Now, works like a charm.

This is not related to the original issue, but you probably could add 
a sanity check on dates, ie date_start <= date_end

Thanks.

Changes have been made in Git for this ticket:

There is not charset parameter for script backends (Bug #9156).

  3 files changed, 15 insertions(+), 16 deletions(-)
http://git.horde.org/horde-git/-/commit/ef4abb06f887529e0bc387d8f125c6d42950bf66

charset is not set. appart from that, it looks good.
I'm gonna wait for your fix to try more complex (accents and euro 
sign) messages.

2011-04-04T15:17:52+02:00 NOTICE: HORDE [ingo] PHP ERROR: Undefined 
index: charset [pid 29585 on line 155 of 
"/var/www/html/hordetest/ingo/lib/Script/Maildrop/Recipe.php"]
2011-04-04T15:17:52+02:00 DEBUG: 1. Ingo::updateScript() 
/var/www/html/hordetest/ingo/vacation.php:89
2. Ingo_Script_Maildrop->generate() 
/var/www/html/hordetest/ingo/lib/Ingo.php:257
3. Ingo_Script_Maildrop->generateVacation() 
/var/www/html/hordetest/ingo/lib/Script/Maildrop.php:158
4. Ingo_Script_Maildrop_Recipe->__construct() 
/var/www/html/hordetest/ingo/lib/Script/Maildrop.php:282
5. Horde::errorHandler() 
/var/www/html/hordetest/ingo/lib/Script/Maildrop/Recipe.php:155

2011-04-04T15:17:52+02:00 NOTICE: HORDE [ingo] PHP ERROR: Undefined 
index: charset [pid 29585 on line 157 of 
"/var/www/html/hordetest/ingo/lib/Script/Maildrop/Recipe.php"]
2011-04-04T15:17:52+02:00 DEBUG: 1. Ingo::updateScript() 
/var/www/html/hordetest/ingo/vacation.php:89
2. Ingo_Script_Maildrop->generate() 
/var/www/html/hordetest/ingo/lib/Ingo.php:257
3. Ingo_Script_Maildrop->generateVacation() 
/var/www/html/hordetest/ingo/lib/Script/Maildrop.php:158
4. Ingo_Script_Maildrop_Recipe->__construct() 
/var/www/html/hordetest/ingo/lib/Script/Maildrop.php:282
5. Horde::errorHandler() 
/var/www/html/hordetest/ingo/lib/Script/Maildrop/Recipe.php:157

Try that?

Changes have been made in Git for this ticket:

Correctly escape vacation subjects with quote characters in Maildrop 
driver (Bug #9156).

  3 files changed, 12 insertions(+), 5 deletions(-)
http://git.horde.org/horde-git/-/commit/6c9a79ddb04f7ccf15e0db78bbca4d08bc5242eb

procmail needs (or may need) 2 files as well. And I think that 
procmail driver doesn't work either since ingo Vfs driver calls 
VFS::singleton.

I nearly find a way to fix maildrop (and may be procmail) drivers, see 
attach patch file.

The main problem I guess is that I couldn't find a way to create a 
Horde_Vfs object, since parameters are not stored like in other apps : 
in ingo, settings are set in backend file and in other apps, settings 
are set in app main config file.

So I modified function Horde/Core/Factory/Vfs.php:getVfs to get an 
extra parameter (see patch file).

The only *problem* is that I don't know how to get yet the actual 
reason inside function ingo/lib/Driver/Vfs.php:setScriptActive

Are you Ok with this approach ?

Ah, understood. And no, they don't work both the same way, that's the 
problem. Maildrop requires to upload 2 files through VFS which is not 
supported by the current infrastructure in Ingo. Thus there is some 
direct VFS access hacked into the maildop script classes, where they 
don't belong at all.

What I meant was : can I rely on procmail source code to fix maildrop 
VFS's problems ?
Both, procmail and maildrop, work the same way. It is just the file 
format that differs (I guess).

That wouldn't fix the maildrop driver though. And both drivers might 
need different escaping techniques.

Is the procmail driver working ? Is so, I can try to provide a patch 
based on the procmail driver.

I get those errors as well.
I'll have a look.

I can't test this patch, because the maildrop driver is completely 
broken at the moment. A few class name fixes were easy to fix, but the 
driver has to be refactored to not implicitely rely on a VFS driver, 
and to not access protected properties and methods.

If Subject of vacation contains a single quote (which appends all the 
time in French, eg : Message d'absence. ), delivery of the vacation 
message fails.

see attached patch.