* deprecate old signatures
* move to new str_byteindex/str_utfindex signature
* use single-underscore name (double-underscore is reserved for Lua itself)
Problem: on `CompleteDone` cursor can jump to the end of line instead of
the end of the completed word.
Solution: remove only inserted word for snippet expansion instead of everything
until eol.
Fixes#30656
Co-authored-by: Mathias Fussenegger <f.mathias@zignar.net>
Co-authored-by: Justin M. Keyes <justinkz@gmail.com>
Problem: Currently completion attribute hl_group is combined with
all items, which is redundant and confusing with kind_hlgroup
Solution: Renamed to abbr_hlgroup and combine it only with the abbr item
(glepnir).
closes: vim/vim#158180fe17f8ffb
Co-authored-by: glepnir <glephunter@gmail.com>
Problem: prefix can be a symbol like period, the fuzzy matching can't
handle it correctly.
Solution: when prefix is empty or a symbol add all lsp completion
result into matches.
Problem: Some items of completion results include function signatures that can
cause the pum to be very long when a function has many params, because pum
scales with the longest word/abbr.
Solution: add custom covert function that can customise abbr to remove params.
Problem: the autotrigger mechanism could fire completion requests despite
completion already being active from another completion mechanism or manual
trigger
Solution: add a condition to avoid an additional request.
Problem: CompletionItem in lsp spec mentioned the deprecated attribute
Solution: when item has deprecated attribute set hl_group to DiagnosticDeprecated
in complete function
Although the built-in pum completion mechanism will filter anyway on the
next input it is odd if the initial popup shows entries which don't
match the current prefix.
Using fuzzy match on the label/prefix is compatible with
`completeopt+=fuzzy` and also doesn't seem to break postfix snippet
cases
Closes https://github.com/neovim/neovim/issues/29287
Problem:
For snippets lsp.completion prefers the label if it is shorter than the
insertText or textEdit to support postfix completion cases but clangd
adds decoration characters to labels. E.g.: `•INT16_C(c)`
Solution:
Use parse_snippet on insertText/textEdit before checking if it is
shorter than the label.
Fixes https://github.com/neovim/neovim/issues/29301
Problem: Completion side effects not working randomly.
Solution: When creating the table of LSP responses, the table index
was used, but this is not the same as the actual client_id, so it was changed
to use the client_id directly.
The `complete()` mechanism matches completion candidates against
the typed text, so strict pre-filtering isn't necessary.
This is a first step towards supporting postfix snippets (like
`items@insert` in luals)
