chore(release): 0.5.1

A code-review pass over the VimL + Lua client layers (no behaviour change
beyond the noted parity fixes; full editor harness 10/10):

Lua (lua/nuwiki/):
- commands.lua: drop the dead <0.10 make_position_params pcall/no-arg fallback
  (min is 0.11; no-arg form is itself deprecated) and its stale comment.
- commands.lua: simplify the exec() client dispatch — the metatable/rawget
  dance is gone; always use the non-deprecated colon form client:request() on
  0.11+. (This is the block an external review misread as "critical".)
- commands.lua: extract parse_list_marker() + has_auto_indent() shared by
  smart_return/smart_shift_return; extract word_boundaries() shared by
  wrap_cword_as_wikilink/colorize (and unify the equivalent char classes).
- commands.lua: :Nuwiki search now surfaces real lvimgrep errors instead of
  reporting every failure as "no match" (E480 stays a WARN) — parity with the
  VimL twin's `catch /E480/`.
- keymaps.lua: collapse open_below/above_with_bullet into open_with_bullet(cmd)
  (checkbox prefix preserved for `o` only, as before).
- lsp.lua: normalize the wiki root before the buffer-path prefix compare
  (Windows separators); buf path was already normalized.
- ftplugin.lua: drop the always-true has('nvim-0.11') guard and hoist the
  identical foldmethod/foldtext out of both branches.
- install.lua: use a local `uv` instead of mutating the global vim.uv.

VimL (autoload/nuwiki/):
- commands.vim: refresh a stale comment pointing at the old in-repo
  nuwiki-lsp/src/commands.rs path → the nuwiki-rs server generally.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

.gitea/workflows/release.yaml

@@ -0,0 +1,151 @@
+name: Release
+
+# Cut a plugin release from the Actions UI: "Run workflow" → enter the
+# version (e.g. 0.5.1). This repo is the Vim/Neovim plugin only and ships no
+# binary (the nuwiki-ls server lives in nuwiki-rs and is downloaded at install
+# time), so a release is just: stamp g:nuwiki_version, commit, tag vX.Y.Z, and
+# publish a Gitea release entry. No build / cross-compile.
+#
+# Dispatch-only on purpose: the job creates the tag itself, so a push-tag
+# trigger would double-fire.
+on:
+  workflow_dispatch:
+    inputs:
+      version:
+        description: 'Release version, no leading v (e.g. 0.5.1)'
+        required: true
+        type: string
+
+permissions:
+  contents: write
+
+jobs:
+  release:
+    name: tag + release ${{ inputs.version }}
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+          # Push the release commit + tag back with a write-capable token.
+          token: ${{ secrets.RELEASE_TOKEN }}
+
+      - name: Validate version + stamp
+        id: stamp
+        env:
+          VERSION: ${{ inputs.version }}
+        run: |
+          set -euo pipefail
+          ver="${VERSION#v}" # tolerate a leading v
+          if ! printf '%s' "$ver" | grep -Eq '^[0-9]+\.[0-9]+\.[0-9]+([-.][0-9A-Za-z.-]+)?$'; then
+            echo "::error::'$ver' is not a semver version (expected e.g. 0.5.1)"
+            exit 1
+          fi
+          tag="v$ver"
+          if git rev-parse -q --verify "refs/tags/$tag" >/dev/null \
+            || git ls-remote --exit-code --tags origin "$tag" >/dev/null 2>&1; then
+            echo "::error::tag $tag already exists"
+            exit 1
+          fi
+          # g:nuwiki_version in plugin/nuwiki.vim is the plugin's only version
+          # location (surfaced by :NuwikiShowVersion / health).
+          sed -i -E "s/(let g:nuwiki_version = ')[^']*(')/\1$ver\2/" plugin/nuwiki.vim
+          if ! grep -q "let g:nuwiki_version = '$ver'" plugin/nuwiki.vim; then
+            echo "::error::failed to stamp g:nuwiki_version in plugin/nuwiki.vim"
+            exit 1
+          fi
+          echo "version=$ver" >> "$GITHUB_OUTPUT"
+          echo "tag=$tag" >> "$GITHUB_OUTPUT"
+
+      - name: Sanity-check the plugin sources cleanly
+        run: |
+          set -euo pipefail
+          sudo apt-get update -qq
+          sudo apt-get install -y --no-install-recommends vim
+          # plugin/nuwiki.vim must source without error (silent Ex mode exits
+          # non-zero on any error), and expose the stamped version.
+          vim -e -s -u NONE -N \
+            -c 'set runtimepath+=.' \
+            -c 'runtime plugin/nuwiki.vim' \
+            -c "if get(g:, 'nuwiki_version', '') !=# '${{ steps.stamp.outputs.version }}' | cquit 1 | endif" \
+            -c 'qall!'
+
+      - name: Commit, tag, push
+        env:
+          VER: ${{ steps.stamp.outputs.version }}
+          TAG: ${{ steps.stamp.outputs.tag }}
+        run: |
+          set -euo pipefail
+          git config user.name  "gitea-actions"
+          git config user.email "gitea-actions@users.noreply.code.gfran.co"
+          git add plugin/nuwiki.vim
+          git commit -m "chore(release): $VER"
+          git tag -a "$TAG" -m "nuwiki plugin $VER"
+          git push origin "HEAD:${GITHUB_REF_NAME}"
+          git push origin "$TAG"
+
+      - name: Ensure jq + curl
+        run: |
+          command -v jq >/dev/null 2>&1 || { apt-get update && apt-get install -y --no-install-recommends jq; }
+          command -v curl >/dev/null 2>&1 || { apt-get update && apt-get install -y --no-install-recommends curl; }
+
+      - name: Generate release notes
+        id: notes
+        env:
+          TAG: ${{ steps.stamp.outputs.tag }}
+        run: |
+          set -euo pipefail
+          git fetch --tags --force origin >/dev/null 2>&1 || true
+          # Previous tag = newest tag that isn't the one we just cut.
+          prev_tag=$(git tag --sort=-version:refname | grep -vxF "$TAG" | head -n1 || echo "")
+          if [ -n "$prev_tag" ]; then
+            log=$(git log --oneline "$prev_tag..$TAG")
+            compare="${GITHUB_SERVER_URL}/${GITHUB_REPOSITORY}/compare/${prev_tag}...${TAG}"
+          else
+            log=$(git log --oneline "$TAG")
+            compare="${GITHUB_SERVER_URL}/${GITHUB_REPOSITORY}/commits/tag/${TAG}"
+          fi
+          cat > release-notes.md <<EOF
+          Vim/Neovim plugin release. The \`nuwiki-ls\` server binary is downloaded
+          automatically from [nuwiki-rs](${GITHUB_SERVER_URL}/gffranco/nuwiki-rs)
+          at install time — no binary assets are attached here by design.
+
+          **Full Changelog**: ${compare}
+
+          **Changes**:
+          ${log}
+          EOF
+          echo "wrote release notes"
+
+      - name: Create Gitea release
+        env:
+          RELEASE_TOKEN: ${{ secrets.RELEASE_TOKEN }}
+          GITEA_SERVER: ${{ github.server_url }}
+          REPO: ${{ github.repository }}
+          TAG: ${{ steps.stamp.outputs.tag }}
+        run: |
+          set -euo pipefail
+          if [ -z "${RELEASE_TOKEN:-}" ]; then
+            echo "::error::RELEASE_TOKEN secret is not set"
+            exit 1
+          fi
+          # Idempotent: skip if a release for this tag already exists.
+          existing=$(curl --silent -o /dev/null -w "%{http_code}" \
+            -H "Authorization: token $RELEASE_TOKEN" \
+            "$GITEA_SERVER/api/v1/repos/$REPO/releases/tags/$TAG" || true)
+          if [ "$existing" = "200" ]; then
+            echo "release $TAG already exists — nothing to do"
+            exit 0
+          fi
+          notes=$(cat release-notes.md 2>/dev/null || echo "")
+          payload=$(jq -n --arg tag "$TAG" --arg name "$TAG" --arg body "$notes" \
+            '{tag_name: $tag, name: $name, body: $body, draft: false, prerelease: false}')
+          code=$(curl --silent -o /tmp/rel.json -w "%{http_code}" \
+            -H "Authorization: token $RELEASE_TOKEN" \
+            -H "Content-Type: application/json" \
+            -d "$payload" \
+            "$GITEA_SERVER/api/v1/repos/$REPO/releases")
+          if [ "$code" != "201" ]; then
+            echo "::error::failed to create release (HTTP $code)"; cat /tmp/rel.json; exit 1
+          fi
+          echo "created release $TAG"

