Justin M. Keyes 3ea1007753 api: nvim_get_mode() ...

Asynchronous API functions are served immediately, which means pending
input could change the state of Nvim shortly after an async API function
result is returned.

nvim_get_mode() is different:
  - If RPCs are known to be blocked, it responds immediately (without
    flushing the input/event queue)
  - else it is handled just-in-time before waiting for input, after
    pending input was processed. This makes the result more reliable
    (but not perfect).

Internally this is handled as a special case, but _semantically_ nothing
has changed: API users never know when input flushes, so this internal
special-case doesn't violate that. As far as API users are concerned,
nvim_get_mode() is just another asynchronous API function.

In all cases nvim_get_mode() never blocks for more than the time it
takes to flush the input/event queue (~µs).

Note: This doesn't address #6166; nvim_get_mode() will provoke #6166 if
e.g. `d` is operator-pending.

Closes #6159

2017-04-28 19:14:34 +02:00

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api.txt

doc: api-contract, CONTRIBUTING.md

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arabic.txt

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debug.txt

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deprecated.txt

Merge #6344 'vim-patch:7.4.2236,7.4.2306'

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develop.txt

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diff.txt

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Makefile

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maketags.awk

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map.txt

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mbyte.txt

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message.txt

api: nvim_get_mode()

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motion.txt

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msgpack_rpc.txt

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nvim.txt

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options.txt

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pi_health.txt

CheckHealth

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pi_matchit.txt

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syntax.txt

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