fix(genvimvim): generate prefixed boolean options properly (#27487)

src/nvim/generators/gen_vimvim.lua

@@ -83,7 +83,7 @@ local vimopt_start = 'syn keyword vimOption contained '
 w('\n\n' .. vimopt_start)
 
 for _, opt_desc in ipairs(options.options) do
-  if not opt_desc.varname or opt_desc.varname:sub(1, 7) ~= 'p_force' then
+  if not opt_desc.immutable then
     if lld.line_length > 850 then
       w('\n' .. vimopt_start)
     end
@@ -91,7 +91,7 @@ for _, opt_desc in ipairs(options.options) do
     if opt_desc.abbreviation then
       w(' ' .. opt_desc.abbreviation)
     end
-    if opt_desc.type == 'bool' then
+    if opt_desc.type == 'boolean' then
       w(' inv' .. opt_desc.full_name)
       w(' no' .. opt_desc.full_name)
       if opt_desc.abbreviation then

test/functional/plugin/vim_syntax_spec.lua

@@ -0,0 +1,40 @@
+local helpers = require('test.functional.helpers')(after_each)
+local Screen = require('test.functional.ui.screen')
+local clear = helpers.clear
+local exec = helpers.exec
+local api = helpers.api
+
+describe('Vimscript syntax highlighting', function()
+  local screen
+
+  before_each(function()
+    clear()
+    helpers.add_builddir_to_rtp()
+    exec([[
+      setfiletype vim
+      syntax on
+    ]])
+    screen = Screen.new()
+    screen:set_default_attr_ids({
+      [0] = { foreground = Screen.colors.Blue, bold = true },
+      [1] = { foreground = Screen.colors.Brown, bold = true },
+      [2] = { foreground = tonumber('0x6a0dad') },
+    })
+    screen:attach()
+  end)
+
+  it('prefixed boolean options are highlighted properly', function()
+    api.nvim_buf_set_lines(0, 0, -1, true, {
+      'set number incsearch hlsearch',
+      'set nonumber noincsearch nohlsearch',
+      'set invnumber invincsearch invhlsearch',
+    })
+    screen:expect([[
+      {1:^set} {2:number} {2:incsearch} {2:hlsearch}                        |
+      {1:set} {2:nonumber} {2:noincsearch} {2:nohlsearch}                  |
+      {1:set} {2:invnumber} {2:invincsearch} {2:invhlsearch}               |
+      {0:~                                                    }|*10
+                                                           |
+    ]])
+  end)
+end)