autoload/nuwiki/commands.vim

@@ -468,15 +468,7 @@ endfunction
 " ===== Heading navigation (pure VimL) =====
 
 function! s:heading_level(line) abort
-  let l:lead = matchstr(a:line, '^\s*\zs=\+\ze\s')
-  if l:lead ==# ''
-    return 0
-  endif
-  let l:trail = matchstr(a:line, '\s\zs=\+\ze\s*$')
-  if len(l:trail) != len(l:lead)
-    return 0
-  endif
-  return len(l:lead)
+  return nuwiki#util#heading_level(a:line)
 endfunction
 
 function! s:current_heading_level() abort
@@ -593,21 +585,7 @@ endfunction
 " upstream g:vimwiki_list both work — and falls back to the scalar g:nuwiki_*
 " vars (single-wiki shorthand) and finally built-in defaults.
 function! s:wiki_cfg(n) abort
-  let l:wikis = nuwiki#config#wikis()
-  let l:w = (a:n >= 0 && a:n < len(l:wikis)) ? l:wikis[a:n] : {}
-  let l:root  = expand(get(l:w, 'root',
-        \ get(g:, 'nuwiki_wiki_root', '~/vimwiki')))
-  let l:ext   = get(l:w, 'file_extension',
-        \ get(g:, 'nuwiki_file_extension', '.wiki'))
-  if l:ext[0] !=# '.' | let l:ext = '.' . l:ext | endif
-  let l:idx       = get(l:w, 'index', 'index')
-  let l:diary_rel = get(l:w, 'diary_rel_path',
-        \ get(g:, 'nuwiki_diary_rel_path', 'diary'))
-  let l:diary_idx = get(l:w, 'diary_index', 'diary')
-  let l:space = get(l:w, 'links_space_char',
-        \ get(g:, 'nuwiki_links_space_char', ' '))
-  return { 'root': l:root, 'ext': l:ext, 'idx': l:idx,
-        \  'diary_rel': l:diary_rel, 'diary_idx': l:diary_idx, 'space': l:space }
+  return nuwiki#util#wiki_cfg(a:n)
 endfunction
 
