Closes https://github.com/neovim/neovim/issues/28484.
Closes https://github.com/neovim/neovim/issues/28719.
Co-authored-by: Chris <crwebb85@gmail.com>
Co-authored-by: Gregory Anders <greg@gpanders.com>
Co-authored-by: Jake B <16889000+jakethedev@users.noreply.github.com>
Co-authored-by: Jonathan Raines <jonathan.s.raines@gmail.com>
Co-authored-by: Yi Ming <ofseed@foxmail.com>
Co-authored-by: Zane Dufour <zane@znd4.me>
Co-authored-by: zeertzjq <zeertzjq@outlook.com>
reverts e0d92b9cc2#28502
Problem:
`vim.ui.open()` has a `pcall()` like signature, under the assumption
that this is the Lua idiom for returning result-or-error. However, the
`result|nil, errmsg|nil` pattern:
- has precedent in:
- `io.open`
- `vim.uv` (`:help luv-error-handling`)
- has these advantages:
- Can be used with `assert()`:
```
local result, err = assert(foobar())
```
- Allows LuaLS to infer the type of `result`:
```
local result, err = foobar()
if err then
...
elseif result then
...
end
```
Solution:
- Revert to the `result|nil, errmsg|nil` pattern.
- Document the pattern in our guidelines.
Problem:
vim.iter has both `rfind()` and various `*back()` methods, which work
in "reverse" or "backwards" order. It's inconsistent to have both kinds
of names, and "back" is fairly uncommon (rust) compared to python
(rfind, rstrip, rsplit, …).
Solution:
- Remove `nthback()` and let `nth()` take a negative index.
- Because `rnth()` looks pretty obscure, and because it's intuitive
for a function named `nth()` to take negative indexes.
- Rename `xxback()` methods to `rxx()`.
- This informally groups the "list-iterator" functions under a common
`r` prefix, which helps discoverability.
- Rename `peekback()` to `pop()`, in duality with the existing `peek`.
Problem:
`vim.ui.open` unnecessarily invents a different success/failure
convention. Its return type was changed in 57adf8c6e0, so we might as
well change it to have a more conventional form.
Solution:
Change the signature to use the `pcall` convention of `status, result`.
vim.fs.root() is a function for finding a project root relative to a
buffer using one or more "root markers". This is useful for LSP and
could be useful for other "projects" designs, as well as for any plugins
which work with a "projects" concept.
Problem:
Besides being redundant with vim.iter():flatten(), `tbl_flatten` has
these problems:
- Has `tbl_` prefix but only accepts lists.
- Discards some results! Compare the following:
- iter.flatten():
```
vim.iter({1, { { a = 2 } }, { 3 } }):flatten():totable()
```
- tbl_flatten:
```
vim.tbl_flatten({1, { { a = 2 } }, { 3 } })
```
Solution:
Deprecate tbl_flatten.
Note:
iter:flatten() currently fails ("flatten() requires a list-like table")
on this code from gen_lsp.lua:
local anonym = vim.iter({ -- remove nil
anonymous_num > 1 and '' or nil,
'---@class ' .. anonymous_classname,
}):flatten():totable()
Should we enhance :flatten() to work for arrays?
Problem:
The use-case for the convenience functions vim.iter.map(),
vim.iter.filter(), vim.iter.totable() is not clear.
Solution:
Drop them for now. We can revisit after 0.10 release.
Problem:
The order of the validation performed by vim.validate() is
unpredictable.
- harder to write reliable tests.
- confusing UX because validation result might return different errors randomly.
Solution:
Iterate the input using `vim.spairs()`.
Future:
Ideally, the caller could provide an "ordered dict".
Problem:
vim.ui.open "locks up" Nvim if the spawned process does not terminate. #27986
Solution:
- Change `vim.ui.open()`:
- Do not call `wait()`.
- Return a `SystemObj`. The caller can decide if it wants to `wait()`.
