vim-patch:9.1.1331: Leaking memory with cmdcomplete()

Problem:  Leaking memory with cmdcomplete()
          (zeertzjq, after v9.1.1329)
Solution: free the memory (Girish Palya)

closes: vim/vim#17190

5c3d1e3258

Co-authored-by: Girish Palya <girishji@gmail.com>

runtime/doc/builtin.txt

@@ -1061,7 +1061,7 @@ clearmatches([{win}])                                           *clearmatches()*
                 Parameters: ~
                   • {win} (`integer?`)
 
-cmdcomplete_info([{what}])                                  *cmdcomplete_info()*
+cmdcomplete_info()                                          *cmdcomplete_info()*
 		Returns a |Dictionary| with information about cmdline
 		completion.  See |cmdline-completion|.
 		The items are:

src/nvim/cmdexpand.c

@@ -1065,6 +1065,7 @@ int showmatches(expand_T *xp, bool wildmenu)
 
   // Save cmdline before expansion
   if (ccline->cmdbuff != NULL) {
+    xfree(cmdline_orig);
     cmdline_orig = xstrnsave(ccline->cmdbuff, (size_t)ccline->cmdlen);
   }
 

src/nvim/eval.lua

@@ -1279,7 +1279,7 @@ M.funcs = {
     name = 'cmdcomplete_info',
     params = {},
     returns = 'table<string,any>',
-    signature = 'cmdcomplete_info([{what}])',
+    signature = 'cmdcomplete_info()',
   },
   col = {
     args = { 1, 2 },

src/nvim/ex_getln.c

@@ -1302,8 +1302,8 @@ static int command_line_execute(VimState *state, int key)
   }
 
   // Trigger CmdlineLeavePre autocommand
-  if (ccline.cmdfirstc != NUL && (s->c == '\n' || s->c == '\r' || s->c == K_KENTER
+  if (s->c == '\n' || s->c == '\r' || s->c == K_KENTER
-                                  || s->c == ESC || s->c == Ctrl_C)) {
+      || s->c == ESC || s->c == Ctrl_C) {
     trigger_cmd_autocmd(get_cmdline_type(), EVENT_CMDLINELEAVEPRE);
   }
 

test/old/testdir/test_autocmd.vim

@@ -1959,6 +1959,12 @@ func Test_Cmdline_Trigger()
   call assert_equal('', g:log)
   call feedkeys(":echo hello", "tx")
   call assert_equal('CmdlineLeavePre', g:log)
+  let g:count = 0
+  autocmd CmdlineLeavePre * let g:count += 1
+  call feedkeys(":let c = input('? ')\<cr>B\<cr>", "tx")
+  call assert_equal(2, g:count)
+  unlet! g:count
+  unlet! g:log
   bw!
 endfunc