It seems that the behaviour of the start parameter being missing is
server (or perhaps a specific client) dependent. The specification
clearely says that it should be inserted at the column of the original
request, but the servers clearly expect either for that column to be the
beginning of an identifier or for the client to ignore the spec and
request from that position anyway.
Reading the VSCode code, we see that the 'word' before the cursor is
guessed, and if only if BOTH 'start' AND 'length' are supplied, then
they are used to determine where insertion starts, otherwise the current
'word' is used. Unclear what 'word' means in the specific contexts, but
we're relying on iskeyword.
Add omnifunc for prompt buffers
This synchronous completion can be used with any completion system
including built-in CTRL-X CTRL-O.
The filetype of the prompt buffers is set to VimspectorPrompt so that it
can be identified by completion systems. For example, this works well
with YCM:
let g:ycm_semantic_triggers = {
\ 'VimspectorPrompt': [ '.', '->', ':', '<' ]
\ }
Too many plugins use the default priority of 10 so they race/chase.
Allow uses to configure the priorities and make sure that the defaults
are documented.
Neovim does not raise:
* KeyError when accessing a vim dict
* KeyboardInterrupt when ctrl-c at a prompt
Instead it raises some internal subclass of vim.errro which cannot
easily be identified, so we just catch any vim.error.
Initially I considered using #i, #s, etc. to coerce to specific types,
but then it wasn't clear of the semantics (particularly for bool, where
JSON bool true/false, Python bool True/False).
But it turns out that we can just coerce any key from a JSON string.
Users can _probably_ type JSON strings for most things, or use variables
to run scripts to generate them, this allows essentially complete
flexibility to define the data types needed to populate the launch spec.
The purpose of this is to allow some level of automated setup by
requesting data from the user and then (subsequently) saving the
flattneed config to the vimspector config file.
