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-rw-r--r--src/nvim/main.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/src/nvim/main.c b/src/nvim/main.c
index d4fbf8ce93..f27ebb2f67 100644
--- a/src/nvim/main.c
+++ b/src/nvim/main.c
@@ -250,6 +250,11 @@ int main(int argc, char **argv)
argv0 = argv[0];
+ if (!appname_is_valid()) {
+ os_errmsg("$NVIM_APPNAME is not a valid file name.\n");
+ exit(1);
+ }
+
if (argc > 1 && STRICMP(argv[1], "-ll") == 0) {
if (argc == 2) {
print_mainerr(err_arg_missing, argv[1]);