docs(lua): change *lua-foo* -> *vim.foo*

scripts/gen_vimdoc.py

@@ -208,7 +208,7 @@ CONFIG = {
         'helptag_fmt': lambda name: (
             '*lua-vim*' if name.lower() == '_editor' else
             '*lua-vimscript*' if name.lower() == '_options' else
-            f'*lua-{name.lower()}*'),
+            f'*vim.{name.lower()}*'),
         'fn_helptag_fmt': lambda fstem, name: (
             f'*vim.opt:{name.split(":")[-1]}()*' if ':' in name and name.startswith('Option') else
             # Exclude fstem for methods
@@ -1160,6 +1160,10 @@ def main(doxygen_config, args):
                 if doc:
                     doc_list.append(doc)
 
+            # Can't use '.' in @defgroup, so convert to '--'
+            # "vim.json" => "vim-dot-json"
+            groupname = groupname.replace('-dot-', '.')
+
             section_docs[groupname] = "\n".join(doc_list)
 
         # Generate docs for all functions in the current module.

scripts/lua2dox.lua

@@ -416,6 +416,11 @@ function TLua2DoX_filter.filter(this, AppStamp, Filename)
 
             magic = table.concat(magic_split, ' ')
 
+            if magic_split[1] == 'defgroup' or magic_split[1] == 'addtogroup' then
+              -- Can't use '.' in defgroup, so convert to '--'
+              magic = magic:gsub('%.', '-dot-')
+            end
+
             outStream:writeln('/// @' .. magic)
             fn_magic = checkComment4fn(fn_magic, magic)
           end