Dear Graeme, dear Andreas,
Thanks for your answers!
${run {'/bin/date' '--date=2013-02-07' \
'+"%A, %-d %B"'}{$value}{$value}}
works. Unfortunately the quoting of each argument is not mentioned in
http://www.exim.org/exim-html-current/doc/html/spec_html/ch-string_expansions.html
And the default configuration file
/etc/exim4/conf.d/acl/30_exim4-config_check_rcpt has no single quotes in
the ${run command.
${run {/bin/date --date=2013-02-07 ${quote:+%A, %-d %B}}}
might work with exim -be, but not when the file is sourced in the
autoreply transport. Is this a bug?
I was not able loose the double quotes in the format string which end up
in the $value, but it is possible to remove them afterwards:
${sg { \
${run {'/bin/date' '--date=2013-02-07' '+"%A, %-d %B"'} \
{$value} \
{$value}}} \
{"\n} \
{}}
(This also removes the trailing newline.)
Stephan