vim-patch:9.0.1520: completion for option name includes all bool options (#23518)

Problem:    Completion for option name includes all bool options.
Solution:   Do not recognize the "noinv" prefix.  Prefix "no" or "inv" when
            appropriate.

048d9d2521

Co-authored-by: Bram Moolenaar <Bram@vim.org>

src/nvim/ex_cmds_defs.h

@@ -222,11 +222,18 @@ struct exarg {
 #define EXFLAG_NR       0x02    // '#': number
 #define EXFLAG_PRINT    0x04    // 'p': print
 
+typedef enum {
+  XP_PREFIX_NONE,  ///< prefix not used
+  XP_PREFIX_NO,    ///< "no" prefix for bool option
+  XP_PREFIX_INV,   ///< "inv" prefix for bool option
+} xp_prefix_T;
+
 // used for completion on the command line
 struct expand {
   char *xp_pattern;             // start of item to expand
   int xp_context;               // type of expansion
   size_t xp_pattern_len;        // bytes in xp_pattern before cursor
+  xp_prefix_T xp_prefix;
   char *xp_arg;                 // completion function
   LuaRef xp_luaref;             // Ref to Lua completion function
   sctx_T xp_script_ctx;         // SCTX for completion function