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Set psql client encoding from locale by default

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Add a new libpq connection option client_encoding (which includes the
existing PGCLIENTENCODING environment variable), which besides an
encoding name accepts a special value "auto" that tries to determine
the encoding from the locale in the client's environment, using the
mechanisms that have been in use in initdb.

psql sets this new connection option to "auto" when running from a
terminal and not overridden by setting PGCLIENTENCODING.

original code by Heikki Linnakangas, with subsequent contributions by
Jaime Casanova, Peter Eisentraut, Stephen Frost, Ibrar Ahmed
This commit is contained in:
Peter Eisentraut
2011-02-19 08:54:58 +02:00
parent 327e025071
commit 02e14562a8
10 changed files with 136 additions and 24 deletions
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11
doc/src/sgml/ref/psql-ref.sgml
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@@ -593,6 +593,17 @@ $ <userinput>psql "service=myservice sslmode=require"</userinput>
privileges, server is not running on the targeted host, etc.),
<application>psql</application> will return an error and terminate.
</para>
<para>
If at least one of standard input or standard output are a
terminal, then <application>psql</application> sets the client
encoding to <quote>auto</quote>, which will detect the
appropriate client encoding from the locale settings
(<envar>LC_CTYPE</envar> environment variable on Unix systems).
If this doesn't work out as expected, the client encoding can be
overridden using the environment
variable <envar>PGCLIENTENCODING</envar>.
</para>
</refsect2>
<refsect2 id="R2-APP-PSQL-4">