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John Naylor d3f45323bb Improve code clarity in epilogue of UTF-8 verification fast path 
The previous coding was correct, but the style and commentary were a bit
vague about which operations had to happen, in what circumstances, and
in what order. Rearrange so that the epilogue does nothing in the DFA END
state. That allows turning some conditional statements in the backtracking
logic into asserts. With that, we can be more explicit about needing
to backtrack at least one byte in non-END states to ensure checking the
current byte sequence in the slow path. No change to the regression tests,
since they should be able catch deficiencies here already.

In passing, improve the comments around DFA states where the first
continuation byte has a restricted range.
 		2022-01-17 22:53:50 -05:00
config Pacify perlcritic. 2021-11-22 15:57:31 -05:00
contrib Add Boolean node 2022-01-17 10:38:23 +01:00
doc Add support for --no-table-access-method in pg_{dump,dumpall,restore} 2022-01-17 14:51:46 +09:00
src Improve code clarity in epilogue of UTF-8 verification fast path 2022-01-17 22:53:50 -05:00
.cirrus.yml ci: windows: run initdb with --no-sync. 2022-01-13 10:56:41 -08:00
.dir-locals.el Make Emacs perl-mode indent more like perltidy. 2019-01-13 11:32:31 -08:00
.editorconfig Add .editorconfig 2019-12-18 09:13:13 +01:00
.git-blame-ignore-revs Add another old commit to git-blame-ignore-revs. 2021-11-03 17:34:19 -07:00
.gitattributes gitattributes: Add new entry to silence whitespace error 2021-06-05 07:57:31 +02:00
.gitignore Support for optimizing and emitting code in LLVM JIT provider. 2018-03-22 11:05:22 -07:00
COPYRIGHT Update copyright for 2022 2022-01-07 19:04:57 -05:00
GNUmakefile.in add missing tag from commit b8c4261e5e 2021-07-01 15:47:46 -04:00
HISTORY Canonicalize some URLs 2020-02-10 20:47:50 +01:00
Makefile Don't unset MAKEFLAGS in non-GNU Makefile. 2019-06-25 09:36:21 +12:00
README Canonicalize some URLs 2020-02-10 20:47:50 +01:00
README.git Canonicalize some URLs 2020-02-10 20:47:50 +01:00
aclocal.m4 Probe $PROVE not $PERL while checking for modules needed by TAP tests. 2021-11-22 12:54:52 -05:00
configure Make EXEC_BACKEND more convenient on Linux and FreeBSD. 2022-01-11 00:04:33 +13:00
configure.ac Make EXEC_BACKEND more convenient on Linux and FreeBSD. 2022-01-11 00:04:33 +13:00

README 

PostgreSQL Database Management System
=====================================

This directory contains the source code distribution of the PostgreSQL
database management system.

PostgreSQL is an advanced object-relational database management system
that supports an extended subset of the SQL standard, including
transactions, foreign keys, subqueries, triggers, user-defined types
and functions.  This distribution also contains C language bindings.

PostgreSQL has many language interfaces, many of which are listed here:

	https://www.postgresql.org/download/

See the file INSTALL for instructions on how to build and install
PostgreSQL.  That file also lists supported operating systems and
hardware platforms and contains information regarding any other
software packages that are required to build or run the PostgreSQL
system.  Copyright and license information can be found in the
file COPYRIGHT.  A comprehensive documentation set is included in this
distribution; it can be read as described in the installation
instructions.

The latest version of this software may be obtained at
https://www.postgresql.org/download/.  For more information look at our
web site located at https://www.postgresql.org/.