1 files changed, 15 insertions, 11 deletions

diff --git a/scripts/gen_vimdoc.py b/scripts/gen_vimdoc.py
index bca3dd816f..3ee9d8b5dd 100755
--- a/scripts/gen_vimdoc.py
+++ b/scripts/gen_vimdoc.py
@@ -2,9 +2,7 @@
 """Generates Nvim :help docs from C/Lua docstrings, using Doxygen.
 
 Also generates *.mpack files. To inspect the *.mpack structure:
-
-    :new | put=v:lua.vim.inspect(msgpackparse(readfile('runtime/doc/api.mpack')))
-
+    :new | put=v:lua.vim.inspect(v:lua.vim.mpack.unpack(readfile('runtime/doc/api.mpack','B')))
 
 Flow:
     main
@@ -260,7 +258,7 @@ CONFIG = {
         'helptag_fmt': lambda name: (
             '*lua-treesitter-core*'
             if name.lower() == 'treesitter'
-            else f'*treesitter-{name.lower()}*'),
+            else f'*lua-treesitter-{name.lower()}*'),
         'fn_helptag_fmt': lambda fstem, name: (
             f'*{name}()*'
             if name != 'new'
@@ -287,7 +285,7 @@ annotation_map = {
     'FUNC_API_FAST': '|api-fast|',
     'FUNC_API_CHECK_TEXTLOCK': 'not allowed when |textlock| is active',
     'FUNC_API_REMOTE_ONLY': '|RPC| only',
-    'FUNC_API_LUA_ONLY': '|vim.api| only',
+    'FUNC_API_LUA_ONLY': 'Lua |vim.api| only',
 }
 
 
@@ -295,14 +293,16 @@ annotation_map = {
 # or if `cond()` is callable and returns True.
 def debug_this(o, cond=True):
     name = ''
+    if cond is False:
+        return
     if not isinstance(o, str):
         try:
             name = o.nodeName
             o = o.toprettyxml(indent='  ', newl='\n')
         except Exception:
             pass
-    if ((callable(cond) and cond())
-            or (not callable(cond) and cond)
+    if (cond is True
+            or (callable(cond) and cond())
             or (not callable(cond) and cond in o)):
         raise RuntimeError('xxx: {}\n{}'.format(name, o))
 
@@ -671,7 +671,7 @@ def fmt_node_as_vimhelp(parent, width=text_width - indentation, indent='',
         max_name_len = max_name(m.keys()) + 4
         out = ''
         for name, desc in m.items():
-            name = '    {}'.format('{{{}}}'.format(name).ljust(max_name_len))
+            name = '  • {}'.format('{{{}}}'.format(name).ljust(max_name_len))
             out += '{}{}\n'.format(name, desc)
         return out.rstrip()
 
@@ -801,7 +801,7 @@ def extract_from_xml(filename, target, width, fmt_vimhelp):
 
         prefix = '%s(' % name
         suffix = '%s)' % ', '.join('{%s}' % a[1] for a in params
-                                   if a[0] not in ('void', 'Error'))
+                                   if a[0] not in ('void', 'Error', 'Arena'))
 
         if not fmt_vimhelp:
             c_decl = '%s %s(%s);' % (return_type, name, ', '.join(c_args))
@@ -887,7 +887,7 @@ def extract_from_xml(filename, target, width, fmt_vimhelp):
 def fmt_doxygen_xml_as_vimhelp(filename, target):
     """Entrypoint for generating Vim :help from from Doxygen XML.
 
-    Returns 3 items:
+    Returns 2 items:
       1. Vim help text for functions found in `filename`.
       2. Vim help text for deprecated functions.
     """
@@ -1094,7 +1094,11 @@ def main(config, args):
                         fn_map_full.update(fn_map)
 
         if len(sections) == 0:
-            fail(f'no sections for target: {target}')
+            if target == 'lua':
+                fail(f'no sections for target: {target} (this usually means'
+                     + ' "luajit" was not found by scripts/lua2dox_filter)')
+            else:
+                fail(f'no sections for target: {target}')
         if len(sections) > len(CONFIG[target]['section_order']):
             raise RuntimeError(
                 'found new modules "{}"; update the "section_order" map'.format(