patch 9.1.0831: 'findexpr' can't be used as lambad or Funcref

Problem:  'findexpr' can't be used for lambads
          (Justin Keyes)
Solution: Replace the findexpr option with the findfunc option
          (Yegappan Lakshmanan)

related: #15905
closes: #15976

Signed-off-by: Yegappan Lakshmanan <yegappan@yahoo.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/cmdexpand.c b/src/cmdexpand.c
index 3862d69..7e53114 100644
--- a/src/cmdexpand.c
+++ b/src/cmdexpand.c
@@ -50,7 +50,7 @@
 	    && xp->xp_context != EXPAND_FILES
 	    && xp->xp_context != EXPAND_FILES_IN_PATH
 	    && xp->xp_context != EXPAND_FILETYPE
-	    && xp->xp_context != EXPAND_FINDEXPR
+	    && xp->xp_context != EXPAND_FINDFUNC
 	    && xp->xp_context != EXPAND_HELP
 	    && xp->xp_context != EXPAND_KEYMAP
 	    && xp->xp_context != EXPAND_OLD_SETTING
@@ -1419,7 +1419,7 @@
 
 	// For help tags the translation is done in find_help_tags().
 	// For a tag pattern starting with "/" no translation is needed.
-	if (context == EXPAND_FINDEXPR
+	if (context == EXPAND_FINDFUNC
 		|| context == EXPAND_HELP
 		|| context == EXPAND_COLORS
 		|| context == EXPAND_COMPILER
@@ -2140,7 +2140,7 @@
 	case CMD_sfind:
 	case CMD_tabfind:
 	    if (xp->xp_context == EXPAND_FILES)
-		xp->xp_context = *get_findexpr() != NUL ? EXPAND_FINDEXPR
+		xp->xp_context = *get_findfunc() != NUL ? EXPAND_FINDFUNC
 							: EXPAND_FILES_IN_PATH;
 	    break;
 	case CMD_cd:
@@ -2853,10 +2853,10 @@
 	    }
     }
 
-    if (xp->xp_context == EXPAND_FINDEXPR)
+    if (xp->xp_context == EXPAND_FINDFUNC)
     {
 #ifdef FEAT_EVAL
-	ret = expand_findexpr(pat, matches, numMatches);
+	ret = expand_findfunc(pat, matches, numMatches);
 #endif
     }
     else
@@ -3122,7 +3122,7 @@
     if (xp->xp_context == EXPAND_FILES
 	    || xp->xp_context == EXPAND_DIRECTORIES
 	    || xp->xp_context == EXPAND_FILES_IN_PATH
-	    || xp->xp_context == EXPAND_FINDEXPR
+	    || xp->xp_context == EXPAND_FINDFUNC
 	    || xp->xp_context == EXPAND_DIRS_IN_CDPATH)
 	return expand_files_and_dirs(xp, pat, matches, numMatches, flags,
 								options);