 " Build the list of configured wikis as {name, root, ext, idx, diary_rel,
@@ -1175,10 +1153,10 @@ endfunction
 " Mirrors `lua/nuwiki/commands.lua`'s `align_table_at` so plain Vim
 " buffers get the same "tighten columns as cells grow" behaviour the
 " Neovim path enjoys, without needing a vim-lsp roundtrip. Algorithm
-" matches `nuwiki-lsp/src/commands.rs::ops::render_aligned_table` (nuwiki-rs repo).
+" matches the table-alignment logic in the nuwiki-rs server.
 
 function! s:is_table_row(line) abort
-  return a:line =~# '^\s*|.*|\s*$'
+  return nuwiki#util#is_table_row(a:line)
 endfunction
 
 function! s:table_cell_starts(line) abort

autoload/nuwiki/diary.vim

@@ -106,17 +106,5 @@ endfunction
 " nuwiki#config#wikis() so g:nuwiki_wikis AND an upstream g:vimwiki_list both
 " work, falling back to the scalar g:nuwiki_* single-wiki shorthand.
 function! s:wiki_cfg(n) abort
-  let l:wikis = nuwiki#config#wikis()
-  let l:w = (a:n >= 0 && a:n < len(l:wikis)) ? l:wikis[a:n] : {}
-  let l:root  = expand(get(l:w, 'root',
-        \ get(g:, 'nuwiki_wiki_root', '~/vimwiki')))
-  let l:ext   = get(l:w, 'file_extension',
-        \ get(g:, 'nuwiki_file_extension', '.wiki'))
-  if l:ext[0] !=# '.' | let l:ext = '.' . l:ext | endif
-  let l:idx       = get(l:w, 'index', 'index')
-  let l:diary_rel = get(l:w, 'diary_rel_path',
-        \ get(g:, 'nuwiki_diary_rel_path', 'diary'))
-  let l:diary_idx = get(l:w, 'diary_index', 'diary')
-  return { 'root': l:root, 'ext': l:ext, 'idx': l:idx,
-        \  'diary_rel': l:diary_rel, 'diary_idx': l:diary_idx }
+  return nuwiki#util#wiki_cfg(a:n)
 endfunction

autoload/nuwiki/folding.vim

@@ -13,15 +13,7 @@
 " end of buffer).
 
 function! s:heading_level(line) abort
-  let l:lead = matchstr(a:line, '^\s*\zs=\+\ze\s')
-  if empty(l:lead) | return 0 | endif
-  let l:lvl = strlen(l:lead)
-  if l:lvl > 6 | return 0 | endif
-  let l:trail = matchstr(a:line, '\s\zs=\+\ze\s*$')
-  if empty(l:trail) || strlen(l:trail) != l:lvl
-    return 0
-  endif
-  return l:lvl
+  return nuwiki#util#heading_level(a:line)
 endfunction
 
 function! nuwiki#folding#expr() abort

autoload/nuwiki/textobjects.vim

@@ -24,15 +24,7 @@
 " ===== Heading helpers =====
 
 function! s:heading_level(line) abort
-  let l:lead = matchstr(a:line, '^\s*\zs=\+\ze\s')
-  if empty(l:lead) | return 0 | endif
-  let l:lvl = strlen(l:lead)
-  if l:lvl > 6 | return 0 | endif
-  let l:trail = matchstr(a:line, '\s\zs=\+\ze\s*$')
-  if empty(l:trail) || strlen(l:trail) != l:lvl
-    return 0
-  endif
-  return l:lvl
+  return nuwiki#util#heading_level(a:line)
 endfunction
 
 " Returns `[start, end]` line numbers, or `[]` if no heading found.
@@ -130,7 +122,7 @@ endfunction
 " ===== Table cell / column =====
 
 function! s:is_table_row(line) abort
-  return a:line =~# '^\s*|.*|\s*$'
+  return nuwiki#util#is_table_row(a:line)
 endfunction
 
 " Returns a list of `[start_col, end_col]` byte positions (1-based,

autoload/nuwiki/util.vim

@@ -0,0 +1,56 @@
+" autoload/nuwiki/util.vim — small shared helpers used across the VimL client
+" layers (commands, folding, textobjects, diary). Keeps the formerly
+" copy-pasted heading / table-row / wiki-config logic in one place. Mirrors
+" lua/nuwiki/util.lua so both clients behave identically.
+
+" Heading level of `line` (1-6), or 0 when it isn't a heading. Mirrors the
+" server lexer: balanced leading/trailing runs of `=` around a non-empty
+" title, capped at level 6. Accepts both the spaced (`== H ==`) and spaceless
+" (`==H==`) forms, matching vimwiki.
+function! nuwiki#util#heading_level(line) abort
+  let l:lead = matchstr(a:line, '^\s*\zs=\+')
+  if empty(l:lead)
+    return 0
+  endif
+  let l:lvl = strlen(l:lead)
+  if l:lvl > 6
+    return 0
+  endif
+  " Same-length trailing run of `=` at end of line (after optional trailing ws).
+  let l:trail = matchstr(a:line, '=\+\ze\s*$')
+  if empty(l:trail) || strlen(l:trail) != l:lvl
+    return 0
+  endif
+  " Non-empty title between the runs (rules out marker-only lines like
+  " `======`). `.\{-}` is non-greedy so the `=\+` runs keep their length.
+  let l:body = matchstr(a:line, '^\s*=\+\zs.\{-}\ze=\+\s*$')
+  if l:body =~# '^\s*$'
+    return 0
+  endif
+  return l:lvl
+endfunction
+
+" True when `line` looks like a table row (`| … |`).
+function! nuwiki#util#is_table_row(line) abort
+  return a:line =~# '^\s*|.*|\s*$'
+endfunction
+
+" Resolve the config dict for wiki #n (0-based), falling back to the scalar
+" g:nuwiki_* globals. Returns root/ext/idx/diary_rel/diary_idx/space.
+function! nuwiki#util#wiki_cfg(n) abort
+  let l:wikis = nuwiki#config#wikis()
+  let l:w = (a:n >= 0 && a:n < len(l:wikis)) ? l:wikis[a:n] : {}
+  let l:root  = expand(get(l:w, 'root',
+        \ get(g:, 'nuwiki_wiki_root', '~/vimwiki')))
+  let l:ext   = get(l:w, 'file_extension',
+        \ get(g:, 'nuwiki_file_extension', '.wiki'))
+  if l:ext[0] !=# '.' | let l:ext = '.' . l:ext | endif
+  let l:idx       = get(l:w, 'index', 'index')
+  let l:diary_rel = get(l:w, 'diary_rel_path',
+        \ get(g:, 'nuwiki_diary_rel_path', 'diary'))
+  let l:diary_idx = get(l:w, 'diary_index', 'diary')
+  let l:space = get(l:w, 'links_space_char',
+        \ get(g:, 'nuwiki_links_space_char', ' '))
+  return { 'root': l:root, 'ext': l:ext, 'idx': l:idx,
+        \  'diary_rel': l:diary_rel, 'diary_idx': l:diary_idx, 'space': l:space }
+endfunction

