clean up RPL_CHANNELMODEIS logic #2163
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Don't send RPL_CHANNELMODEIS for no-op changes to modes that take arguments (channel-user modes like +o, key, etc.)
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I'm going to go ahead and merge this, but feel free to post comments later. |
This affects some cases like `MODE #chan Ii` as an unprivileged user; the +I invite-exception list cannot be listed without privileges, but +i can.
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cc @DanielOaks and @progval for thoughts. The last time we revisited this was probably #649. This change has the following effects:
RPL_CHANNELMODEISandRPL_CREATIONTIMEforMODE #chan(standard behavior)MODE #chan i(most ircds translate this into +i, but it shouldn't matter)MODE #chan +iwhen it is a no-op because+iwas already enabled (most ircds will send nothing)MODE #chan +o nickwhen it fails or is a no-opMODE #chan b(standard behavior, fixed in Ergo by 324 RPL_CHANNELMODEIS sent after listing bans #649)+kand similar modes that take an argument is not changed (the operation is always broadcasted even when it is a no-op)