diff --git a/include/commands.h b/include/commands.h
index 5c87be51..69ab1380 100644
--- a/include/commands.h
+++ b/include/commands.h
@@ -3,19 +3,21 @@
 #include <stdbool.h>
 #include "config.h"
 
+typedef enum  cmd_status {
+	CMD_SUCCESS,
+	CMD_FAILURE,
+	CMD_DEFER,
+} sway_cmd(char *criteria, int argc, char **argv);
+
 struct cmd_handler {
-	char *command;
-	enum  cmd_status {
-		CMD_SUCCESS,
-		CMD_FAILURE,
-		CMD_DEFER,
-	} (*handle)(int argc, char **argv);
+	const char*command;
+	sway_cmd  *handle;
 };
 
 enum cmd_status handle_command(char *command);
 // Handles commands during config
 enum cmd_status config_command(char *command);
 
-void remove_view_from_scratchpad();
+void remove_view_from_scratchpad(swayc_t *view);
 
 #endif
diff --git a/include/config.h b/include/config.h
index 676218c8..04db3e5c 100644
--- a/include/config.h
+++ b/include/config.h
@@ -63,6 +63,10 @@ bool load_config(const char *file);
 bool read_config(FILE *file, bool is_active);
 char *do_var_replacement(char *str);
 
+// Find workspace_output from config by workspace or output name
+struct workspace_output *wsop_find_workspace(const char *);
+struct workspace_output *wsop_find_output(const char *);
+
 extern struct sway_config *config;
 
 #endif
diff --git a/include/container.h b/include/container.h
index a9b95229..b164af95 100644
--- a/include/container.h
+++ b/include/container.h
@@ -2,29 +2,25 @@
 #define _SWAY_CONTAINER_H
 #include <wlc/wlc.h>
 typedef struct sway_container swayc_t;
-
 #include "layout.h"
 
-enum swayc_types{
-	C_ROOT,
-	C_OUTPUT,
-	C_WORKSPACE,
-	C_CONTAINER,
-	C_VIEW,
-	// Keep last
-	C_TYPES,
+enum swayc_types {
+	C_ROOT      = 1 << 0,
+	C_OUTPUT    = 1 << 1,
+	C_WORKSPACE = 1 << 2,
+	C_CONTAINER = 1 << 3,
+	C_VIEW      = 1 << 4,
+	C_TYPES     = 5,
 };
 
-
-enum swayc_layouts{
-	L_NONE,
-	L_HORIZ,
-	L_VERT,
-	L_STACKED,
-	L_TABBED,
-	L_FLOATING,
-	// Keep last
-	L_LAYOUTS,
+enum swayc_layouts {
+	L_NONE     = 1 << 0,
+	L_HORIZ    = 1 << 1,
+	L_VERT     = 1 << 2,
+	L_STACKED  = 1 << 3,
+	L_TABBED   = 1 << 4,
+	L_FLOATING = 1 << 5,
+	L_LAYOUTS  = 6,
 };
 
 struct sway_container {
@@ -35,13 +31,16 @@ struct sway_container {
 
 	// Not including borders or margins
 	double width, height;
+	double x, y;
 
 	// Used for setting floating geometry
 	int desired_width, desired_height;
 
-	double x, y;
+	enum visibility_mask {
+		INVISIBLE = false,
+		VISIBLE = true,
+	} visible;
 
-	bool visible;
 	bool is_floating;
 	bool is_focused;
 
@@ -56,70 +55,120 @@ struct sway_container {
 	struct sway_container *focused;
 };
 
-enum visibility_mask {
-	VISIBLE = 1
-};
-
-// Container Creation
+// swayc Creation
 
+/* Creates and returns new, or an already created output.
+ * If it creates a new output, it also creates a workspace using
+ * `new_workspace(outputname, NULL);` */
 swayc_t *new_output(wlc_handle handle);
+
+/* Creates workspace with given name, under given output.
+ * If workspace with that name already exists, returns that workspace
+ * If name is NULL, it will choose a name automatically.
+ * If output is NULL, it will choose an output automatically. */
 swayc_t *new_workspace(swayc_t *output, const char *name);
+
 // Creates container Around child (parent child) -> (parent (container child))
 swayc_t *new_container(swayc_t *child, enum swayc_layouts layout);
+
 // Creates view as a sibling of current focused container, or as child of a workspace
 swayc_t *new_view(swayc_t *sibling, wlc_handle handle);
+
 // Creates view as a new floating view which is in the active workspace
 swayc_t *new_floating_view(wlc_handle handle);
 
