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Just turning the crank ...
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Commit a2dabf0e1dda93c8 had the bright idea that it could modify a "const"
global variable if it merely casted away const from a pointer. This does
not work on platforms where the compiler puts "const" variables into
read-only storage. Depressingly, we evidently have no such platforms in
our buildfarm ... an oversight I have now remedied. (The one platform
that is known to catch this is recent OS X with -fno-common.)
Per report from Chris Ruprecht. Back-patch to 9.5 where the bogus
code was introduced.
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Andreas Karlsson and Robert Haas
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Backpatch certain files through 9.1
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Formerly, if "psql -o foo" failed to open the output file "foo", it would
print an error message but then carry on as though -o had not been
specified at all. This seems contrary to expectation: a program that
cannot open its output file normally fails altogether. Make psql do
exit(1) after reporting the error.
If "\o foo" failed to open "foo", it would print an error message but then
reset the output file to stdout, as if the argument had been omitted.
This is likewise pretty surprising behavior. Make it keep the previous
output state, instead.
psql keeps SIGPIPE interrupts disabled when it is writing to a pipe, either
a pipe specified by -o/\o or a transient pipe opened for purposes such as
using a pager on query output. The logic for this was too simple and could
sometimes re-enable SIGPIPE when a -o pipe was still active, thus possibly
leading to an unexpected psql crash later.
Fixing the last point required getting rid of the kluge in PrintQueryTuples
and ExecQueryUsingCursor whereby they'd transiently change the global
queryFout state, but that seems like good cleanup anyway.
Back-patch to 9.5 but not further; these are minor-enough issues that
changing the behavior in stable branches doesn't seem appropriate.
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The formatting modes that depend on knowledge of the terminal window width
did not work right when printing a query result that's been fetched in
sections (as a result of FETCH_SIZE). ExecQueryUsingCursor() would force
use of the pager as soon as there's more than one result section, and then
print.c would see an output file pointer that's not stdout and incorrectly
conclude that the terminal window width isn't relevant.
This has been broken all along for non-expanded "wrapped" output format,
and as of 9.5 the issue affects expanded mode as well. The problem also
caused "\pset expanded auto" mode to invariably *not* switch to expanded
output in a segmented result, which seems to me to be exactly backwards.
To fix, we need to pass down an "is_pager" flag to inform the print.c
subroutines that some calling level has already replaced stdout with a
pager pipe, so they should (a) not do that again and (b) nonetheless honor
the window size. (Notably, this makes the first is_pager test in
print_aligned_text() not be dead code anymore.)
This patch is a bit invasive because there are so many existing calls of
printQuery()/printTable(), but fortunately all but a couple can just pass
"false" for the added parameter.
Back-patch to 9.5 but no further. Given the lack of field complaints,
it's not clear that we should change the behavior in stable branches.
Also, the API change for printQuery()/printTable() might possibly break
third-party code, again something we don't like to do in stable branches.
However, it's not quite too late to do this in 9.5, and with the larger
scope of the problem there, it seems worth doing.
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Don't force the data width to extend all the way to the right margin if it
doesn't need to. This reverts the behavior in non-wrapping cases to be
what it was in 9.4. Also, make the logic that ensures the data line width
is at least equal to the record-header line width a little less obscure.
In passing, avoid possible calculation of log10(0). Probably that's
harmless, given the lack of field complaints, but it seems risky:
conversion of NaN to an integer isn't well defined.
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We should ignore output_columns unless it's greater than zero.
A zero means we couldn't get any information from ioctl(TIOCGWINSZ);
in that case the expected behavior is to print the data at native width,
not to wrap it at the smallest possible value. print_aligned_text()
gets this consideration right, but print_aligned_vertical() lost track
of this detail somewhere along the line.
