patch 8.2.1343: Vim9: cannot find global function when using g:

Problem:    Vim9: cannot find global function when using g: when local
            function with the same name exists.
Solution:   Find global function when using g:.

Author: brammool

src/testdir/test_vim9_func.vim

@@ -161,6 +161,21 @@ def Test_nested_global_function()
   CheckScriptSuccess(lines)
 enddef
 
+def Test_global_local_function()
+  let lines =<< trim END
+      vim9script
+      def g:Func(): string
+          return 'global'
+      enddef
+      def Func(): string
+          return 'local'
+      enddef
+      assert_equal('global', g:Func())
+      assert_equal('local', Func())
+  END
+  CheckScriptSuccess(lines)
+enddef
+
 func TakesOneArg(arg)
   echo a:arg
 endfunc

src/userfunc.c

@@ -789,17 +789,18 @@ find_func_even_dead(char_u *name, int is_global, cctx_T *cctx)
 
     if (!is_global)
     {
-	char_u *after_script = NULL;
+	int	vim9script = in_vim9script();
+	char_u	*after_script = NULL;
 
-	if (in_vim9script())
+	if (vim9script)
 	{
 	    // Find script-local function before global one.
 	    func = find_func_with_sid(name, current_sctx.sc_sid);
 	    if (func != NULL)
 		return func;
 	}
 
-	if (!in_vim9script()
+	if (!vim9script
 		&& name[0] == K_SPECIAL
 		&& name[1] == KS_EXTRA
 		&& name[2] == KE_SNR)
@@ -815,7 +816,7 @@ find_func_even_dead(char_u *name, int is_global, cctx_T *cctx)
 	    else
 		after_script = NULL;
 	}
-	if (in_vim9script() || after_script != NULL)
+	if (vim9script || after_script != NULL)
 	{
 	    // Find imported function before global one.
 	    imported = find_imported(
@@ -2086,10 +2087,14 @@ call_func(
     if (error == FCERR_NONE && funcexe->evaluate)
     {
 	char_u *rfname = fname;
+	int	is_global = FALSE;
 
-	// Ignore "g:" before a function name.
+	// Skip "g:" before a function name.
 	if (fp == NULL && fname[0] == 'g' && fname[1] == ':')
+	{
+	    is_global = TRUE;
 	    rfname = fname + 2;
+	}
 
 	rettv->v_type = VAR_NUMBER;	// default rettv is number zero
 	rettv->vval.v_number = 0;
@@ -2101,7 +2106,7 @@ call_func(
 	     * User defined function.
 	     */
 	    if (fp == NULL)
-		fp = find_func(rfname, FALSE, NULL);
+		fp = find_func(rfname, is_global, NULL);
 
 	    // Trigger FuncUndefined event, may load the function.
 	    if (fp == NULL
@@ -2110,13 +2115,13 @@ call_func(
 		    && !aborting())
 	    {
 		// executed an autocommand, search for the function again
-		fp = find_func(rfname, FALSE, NULL);
+		fp = find_func(rfname, is_global, NULL);
 	    }
 	    // Try loading a package.
 	    if (fp == NULL && script_autoload(rfname, TRUE) && !aborting())
 	    {
 		// loaded a package, search for the function again
-		fp = find_func(rfname, FALSE, NULL);
+		fp = find_func(rfname, is_global, NULL);
 	    }
 	    if (fp == NULL)
 	    {
@@ -2125,7 +2130,7 @@ call_func(
 		// If using Vim9 script try not local to the script.
 		// TODO: should not do this if the name started with "s:".
 		if (p != NULL)
-		    fp = find_func(p, FALSE, NULL);
+		    fp = find_func(p, is_global, NULL);
 	    }
 
 	    if (fp != NULL && (fp->uf_flags & FC_DELETED))
@@ -2175,6 +2180,7 @@ call_func(
 	     */
 	    error = call_internal_func(fname, argcount, argvars, rettv);
 	}
+
 	/*
 	 * The function call (or "FuncUndefined" autocommand sequence) might
 	 * have been aborted by an error, an interrupt, or an explicitly thrown

src/version.c

@@ -754,6 +754,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1343,
 /**/
     1342,
 /**/