 // Container Destroying
-
+// Destroys output and moves workspaces to another output
 swayc_t *destroy_output(swayc_t *output);
+
 // Destroys workspace if empty and returns parent pointer, else returns NULL
 swayc_t *destroy_workspace(swayc_t *workspace);
+
 // Destroyes container and all parent container if they are empty, returns
 // topmost non-empty parent. returns NULL otherwise
 swayc_t *destroy_container(swayc_t *container);
+
 // Destroys view and all empty parent containers. return topmost non-empty
 // parent
 swayc_t *destroy_view(swayc_t *view);
 
-// Container Lookup
+// Container Mapping and testing functions
+typedef bool swayc_test_func(swayc_t *view, void *data);
+typedef void swayc_map_func(swayc_t *view, void *data);
+
+// Returns the first swayc that matches test()
+swayc_t *swayc_by_test_r(swayc_t *root, swayc_test_func test, void *data);
+swayc_t *swayc_by_test(swayc_test_func test, void *data);
+
+// Calls func for all children.
+void swayc_map_r(swayc_t *root, swayc_map_func func, void *data);
+void swayc_map(swayc_map_func func, void *data);
+
+
+// Call func on container if test passes
+void swayc_map_by_test_r(swayc_t *root,
+		swayc_map_func func, swayc_test_func test,
+		void *funcdata, void *testdata);
+void swayc_map_by_test(
+		swayc_map_func func, swayc_test_func test,
+		void *funcdata, void *testdata);
+
+// Map functions
+swayc_map_func set_gaps;
+swayc_map_func add_gaps;
+
+// Test functions
+// generic swayc tests
+swayc_test_func test_name;
+swayc_test_func test_name_regex;
+swayc_test_func test_layout;
+swayc_test_func test_type;
+swayc_test_func test_visibility;
+swayc_test_func test_handle;
+
+// C_VIEW tests
+// See wlc_view_*_bit enums
+swayc_test_func test_view_state;
+swayc_test_func test_view_type;
+swayc_test_func test_view_title;
+swayc_test_func test_view_class;
+swayc_test_func test_view_appid;
+swayc_test_func test_view_title_regex;
+swayc_test_func test_view_class_regex;
+swayc_test_func test_view_appid_regex;
+
+// functions for test_*_regex
+void *compile_regex(const char *regex);
+void free_regex(void *);
+
+// these take a NULL terminated array of test_list struct.
+struct test_list { swayc_test_func *test; void *data ; };
+swayc_test_func test_and;
+swayc_test_func test_or;
 
-swayc_t *swayc_by_test(swayc_t *container, bool (*test)(swayc_t *view, void *data), void *data);
 swayc_t *swayc_parent_by_type(swayc_t *container, enum swayc_types);
 swayc_t *swayc_parent_by_layout(swayc_t *container, enum swayc_layouts);
 // Follow focused until type/layout
 swayc_t *swayc_focus_by_type(swayc_t *container, enum swayc_types);
 swayc_t *swayc_focus_by_layout(swayc_t *container, enum swayc_layouts);
 
-
-swayc_t *swayc_by_handle(wlc_handle handle);
-swayc_t *swayc_by_name(const char *name);
 swayc_t *swayc_active_output(void);
 swayc_t *swayc_active_workspace(void);
 swayc_t *swayc_active_workspace_for(swayc_t *view);
 
 // Container information
-
-bool swayc_is_fullscreen(swayc_t *view);
-bool swayc_is_active(swayc_t *view);
-// Is `parent` the parent of `child`
+// if `parent` is the parent of `child`
 bool swayc_is_parent_of(swayc_t *parent, swayc_t *child);
-// Is `child` a child of `parent`
+// If `child` is a child of `parent`
 bool swayc_is_child_of(swayc_t *child, swayc_t *parent);
 // Return gap of specified container
 int swayc_gap(swayc_t *container);
 
-// Mapping functions
+bool swayc_is_fullscreen(swayc_t *view);
+bool swayc_is_active(swayc_t *view);
 
-void container_map(swayc_t *, void (*f)(swayc_t *, void *), void *);
-
-// Mappings
-void set_view_visibility(swayc_t *view, void *data);
-// Set or add to gaps
-void set_gaps(swayc_t *view, void *amount);
-void add_gaps(swayc_t *view, void *amount);
 