development/ONBOARDING.md

@@ -59,11 +59,13 @@ nuwiki/
 │
 └── .gitea/
     └── workflows/
-        └── ci.yaml             # Editor (Vim/Neovim) harnesses on every push/PR
+        ├── ci.yaml             # Editor (Vim/Neovim) harnesses on every push/PR
+        └── release.yaml        # Dispatch → stamp version, tag, Gitea release (no build)
 ```
 
-(The Rust server's build/release workflow lives in the separate
-[nuwiki-rs](https://code.gfran.co/gffranco/nuwiki-rs) repository.)
+(The Rust server's *binary* build/cross-compile workflow lives in the separate
+[nuwiki-rs](https://code.gfran.co/gffranco/nuwiki-rs) repository; this repo's
+release just tags the plugin.)
 
 ## Server Component
 
@@ -200,23 +202,23 @@ To modify the LSP server itself, clone the [nuwiki-rs](https://code.gfran.co/gff
 ## CI/CD
 
 This repo (editor client) uses Gitea Actions:
-- CI (`.gitea/workflows/ci.yaml`): Runs editor tests on every push/PR.
+- CI (`.gitea/workflows/ci.yaml`): Runs the editor harnesses on every push/PR.
+- Release (`.gitea/workflows/release.yaml`): `workflow_dispatch` with a `version` input — stamps `g:nuwiki_version`, tags `vX.Y.Z`, and publishes a Gitea release. No binary build (the plugin ships none).
 
-The Rust LSP server lives in [nuwiki-rs](https://code.gfran.co/gffranco/nuwiki-rs) which handles:
-- Release (`.gitea/workflows/release.yaml`): Triggers on `v*` tag — cross-compiles for Linux targets and creates a Gitea release with downloadable binaries.
+The Rust LSP server lives in [nuwiki-rs](https://code.gfran.co/gffranco/nuwiki-rs) which has its own release workflow — it cross-compiles `nuwiki-ls` for Linux targets and publishes the downloadable binaries the plugin fetches.
 
 ### Releasing the plugin
 
-This repo has no release workflow — the plugin is distributed by plugin
-managers cloning the git repo, so a "release" is just a git tag. There is no
-automated version stamping (the old `scripts/set-version.sh` moved to
-nuwiki-rs with the Rust crates), so cut a plugin release by hand:
-
-1. Bump `g:nuwiki_version` in `plugin/nuwiki.vim`.
-2. Commit, then `git tag vX.Y.Z && git push --tags`.
+Releases are cut from the Actions UI — **Release** workflow
+(`.gitea/workflows/release.yaml`) → **Run workflow** → enter the version
+(e.g. `0.5.1`). It stamps `g:nuwiki_version` in `plugin/nuwiki.vim`,
+sanity-checks that the plugin still sources, commits `chore(release): X.Y.Z`,
+pushes the `vX.Y.Z` tag, and publishes a Gitea release entry. The plugin ships
+no binary, so the release carries no assets by design.
 
 The plugin and the `nuwiki-ls` server version independently; the binary is
-fetched from nuwiki-rs's `latest` release at install time.
+fetched from nuwiki-rs's `latest` release at install time. To do it by hand
+instead: bump `g:nuwiki_version`, commit, then `git tag vX.Y.Z && git push --tags`.
 
 ## License
 

lua/nuwiki/commands.lua

@@ -24,13 +24,10 @@ local function find_client()
 end
 
 local function position_params(client)
-  -- Neovim 0.12+ requires `position_encoding` explicitly; older
-  -- versions accept the no-arg form.
+  -- Neovim 0.11+ requires the position encoding explicitly (the no-arg form is
+  -- deprecated); pass the current window + the client's negotiated encoding.
   local encoding = client and client.offset_encoding or 'utf-16'
-  local ok, params = pcall(vim.lsp.util.make_position_params, 0, encoding)
-  if ok then return params end
-  -- Fallback for Neovim < 0.10 where the second arg wasn't a thing.
-  return vim.lsp.util.make_position_params()
+  return vim.lsp.util.make_position_params(0, encoding)
 end
 
 local function exec(command, arguments, on_result)
@@ -51,21 +48,13 @@ local function exec(command, arguments, on_result)
   end
   local bufnr = vim.api.nvim_get_current_buf()
   local payload = { command = command, arguments = arguments or {} }
-  -- Neovim 0.12 deprecates `client.request(...)` in favour of the
-  -- method form `client:request(...)`. Prefer the method, fall back
-  -- on older Neovim where it isn't defined yet.
-  local req = client.request
-  if type(req) ~= 'function' then
+  -- The method form `client:request(...)` is the correct, non-deprecated call
+  -- on every supported Neovim (0.11+); the old `client.request(...)` function
+  -- form was deprecated in its favour.
+  if type(client.request) ~= 'function' then
     return
   end
-  if rawget(getmetatable(client) or {}, '__index') and client.request ~= nil then
-    -- Method-style works for both colon and dot calls on Neovim's
-    -- Client metatable, but pass `self` explicitly for the older