- Change `gx` to `wait()` only a short time.
- Allows `gx` to show a message if the command fails, without the
risk of waiting forever.
Backslashes are valid characters in unix style paths.
Fix the conversion of backslashes to forward slashes in several `vim.fs`
functions when not on Windows. On Windows, backslashes will still be converted
to forward slashes.
- Add :h fswatch-limitations that notifies user about default inotify
limitations on linux and how to adjust them
- Check for Event queue overflow message from fswatch and refer user to
new documentation
Signed-off-by: Tomas Slusny <slusnucky@gmail.com>
- Added `@inlinedoc` so single use Lua types can be inlined into the
functions docs. E.g.
```lua
--- @class myopts
--- @inlinedoc
---
--- Documentation for some field
--- @field somefield integer
--- @param opts myOpts
function foo(opts)
end
```
Will be rendered as
```
foo(opts)
Parameters:
- {opts} (table) Object with the fields:
- somefield (integer) Documentation
for some field
```
- Marked many classes with with `@nodoc` or `(private)`.
We can eventually introduce these when we want to.
Problem:
The documentation flow (`gen_vimdoc.py`) has several issues:
- it's not very versatile
- depends on doxygen
- doesn't work well with Lua code as it requires an awkward filter script to convert it into pseudo-C.
- The intermediate XML files and filters makes it too much like a rube goldberg machine.
Solution:
Re-implement the flow using Lua, LPEG and treesitter.
- `gen_vimdoc.py` is now replaced with `gen_vimdoc.lua` and replicates a portion of the logic.
- `lua2dox.lua` is gone!
- No more XML files.
- Doxygen is now longer used and instead we now use:
- LPEG for comment parsing (see `scripts/luacats_grammar.lua` and `scripts/cdoc_grammar.lua`).
- LPEG for C parsing (see `scripts/cdoc_parser.lua`)
- Lua patterns for Lua parsing (see `scripts/luacats_parser.lua`).
- Treesitter for Markdown parsing (see `scripts/text_utils.lua`).
- The generated `runtime/doc/*.mpack` files have been removed.
- `scripts/gen_eval_files.lua` now instead uses `scripts/cdoc_parser.lua` directly.
- Text wrapping is implemented in `scripts/text_utils.lua` and appears to produce more consistent results (the main contributer to the diff of this change).
- Problem: One cannot easily write something like, for example:
`version_current >= {0, 10, 0}`; writing like
`not vim.version.lt(version_current, {0, 10, 0})` is verbose.
- Solution: add {`le`,`ge`} in addition to {`lt`,`gt`}.
- Also improve typing on the operator methods: allow `string` as well.
- Update the example in `vim.version.range()` docs: `ge` in place of
`gt` better matches the semantics of `range:has`.
- Add section `VIM.LPEG` and `VIM.RE` to docs/lua.txt.
- Add `_meta/re.lua` which adds luadoc and type annotations, for the
vendored `vim.re` package.
- Fix minor style issues on `_meta/lpeg.lua` luadoc for better vimdocs
generation.
- Fix a bug on `gen_vimdoc` where non-helptags in verbatim code blocks
were parsed as helptags, affecting code examples on `vim.lpeg.Cf`,
etc.
- Also move the `vim.regex` section below so that it can be located
closer to `vim.lpeg` and `vim.re`.
Problem: Some lines in the generated vim doc are overflowing, not
correctly wrapped at 78 characters. This happens when docs body contains
several consecutive 'inline' elements generated by doxygen.
Solution: Take into account the current column offset of the last line,
and prepend some padding before doc_wrap().
Problem:
Currently `deepcopy` hashes every single tables it copies so it can be
reused. For tables of mostly unique items that are non recursive, this
hashing is unnecessarily expensive
Solution:
Port the `noref` argument from Vimscripts `deepcopy()`.
