusive Ids

clean up import; kill old cruft.

Upgrade regex routines to alpha3.4.

Upgrade regex routines to alpha3.3.

Update to Henry's Nov 2, 1993 alpha3.2 release.

branches: 1.1.1;
Henry Spencer's POSIX.2 compatibile regular expression matching routines.

Clean up deleted files.

Update to Henry's Nov 2, 1993 alpha3.2 release.

Henry Spencer's POSIX.2 compatibile regular expression matching routines.

regerror(3): Allow null errbuf if errbuf_size is zero.

The man page says:

If errbuf_size is 0, errbuf is ignored but the return value is still
correct.

POSIX says:

If errbuf_size is 0, regerror() shall ignore the errbuf argument,
and return the size of the buffer needed to hold the generated
string.

https://pubs.opengroup.org/onlinepubs/9699919799/functions/regerror.html

from enh@google.com

Arrange for tools build

sync with FreeBSD:
- NLS support
- GNU extensions
- bug fixes

Rearrange headers for better portability.

ANSIfy.

Nuke __P.

constify and remove __UNCONST.

WARNS=4

Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22280, verified by myself.

use strlcpy where it is more appropriate.

branches: 1.16.6;
Delint.
Remove trailing ; from uses of __weak_alias(). The macro inserts this if
needed.

back out the #ifdef _DIAGNOSTIC argument checks; too many people complained.
_DIAGASSERT() is still retained.

The previous assertion change was incorrect: the preg argument is permitted to
be NULL (part of the interface definition!) unless errcode is REG_ATOI, which
is a non-portable extension.

Also, remove assertions from the local regatoi() function, as they are either
redundant or will never fail due to the buffer allocation for that argument in
regerror().

* use _DIAGASSERT() to check pointer arguments against NULL and file
descriptors against -1 (as appropriate).
* add actual checks which to detect stuff that would trigger_DIAGASSERT(),
and attempt to return a sane error condition.
* knf some code
* remove some `register' decls.

the first two items result in the addition of code similar to the
following in various functions:

_DIAGASSERT(path != NULL)
#ifdef _DIAGNOSTIC
if (path == NULL) {
errno = EFAULT;
return (-1);
}
#endif

correct a comment, minor formatting

Delint:
- we don't need to use longs; convert to use int32_t.
- remove break statements after returns.
- cast things properly.

const poisoning.

constify some tables.

remove obsolete register declarations

If port provides __weak_alias(), provide an Standard C and POSIX pure
identifier namespace by renaming non standard functions and variables
such that they have a leading underscore. The library will use those
names internally. Weak aliases are used to provide the original names
to the API.

This is only the first part of this change. It is most of the functions
which are implemented in C for all NetBSD ports. Subsequent changes are
to add the same support to the remaining C files, to assembly files, and
to the automagically generated assembly source used for system calls.
When all of the above is done, ports with weak alias support should add
a definition for __weak_alias to <sys/cdefs.h>.

Add braces in initializers.
Fix RCSID's
Remove unused variables

- convert unsafe strcpy(), strcat() and sprintf() to the `n' versions.
- some KNF.

add unintrusive Ids

clean up import; kill old cruft.

Update to Henry's Nov 2, 1993 alpha3.2 release.

branches: 1.1.1;
Henry Spencer's POSIX.2 compatibile regular expression matching routines.

Clean up deleted files.

Update to Henry's Nov 2, 1993 alpha3.2 release.

Henry Spencer's POSIX.2 compatibile regular expression matching routines.

regex.3: brush up markup

Use \N for backreferences in both places for consistency and to make
it more obviously different from \n (besides the different fonts, that
might not be too obvious).

Use \&. instead of .\& to protect punctuation.

Fix section header (Anonymous)

branches: 1.33.4;
Sections 2 and 3 have RETURN VALUES, not DIAGNOSTICS

Underscore is a word character (thanks uwe@)

Remove trailing whitespace.

improve wording.

Document the "C" language escapes supported in GNU mode.

Restore NetBSD RCS Ids.

sync with FreeBSD:
- NLS support
- GNU extensions
- bug fixes

Document ragasub(3) & regnsub(3) implementation detail

Added note:
Only 10 elements of the rm array can be used.

Sponsored by <The NetBSD Foundation>

Remove workaround for ancient HTML generation code.

catch up with regsub -> regnsub

add reg{,a}sub

Use Pq or Po macro for better output rather than putting raw open paren
at the end of line.

Use .In for header files instead of .Ar Pa and variations.

Improve markup.

Use semantic markup.

branches: 1.18.42;
Remove sentence about this being an alpha
version -- after twelve years it is at least beta ;)
The BUGS section is extensive enough even without it.

Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22280, verified by myself.

Use
.In header.h
instead of
.Fd #include \*[Lt]header.h\*[Gt]
Much easier to read and write, and supported by groff for ages.
Okayed by ross.

Sprinkle some restrict.

New sentence, new line. From Robert Elz.