-    -- function-style signature compatibility.
   client:request('workspace/executeCommand', payload, handler, bufnr)
-  else
-    client.request('workspace/executeCommand', payload, handler, bufnr)
-  end
 end
 
 local function open_uri(uri, tab)
@@ -128,38 +117,42 @@ local function cursor_inside_wikilink()
   return open_at ~= nil
 end
 
-local function wrap_cword_as_wikilink()
-  local cword = vim.fn.expand('<cword>')
-  if cword == '' then return false end
-  -- Replace just this `<cword>` occurrence using `*` (the start of
-  -- the last cursor match) — `ciw[[<C-r>"]]` style, but we do it
-  -- via the API so we don't depend on register state.
-  local row, col = unpack(vim.api.nvim_win_get_cursor(0))
-  local line = vim.api.nvim_get_current_line()
-  -- Locate the word boundaries around cursor (0-based col).
+-- Find the word around 0-based cursor `col` in `line`. Returns `left` (0-based
+-- index of the char before the word start) and `right` (1-based index one past
+-- the word's last char), so `word = line:sub(left + 1, right - 1)`. A "word" is
+-- a run of `[%w_-]`.
+local function word_boundaries(line, col)
   local left = col
   while left > 0 and line:sub(left, left):match('[%w_-]') do
     left = left - 1
   end
-  -- `left` now sits one before the word start (or at -1 / col=0 if at start).
-  local start_col = left
-  if line:sub(left + 1, left + 1):match('[%w_-]') then
-    start_col = left
-  else
-    start_col = left + 1
+  -- `left` sits one before the word start; nudge forward if it's not on a
+  -- word char (cursor was already at the very start).
+  if not line:sub(left + 1, left + 1):match('[%w_-]') then
+    left = left + 1
   end
-  local right = start_col + 1
+  local right = left + 1
   while right <= #line and line:sub(right, right):match('[%w_-]') do
     right = right + 1
   end
-  local stop_col = right - 1
-  local word = line:sub(start_col + 1, stop_col)
+  return left, right
+end
+
+local function wrap_cword_as_wikilink()
+  local cword = vim.fn.expand('<cword>')
+  if cword == '' then return false end
+  -- Replace just this `<cword>` occurrence via the API so we don't depend on
+  -- register state.
+  local row, col = unpack(vim.api.nvim_win_get_cursor(0))
+  local line = vim.api.nvim_get_current_line()
+  local left, right = word_boundaries(line, col)
+  local word = line:sub(left + 1, right - 1)
   if word == '' then return false end
-  local new_line = line:sub(1, start_col) .. '[[' .. word .. ']]' .. line:sub(stop_col + 1)
+  local new_line = line:sub(1, left) .. '[[' .. word .. ']]' .. line:sub(right)
   vim.api.nvim_set_current_line(new_line)
   -- Put cursor inside the new `[[…]]` so the LSP definition request
   -- lands on the wikilink.
-  vim.api.nvim_win_set_cursor(0, { row, start_col + 2 })
+  vim.api.nvim_win_set_cursor(0, { row, left + 2 })
   return true
 end
 
@@ -331,8 +324,9 @@ function M.search(args)
   end
   local config = require('nuwiki.config')
   local file = vim.fn.expand('%:p')
+  local wikis = config.wiki_list()
   local root, ext = '', '.wiki'
-  for _, w in ipairs(config.wiki_list()) do
+  for _, w in ipairs(wikis) do
     local wroot = vim.fn.fnamemodify(vim.fn.expand(w.root), ':p')
     if file:sub(1, #wroot) == wroot then
       root, ext = wroot, w.ext or ext
@@ -340,7 +334,7 @@ function M.search(args)
     end
   end
   if root == '' then
-    local first = config.wiki_list()[1]
+    local first = wikis[1]
     if first then
       root = vim.fn.fnamemodify(vim.fn.expand(first.root), ':p')
       ext = first.ext or ext
@@ -348,9 +342,16 @@ function M.search(args)
   end
   if not ext:match('^%.') then ext = '.' .. ext end
   local glob = root == '' and '**' or (vim.fn.fnameescape(root) .. '**/*' .. ext)
-  local ok = pcall(vim.cmd, 'lvimgrep /' .. vim.fn.escape(pat, '/') .. '/j ' .. glob)
+  local ok, err = pcall(vim.cmd, 'lvimgrep /' .. vim.fn.escape(pat, '/') .. '/j ' .. glob)
   if not ok then
+    -- E480 = no match: a normal "nothing found", not an error. Anything else
+    -- (bad pattern, unreadable dir) is surfaced verbatim. Mirrors the VimL
+    -- twin's `catch /E480/`.
+    if type(err) == 'string' and err:match('E480') then
       vim.notify('nuwiki: no match for ' .. pat, vim.log.levels.WARN)
+    else
+      vim.notify('nuwiki: ' .. tostring(err), vim.log.levels.ERROR)
+    end
     return
   end
   vim.cmd('lopen')
@@ -818,9 +819,7 @@ end
 -- *before* placing the cursor, all in a single `vim.schedule` tick.
 -- The algorithm matches the LSP server's implementation in nuwiki-rs.
 
-local function is_table_row(line)