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This area was rather heavily whacked around in 6513633b9 and follow-on
commits, and it was showing it, because the logic to calculate the
allowable data width in wrapped expanded mode had only the vaguest
relationship to the logic that was actually printing the data. It was
not very close to being right about the conditions requiring overhead
columns to be added. Aside from being wrong, it was pretty unreadable
and under-commented. Rewrite it so it corresponds to what the printing
code actually does.
In passing, remove a couple of dead tests in the printing logic, too.
Per a complaint from Jeff Janes, though this doesn't look much like his
patch because it fixes a number of other corner-case bogosities too.
One such fix that's visible in the regression test results is that
although the code was attempting to enforce a minimum data width of
3 columns, it sometimes left less space than that available.
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Backpatch to 9.5 where the error was introduced.
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(Third time's the charm, I hope.)
Additional testing disclosed that this code could mangle already-localized
output from the "money" datatype. We can't very easily skip applying it
to "money" values, because the logic is tied to column right-justification
and people expect "money" output to be right-justified. Short of
decoupling that, we can fix it in what should be a safe enough way by
testing to make sure the string doesn't contain any characters that would
not be expected in plain numeric output.
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On closer inspection, those seemingly redundant atoi() calls were not so
much inefficient as just plain wrong: the author of this code either had
not read, or had not understood, the POSIX specification for localeconv().
The grouping field is *not* a textual digit string but separate integers
encoded as chars.
We'll follow the existing code as well as the backend's cash.c in only
honoring the first group width, but let's at least honor it correctly.
This doesn't actually result in any behavioral change in any of the
locales I have installed on my Linux box, which may explain why nobody's
complained; grouping width 3 is close enough to universal that it's barely
worth considering other cases. Still, wrong is wrong, so back-patch.
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This code did the wrong thing entirely for numbers with an exponent
but no decimal point (e.g., '1e6'), as reported by Jeff Janes in
bug #13636. More generally, it made lots of unverified assumptions
about what the input string could possibly look like. Rearrange so
that it only fools with leading digits that it's directly verified
are there, and an immediately adjacent decimal point. While at it,
get rid of some useless inefficiencies, like converting the grouping
count string to integer over and over (and over).
This has been broken for a long time, so back-patch to all supported
branches.
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Patch by CharSyam, plus a few more I spotted with grep.
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Patch by Szymon Guz, adjustments by me
Testing by Michael Paquier, Pavel Stehule
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If set, the pager will not be used unless this many lines are to be
displayed, even if that is more than the screen depth. Default is zero,
meaning it's disabled.
There is probably more work to be done in giving the user control over
when the pager is used, particularly when wide output forces use of the
pager regardless of how many lines there are, but this is a start.
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Also, fix pager enable selection for such cases, and other cleanups for
zero-column output.
Report by Thom Brown
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Backpatch certain files through 9.0
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This error counted the first line of a cell as "extra". The effect was
to cause far too frequent invocation of the pager. In most cases this
can be worked around (for example, by using the "less" pager with the -F
flag), so don't backpatch.
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With the unicode linestyle, this adds support to control if the
column, header, or border style should be single or double line
unicode characters. The default remains 'single'.
In passing, clean up the border documentation and address some
minor formatting/spelling issues.
Pavel Stehule, with some additional changes by me.
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In psql, expanded mode was not being displayed correctly when using
the normal ascii or unicode linestyles and border set to '3'. Now,
per the documentation, border '3' is really only sensible for HTML
and LaTeX formats, however, that's no excuse for ascii/unicode to
break in that case, and provisions had been made for psql to cleanly
handle this case (and it did, in non-expanded mode).
This was broken when ascii/unicode was initially added a good five
years ago because print_aligned_vertical_line wasn't passed in the
border setting being used by print_aligned_vertical but instead was
given the whole printTableContent. There really isn't a good reason
for vertical_line to have the entire printTableContent structure, so
just pass in the printTextFormat and border setting (similar to how
this is handled in horizontal_line).
Pointed out by Pavel Stehule, fix by me.
Back-patch to all currently-supported versions.