Remove <sys/types.h> from synopsis, as per latest SUS/Posix specs.

Generate <>& symbolically.

Sort sections and add .Sx in two places.

branches: 1.10.2;
add missing ' is ' in regerror() explanation

branches: 1.9.10;
first pass at fixing up capitalization of function names and
arguments; ensure that each is correct with respect to the
implementation, rather than being correct as per english.

macroize BSD, NetBSD, FreeBSD and misc cleanup

add LIBRARY section to man page

remove illegal quotes from .Dd directives

Enhance readability by converting to use -mdoc macros.

add unintrusive Ids

clean up import; kill old cruft.

re_format name fixes from Mark Weaver

branches: 1.1.1;
Henry Spencer's POSIX.2 compatibile regular expression matching routines.

Clean up deleted files.

Upgrade regex routines to alpha3.3.

Update to Henry's Nov 2, 1993 alpha3.2 release.

Henry Spencer's POSIX.2 compatibile regular expression matching routines.

PR/58910: enh at google dot com: Fix signed character issue in character
ranges.

branches: 1.15.8;
reduce casts

sync with FreeBSD:
- NLS support
- GNU extensions
- bug fixes

Prevent regcomp/regexec DoS attacks by limiting the amount of memory used
and the level of recursion. Thanks to Maksymilian Arciemowicz for discovery
and help with the implementation.

sign-compare fixes

branches: 1.11.42;
Redo previous in a different way; cast the character held in int variable
as unsigned char just before passing isalnum() in ISWORD() rather than
fetching it as unsigned char. It is ok since EOF is never passed to ISWORD()
(though it will be a bit inefficient.)

Addresses PR#24929.

Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22280, verified by myself.

Minor size_t!=int related cleanup, only effective on the alpha.
btw: the maximum length of an RE is limited by the "int" range, also
on the alpha. "sopno" is "int", and "int"s are used as counters within
the code, so it would need some work to change this. I only don't know
how one could test it...

Back out part of the last change. This broke on the alpha (or wherever
sizeof(u_int32_t) != sizeof(*)), at least in cases with re->re_g->nstates
between 32 and 64.
Primary reason for the breakage was that the "states1" definition didn't
work as expected. (It didn't work before either, but this was not noticed
due to sizeof(long)==sizeof(*).)
The alpha can handle larger problems with the "small" state machine model
if a "long" is used as state variable, so it is better to keep the old
definition here. (u_int32_t is left for the "operator" variables.)
Use "int" as "sopno" - this is used as index into the states field, there
is no point in using a fized-size type.

Delint:
- we don't need to use longs; convert to use int32_t.
- remove break statements after returns.
- cast things properly.

qualify opcode constants with long, so that bad things don't happen when long
!= 32 bits. This might need a bit more thought (i.e. why use long here to
begin with, when int32_t might be a better choice), but for now it's good
enough. From Ross Harvey in PR 3450, extended by me to cover the rest of
the opcode constants and masks.

add unintrusive Ids

clean up import; kill old cruft.

Upgrade regex routines to alpha3.3.

Update to Henry's Nov 2, 1993 alpha3.2 release.

branches: 1.1.1;
Henry Spencer's POSIX.2 compatibile regular expression matching routines.

Arrange for tools build

Add glue to disable locale code in order to be smaller.

reduce casts

sync with FreeBSD:
- NLS support
- GNU extensions
- bug fixes

PR/45989: Martin Husemann: lint invocation does include -w only on i386

- turn lint -w for all the platforms after fixing the lint warnings.
- add _DIAGASSERTS() for casts that would assign values to types that
would not fit.
- change types, add casts
- change into ansii prototypes
- turn on _DIAGNOSTIC for libc (during current, to be eliminated for release
builds)

approved by core@

branches: 1.21.6;
sign-compare fixes

branches: 1.20.22;
Rearrange headers for better portability.

ANSIfy.

WARNS=4

Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22280, verified by myself.

turn a macro into a simple statement.

branches: 1.15.6;
Delint.
Remove trailing ; from uses of __weak_alias(). The macro inserts this if
needed.

back out the #ifdef _DIAGNOSTIC argument checks; too many people complained.
_DIAGASSERT() is still retained.

* use _DIAGASSERT() to check pointer arguments against NULL and file
descriptors against -1 (as appropriate).
* add actual checks which to detect stuff that would trigger_DIAGASSERT(),
and attempt to return a sane error condition.
* knf some code
* remove some `register' decls.

the first two items result in the addition of code similar to the
following in various functions:

_DIAGASSERT(path != NULL)
#ifdef _DIAGNOSTIC
if (path == NULL) {
errno = EFAULT;
return (-1);
}
#endif

Back out part of the last change. This broke on the alpha (or wherever
sizeof(u_int32_t) != sizeof(*)), at least in cases with re->re_g->nstates
between 32 and 64.
Primary reason for the breakage was that the "states1" definition didn't
work as expected. (It didn't work before either, but this was not noticed
due to sizeof(long)==sizeof(*).)
The alpha can handle larger problems with the "small" state machine model
if a "long" is used as state variable, so it is better to keep the old
definition here. (u_int32_t is left for the "operator" variables.)
Use "int" as "sopno" - this is used as index into the states field, there
is no point in using a fized-size type.

