- Copy stable/10 (r259064) to releng/10.0 as part of the
10.0-RELEASE cycle.
- Update __FreeBSD_version [1]
- Set branch name to -RC1

[1] 10.0-CURRENT __FreeBSD_version value ended at '55', so
start releng/10.0 at '100' so the branch is started with
a value ending in zero.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Add the Clang specific -Wmissing-variable-declarations to WARNS=6.

This compiler flag enforces that that people either mark variables
static or use an external declarations for the variable, similar to how
-Wmissing-prototypes works for functions.

Due to the fact that Yacc/Lex generate code that cannot trivially be
changed to not warn because of this (lots of yy* variables), add a
NO_WMISSING_VARIABLE_DECLARATIONS that can be used to turn off this
specific compiler warning.

Announced on: toolchain@

Remove redundant declaration of yyparse

Reported by: tinderbox

Minor mdoc nits.

rm[0].rm_so must be zero (an explicit check is made for zero in the
outer if condition)

Reviewed by: se
Approved by: cperciva

Whitespace cleanup:
o Wrap sentences on to new lines
o Cleanup trailing whitespace

Found with: textproc/igor
MFC after: 1 week
X-MFC-With: r232157

Fix various typos in manual pages.

Submitted by: amdmi3
PR: 165431
MFC after: 1 week

Fix style, since this file has just been touched in a major way.
No actual code changes.

Some refactoring for easier maintenance of the code. This is a follow-up
to re-establishment of 64bit arithmetic, but is committed separately, to
not obscure that conversion. This commit does not change the observed
behaviour of expr in any way. Style will be fixed in a follow-up commit.

Make /bin/expr support 64bit numeric range and range checks by default,
again. This brings back the behaviour of expr in FreeBSD-4, which had been
reverted due to an assumed incompatbility with POSIX.1 for FreeBSD-5.

This issue has been discussed in the freebsd-standards list, and the
consensus was, that POSIX.1 is in fact not violated by this extension,
since it affects only cases of POSIX undefined behaviour (overflow of
signed long).

Other operating systems did upgrade their versions of expr to support
64bit range, after it had been initially brought to FreeBSD. They have
used it for a decade without problems, meanwhile.

The -e option is retained, but it will only select less strict checking
of numeric parameters (leading white-space, leading "+" are allowed and
skipped, an empty string is considered to represent 0 in numeric context.)
The call of check_utility_compat() as a means of establishing backwards
compatibility with FreeBSD-4 is considered obsolete, but preserved in
this commit. It is expected to be removed in a later revision of this
file.
Reviewed by: bde, das, jilles
MFC after: 2 month (those parts that do not violate POLA)

expr(1): Add sh(1) versions of examples, remove an incorrect example.

The three examples are better done using sh(1) itself these days.

The example
expr -- "$a" : ".*"
is incorrect in the general case, as "$a" may be an operator.

MFC after: 2 weeks

Fix markup.

Correct typos containing my login name (plus one more in expr.y).
Found courtesy of a recursive grep in the wrong directory.

Add the new standard EXIT STATUS section where appropriate.
Sort standard sections in the (documented) preferred order.

Removed harmful empty lines that crept in during the copyright
header update.

/*- or .\"- or #- to begin license clauses.

Remove BUGS section that talked about missing multibyte character support.
We have support now that the regular expression routines do.

Document missing multibyte character handling in utilities specified
by POSIX.

Get this area compiling with the highest WARNS= that it works with.
Obsolete WFORMAT= junk also removed where possible.

OK'ed by: obrien
Tested on: sparc64, alpha, i386

mdoc(7) police:

Revert to using the .Tn POSIX and .Tn ANSI instead of \*[Px] and \*[Ai]
strings; using these strings is unsafe in troff mode, as they include a
change in a font size.

Approved by: re

mdoc(7) police: markup fixes.

Approved by: re

Create a small library function, check_utility_compat(3), to determine
whether a named utility should behave in FreeBSD 4.x-compatible mode
or in a standard mode (default standard). The configuration is done
malloc(3)-style, with either an environment variable or a symlink.

Update expr(1) to use this new interface.

mdoc(7) police: markup nits.

EXPR_COMPAT should imply -e, since there is no way to specify it otherwise,
and -e reflects the historic behavior of FreeBSD's expr.

The response to my POSIX interpretation request says that `expr'
is required to be oblivious to overflow and to use the data type `long'.
(Division by zero is undefined in ISO C so it's still OK to check for it
here.) Add a new `-e' flag to get the old, more useful behavior.

