Previously, we'd generally attempt the operation first, without any passwords, and only query for a password if that operation then fails and asks for one. This is done to improve compatibility with password-less authentication schemes, such as security tokens and similar. This patch modifies this slightly: if a password can be acquired cheaply via the keyring password cache, the $CREDENTIALS_PATH credential store, or the $PASSWORD/$PIN environment variables, acquire it *before* issuing the first requested. This should save us a pointless roundtrip, and should never hurt.
System and Service Manager
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