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
Also re-word some error messages:
- "Key does not exist: %s"
- "Invalid channel: %<PRIu64>"
- "Request array size must be 4 (request) or 3 (notification)"
- "String cannot contain newlines"
References #6150
During testing found the following bugs:
1. msgpack-gen.lua script is completely unprepared for Float values either in
return type or in arguments. Specifically:
1. At the time of writing relevant code FLOAT_OBJ did not exist as well as
FLOATING_OBJ, but it would be used by msgpack-gen.lua should return type
be Float. I added FLOATING_OBJ macros later because did not know that
msgpack-gen.lua uses these _OBJ macros, otherwise it would be FLOAT_OBJ.
2. msgpack-gen.lua should use .data.floating in place of .data.float. But it
did not expect that .data subattribute may have name different from
lowercased type name.
2. vim_replace_termcodes returned its argument as-is if it receives an empty
string (as well as _vim_id*() functions did). But if something in returned
argument lives in an allocated memory such action will cause double free:
once when freeing arguments, then when freeing return value. It did not cause
problems yet because msgpack bindings return empty string as {NULL, 0} and
nothing was actually allocated.
3. New code in msgpack-gen.lua popped arguments in reversed order, making lua
bindings’ signatures be different from API ones.
Reasonings:
1. It is not used for anything, but scope dictionaries currenly. So there is no
need to generalize and split it into dict_set_var (which will contain some
scope-dictionary-specific checks) and dict_set_value (which will work for any
dictionary).
2. Check for key size is no longer valid for non-scope dictionaries: you *can*
use empty keys there. In scope dictionaries also, but you actually are not
supposed to store there anything, but variables.
Note that actually one may still do
let b:[''] = 1
and “bypass” check for variable name. It won’t change what `echo b:` will show,
but it may affect code which iterates over scope dictionary keys and sets them
to something (if there is such code).
Problem: Using submatch() in a lambda passed to substitute() is verbose.
Solution: Use a static list and pass it as an optional argument to the
function. Fix memory leak.
df48fb456f
Closes#731
References #851
Note: This does not remove some intentional legacy usages of strncpy.
- memcpy isn't equivalent because it doesn't check the string
length of `src`, and doesn't zero-out the remainder of `dst`.
- xstrlcpy isn't equivalent because it doesn't zero-out the
remainder of `dst`. Some Vim logic depends on that (e.g.
ex_append which calls vim_strnsave).
Helped-by: Douglas Schneider <ds3@ualberta.ca>
Helped-by: oni-link <knil.ino@gmail.com>
Helped-by: James McCoy <jamessan@jamessan.com>
vim-patch:7.4.1758
Problem: Triggering CursorHoldI when in CTRL-X mode causes problems.
Solution: Do not trigger CursorHoldI in CTRL-X mode. Add "!" flag to
feedkeys() (test with that didn't work though).
245c41070c
vim-patch:7.4.1759
Problem: When using feedkeys() in a timer the inserted characters are not
used right away.
Solution: Break the wait loop when characters have been added to typebuf.
use this for testing CursorHoldI.
40b1b5443c
vim-patch:7.4.1692
Problem: feedkeys('i', 'x') gets stuck, waits for a character to be typed.
Solution: Behave like ":normal". (Yasuhiro Matsumoto)
move `call_shell` to misc1.c
Move some fns to state.c
Move some fns to option.c
Move some fns to memline.c
Move `vim_chdir*` fns to file_search.c
Move some fns to new module, bytes.c
Move some fns to fileio.c
Problem: Using feedkeys() with an empty string disregards 'x' option.
Solution: Make 'x' work with an empty string. (Thinca)
When integrating the patch to nvim, used same logic but different code
based on nvim codebase. New test passed.
74c5bbf134
