In order to see also the "hidden" USE-variables in portage (and hopefully ufed), I have USE_EXPAND_HIDDEN="-*" in my /etc/portage/make.conf. This causes a perl warning, and then all variables with "_" fail to be shown in ufed. My analysis of the problem is that _merge_env treats -* in incremental variables differently than portage: It generates a new key "*" with value "" (=false). However, _remove_expands ignores the value and, moreover, the key "*" is not handled correctly in the regular expression (causing the above mentioned perl warning). Hence, in effect, by accident despite the warning, all USE-flags (only those with "_" are tested) match the regular expression ^* and thus are filtered since the value "" is ignored.
This should be fixed by my latest commit. Please test ufed-9999 to see if this fixes the issue on your system, too, please.
Thanks. Works like a charm, as far as I can test (of course, I cannot test whether the move to USE_EXPAND works as intended, since currently USE_EXPAND does not [yet] show up in ufed, as expected). I guess this bug can be closed once the new version is in the tree.
That's fine, cool! In fact all that I have changed is, that the content of USE_EXPAND_HIDDEN is added to USE_EXPAND if the first is set to "-*" in make.conf. The latter is then filtered out at the moment. But adding support to actually see and edit expansion vars in ufed is on my todo list on the way to ufed's 1.0 release.
Released in app-portage/ufed-0.90_rc2