-  return line ~= nil and line:match('^%s*|.*|%s*$') ~= nil
-end
+local is_table_row = require('nuwiki.util').is_table_row
 
 local function table_cell_starts(line)
   -- Returns 1-based byte positions of each `|` separator. Cell N spans
@@ -980,6 +979,27 @@ function M._table_insert_row_below(row)
   vim.api.nvim_win_set_cursor(0, { row + 1, #indent + 1 })
 end
 
+-- Parse a list-item line into indent / marker / trailing text. Handles
+-- `-`/`*`/`#` bullets and numbered `N.`/`N)` markers (the marker includes the
+-- number). `marker` is nil when `line` isn't a list item.
+local function parse_list_marker(line)
+  local indent, marker, after = line:match('^(%s*)([%-%*%#])%s(.*)$')
+  if not marker then
+    local n
+    indent, n, marker, after = line:match('^(%s*)(%d+)([%.%)])%s(.*)$')
+    if marker then marker = n .. marker end
+  end
+  return indent, marker, after
+end
+
+-- True when any auto-indent mechanism is active. nvim then re-inserts the
+-- previous line's indent after a returned `<CR>`, so we must not also add our
+-- own copy (which would push the continuation one level too deep).
+local function has_auto_indent()
+  return vim.bo.autoindent or vim.bo.smartindent or vim.bo.cindent
+      or (vim.bo.indentexpr ~= nil and vim.bo.indentexpr ~= '')
+end
+
 --- Smart `<CR>` for insert mode — vimwiki parity for `:VimwikiReturn`.
 --- Used as an `<expr>` keymap so the function is side-effect-free on
 --- the buffer (textlock is active). The table-row branch hands off to
@@ -1003,12 +1023,7 @@ function M.smart_return()
   end
 
   -- List item with marker?
-  local indent, marker, after = line:match('^(%s*)([%-%*%#])%s(.*)$')
-  if not marker then
-    local n
-    indent, n, marker, after = line:match('^(%s*)(%d+)([%.%)])%s(.*)$')
-    if marker then marker = n .. marker end
-  end
+  local indent, marker, after = parse_list_marker(line)
   if marker then
     local cb = after:match('^%[[%sxXoO%.%-]%]%s*(.*)$')
     local body = cb or after
@@ -1018,14 +1033,8 @@ function M.smart_return()
       -- "break out of the list" behaviour on an empty bullet).
       return esc .. '0DA' .. cr
     end
-    -- nvim defaults `autoindent=on`, which inserts the previous line's
-    -- indent right after the `<CR>` we return. If we then add our own
-    -- `indent`, the new bullet is pushed one level deeper than the one
-    -- the user is continuing. Skip our copy whenever any auto-indent
-    -- mechanism is active and let Vim/Nvim insert the indent for us.
-    local auto = vim.bo.autoindent or vim.bo.smartindent or vim.bo.cindent
-        or (vim.bo.indentexpr ~= nil and vim.bo.indentexpr ~= '')
-    local effective_indent = auto and '' or indent
+    -- Skip our own indent copy when auto-indent is active (see has_auto_indent).
+    local effective_indent = has_auto_indent() and '' or indent
     return cr .. effective_indent .. marker .. ' ' .. (cb and '[ ] ' or '')
   end
   return cr
@@ -1038,23 +1047,15 @@ function M.smart_shift_return()
   local line = vim.api.nvim_get_current_line()
   local cr = vim.api.nvim_replace_termcodes('<CR>', true, false, true)
   if vim.fn.pumvisible() == 1 then return cr end
-  local indent, marker, after = line:match('^(%s*)([%-%*%#])%s(.*)$')
-  if not marker then
-    local n
-    indent, n, marker, after = line:match('^(%s*)(%d+)([%.%)])%s(.*)$')
-    if marker then marker = n .. marker end
-  end
+  local indent, marker, after = parse_list_marker(line)
   if not marker then
     return cr
   end
   -- Align under the text: marker width + 1 space (+ 4 for a `[ ] ` checkbox).
   local has_cb = after:match('^%[[%sxXoO%.%-]%]') ~= nil
   local pad = #marker + 1 + (has_cb and 4 or 0)
-  -- Mirror smart_return's auto-indent handling: when an auto-indent mechanism
-  -- is active, Vim already re-inserts the line's indent after `<CR>`.
-  local auto = vim.bo.autoindent or vim.bo.smartindent or vim.bo.cindent
-      or (vim.bo.indentexpr ~= nil and vim.bo.indentexpr ~= '')
-  return cr .. (auto and '' or indent) .. string.rep(' ', pad)
+  -- Mirror smart_return's auto-indent handling (see has_auto_indent).
+  return cr .. (has_auto_indent() and '' or indent) .. string.rep(' ', pad)
 end
 
 -- :VimwikiReturn / :NuwikiReturn — the command form of the smart `<CR>`
@@ -1243,17 +1244,7 @@ function M.colorize(color, visual)
   local cword = vim.fn.expand('<cword>')
   if cword == '' then return end
   local col = vim.api.nvim_win_get_cursor(0)[2]
-  local left = col
-  while left > 0 and line:sub(left, left):match('[%w_%-]') do
-    left = left - 1
-  end
-  if not line:sub(left + 1, left + 1):match('[%w_%-]') then
