Close the remaining Vim-vs-Neovim functional gaps:
* Text objects — new `autoload/nuwiki/textobjects.vim` mirroring
`lua/nuwiki/textobjects.lua`. All five pairs (ah/ih, aH/iH,
al/il, a\/i\, ac/ic) wired in the Vim path of `ftplugin/vimwiki.vim`
via the classic `:<C-u>call` idiom that works cleanly in both
operator-pending and visual modes.
* Folding — new `autoload/nuwiki/folding.vim` providing a regex
`foldexpr` over headings, plus a tidy `foldtext`. Wired in the
Vim path; opts out via `let g:nuwiki_no_folding = 1`.
* `smart_return` was using `setline()` / `append()` inside an
`<expr>` callback — fine on Neovim but plain Vim's stricter
textlock raised E565. Rewrote as pure keystrokes (matches the
Lua version): table rows insert via `<CR>...<Esc>0li`, empty
list lines break via `<Esc>0DA<CR>`.
* Function-name parity: added
`nuwiki#commands#heading_add_level`,
`nuwiki#commands#heading_remove_level`,
`nuwiki#commands#table_move_column_{left,right}` as thin
aliases over the original short names so the public
`nuwiki#commands#*` surface matches `require('nuwiki.commands').*`.
Test harness:
* `scripts/test-keymaps-vim.vim` extended from 12 to 30 cases:
4 smart_return, 3 smart_tab/<S-Tab>, 3 named-command exists,
4 text-object helpers, 1 `dah` end-to-end, 2 folding, and the
original 12 pure-VimL cases. (Visual-mode mark inspection in
`vim -e -s` stays unreliable, so text objects are exercised
at the helper level plus one operator-pending end-to-end.)
Gates: 456 Rust / 39 Neovim / 30 Vim.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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