Re: [exim] how to make use of custom variables in a router

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Author: Jeremy Harris
To: exim-users
Subject: Re: [exim] how to make use of custom variables in a router
On 28/05/2020 11:54, Jürgen Edner via Exim-users wrote:
>   set = r_dir = ${extract{folder}{${lookup{$local_part}
>                   lsearch{/etc/pubfolders}}}{$value}}
>   condition = ${if exists{/home/imappublic/.$r_dir/cur}}
>   condition = ${if exists{/home/imappublic/.$r_dir/new}}
>   ...

> I'm not sure if I'm using the correct set-syntax. I've read the
> documentation and searched the internet but couldn't find an
> example which shows the correct command usage. It would be nice
> if someone can shed some light on the syntax and maybe can
> provide and example.

An example of use in the Exim testsuite:

  driver =      redirect
  debug_print = DEBUG: $r_r1 $r_r2
  data =        b
                # r_r1 checks that a variable with tainted data is ok
                #       that the default list-sep ":" is not used for
this list
                #       that an '=' on the RHS is ok
  set =         r_r1 = <$local_part> aaa:bbb bar=baz
                # r_local checks that a variable is immediately usable
  set =         r_local = check
  errors_to =   bad_$r_local

  driver =      accept
  debug_print = DEBUG: $r_r1 $r_r2
                # r_r1 vs. r_r2 checks we can have multiple "set" options
  set =         r_r1 = $local_part
  set =         r_r2 = $local_part \
                        2a00:1940:100::ff:0:1 \
                        foo=bar \
                        # check we can get a newline into content
                        newline=initial\n\tcont \
                        # check we can get a list-sep into content (by
                        semicolon=initial;;cont \
                ; \
                # r_r3 checks we can have a list as arg for a "set" option
                r_r3 = bletch
  transport =   local_delivery