-    left = left + 1
-  end
-  local right = left + 1
-  while right <= #line and line:sub(right, right):match('[%w_%-]') do
-    right = right + 1
-  end
+  local left, right = word_boundaries(line, col)
   local before = line:sub(1, left)
   local word = line:sub(left + 1, right - 1)
   local after = line:sub(right)

lua/nuwiki/folding.lua

@@ -9,16 +9,7 @@
 local M = {}
 
 --- Heading level from one line of source. Returns 0 for non-headings.
-local function heading_level(line)
-  local lead = line:match('^%s*(=+)%s')
-  if not lead then return 0 end
-  local lvl = #lead
-  if lvl > 6 then return 0 end
-  -- Require a matching trailing run of `=`s.
-  local trail = line:match('%s(=+)%s*$')
-  if not trail or #trail ~= lvl then return 0 end
-  return lvl
-end
+local heading_level = require('nuwiki.util').heading_level
 
 --- `foldexpr` body. Returns a fold-marker string per `:help fold-expr`.
 function M.expr()

lua/nuwiki/ftplugin.lua

@@ -18,16 +18,13 @@ local function setup_folding(bufnr, folding_mode)
   -- yet attached) degrades to the regex variant instead of spamming
   -- the user with E5108 errors per line.
   local apply = function()
-    if folding_mode == 'expr'
-       or not (vim.fn.has('nvim-0.11') == 1 and vim.lsp.foldexpr)
-    then
     vim.opt_local.foldmethod = 'expr'
+    vim.opt_local.foldtext = 'v:lua.require("nuwiki.folding").foldtext()'
+    -- Min Neovim is 0.11, so vim.lsp.foldexpr is the only capability gate.
+    if folding_mode == 'expr' or not vim.lsp.foldexpr then
       vim.opt_local.foldexpr = 'v:lua.require("nuwiki.folding").expr()'
-      vim.opt_local.foldtext = 'v:lua.require("nuwiki.folding").foldtext()'
     else
-      vim.opt_local.foldmethod = 'expr'
       vim.opt_local.foldexpr = 'v:lua.require("nuwiki.folding").lsp_expr()'
-      vim.opt_local.foldtext = 'v:lua.require("nuwiki.folding").foldtext()'
     end
   end
 

lua/nuwiki/install.lua

@@ -53,8 +53,8 @@ local function build_from_source(dest)
   local root = plugin_root()
   vim.notify('nuwiki: building nuwiki-ls from source (cargo build --release) …', vim.log.levels.INFO)
   local rs_repo = vim.fn.fnamemodify(root, ':h:h') .. '/nuwiki-rs'
-  if not vim.uv then vim.uv = vim.loop end
-  local rs_exists = vim.uv.fs_stat(rs_repo)
+  local uv = vim.uv or vim.loop
+  local rs_exists = uv.fs_stat(rs_repo)
   if not rs_exists then
     vim.notify('nuwiki: cloning nuwiki-rs …', vim.log.levels.INFO)
     local _ = vim.fn.system({

lua/nuwiki/keymaps.lua

@@ -29,13 +29,7 @@ end
 -- vimwiki's `vimwiki#base#goto_*_header` family does, just simpler:
 -- match `^\s*=` runs as heading lines.
 
-local function heading_level(line)
-  local lead = line and line:match('^%s*(=+)%s')
-  if not lead then return 0 end
-  local trail = line:match('%s(=+)%s*$')
-  if not trail or #trail ~= #lead then return 0 end
-  return #lead
-end
+local heading_level = require('nuwiki.util').heading_level
 
 local function jump_heading(direction, predicate)
   local total = vim.api.nvim_buf_line_count(0)
@@ -103,30 +97,22 @@ function link.prev() jump_to_pattern([[\[\[]], -1) end
 -- approximate: when the current line starts with a list marker, insert
 -- the marker on the new line; otherwise fall back to plain o/O.
 
-local function open_below_with_bullet()
+-- `cmd` is 'o' (open below) or 'O' (open above). Off a list item it's a plain
+-- o/O. The below ('o') variant also re-adds a `[ ] ` checkbox prefix when the
+-- source item has one, so the continuation is a fresh unchecked item; the
+-- above ('O') variant inserts a bare bullet (preserves prior behaviour).
+local function open_with_bullet(cmd)
   local line = vim.fn.getline('.')
   local indent, marker = line:match('^(%s*)([%-%*#])%s')
   if not marker then
-    vim.api.nvim_feedkeys('o', 'n', false)
+    vim.api.nvim_feedkeys(cmd, 'n', false)
     return
   end
   local prefix = indent .. marker .. ' '
-  -- Also preserve checkbox if present
-  local checkbox = line:match('^%s*[%-%*#]%s+(%[[%sxXoO%.%-]%])')
-  if checkbox then
+  if cmd == 'o' and line:match('^%s*[%-%*#]%s+(%[[%sxXoO%.%-]%])') then
     prefix = prefix .. '[ ] '
   end
-  vim.api.nvim_feedkeys('o' .. prefix, 'n', false)
-end
-local function open_above_with_bullet()
-  local line = vim.fn.getline('.')
-  local indent, marker = line:match('^(%s*)([%-%*#])%s')
-  if not marker then
-    vim.api.nvim_feedkeys('O', 'n', false)
-    return
-  end
-  local prefix = indent .. marker .. ' '
-  vim.api.nvim_feedkeys('O' .. prefix, 'n', false)
+  vim.api.nvim_feedkeys(cmd .. prefix, 'n', false)
 end
 
