Thank you for the \! hint, Pavel, didn't know about that! Is it possible to have a pure SQL solution? (To avoid having to install "sed" on my Win 10 PC)
Maybe by using EXECUTE?
EXECUTE REGEXP_REPLACE(
$localize$
CREATE OR REPLACE FUNCTION my_func()
RETURNS text AS
$func$
SELECT '$(placeholder)';
$func$ LANGUAGE sql IMMUTABLE;
$localize$, '\$\(\w+\)', 'English word', 'g');
Unfortunately, I get the error:
ERROR: prepared statement "regexp_replace" does not exist
