sort order

Hi,

context:
one postgres 12 on centos 7
one postgres 12 on windows 10
both on machines with french as default
the centos 7 lc_collate and lc_ctype: fr_FR.UTF_8
the w10 lc_collate and lc_ctype: French_France.1252

create table test (ble text, id serial primary key);
insert into test(ble) values(' ');
insert into test(ble) values('Marc');
insert into test(ble) values(' Marc');
insert into test(ble) values('marc');
insert into test(ble) values(' marc');
insert into test(ble) values('bobo');
insert into test(ble) values(' bobo'):
insert into test(ble) values('élise');

differences include a french é character, and some white spaces at the
beginning.

then select * from test order by ble;

centos result:
ble | id
-------+----
| 3
bobo | 2
bobo | 1
élise | 6
marc | 5
marc | 4
Marc | 8
Marc | 7
(8 lignes)

w10 result:
ble | id
-------+----
| 3
bobo | 1
marc | 4
Marc | 7
élise | 8
bobo | 2
marc | 5
Marc | 6
(8 lignes)

so, obviously, both lc_collate knows about the é
but obviously, too, they do behave differently on the impact of the
beginning white space.

I didn't see anything about this behaviour on the doc, unless the reference
at the libc should be understood as please read and test libc doc on each
platform.
So my first question is: why ?
My second question is: how to make the centos postgres behave like the w10
one ??
ie. knowing about french characters AND taking beginning white spaces into
account ?

thanks,

regards,

Marc MILLAS
Senior Architect
+33607850334
www.mokadb.com