+// Specialized mapping functions
 void update_visibility(swayc_t *container);
 
 #endif
diff --git a/include/stringop.h b/include/stringop.h
index dde50f13..6e80e729 100644
--- a/include/stringop.h
+++ b/include/stringop.h
@@ -19,7 +19,7 @@ void free_argv(int argc, char **argv);
 char *code_strchr(const char *string, char delimiter);
 char *code_strstr(const char *haystack, const char *needle);
 int unescape_string(char *string);
-char *join_args(char **argv, int argc);
+char *join_args(int argc, char **argv);
 char *join_list(list_t *list, char *separator);
 
 char *strdup(const char *);
diff --git a/include/workspace.h b/include/workspace.h
index 7343b055..3a63ea38 100644
--- a/include/workspace.h
+++ b/include/workspace.h
@@ -7,13 +7,17 @@
 
 extern char *prev_workspace_name;
 
-char *workspace_next_name(void);
-swayc_t *workspace_create(const char*);
+// Search for available workspace name on output from config
+const char *workspace_output_open_name(swayc_t *output);
+// Search for any available workspace name
+const char *workspace_next_name(void);
+
+
 swayc_t *workspace_by_name(const char*);
 void workspace_switch(swayc_t*);
-swayc_t *workspace_output_next();
-swayc_t *workspace_next();
-swayc_t *workspace_output_prev();
-swayc_t *workspace_prev();
+swayc_t *workspace_output_next(void);
+swayc_t *workspace_next(void);
+swayc_t *workspace_output_prev(void);
+swayc_t *workspace_prev(void);
 
 #endif
diff --git a/sway/commands.c b/sway/commands.c
index e79746ae..3ed0c8db 100644
--- a/sway/commands.c
+++ b/sway/commands.c
@@ -21,6 +21,35 @@
 swayc_t *sp_view;
 int sp_index = 0;
 
+// Commands
+static sway_cmd cmd_bindsym;
+static sway_cmd cmd_orientation;
+static sway_cmd cmd_exec;
+static sway_cmd cmd_exec_always;
+static sway_cmd cmd_exit;
+static sway_cmd cmd_floating;
+static sway_cmd cmd_floating_mod;
+static sway_cmd cmd_focus;
+static sway_cmd cmd_focus_follows_mouse;
+static sway_cmd cmd_for_window;
+static sway_cmd cmd_fullscreen;
+static sway_cmd cmd_gaps;
+static sway_cmd cmd_kill;
+static sway_cmd cmd_layout;
+static sway_cmd cmd_log_colors;
+static sway_cmd cmd_mode;
+static sway_cmd cmd_move;
+static sway_cmd cmd_output;
+static sway_cmd cmd_reload;
+static sway_cmd cmd_resize;
+static sway_cmd cmd_scratchpad;
+static sway_cmd cmd_set;
+static sway_cmd cmd_split;
+static sway_cmd cmd_splith;
+static sway_cmd cmd_splitv;
+static sway_cmd cmd_workspace;
+static sway_cmd cmd_ws_auto_back_and_forth;
+
 static struct modifier_key {
 	char *name;
 	uint32_t mod;
@@ -94,7 +123,7 @@ static int bindsym_sort(const void *_lbind, const void *_rbind) {
 	return (rbind->keys->length + rmod) - (lbind->keys->length + lmod);
 }
 
-static enum cmd_status cmd_bindsym(int argc, char **argv) {
+enum cmd_status cmd_bindsym(char *criteria, int argc, char **argv) {
 	if (!checkarg(argc, "bindsym", EXPECTED_MORE_THAN, 1)
 			|| !config->reading) {
 		return CMD_FAILURE;
@@ -103,7 +132,7 @@ static enum cmd_status cmd_bindsym(int argc, char **argv) {
 	struct sway_binding *binding = malloc(sizeof(struct sway_binding));
 	binding->keys = create_list();
 	binding->modifiers = 0;
-	binding->command = join_args(argv + 1, argc - 1);
+	binding->command = join_args(argc - 1, argv + 1);
 
 	list_t *split = split_string(argv[0], "+");
 	int i;
@@ -144,7 +173,7 @@ static enum cmd_status cmd_bindsym(int argc, char **argv) {
 	return CMD_SUCCESS;
 }
 