Delint:
- we don't need to use longs; convert to use int32_t.
- remove break statements after returns.
- cast things properly.

remove obsolete register declarations

If port provides __weak_alias(), provide an Standard C and POSIX pure
identifier namespace by renaming non standard functions and variables
such that they have a leading underscore. The library will use those
names internally. Weak aliases are used to provide the original names
to the API.

This is only the first part of this change. It is most of the functions
which are implemented in C for all NetBSD ports. Subsequent changes are
to add the same support to the remaining C files, to assembly files, and
to the automagically generated assembly source used for system calls.
When all of the above is done, ports with weak alias support should add
a definition for __weak_alias to <sys/cdefs.h>.

Fix RCSID's
Remove unused variable

fix a slight bogon (found by lint) introduced in rev 1.5 (by me, no less!).
Don't cast 'INC()'s argument's type, since it's an lvalue and cast
variables aren't lvalues.

add unintrusive Ids

make these safe for a 64-bit world.

clean up import; kill old cruft.

Upgrade regex routines to alpha3.3.

Update to Henry's Nov 2, 1993 alpha3.2 release.

branches: 1.1.1;
Henry Spencer's POSIX.2 compatibile regular expression matching routines.

Arrange for tools build

Add glue to disable locale code in order to be smaller.

reduce casts

sync with FreeBSD:
- NLS support
- GNU extensions
- bug fixes

Rearrange headers for better portability.

ANSIfy.

Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22280, verified by myself.

Delint.
Remove trailing ; from uses of __weak_alias(). The macro inserts this if
needed.

back out the #ifdef _DIAGNOSTIC argument checks; too many people complained.
_DIAGASSERT() is still retained.

* use _DIAGASSERT() to check pointer arguments against NULL and file
descriptors against -1 (as appropriate).
* add actual checks which to detect stuff that would trigger_DIAGASSERT(),
and attempt to return a sane error condition.
* knf some code
* remove some `register' decls.

the first two items result in the addition of code similar to the
following in various functions:

_DIAGASSERT(path != NULL)
#ifdef _DIAGNOSTIC
if (path == NULL) {
errno = EFAULT;
return (-1);
}
#endif

remove another unneeded cast

Delint:
- we don't need to use longs; convert to use int32_t.
- remove break statements after returns.
- cast things properly.

remove obsolete register declarations

If port provides __weak_alias(), provide an Standard C and POSIX pure
identifier namespace by renaming non standard functions and variables
such that they have a leading underscore. The library will use those
names internally. Weak aliases are used to provide the original names
to the API.

This is only the first part of this change. It is most of the functions
which are implemented in C for all NetBSD ports. Subsequent changes are
to add the same support to the remaining C files, to assembly files, and
to the automagically generated assembly source used for system calls.
When all of the above is done, ports with weak alias support should add
a definition for __weak_alias to <sys/cdefs.h>.

Remove unused variable
Fix RCSID's

add unintrusive Ids

clean up import; kill old cruft.

Update to Henry's Nov 2, 1993 alpha3.2 release.

branches: 1.1.1;
Henry Spencer's POSIX.2 compatibile regular expression matching routines.

handle sizeof(off_t) > sizeof(size_t)

protect __RCSID the same way other reg*.c files do, so that we can use this
file in libnbcompat

rename to regnsub, regsub is a very popular name.

add reg{,a}sub

Clean up deleted files.

Henry Spencer's POSIX.2 compatibile regular expression matching routines.

Clean up deleted files.

Henry Spencer's POSIX.2 compatibile regular expression matching routines.

Clean up deleted files.

Upgrade regex routines to alpha3.4.

Upgrade regex routines to alpha3.3.

Update to Henry's Nov 2, 1993 alpha3.2 release.

Henry Spencer's POSIX.2 compatibile regular expression matching routines.

PR/56120: Chris Pinnock: build.sh (-m alpha) release fails on current on
Darwin in libc compilation
We build the regex code in tools without nls. We don't include any nls headers
for that, but on Darwin wint_t gets defined, so we end up with a compilation
error. The cleaner fix would have been to always use regex_foo_t types, but
the minimal fix is to only do this for the tools build, using cpp.

Add glue to disable locale code in order to be smaller.

sync with FreeBSD:
- NLS support
- GNU extensions
- bug fixes

Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22280, verified by myself.

add unintrusive Ids

clean up import; kill old cruft.

Upgrade regex routines to alpha3.3.

Update to Henry's Nov 2, 1993 alpha3.2 release.

branches: 1.1.1;
Henry Spencer's POSIX.2 compatibile regular expression matching routines.