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collateral damage on other formats, by Sergey Muraviov.
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This includes removing tabs after periods in C comments, which was
applied to back branches, so this change should not effect backpatching.
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Incidentally, I reversed the two names in the earlier commit. The
original author was Sergey Muraviov and the reviewer was Emre
Hasegeli.
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feasible to display tables that have both many columns and some large
data in some columns (such as pg_stats).
Emre Hasegeli with review and rewriting from Sergey Muraviov and
reviewed by Greg Stark
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Update all files in head, and files COPYRIGHT and legal.sgml in all back
branches.
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Several previous commits have added columns to various \d queries without
updating their translate_columns[] arrays, leading to potentially incorrect
translations in NLS-enabled builds. Offenders include commit 893686762
(added prosecdef to \df+), c9ac00e6e (added description to \dc+) and
3b17efdfd (added description to \dC+). Fix those cases back to 9.3 or
9.2 as appropriate.
Since this is evidently more easily missed than one would like, in HEAD
also add an Assert that the supplied array is long enough. This requires
an API change for printQuery(), so it seems inappropriate for back
branches, but presumably all future changes will be tested in HEAD anyway.
In HEAD and 9.3, also clean up a whole lot of sloppiness in the emitted
SQL for \dy (event triggers): lack of translatability due to failing to
pass words-to-be-translated through gettext_noop(), inadequate schema
qualification, and sloppy formatting resulting in unnecessarily ugly
-E output.
Peter Eisentraut and Tom Lane, per bug #8702 from Sergey Burladyan
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"No rows" previously only honored the tuples-only option.
Per report from Eli Mesika
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This is the first run of the Perl-based pgindent script. Also update
pgindent instructions.
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We had two copies of this function in the backend and libpq, which was
already pretty bogus, but it turns out that we need it in some other
programs that don't use libpq (such as pg_test_fsync). So put it where
it probably should have been all along. The signal-mask-initialization
support in src/backend/libpq/pqsignal.c stays where it is, though, since
we only need that in the backend.
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This used to erroneously print an empty line. Now it prints nothing.
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When there are zero result rows, in expanded mode, "(No rows)" is
printed. So far, there was no way to turn this off. Now, when
tuples-only mode is turned on, nothing is printed in this case.
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Remove extra line at bottom of table for new 'latex' mode border=3.
Also update 'latex'-longtable 'tableattr' docs to say
'whitespace-separated' instead of 'space'.
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latex longtable is more powerful than the 'tabular' output format
'latex' uses. Also add border=3 support to 'latex'.
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Fully update git head, and update back branches in ./COPYRIGHT and
legal.sgml files.
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We had a number of variants on the theme of "malloc or die", with the
majority named like "pg_malloc", but by no means all. Standardize on the
names pg_malloc, pg_malloc0, pg_realloc, pg_strdup. Get rid of pg_calloc
entirely in favor of using pg_malloc0.
This is an essentially cosmetic change, so no back-patch. (I did find
a couple of places where psql and pg_dump were using plain malloc or
strdup instead of the pg_ versions, but they don't look significant
enough to bother back-patching.)
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commit-fest.
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Noah Misch
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Since mbvalidate() can alter the string it validates, having the
callers claim that the strings they accept are const is inappropriate.
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Apparently a copy-and-paste mistake introduced in
8ddd22f2456af0155f9c183894f481203e86b76e.
found by Coverity
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In expanded auto mode, a lot of allocated memory was not cleaned up.
found by Coverity
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Due to an apparent thinko, when printing a table in expanded mode
(\x), space would be allocated for 1 slot plus 1 byte per line,
instead of 1 slot per line plus 1 slot for the NULL terminator. When
the line count is small, reading or writing the terminator would
therefore access memory beyond what was allocated.
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Add new psql settings and command-line options to support setting the
field and record separators for unaligned output to a zero byte, for
easier interfacing with other shell tools.
reviewed by Abhijit Menon-Sen
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