-static enum cmd_status cmd_exec_always(int argc, char **argv) {
+enum cmd_status cmd_exec_always(char *criteria, int argc, char **argv) {
 	if (!checkarg(argc, "exec_always", EXPECTED_MORE_THAN, 0)) {
 		return CMD_FAILURE;
 	}
@@ -160,7 +189,7 @@ static enum cmd_status cmd_exec_always(int argc, char **argv) {
 	}
 	/* Child process */
 	if (pid == 0) {
-		char *args = join_args(argv, argc);
+		char *args = join_args(argc, argv);
 		sway_log(L_DEBUG, "Executing %s", args);
 		execl("/bin/sh", "sh", "-c", args, (char *)NULL);
 		/* Execl doesnt return unless failure */
@@ -172,17 +201,17 @@ static enum cmd_status cmd_exec_always(int argc, char **argv) {
 	return CMD_SUCCESS;
 }
 
-static enum cmd_status cmd_exec(int argc, char **argv) {
+enum cmd_status cmd_exec(char *criteria, int argc, char **argv) {
 	if (!config->active) {
 		return CMD_DEFER;
 	}
 	if (config->reloading) {
-		char *args = join_args(argv, argc);
+		char *args = join_args(argc, argv);
 		sway_log(L_DEBUG, "Ignoring 'exec %s' due to reload", args);
 		free(args);
 		return CMD_SUCCESS;
 	}
-	return cmd_exec_always(argc, argv);
+	return cmd_exec_always(criteria, argc, argv);
 }
 
 static void kill_views(swayc_t *container, void *data) {
@@ -191,18 +220,19 @@ static void kill_views(swayc_t *container, void *data) {
 	}
 }
 
-static enum cmd_status cmd_exit(int argc, char **argv) {
+enum cmd_status cmd_exit(char *criteria, int argc, char **argv) {
+	(void) argv;
 	if (!checkarg(argc, "exit", EXPECTED_EQUAL_TO, 0)
 			|| config->reading || !config->active) {
 		return CMD_FAILURE;
 	}
 	// Close all views
-	container_map(&root_container, kill_views, NULL);
+	swayc_map(kill_views, NULL);
 	sway_terminate();
 	return CMD_SUCCESS;
 }
 
-static enum cmd_status cmd_floating(int argc, char **argv) {
+enum cmd_status cmd_floating(char *criteria, int argc, char **argv) {
 	if (!checkarg(argc, "floating", EXPECTED_EQUAL_TO, 1)
 			|| config->reading || !config->active) {
 		return CMD_FAILURE;
@@ -264,7 +294,7 @@ static enum cmd_status cmd_floating(int argc, char **argv) {
 	return CMD_SUCCESS;
 }
 
-static enum cmd_status cmd_floating_mod(int argc, char **argv) {
+enum cmd_status cmd_floating_mod(char *criteria, int argc, char **argv) {
 	if (!checkarg(argc, "floating_modifier", EXPECTED_EQUAL_TO, 1)
 			|| !config->reading) {
 		return CMD_FAILURE;
@@ -289,7 +319,7 @@ static enum cmd_status cmd_floating_mod(int argc, char **argv) {
 	return CMD_SUCCESS;
 }
 
-static enum cmd_status cmd_focus(int argc, char **argv) {
+enum cmd_status cmd_focus(char *criteria, int argc, char **argv) {
 	static int floating_toggled_index = 0;
 	static int tiled_toggled_index = 0;
 	if (!checkarg(argc, "focus", EXPECTED_EQUAL_TO, 1)
@@ -347,7 +377,7 @@ static enum cmd_status cmd_focus(int argc, char **argv) {
 	return CMD_SUCCESS;
 }
 
-static enum cmd_status cmd_focus_follows_mouse(int argc, char **argv) {
+enum cmd_status cmd_focus_follows_mouse(char *criteria, int argc, char **argv) {
 	if (!checkarg(argc, "focus_follows_mouse", EXPECTED_EQUAL_TO, 1)) {
 		return CMD_FAILURE;
 	}
@@ -356,6 +386,21 @@ static enum cmd_status cmd_focus_follows_mouse(int argc, char **argv) {
 	return CMD_SUCCESS;
 }
 
+static void debug_for_window(swayc_t *view, void *data) {
+	layout_log(view, 0);
+}
+
+enum cmd_status cmd_for_window(char *criteria, int argc, char **argv) {
+	if (!checkarg(argc, "for_window", EXPECTED_AT_LEAST, 1)) {
+		return CMD_FAILURE;
+	}
+	//TODO
+	void *re = compile_regex(argv[0]);
+	swayc_map_by_test(debug_for_window, test_view_title_regex, NULL, re);
+	free_regex(re);
+	return CMD_FAILURE;
+}
+
 static void hide_view_in_scratchpad(swayc_t *sp_view) {
 	if(sp_view == NULL) {
 		return;
@@ -372,7 +417,7 @@ static void hide_view_in_scratchpad(swayc_t *sp_view) {
 	set_focused_container(container_under_pointer());
 }
 
