merge: resolve conflict with origin/main

Problem: the single dev shell mixed dev tooling (linters, test runner)
with preset compiler tools, causing heavy rebuilds (e.g. Chromium for
`mermaid-cli`) for contributors who only need the dev tools.

Solution: extract dev tooling into a shared `devTools` list and expose
two shells — `default` for development and `presets` for running all
built-in preset compilers (`typst`, `texliveMedium`, `tectonic`,
`pandoc`, `asciidoctor`, `quarto`, `plantuml`, `mermaid-cli`).

README.md

@@ -1,6 +1,6 @@
 # preview.nvim
 
-**Universal previewer for Neovim**
+**Universal document previewer for Neovim**
 
 An extensible framework for compiling and previewing _any_ documents (LaTeX,
 Typst, Markdown, etc.)—diagnostics included.
@@ -81,8 +81,3 @@ vim.g.preview = {
   typst = { open = { 'sioyek', '--new-instance' } },
 }
 ```
-
-**Q: How do I set up SyncTeX (forward/inverse search)?**
-
-See `:help preview-synctex` for full recipes covering Zathura, Sioyek, and
-Okular.

doc/preview.txt

@@ -26,7 +26,6 @@ CONTENTS                                                   *preview-contents*
   7. Lua API ................................................... |preview-api|
   8. Events ............................................... |preview-events|
   9. Health ............................................... |preview-health|
-  10. SyncTeX ............................................. |preview-synctex|
 
 ==============================================================================
 REQUIREMENTS                                           *preview-requirements*
@@ -273,116 +272,5 @@ Checks: ~
 - Each configured provider's binary is executable
 - Each configured provider's opener binary (if any) is executable
 
-==============================================================================
-SYNCTEX                                                    *preview-synctex*
-
-SyncTeX enables bidirectional navigation between LaTeX source and the
-compiled PDF. The `latex` preset compiles with `-synctex=1` by default.
-
-Forward search (editor -> viewer) requires caching the output path.
-Inverse search (viewer -> editor) requires a fixed Neovim server socket.
-
-The following configs leverage the below basic setup: ~
-
->lua
-    vim.fn.serverstart('/tmp/nvim-preview.sock')
-
-    local synctex_pdf = {}
-    vim.api.nvim_create_autocmd('User', {
-      pattern = 'PreviewCompileSuccess',
-      callback = function(args)
-        synctex_pdf[args.data.bufnr] = args.data.output
-      end,
-    })
-<
-
-The recipes below bind `<leader>s` for forward search. To scroll the PDF
-automatically on cursor movement, call the forward search function from a
-|CursorMoved| or |CursorHold| autocmd instead.
-
-Viewer-specific recipes: ~
-
-                                                    *preview-synctex-zathura*
-Zathura ~
-
-Inverse search: Ctrl+click.
-
->lua
-    vim.keymap.set('n', '<leader>s', function()
-      local pdf = synctex_pdf[vim.api.nvim_get_current_buf()]
-      if pdf then
-        vim.fn.jobstart({
-          'zathura', '--synctex-forward',
-          vim.fn.line('.') .. ':0:' .. vim.fn.expand('%:p'), pdf,
-        })
-      end
-    end)
-
-    vim.g.preview = {
-      latex = {
-        open = {
-          'zathura',
-          '--synctex-editor-command',
-          'nvim --server /tmp/nvim-preview.sock'
-            .. [[ --remote-expr "execute('b +%{line} %{input}')"]],
-        },
-      },
-    }
-<
-
-                                                     *preview-synctex-sioyek*
-Sioyek ~
-
-Inverse search: right-click with synctex mode active.
-
-Add to `~/.config/sioyek/prefs_user.config`: >
-    inverse_search_command nvim --server /tmp/nvim-preview.sock --remote-expr "execute('b +%2 %1')"
-<
