From ef5eab2263099cabb678b86bd1f8f261d7d5139d Mon Sep 17 00:00:00 2001
From: fgsfds <pvt.fgsfds@gmail.com>
Date: Mon, 8 Jun 2020 07:44:03 +0300
Subject: [PATCH] fix sys_file_extension for folders that start with dot

---
 src/pc/platform.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/pc/platform.c b/src/pc/platform.c
index fb4b08ec..0aea20fa 100644
--- a/src/pc/platform.c
+++ b/src/pc/platform.c
@@ -51,7 +51,10 @@ int sys_strcasecmp(const char *s1, const char *s2) {
 
 const char *sys_file_extension(const char *fname) {
     const char *dot = strrchr(fname, '.');
-    if (!dot || !dot[1]) return NULL;
+    const char *sep = strrchr(fname, '/');
+    if (!sep) sep = strrchr(fname, '\\');
+    if (!dot || !dot[1]) return NULL; // no dot
+    if (dot <= sep + 1) return NULL; // dot is before the last separator or right after it (e.g. /.local)
     return dot + 1;
 }