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Re: Order changes in PG16 since ICU introduction

Peter Eisentraut <peter.eisentraut@enterprisedb.com>

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From: Peter Eisentraut <peter.eisentraut@enterprisedb.com>
To: Jeff Davis <pgsql@j-davis.com>, "Jonathan S. Katz" <jkatz@postgresql.org>, Robert Haas <robertmhaas@gmail.com>
Cc: Tom Lane <tgl@sss.pgh.pa.us>, Regina Obe <lr@pcorp.us>, Sandro Santilli <strk@kbt.io>, pgsql-hackers@lists.postgresql.org
Date: 2023-05-22T12:34:31Z
Lists: pgsql-hackers 
On 18.05.23 00:59, Jeff Davis wrote:
> On Tue, 2023-05-16 at 20:23 -0700, Jeff Davis wrote:
>> Other than that, and I took your suggestions almost verbatim. Patch
>> attached. Thank you!
> 
> Attached new patch with a typo fix and a few other edits. I plan to
> commit soon.

Some small follow-up on this patch:

Please put blank lines between

</sect3>
<sect3 ...>

etc., matching existing style.

We usually don't capitalize the collation parameters like

CREATE COLLATION mycollation1 (PROVIDER = icu, LOCALE = 'ja-JP);

elsewhere in the documentation.

Table 24.2. ICU Collation Settings should probably be sorted by key, or 
at least by something.

All tables should referenced in the text, like "Table x.y shows this and 
that."  (Note that a table could float to a different page in some 
output formats, so just putting it into a section without some 
introductory text isn't sound.)

Table 24.1. ICU Collation Levels shows punctuation as level 4, which is 
only true in shifted mode, which isn't the default.  The whole business 
of treating variable collation elements is getting a bit lost in this 
description.  The kv option is described as "Classes of characters 
ignored during comparison at level 3.", which is effectively true but 
not the whole picture.

Commits

Same data as JSON: GET /api/v1/messages/:b64id/commits the thread's linked commits as JSON, with link sources. API reference →

  1. Introduce "builtin" collation provider.

  2. ICU: do not convert locale 'C' to 'en-US-u-va-posix'.

  3. initdb: change default --locale-provider back to libc.

  4. CREATE DATABASE: make LOCALE apply to all collation providers.

  5. Remove read-only server settings lc_collate and lc_ctype

  6. ICU: use uloc_getDefault() for initdb.

  7. Doc fixes for commit 1e16af8ab5.

  8. Doc: fix some rendering problems in the PDF docs build.

  9. Doc improvements for language tags and custom ICU collations.

  10. ICU: check for U_STRING_NOT_TERMINATED_WARNING.

  11. Reduce icu_validation_level default to WARNING.

  12. Revert "ICU: do not convert locale 'C' to 'en-US-u-va-posix'."

  13. Fix initdb --no-locale.

  14. Avoid character classification in regex escape parsing.