 -- ===== Public attach =====
@@ -259,8 +245,8 @@ function M.attach(bufnr, mappings)
         { desc = 'nuwiki: remove checkbox (current item)' }, bufnr)
     map('n', 'gL', cmd.list_remove_checkbox_in_list,
         { desc = 'nuwiki: remove checkboxes (whole list)' }, bufnr)
-    map('n', 'o',         open_below_with_bullet, { desc = 'nuwiki: open below + bullet' }, bufnr)
-    map('n', 'O',         open_above_with_bullet, { desc = 'nuwiki: open above + bullet' }, bufnr)
+    map('n', 'o',         function() open_with_bullet('o') end, { desc = 'nuwiki: open below + bullet' }, bufnr)
+    map('n', 'O',         function() open_with_bullet('O') end, { desc = 'nuwiki: open above + bullet' }, bufnr)
 
     -- Insert-mode bindings (matches upstream vimwiki). The list helpers
     -- mutate the buffer via the LSP / `nvim_buf_set_lines`, both of

lua/nuwiki/lsp.lua

@@ -64,7 +64,9 @@ local function root_dir_for(buf_file)
   if opts.wikis then
     local buf_norm = vim.fs.normalize(buf_file)
     for _, w in ipairs(opts.wikis) do
-      local root = vim.fn.expand(w.root or '')
+      -- Normalize both sides so the prefix compare survives mixed path
+      -- separators (e.g. on Windows); buf_norm is already normalized.
+      local root = vim.fs.normalize(vim.fn.expand(w.root or ''))
       if root ~= '' and buf_norm:sub(1, #root) == root then
         return root
       end

lua/nuwiki/textobjects.lua

@@ -15,13 +15,7 @@ local M = {}
 
 -- ===== Heading helpers =====
 
-local function heading_level(line)
-  local lead = line and line:match('^%s*(=+)%s')
-  if not lead then return 0 end
-  local trail = line:match('%s(=+)%s*$')
-  if not trail or #trail ~= #lead then return 0 end
-  return #lead
-end
+local heading_level = require('nuwiki.util').heading_level
 
 --- Find the start/end of the heading block at `lnum`.
 --- `with_subtree` controls whether we descend into sub-headings:
@@ -123,9 +117,7 @@ end
 
 -- ===== Table cell / column =====
 
-local function is_table_row(line)
-  return line:match('^%s*|.*|%s*$') ~= nil
-end
+local is_table_row = require('nuwiki.util').is_table_row
 
 --- Compute the byte ranges of cells on a `|`-delimited row.
 --- Returns a list of `{start_byte, end_byte}` 1-based inclusive of the

lua/nuwiki/util.lua

@@ -0,0 +1,43 @@
+-- lua/nuwiki/util.lua — small pure-text helpers shared across the client
+-- layers (keymaps, folding, textobjects, commands). Dependency-free so any
+-- module can require it without load-order concerns.
+
+local M = {}
+
+-- Heading level of `line` (1-6), or 0 when it isn't a heading. Mirrors the
+-- server lexer: balanced leading/trailing runs of `=` around non-empty text,
+-- capped at level 6 (a 7+ `=` run is not a heading). Both the spaced
+-- (`== H ==`) and spaceless (`==H==`) forms are accepted, matching vimwiki.
+-- `nil`-safe.
+function M.heading_level(line)
+  if not line then
+    return 0
+  end
+  local lead = line:match('^%s*(=+)')
+  if not lead then
+    return 0
+  end
+  local lvl = #lead
+  if lvl > 6 then
+    return 0
+  end
+  -- Same-length trailing run of `=` at end of line (after optional trailing ws).
+  local trail = line:match('(=+)%s*$')
+  if not trail or #trail ~= lvl then
+    return 0
+  end
+  -- Non-empty title between the two runs (rules out marker-only lines like
+  -- `======`). `(.-)` is lazy, so the leading/trailing `=+` keep their runs.
+  local body = line:match('^%s*=+(.-)=+%s*$')
+  if not body or body:match('^%s*$') then
+    return 0
+  end
+  return lvl
+end
+
+-- True when `line` looks like a table row (`| … |`). `nil`-safe.
+function M.is_table_row(line)
+  return line ~= nil and line:match('^%s*|.*|%s*$') ~= nil
+end
+
+return M

plugin/nuwiki.vim

@@ -4,8 +4,9 @@
 " their config (lazy.nvim does this automatically through `opts`). On Vim
 " we start the LSP client when a vimwiki buffer is loaded.
 "
-" This file contains wiring only — all logic lives in
-" the Rust language server.
+" This file contains wiring only. The editor layers (VimL + Lua) are thin
+" clients; the heavy lifting is done by the nuwiki-ls language server, which
+" is built from the separate nuwiki-rs repo and downloaded at install time.
 
 if exists('g:loaded_nuwiki')
   finish
@@ -15,7 +16,7 @@ let g:loaded_nuwiki = 1
 " Plugin version, surfaced by :VimwikiShowVersion / :NuwikiShowVersion.
 " Set before the Neovim early-return below so both clients see the global.
 if !exists('g:nuwiki_version')
-  let g:nuwiki_version = '0.5.0'
+  let g:nuwiki_version = '0.5.1'
 endif
 
 " Resolve the plugin root NOW, while this script is being sourced and