Provide an environment variabloe, EXPR_COMPAT, which disables option
parsing for compatibility with old implementations.

Disable -Werror when building -- the old version of gcc used on IA32 can't
deal with C99 formats.

Typo (if => of).

Add a word of caution about integer arithmetic range and overflow detection.

Fix a few formatting brainos and make the formatting of the EXAMPLES
section somewhat clearer.

Make expr POSIX-compliant, and fix some bugs. Specifically:

- expr must conform to the Utility Syntax Guidelines, so use
getopt() to eat the (non-existent) options.

- Use the Standard type intmax_t for arithmetic.

- If an argument cannot be *completely* converted to an integer, then
it is a string.

Additionally make some style cleanups near the modified lines. This
utility is still not completely style-compliant.

o __P has been reoved
o Old-style K&R declarations have been converted to new C89 style
o register has been removed
o prototype for main() has been removed (gcc3 makes it an error)
o int main(int argc, char *argv[]) is the preferred main definition.
o Attempt to not break style(9) conformance for declarations more than
they already are.
o gc some #ifdef sun ... #endif code

Approved by: arch@, new style(9)

Default to WARNS=2. Binary builds that cannot handle this must explicitly
set WARNS=0.

Reviewed by: mike

Remove whitespace at EOL.

Fix warnings to compile with WARNS=2 on i386 and alpha

Reviewed by: bde

Prepare for mdoc(7)NG.

mdoc(7) police: use the new features of the Nm macro.

Add overflow tests

Extend numeric operations to support 64 bit numbers.

$Id$ -> $FreeBSD$

Add cross-references to test(1) and expr(1) respectively.

PR: docs/9111
Submitted by: Josh Gilliam <josh@quick.net>

Correct use of .Nm.

Simplified using new yacc rules and by not generating y.tab.h.

Revert $FreeBSD$ to $Id$

Make the long-awaited change from $Id$ to $FreeBSD$

This will make a number of things easier in the future, as well as (finally!)
avoiding the Id-smashing problem which has plagued developers for so long.

Boy, I'm glad we're not using sup anymore. This update would have been
insane otherwise.

Backout yacc changes

Use default yacc rule.

``mv'' -> ``mv -f''
``rm'' -> ``rm -f''
so mv/rm may not ask for confirmation if you are not root

Fix some spelling errors.

Fix my own brokeness for the colon operator, when one of the arguments
was a valid integer. The actual decision between integer and string
is now context-dependant on the operator being used.

expr(1) didn't comply to Posix.2 and its own man page: any
comparisions have been made as string comparisions, even in cases
where both operands clearly qualified as integers.

The fix is to make the parser properly analyzing whether an operand is
a valid integer or not.

Remove trailing whitespace.

Reviewed by: phk

You will find enclosed some changes to make gcc -Wall more happy in
/usr/src/bin. Note that some patches are still needed in that directory.

I (Joerg) finished most of Philippe's cleanup. /bin/sh will still
need *allot* of work, however.

Submitted by: charnier@lirmm.fr (Philippe Charnier)

Added $Id$

Explicitly include <sys/types.h> before including <regex.h>. This is
apparently required by POSIX. It will be required in practice when
the bogus inclusion of <sys/types.h> is removed from <stdio.h>.

Fix gross spelling and typographical errors pointed out by Keith Bostic.

Take -lgnuregex back out. Linking with it causes 'make install' to fail.

Document the new, less restrictive, behavior of the matching operator.

Allow expressions like "expr 'ABC' : '^.*$' to work as is done in other
expr implementations.

Fix grammar to eliminate support for unary minus expressions -- they
weren't supported, they aren't standard, and they caused expr to dump
core.

1003.2 requires that lexical comparisons be done in locale specific manner,
so we have to use strcoll() instead of strcmp().
1003.2 requires that a null string be returned if a string does not match
a \( \) subexpression.
Replaced fprintf/exit with calls to err and errx as appropriate.

Remove GNU regex.[ch] and use system's regex library. The library is still
GNU regex for now, but will be replaced as soon as an alternative is made
availiable.

install new manual page

Update to my latest expr (fixes bugs with comparison and matching operators)
Add man page I wrote.

added POSIX regex to expr

This commit was generated by cvs2svn to compensate for changes in r4,
which included commits to RCS files with non-trunk default branches.