Add .sh to orphan check regex

main.cpp

@@ -97,7 +97,7 @@ int main(int argc, char *argv[])
                     + "French + Polish = " + std::to_string(GlobalConstants::LANGUAGE_FR) + "+" + std::to_string(GlobalConstants::LANGUAGE_PL) + " = " + std::to_string(GlobalConstants::LANGUAGE_FR | GlobalConstants::LANGUAGE_PL);
 
     // Create help text for --check-orphans
-    std::string orphans_regex_default = ".*\\.(zip|exe|bin|dmg|old|deb|tar\\.gz|pkg)$"; // Limit to files with these extensions (".old" is for renamed older version files)
+    std::string orphans_regex_default = ".*\\.(zip|exe|bin|dmg|old|deb|tar\\.gz|pkg|sh)$"; // Limit to files with these extensions (".old" is for renamed older version files)
     std::string check_orphans_text = "Check for orphaned files (files found on local filesystem that are not found on GOG servers). Sets regular expression filter (Perl syntax) for files to check. If no argument is given then the regex defaults to '" + orphans_regex_default + "'";
 
     // Help text for subdir options