4 files changed, 25 insertions, 6 deletions
diff --git a/core/os/keyboard.cpp b/core/os/keyboard.cpp
index e0231b818f..5183b77cb1 100644
--- a/core/os/keyboard.cpp
+++ b/core/os/keyboard.cpp
@@ -63,12 +63,15 @@ static const _KeyCodeText _keycodes[] = {
 	{Key::CTRL                  ,"Ctrl"},
 #if defined(MACOS_ENABLED)
 	{Key::META                  ,"Command"},
+	{Key::CMD_OR_CTRL           ,"Command"},
 	{Key::ALT                   ,"Option"},
 #elif defined(WINDOWS_ENABLED)
 	{Key::META                  ,"Windows"},
+	{Key::CMD_OR_CTRL           ,"Ctrl"},
 	{Key::ALT                   ,"Alt"},
 #else
 	{Key::META                  ,"Meta"},
+	{Key::CMD_OR_CTRL           ,"Ctrl"},
 	{Key::ALT                   ,"Alt"},
 #endif
 	{Key::CAPSLOCK              ,"CapsLock"},
diff --git a/core/os/keyboard.h b/core/os/keyboard.h
index 389baee915..c78fa2a631 100644
--- a/core/os/keyboard.h
+++ b/core/os/keyboard.h
@@ -65,6 +65,11 @@ enum class Key {
 	SHIFT = SPECIAL | 0x15,
 	CTRL = SPECIAL | 0x16,
 	META = SPECIAL | 0x17,
+#if defined(MACOS_ENABLED)
+	CMD_OR_CTRL = META,
+#else
+	CMD_OR_CTRL = CTRL,
+#endif
 	ALT = SPECIAL | 0x18,
 	CAPSLOCK = SPECIAL | 0x19,
 	NUMLOCK = SPECIAL | 0x1A,
diff --git a/core/os/os.cpp b/core/os/os.cpp
index c6fa8d307b..86469852e3 100644
--- a/core/os/os.cpp
+++ b/core/os/os.cpp
@@ -203,16 +203,26 @@ uint64_t OS::get_embedded_pck_offset() const {
 }
 
 // Helper function to ensure that a dir name/path will be valid on the OS
-String OS::get_safe_dir_name(const String &p_dir_name, bool p_allow_dir_separator) const {
+String OS::get_safe_dir_name(const String &p_dir_name, bool p_allow_paths) const {
+	String safe_dir_name = p_dir_name;
 	Vector<String> invalid_chars = String(": * ? \" < > |").split(" ");
-	if (p_allow_dir_separator) {
+	if (p_allow_paths) {
 		// Dir separators are allowed, but disallow ".." to avoid going up the filesystem
 		invalid_chars.push_back("..");
+		safe_dir_name = safe_dir_name.replace("\\", "/").strip_edges();
 	} else {
 		invalid_chars.push_back("/");
+		invalid_chars.push_back("\\");
+		safe_dir_name = safe_dir_name.strip_edges();
+
+		// These directory names are invalid.
+		if (safe_dir_name == ".") {
+			safe_dir_name = "dot";
+		} else if (safe_dir_name == "..") {
+			safe_dir_name = "twodots";
+		}
 	}
 
-	String safe_dir_name = p_dir_name.replace("\\", "/").strip_edges();
 	for (int i = 0; i < invalid_chars.size(); i++) {
 		safe_dir_name = safe_dir_name.replace(invalid_chars[i], "-");
 	}
diff --git a/core/os/os.h b/core/os/os.h
index 3c0c05f575..436a83eae3 100644
--- a/core/os/os.h
+++ b/core/os/os.h
@@ -131,7 +131,7 @@ public:
 	void print_rich(const char *p_format, ...) _PRINTF_FORMAT_ATTRIBUTE_2_3;
 	void printerr(const char *p_format, ...) _PRINTF_FORMAT_ATTRIBUTE_2_3;
 
-	virtual String get_stdin_string(bool p_block = true) = 0;
+	virtual String get_stdin_string() = 0;
 
 	virtual Error get_entropy(uint8_t *r_buffer, int p_bytes) = 0; // Should return cryptographically-safe random bytes.
 
@@ -167,7 +167,8 @@ public:
 
 	virtual bool has_environment(const String &p_var) const = 0;
 	virtual String get_environment(const String &p_var) const = 0;
-	virtual bool set_environment(const String &p_var, const String &p_value) const = 0;
+	virtual void set_environment(const String &p_var, const String &p_value) const = 0;
+	virtual void unset_environment(const String &p_var) const = 0;
 
 	virtual String get_name() const = 0;
 	virtual String get_distribution_name() const = 0;
@@ -237,7 +238,7 @@ public:
 
 	virtual uint64_t get_embedded_pck_offset() const;
 
-	String get_safe_dir_name(const String &p_dir_name, bool p_allow_dir_separator = false) const;
+	String get_safe_dir_name(const String &p_dir_name, bool p_allow_paths = false) const;
 	virtual String get_godot_dir_name() const;
 
 	virtual String get_data_path() const;