In modules we fill a set of function pointers defined in redismodule.h,
populating a set of APIs that are callable from the module. We use this
manual process instead of resorting to dynamic linking so that we have
exact control on how we pass the API to the module, and we can even pass
different functions for the same name, depending on the API version
declared by the module.
However if the function pointers in redismodule.h and the functions
defined in module.c have the same name, they conflict since the core
exports the symbols to the module.
There is probably some compiler flags trick to avoid this, but in order
to be safer in the future and be more easily compatible with different
builidng systems, this commit changes the internal function prefix from
RedisModule_ to RM_, so for example:
RM_StringSet() will be exported as RedisModule_StringSet()
Use the COMMAND output to fill with partial information the built-in
help. This makes redis-cli able to at least complete commands that are
exported by the Redis server it is connected to, but were not available
in the help.h file when the redis-cli binary was compiled.
Fix a possible race condition of sdown event detection if sentinel's connection to master/slave/sentinel became disconnected just after the last PONG and before the next PING.
This fixes a bug introduced by d827dbf, and makes the code consistent
with the logic of always allowing, while the cluster is down, commands
that don't target any key.
As a side effect the code is also simpler now.
Sometimes Redis patch releases are released in a matter of weeks or days
one after the other. In order to have less release friction the idea is
to stop writing changelogs by hand, in order to also cover everything
interesting there is to say. Useless things can be deleted manually by
the changelog. Also this gives more credits to contributors since often
in the commit message involved people are cited even when they are not
the authors of the commit.