-
->lua
-    vim.keymap.set('n', '<leader>s', function()
-      local pdf = synctex_pdf[vim.api.nvim_get_current_buf()]
-      if pdf then
-        vim.fn.jobstart({
-          'sioyek',
-          '--instance-name', 'preview',
-          '--forward-search-file', vim.fn.expand('%:p'),
-          '--forward-search-line', tostring(vim.fn.line('.')),
-          pdf,
-        })
-      end
-    end)
-
-    vim.g.preview = {
-      latex = {
-        open = { 'sioyek', '--instance-name', 'preview' },
-      },
-    }
-<
-
-                                                     *preview-synctex-okular*
-Okular ~
-
-Inverse search (Shift+click): one-time GUI setup via
-Settings -> Configure Okular -> Editor -> Custom Text Editor: >
-    nvim --server /tmp/nvim-preview.sock --remote-expr "execute('b +%l %f')"
-<
-
->lua
-    vim.keymap.set('n', '<leader>s', function()
-      local pdf = synctex_pdf[vim.api.nvim_get_current_buf()]
-      if pdf then
-        vim.fn.jobstart({
-          'okular', '--unique',
-          ('%s#src:%d:%s'):format(pdf, vim.fn.line('.'), vim.fn.expand('%:p')),
-        })
-      end
-    end)
-
-    vim.g.preview = {
-      latex = { open = { 'okular', '--unique' } },
-    }
-<
-
 ==============================================================================
  vim:tw=78:ts=8:ft=help:norl:

flake.nix

@@ -19,8 +19,7 @@
     {
       formatter = forEachSystem (pkgs: pkgs.nixfmt-tree);
 
-      devShells = forEachSystem (
-        pkgs:
+      devShells = forEachSystem (pkgs:
         let
           devTools = [
             (pkgs.luajit.withPackages (
@@ -34,16 +33,6 @@
             pkgs.selene
             pkgs.lua-language-server
           ];
-          okular-wrapped = pkgs.symlinkJoin {
-            name = "okular";
-            paths = [ pkgs.kdePackages.okular ];
-            nativeBuildInputs = [ pkgs.makeWrapper ];
-            postBuild = ''
-              wrapProgram $out/bin/okular \
-                --prefix XDG_DATA_DIRS : "${pkgs.gsettings-desktop-schemas}/share/gsettings-schemas/${pkgs.gsettings-desktop-schemas.name}" \
-                --prefix XDG_DATA_DIRS : "${pkgs.gtk3}/share/gsettings-schemas/${pkgs.gtk3.name}"
-            '';
-          };
         in
         {
           default = pkgs.mkShell {
@@ -59,12 +48,8 @@
               pkgs.quarto
               pkgs.plantuml
               pkgs.mermaid-cli
-              pkgs.zathura
-              pkgs.sioyek
-              okular-wrapped
             ];
           };
-        }
-      );
+        });
     };
 }

lua/preview/presets.lua

@@ -115,24 +115,6 @@ local function parse_asciidoctor(output)
   return diagnostics
 end
 
----@param output string
----@return preview.Diagnostic[]
-local function parse_mermaid(output)
-  local lnum = output:match('Parse error on line (%d+)')
-  if not lnum then
-    return {}
-  end
-  local msg = output:match('(Expecting .+)') or 'parse error'
-  return {
-    {
-      lnum = tonumber(lnum) - 1,
-      col = 0,
-      message = msg,
-      severity = vim.diagnostic.severity.ERROR,
-    },
-  }
-end
-
 ---@type preview.ProviderConfig
 M.typst = {
   ft = 'typst',
@@ -331,7 +313,19 @@ M.mermaid = {
     return (ctx.file:gsub('%.mmd$', '.svg'))
   end,
   error_parser = function(output)
-    return parse_mermaid(output)
+    local diagnostics = {}
+    for line in output:gmatch('[^\r\n]+') do
+      local lnum = line:match('^%s*Parse error on line (%d+)')
+      if lnum then
+        table.insert(diagnostics, {
+          lnum = tonumber(lnum) - 1,
+          col = 0,
+          message = line,
+          severity = vim.diagnostic.severity.ERROR,
+        })
+      end
+    end
+    return diagnostics
   end,
   clean = function(ctx)
     return { 'rm', '-f', (ctx.file:gsub('%.mmd$', '.svg')) }