Hello!
I have been an owner of IXUS 132 (ELPH 115) just for the capability of running CHDK on it, but I had observed that the firmware is still in ALPHA. Can someone inform me when the Full version firmware will be available.
The alpha / beta labels really don't necessarily mean a port is incomplete. It means that the last developer to work on the port either considered it not completely tested, or knew of incomplete features. The status is only changed when someone with specific knowledge of the port requests that it be changes
P.S. (Important!) - The focus functionality using CHDK, does not work on the IXUS 132 camera. Hopefully you will be able to fix this soon.
According the the code, subject distance override should work when AF Lock is enabled or script set_mf(1) has been called.
You can enable AF lock using either the normal canon UI (usually half press + focus mode button) or using the set_aflock script function.
If SD override does not work with either of these, more investigation will be required. I would not expect SD override in auto focus mode to be fixable, unless the existing defines are due to copy/paste.