Fix fs::RemoveRelativePathComponents for paths with a leading dot component

Previously, paths like ./worlds would be resolved to /worlds since the
leading dot was considered just as irrelevant as a dot in the middle of
the path.

diff --git a/src/filesys.cpp b/src/filesys.cpp
index b4c52ab793b8bb1bb5331285767b159e7bd917c9..c718a9689fc8bcde8dd522dd91564ad7cdbe9061 100644 (file)
--- a/src/filesys.cpp
+++ b/src/filesys.cpp
@@ -631,7 +631,7 @@ std::string RemoveRelativePathComponents(std::string path)
                std::string component = path.substr(component_start,
                                component_end - component_start);
                bool remove_this_component = false;
-               if(component == "."){
+               if(component == "." && component_start != 0){
                        remove_this_component = true;
                }
                else if(component == ".."){