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Michael Paquier 59f47fb98d unaccent: Add support for quoted translated characters ... As reported in bug #18057, the extension unaccent removes in its rule file whitespace characters that are intentionally specified when building unaccent.rules from UnicodeData.txt, causing an incorrect translation for some characters like numeric symbols. This is caused by the fact that all whitespaces before and after the origin and target characters are all discarded (this limitation is documented). This commit makes possible the use of quotes around target characters, so as whitespaces can be considered part of target characters. Some target characters use a double quote, these require an extra double quote. The documentation is updated to show how to use quoted areas, generate_unaccent_rules.py is updated to generate unaccent.rules and a couple of tests are added for numeric symbols. While working on this patch, I have implemented a fake rule file to test the parsing logic implemented, which is not included here as it would just consume extra cycles in the tests, and it requires the manipulation of an installation tree to be able to work correctly. As this requires a change of format in unaccent.rules, this cannot be backpatched, unfortunately. The idea to use double quotes as escaped characters comes from Tom Lane. Reported-by: Martin Schlossarek Author: Michael Paquier Discussion: https://postgr.es/m/18057-62712cad01bd202c@postgresql.org		2 years ago
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unaccent.sql	unaccent: Add support for quoted translated characters	2 years ago