prekey is defined as `<xs:attribute name="prekey" type="xs:boolean"/>`
which allows both `true` and `1` as truthy values.
Not checking for `1` breaks omemo encryption when interacting with
clients which set prekey="1", example: psi+ 1.4.983
Regards https://github.com/profanity-im/profanity/issues/1247
So far `/occupants char *`, `/roster contact char *`, `/roster room char #`,
`/roster header char -`, `/occupants header char -` was saved and
loaded from the preferences.
But was overwritten when the theme was loaded. If the theme didn't set
these values the value was just cleared. Despite that it might have been
set in the users preferences.
Funny enough the themes don't operate generally like this.
For example `otr.char` is not cleared.
This is again due to our borked theme/prefs concept
(https://github.com/profanity-im/profanity/issues/1077).
For now let's just use the one set from the preferences if it's set. The
theme will however overwrite it if it is set there.
Fix https://github.com/profanity-im/profanity/issues/1244
So far we removed the avatar feature only after a succesful retrive in
avatar_request_item_by_id() before we are going to retrieve the actual
image.
We should remove it at every `/avatar barejid` call too so in case one
retrieval was unsucessful that we can call it again.
So far it seems like there is no other way to trigger getting the nodes
except announcing that we support the avatar feature.
So far we printed one after the last received message, which doesn't
make much sense of course.
Now only print one if there is not already one present.
This is because the actual command that parses itself (cmd_logging) returns false if it didn't get the expected parameters.
Handing the printing however is done by another function. This function is added to the Command struct as setting_function.
So if this is set, and the actual command returns false. We should just call the setting_function and not print the error message.
Fix https://github.com/profanity-im/profanity/issues/1237
Instead of adding `profanity_LDADD = -lm` to Makefile.am or using
`AC_CHECK_LIB()` in configurea.c I use `AC_SEARCH_LIBS()` in case the
fmod() function is in the libc.
See https://autotools.io/autoconf/finding.html
