Fixed a bug in regular expressions that dates (so help me) from 1977;
it's been there from the beginning. an anchored longest match that
was longer than the number of states triggered a failure to initialize
the machine properly. many thanks to moinak ghosh for not only finding
this one but for providing a fix, in some of the most mysterious
code known to man.
fixed a storage leak in call() that appears to have been there since
1983 or so -- a function without an explicit return that assigns a
string to a parameter leaked a Cell. thanks to moinak ghosh for
spotting this very subtle one.
20030321 version:
Jul 29, 2003:
fixed (i think) the long-standing botch that included the beginning of
line state ^ for RE's in the set of valid characters; this led to a
variety of odd problems, including failure to properly match certain
regular expressions in non-US locales. thanks to ruslan for keeping
at this one.
Jul 28, 2003:
n-th try at getting internationalization right, with thanks to volker
kiefel, arnold robbins and ruslan ermilov for advice, though they
should not be blamed for the outcome. according to posix, "." is the
radix character in programs and command line arguments regardless of
the locale; otherwise, the locale should prevail for input and output
of numbers.
i have rescinded the attempt to use strcoll in expanding shorthands in
regular expressions (cclenter).
Jul 4, 2003:
fixed bug that permitted non-terminated RE, as in "awk /x".
Jun 1, 2003:
subtle change to split: if source is empty, number of elems
is always 0 and the array is not set.
Mar 14, 2003:
the internationalization changes, somewhat modified, are now
reinstated. in theory awk will now do character comparisons
and case conversions in national language, but "." will always
be the decimal point separator on input and output regardless
of national language. isblank(){} has an #ifndef.
this no longer compiles on windows: LC_MESSAGES isn't defined
in vc6++.
fixed subtle behavior in field and record splitting: if FS is
a single character and RS is not empty, \n is NOT a separator.
this tortuous reading is found in the awk book; behavior now
matches gawk and mawk.
Changes since previous version:
For the moment, the internationalization changes of nov 29 are
rolled back -- programs like x = 1.2 don't work in some locales,
because the parser is expecting x = 1,2. Until I understand this
better, this will have to wait.
commit). This can fix problems if it happens that those variables contain
spaces (or some other special character).
Suggested by Christopher Richards in private mail.
will fail. Also fix a "typo" in the manpage (Awk->Nawk). Patch provided by
Christopher Richards in PR pkg/19344.
While I'm here, move manpage generation to the post-build target (where it
should be) and use INSTALL_MAN to install it (instead of generating it in
place).
2. Update to 20021129.
Changes since 20020628 (from FIXES file):
modified b.c (with tiny changes in main and run) to support
locales, using strcoll and iswhatever tests for posix character
classes. thanks to ruslan ermilov (ru@freebsd.org) for code.
the function isblank doesn't seem to have propagated to any
header file near me, so it's there explicitly. not properly
tested on non-ascii character sets by me.
so update this to version nawk-20020628.
Changes: (note credit to jdolecek :)
Jun 28, 2002:
modified run/format() and tran/getsval() to do a slightly better
job on using OFMT for output from print and CONVFMT for other
number->string conversions, as promised by posix and done by
gawk and mawk. there are still places where it doesn't work
right if CONVFMT is changed; by then the STR attribute of the
variable has been irrevocably set. thanks to arnold robbins for
code and examples.
fixed subtle bug in format that could get core dump. thanks to
Jaromir Dolecek <jdolecek@NetBSD.org> for finding and fixing.
minor cleanup in run.c / format() at the same time.
added some tests for null pointers to debugging printf's, which
were never intended for external consumption. thanks to dave
kerns (dkerns@lucent.com) for pointing this out.
GNU compatibility: an empty regexp matches anything (thanks to
dag-erling smorgrav, des@ofug.org). subject to reversion if
this does more harm than good.
pervasive small changes to make things more const-correct, as
reported by gcc's -Wwrite-strings. as it says in the gcc manual,
may be more nuisance than useful. provoked by a suggestion
and code from arnaud desitter, arnaud@nimbus.geog.ox.ac.uk
minor documentation changes to note that this now compiles out
of the box on Mac OS X.
Feb 10, 2002:
changed types in posix chars structure to quiet solaris cc.
