Redo earlier fix to only prohibit sourcing directories and block special files.
char specials (/dev/tty, /dev/null, ... incl /dev/rwd0a) and fifos are OK.
Posix actually requires that we find only readable files - that is not yet
implemented (doing it sanely, without opening the file twice, is going to
take some more modifications to code elsewhere).
More fixes to the shell parser to prevent empty simple commands (where
empty means no significant text at all) - as discussed on tech-userlevel
this still allows { } (which can be useful in function definitions, not
really anywhere else though) except in posix mode. ( ) now generates
a syntax error, as should any other place where commands are required but
nothing is present. (nb, redirections, var assignments, even var expansions
that expand to nothing, are all OK, and avoid the error - just comments, or
whits space, are not.) This is (aside from allowing { } at all) all in
accordance with the posix spec.
setting \n as the record delimited using a numeric value rather than literal
\n - and to not incorrectly turn \n into a field separator if -R is used to
make some other char the record separator (\n becomes a field separator in
that case as long as the field separator remains "white space" but should not
be in any other case - unless set explicitly of course.)
Plus more cosmetic changes - the man page and usage are updated to make it
more clear that the 2 (or 1) params to -k are not fields (field1 and field2)
but specifiers of the beginning and end of one key field. There was an
unused 'x' option in the GETOPTS string. The usage message is reformatted
to display properly on both 80 col and > 80 col displays (on < 80 it will
still probably look pretty ugly ... perhaps not quite so bad though), and
is also updated to show the different usage for the -c case (and -C) from the
others (only 1 file permitted) - the man page synopsis has a similar update.
Using more than one of -c -C or -m generates a usage message rather than
just ignoring the -m as it did before (there was no -C before of course).
Aside from the bug fix to the interaction between -R and -t, there are no
changes that affect the way anything is sorted (or read, or written).
Discussed on tech-userlevel earlier this week.
Import tzdata2016d from ftp://ftp.iana.org/tz/releases/tzdata2016d.tar.gz
Summary of changes in tzdata2016d (2016-04-17 22:50:29 -0700):
* America/Caracas switches from -0430 to -04 on 2016-05-01 at 02:30.
* Asia/Magadan switches from +10 to +11 on 2016-04-24 at 02:00.
* New zone Asia/Tomsk, split off from Asia/Novosibirsk.
* New zone Europe/Kirov, split off from Europe/Volgograd.
* Russia and nearby locations had daylight-saving transitions on
1992-03-29 at 02:00 and 1992-09-27 at 03:00, instead of on
1992-03-28 at 23:00 and 1992-09-26 at 23:00.
* Many corrections to historical time in Kazakhstan from 1991
through 2005.
* Mention Internet RFCs 7808 (TZDIST) and 7809 (CalDAV time zone references).
Summary of changes in tzdata2016c (2016-03-23 00:51:27 -0700):
* Azerbaijan no longer observes DST.
* Chile reverts from permanent to seasonal DST.
* Europe/Kaliningrad and Europe/Vilnius changed from +03/+04 to
+02/+03 on 1989-03-26, not 1991-03-31.
* Several updates and URLs for historical and proposed Russian changes.
Import tzdata2016d from ftp://ftp.iana.org/tz/releases/tzdata2016d.tar.gz
Summary of changes in tzdata2016d (2016-04-17 22:50:29 -0700):
* America/Caracas switches from -0430 to -04 on 2016-05-01 at 02:30.
* Asia/Magadan switches from +10 to +11 on 2016-04-24 at 02:00.
* New zone Asia/Tomsk, split off from Asia/Novosibirsk.
* New zone Europe/Kirov, split off from Europe/Volgograd.
* Russia and nearby locations had daylight-saving transitions on
1992-03-29 at 02:00 and 1992-09-27 at 03:00, instead of on
1992-03-28 at 23:00 and 1992-09-26 at 23:00.
* Many corrections to historical time in Kazakhstan from 1991
through 2005.
* Mention Internet RFCs 7808 (TZDIST) and 7809 (CalDAV time zone references).
Summary of changes in tzdata2016c (2016-03-23 00:51:27 -0700):
* Azerbaijan no longer observes DST.
* Chile reverts from permanent to seasonal DST.
* Europe/Kaliningrad and Europe/Vilnius changed from +03/+04 to
+02/+03 on 1989-03-26, not 1991-03-31.
* Several updates and URLs for historical and proposed Russian changes.
Summary of changes in tzdata2016d (2016-04-17 22:50:29 -0700):
* America/Caracas switches from -0430 to -04 on 2016-05-01 at 02:30.
* Asia/Magadan switches from +10 to +11 on 2016-04-24 at 02:00.
* New zone Asia/Tomsk, split off from Asia/Novosibirsk.
* New zone Europe/Kirov, split off from Europe/Volgograd.
* Russia and nearby locations had daylight-saving transitions on
1992-03-29 at 02:00 and 1992-09-27 at 03:00, instead of on
1992-03-28 at 23:00 and 1992-09-26 at 23:00.
* Many corrections to historical time in Kazakhstan from 1991
through 2005.
* Mention Internet RFCs 7808 (TZDIST) and 7809 (CalDAV time zone references).
Summary of changes in tzdata2016c (2016-03-23 00:51:27 -0700):
* Azerbaijan no longer observes DST.
* Chile reverts from permanent to seasonal DST.
* Europe/Kaliningrad and Europe/Vilnius changed from +03/+04 to
+02/+03 on 1989-03-26, not 1991-03-31.
* Several updates and URLs for historical and proposed Russian changes.