The below benchmark demonstrates the results for two extreme cases of
tables of different sizes. One table that uses the same table lots of
times and one with all unique tables.
| test | `noref=false` (ms) | `noref=true` (ms) |
| -------------------- | ------------------ | ----------------- |
| unique tables (50) | 6.59 | 2.62 |
| shared tables (50) | 3.24 | 6.40 |
| unique tables (2000) | 23381.48 | 2884.53 |
| shared tables (2000) | 3505.54 | 14038.80 |
The results are basically the inverse of each other where `noref` is
much more performance on tables with unique fields, and `not noref` is
more performant on tables that reuse fields.
- Remove the usage of the term "defer" to avoid confusion with
`vim.defer_fn`, which also calls `vim.schedule_wrap` internally.
- Explicitly state that `vim.schedule_wrap` returns a function in the
text.
- Mention that arguments are passed along.
- Include a usage example.
- Rename param to `fn`.
The on_detect functions returned by filetype.lua set buffer local
variables which are often used by filetype plugins. For example, the
on_detect function for shell buffers sets variables such as b:is_bash or
b:is_sh, which are used by the sh ftplugin.
When called after setting the buffer's filetype, these variables cannot
be used by the ftplugin (because they are not yet defined). Instead,
call on_detect before setting the buffer filetype so that any buffer
variables set by on_detect can be used in the ftplugin.
If an iterator pipeline stage returns nil as its first return value, the
other return values are ignored and it is treated as if that stage
returned only nil (the semantics of returning nil are different between
different stages). This is consistent with how for loops work in Lua
more generally, where the for loop breaks when the first return value
from the function iterator is nil (see :h for-in for details).
Problem: luals returns stricter diagnostics with bundled luarc.json
Solution: Improve some function and type annotations:
* use recognized uv.* types
* disable diagnostic for global `vim` in shared.lua
* docs: don't start comment lines with taglink (otherwise LuaLS will interpret it as a type)
* add type alias for lpeg pattern
* fix return annotation for `vim.secure.trust`
* rename local Range object in vim.version (shadows `Range` in vim.treesitter)
* fix some "missing fields" warnings
* add missing required fields for test functions in eval.lua
* rename lsp meta files for consistency
Problem: cache paths are derived by replacing each reserved/filesystem-
path-sensitive char with a `%` char in the original path. With this
method, two different files at two different paths (each containing `%`
chars) can erroneously resolve to the very same cache path in certain
edge-cases.
Solution: derive cache paths by url-encoding the original (path) instead
using `vim.uri_encode()` with `"rfc2396"`. Increment `Loader.VERSION` to
denote this change.
- eval.lua is now the source of truth.
- Formatting is much more consistent.
- Fixed Lua type generation for polymorphic functions (get(), etc).
- Removed "Overview" section from builtin.txt
- Can generate this if we really want it.
- Moved functions from sign.txt and testing.txt into builtin.txt.
- Removed the *timer* *timers* tags since libuv timers via vim.uv should be preferred.
- Removed the temp-file-name tag from tempname()
- Moved lueval() from lua.txt to builtin.txt.
* Fix indent
* fixup!
* fixup! fixup!
* fixup! better tag formatting
* fixup: revert changes no longer needed
* fixup! CI
---------
Co-authored-by: zeertzjq <zeertzjq@outlook.com>
* docs(lua): teach lua2dox how to table
* docs(lua): teach gen_vimdoc.py about local functions
No more need to mark local functions with @private
* docs(lua): mention @nodoc and @meta in dev-lua-doc
* fixup!
Co-authored-by: Justin M. Keyes <justinkz@gmail.com>
---------
Co-authored-by: Justin M. Keyes <justinkz@gmail.com>
Problem:
Lua functions that return multiple results are declared by using
multiple `@return` docstring directives. But the generated docs don't
make it obvious what this represents.
Solution:
- Generate a "Return (multiple)" heading for multiple-value functions.
- Fix `@note` directives randomly placed after `@return`.