-static enum cmd_status cmd_mode(int argc, char **argv) {
+enum cmd_status cmd_mode(char *criteria, int argc, char **argv) {
 	if (!checkarg(argc, "move", EXPECTED_AT_LEAST, 1)) {
 		return CMD_FAILURE;
 	}
@@ -381,7 +426,7 @@ static enum cmd_status cmd_mode(int argc, char **argv) {
 		return CMD_FAILURE;
 	}
 
-	char *mode_name = join_args(argv, argc - mode_make);
+	char *mode_name = join_args(argc - mode_make, argv);
 	struct sway_mode *mode = NULL;
 	// Find mode
 	int i, len = config->modes->length;
@@ -411,7 +456,7 @@ static enum cmd_status cmd_mode(int argc, char **argv) {
 	return CMD_SUCCESS;
 }
 
-static enum cmd_status cmd_move(int argc, char **argv) {
+enum cmd_status cmd_move(char *criteria, int argc, char **argv) {
 	if (!checkarg(argc, "move", EXPECTED_AT_LEAST, 1)
 			|| config->reading || !config->active) {
 		return CMD_FAILURE;
@@ -444,11 +489,7 @@ static enum cmd_status cmd_move(int argc, char **argv) {
 			// move "container to workspace number x"
 			ws_name = argv[4];
 		}
-
-		swayc_t *ws = workspace_by_name(ws_name);
-		if (ws == NULL) {
-			ws = workspace_create(ws_name);
-		}
+		swayc_t *ws = new_workspace(NULL, ws_name);
 		move_container_to(view, get_focused_container(ws));
 	} else if (strcasecmp(argv[0], "scratchpad") == 0) {
 		if (view->type != C_CONTAINER && view->type != C_VIEW) {
@@ -482,7 +523,7 @@ static enum cmd_status cmd_move(int argc, char **argv) {
 	return CMD_SUCCESS;
 }
 
-static enum cmd_status cmd_orientation(int argc, char **argv) {
+enum cmd_status cmd_orientation(char *criteria, int argc, char **argv) {
 	if (!checkarg(argc, "orientation", EXPECTED_EQUAL_TO, 1)
 			|| !config->reading) {
 		return CMD_FAILURE;
@@ -499,7 +540,7 @@ static enum cmd_status cmd_orientation(int argc, char **argv) {
 	return CMD_SUCCESS;
 }
 
-static enum cmd_status cmd_output(int argc, char **argv) {
+enum cmd_status cmd_output(char *criteria, int argc, char **argv) {
 	if (!checkarg(argc, "output", EXPECTED_AT_LEAST, 1)) {
 		return CMD_FAILURE;
 	}
@@ -564,7 +605,7 @@ static enum cmd_status cmd_output(int argc, char **argv) {
 	return CMD_SUCCESS;
 }
 
-static enum cmd_status cmd_gaps(int argc, char **argv) {
+enum cmd_status cmd_gaps(char *criteria, int argc, char **argv) {
 	if (!checkarg(argc, "gaps", EXPECTED_AT_LEAST, 1)) {
 		return CMD_FAILURE;
 	}
@@ -698,15 +739,14 @@ static enum cmd_status cmd_gaps(int argc, char **argv) {
 			top = &root_container;
 		}
 		int top_gap = top->gaps;
-		container_map(top, method == SET ? set_gaps : add_gaps, &amount);
+		swayc_map_r(top, method == SET ? set_gaps : add_gaps, &amount);
 		top->gaps = top_gap;
 		arrange_windows(top, -1, -1);
 	}
-
 	return CMD_SUCCESS;
 }
 
-static enum cmd_status cmd_kill(int argc, char **argv) {
+enum cmd_status cmd_kill(char *criteria, int argc, char **argv) {
 	if (config->reading || !config->active) {
 		return CMD_FAILURE;
 	}
@@ -715,7 +755,7 @@ static enum cmd_status cmd_kill(int argc, char **argv) {
 	return CMD_SUCCESS;
 }
 
