Add flag whether prompt-style diagnostics should be suppressed.
Add flag whether prompt-style diagnostics should be suppressed.

karies/cling,root-mirror/cling,marsupial/cling,root-mirror/cling,karies/cling,perovic/cling,perovic/cling,karies/cling,perovic/cling,perovic/cling,perovic/cling,root-mirror/cling,marsupial/cling,marsupial/cling,karies/cling,marsupial/cling,marsupial/cling,karies/cling,root-mirror/cling,marsupial/cling,karies/cling,root-mirror/cling,root-mirror/cling