Jan 1, 2002:
fflush() or fflush("") flushes all files and pipes.
length(arrayname) returns number of elements; thanks to
arnold robbins for suggestion.
added a makefile.win to make it easier to build on windows.
based on dan allen's buildwin.bat.
Nov 16, 2001:
added support for posix character class names like [:digit:],
which are not exactly shorter than [0-9] and perhaps no more
portable. thanks to dag-erling smorgrav for code.
Feb 16, 2001:
removed -m option; no longer needed, and it was actually
broken (noted thanks to volker kiefel).
Feb 10, 2001:
fixed an appalling bug in gettok: any sequence of digits, +,-, E, e,
and period was accepted as a valid number if it started with a period.
this would never have happened with the lex version.
other 1-character botches, now fixed, include a bare $ and a
bare " at the end of the input.
Feb 7, 2001:
more (const char *) casts in b.c and tran.c to silence warnings.
Changes (for detailed list, see FIXES which is part of distribution):
* various bugfixes
* allow \n explicitly in character classes
* some 8bit cleanups
The checksum on the old package corresponded to the 19990620 source,
whilst the package thought it was 19980211. Fix package name accordingly.
Unfortunately, there is no version number or date on the awk distfile,
so put the distfile in its own uniquely-named directory.
Just for the record, there are a number of bug fixes in the 19990620
source:
Jun 20, 1999:
added *bp in gettok in lex.c; appears possible to exit function
without terminating the string. thanks to russ cox.
Jun 2, 1999:
added function stdinit() to run to initialize files[] array,
in case stdin, etc., are not constants; some compilers care.
May 10, 1999:
replaced the ERROR ... FATAL, etc., macros with functions
based on vprintf, to avoid problems caused by overrunning
fixed-size errbuf array. thanks to ralph corderoy for the
impetus, and for pointing out a string termination bug in
qstring as well.
Apr 21, 1999:
fixed bug that caused occasional core dumps with commandline
variable with value ending in \. (thanks to nelson beebe for
the test case.)
Apr 16, 1999:
with code kindly provided by Bruce Lilly, awk now parses
/=/ and similar constructs more sensibly in more places.
Apr 5, 1999:
changed true/false to True/False in run.c to make it
easier to compile with C++. Added some casts on malloc
and realloc to be honest about casts; ditto. changed
ltype int to long in struct rrow to reduce some 64-bit
complaints; other changes scattered throughout for the
same purpose. thanks to Nelson Beebe for these portability
improvements.
removed some horrible pointer-int casting in b.c and elsewhere
by adding ptoi and itonp to localize the casts, which are
all benign. fixed one incipient bug that showed up on sgi
in 64-bit mode.
reset lineno for new source file; include filename in error
message. also fixed line number error in continuation lines.
(thanks to Nelson Beebe for both of these.)
Mar 24, 1999:
Nelson Beebe notes that irix 5.3 yacc dies with a bogus
error; use a newer version or switch to bison, since sgi
is unlikely to fix it.
Mar 5, 1999:
changed isnumber to is_number to avoid the problem caused by
versions of ctype.h that include the name isnumber.
distribution now includes a script for building on a Mac,
thanks to Dan Allen.
Feb 20, 1999:
fixed memory leaks in run.c (call) and tran.c (setfval).
thanks to Stephen Nutt for finding these and providing the fixes.
Jan 13, 1999:
replaced srand argument by (unsigned int) in run.c;
avoids problem on Mac and potentially on Unix & Windows.
thanks to Dan Allen.
added a few (int) casts to silence useless compiler warnings.
e.g., errorflag= in run.c jump().
added proctab.c to the bundle outout; one less thing
to have to compile out of the box.
added calls to _popen and _pclose to the win95 stub for
pipes (thanks to Steve Adams for this helpful suggestion).
seems to work, though properties are not well understood
by me, and it appears that under some circumstances the
pipe output is truncated. Be careful.
Oct 19, 1998:
fixed a couple of bugs in getrec: could fail to update $0
after a getline var; because inputFS wasn't initialized,
could split $0 on every character, a misleading diversion.
fixed caching bug in makedfa: LRU was actually removing
least often used.
thanks to ross ridge for finding these, and for providing
great bug reports.
