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Add support for automatically updating Unicode derived files

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We currently have several sets of files generated from data provided
by Unicode.  These all have ad hoc rules and instructions for updating
when new Unicode versions appear, and it's not done consistently.

This patch centralizes and automates the process and makes it part of
the release checklist.  The Unicode and CLDR versions are specified in
Makefile.global.in.  There is a new make target "update-unicode" that
downloads all the relevant files and runs the generation script.

There is also a new script for generating the table of combining
characters for ucs_wcwidth().  That table is now in a separate include
file rather than hardcoded into the middle of other code.  This is
based on the script that was used for generating
d8594d123c, but the script itself wasn't
committed at that time.

Reviewed-by: John Naylor <john.naylor@2ndquadrant.com>
Discussion: https://www.postgresql.org/message-id/flat/c8d05f42-443e-6c23-819b-05b31759a37c@2ndquadrant.com
This commit is contained in:
Peter Eisentraut
2020-01-09 09:54:47 +01:00
parent f5fd995a1a
commit f85a485f89
13 changed files with 313 additions and 94 deletions
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10
contrib/unaccent/generate_unaccent_rules.py
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@ -20,13 +20,11 @@
# option is enabled, the XML file of this transliterator [2] -- given as a
# command line argument -- will be parsed and used.
#
# Ideally you should use the latest release for each data set. For
# Latin-ASCII.xml, the latest data sets released can be browsed directly
# via [3]. Note that this script is compatible with at least release 29.
# Ideally you should use the latest release for each data set. This
# script is compatible with at least CLDR release 29.
#
# [1] https://www.unicode.org/Public/8.0.0/ucd/UnicodeData.txt
# [2] https://raw.githubusercontent.com/unicode-org/cldr/release-34/common/transforms/Latin-ASCII.xml
# [3] https://github.com/unicode-org/cldr/tags
# [1] https://www.unicode.org/Public/${UNICODE_VERSION}/ucd/UnicodeData.txt
# [2] https://raw.githubusercontent.com/unicode-org/cldr/${TAG}/common/transforms/Latin-ASCII.xml
# BEGIN: Python 2/3 compatibility - remove when Python 2 compatibility dropped
# The approach is to be Python3 compatible with Python2 "backports".