feat(docs): replace lua2dox.lua

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).

1 files changed, 2 insertions, 2 deletions

diff --git a/runtime/lua/vim/_inspector.lua b/runtime/lua/vim/_inspector.lua
index 3f7b9d2c23..9a073c32c4 100644
--- a/runtime/lua/vim/_inspector.lua
+++ b/runtime/lua/vim/_inspector.lua
@@ -17,7 +17,7 @@ local defaults = {
 ---@param bufnr? integer defaults to the current buffer
 ---@param row? integer row to inspect, 0-based. Defaults to the row of the current cursor
 ---@param col? integer col to inspect, 0-based. Defaults to the col of the current cursor
----@param filter? InspectorFilter (table|nil) a table with key-value pairs to filter the items
+---@param filter? InspectorFilter (table) a table with key-value pairs to filter the items
 ---               - syntax (boolean): include syntax based highlight groups (defaults to true)
 ---               - treesitter (boolean): include treesitter based highlight groups (defaults to true)
 ---               - extmarks (boolean|"all"): include extmarks. When `all`, then extmarks without a `hl_group` will also be included (defaults to true)
@@ -139,7 +139,7 @@ end
 ---@param bufnr? integer defaults to the current buffer
 ---@param row? integer row to inspect, 0-based. Defaults to the row of the current cursor
 ---@param col? integer col to inspect, 0-based. Defaults to the col of the current cursor
----@param filter? InspectorFilter (table|nil) see |vim.inspect_pos()|
+---@param filter? InspectorFilter (table) see |vim.inspect_pos()|
 function vim.show_pos(bufnr, row, col, filter)
   local items = vim.inspect_pos(bufnr, row, col, filter)