-static enum cmd_status cmd_layout(int argc, char **argv) {
+enum cmd_status cmd_layout(char *criteria, int argc, char **argv) {
 	if (!checkarg(argc, "layout", EXPECTED_MORE_THAN, 0)
 			|| config->reading || !config->active) {
 		return CMD_FAILURE;
@@ -741,7 +781,7 @@ static enum cmd_status cmd_layout(int argc, char **argv) {
 	return CMD_SUCCESS;
 }
 
-static enum cmd_status cmd_reload(int argc, char **argv) {
+enum cmd_status cmd_reload(char *criteria, int argc, char **argv) {
 	if (!checkarg(argc, "reload", EXPECTED_EQUAL_TO, 0)
 			|| config->reading
 			|| !load_config(NULL)) {
@@ -751,7 +791,7 @@ static enum cmd_status cmd_reload(int argc, char **argv) {
 	return CMD_SUCCESS;
 }
 
-static enum cmd_status cmd_resize(int argc, char **argv) {
+enum cmd_status cmd_resize(char *criteria, int argc, char **argv) {
 	if (!checkarg(argc, "resize", EXPECTED_AT_LEAST, 3)
 			|| config->reading || !config->active) {
 		return CMD_FAILURE;
@@ -781,7 +821,7 @@ static enum cmd_status cmd_resize(int argc, char **argv) {
 	return CMD_SUCCESS;
 }
 
-static swayc_t *fetch_view_from_scratchpad() {
+static swayc_t *fetch_view_from_scratchpad(void) {
 	if (sp_index >= scratchpad->length) {
 		sp_index = 0;
 	}
@@ -826,7 +866,7 @@ void remove_view_from_scratchpad(swayc_t *view) {
 	}
 }
 
-static enum cmd_status cmd_scratchpad(int argc, char **argv) {
+enum cmd_status cmd_scratchpad(char *criteria, int argc, char **argv) {
 	if (!checkarg(argc, "scratchpad", EXPECTED_EQUAL_TO, 1)
 			|| config->reading || !config->active) {
 		return CMD_FAILURE;
@@ -860,7 +900,7 @@ static int compare_set(const void *_l, const void *_r) {
 	return strlen((*r)->name) - strlen((*l)->name);
 }
 
-static enum cmd_status cmd_set(int argc, char **argv) {
+enum cmd_status cmd_set(char *criteria, int argc, char **argv) {
 	if (!checkarg(argc, "set", EXPECTED_AT_LEAST, 2)
 			|| !config->reading) {
 		return CMD_FAILURE;
@@ -883,11 +923,11 @@ static enum cmd_status cmd_set(int argc, char **argv) {
 		list_add(config->symbols, var);
 		list_sort(config->symbols, compare_set);
 	}
-	var->value = join_args(argv + 1, argc - 1);
+	var->value = join_args(argc - 1, argv + 1);
 	return CMD_SUCCESS;
 }
 
-static enum cmd_status _do_split(int argc, char **argv, int layout) {
+static enum cmd_status _do_split(char *criteria, int argc, char **argv, int layout) {
 	char *name = layout == L_VERT  ? "splitv" :
 		layout == L_HORIZ ? "splith" : "split";
 	if (!checkarg(argc, name, EXPECTED_EQUAL_TO, 0)
@@ -919,16 +959,16 @@ static enum cmd_status _do_split(int argc, char **argv, int layout) {
 	return CMD_SUCCESS;
 }
 
-static enum cmd_status cmd_split(int argc, char **argv) {
+enum cmd_status cmd_split(char *criteria, int argc, char **argv) {
 	if (!checkarg(argc, "split", EXPECTED_EQUAL_TO, 1)
 			|| config->reading || !config->active) {
 		return CMD_FAILURE;
 	}
 
 	if (strcasecmp(argv[0], "v") == 0 || strcasecmp(argv[0], "vertical") == 0) {
-		_do_split(argc - 1, argv + 1, L_VERT);
+		_do_split(criteria, argc - 1, argv + 1, L_VERT);
 	} else if (strcasecmp(argv[0], "h") == 0 || strcasecmp(argv[0], "horizontal") == 0) {
-		_do_split(argc - 1, argv + 1, L_HORIZ);
+		_do_split(criteria, argc - 1, argv + 1, L_HORIZ);
 	} else {
 		sway_log(L_ERROR, "Invalid split command (expected either horiziontal or vertical).");
 		return CMD_FAILURE;
@@ -936,15 +976,15 @@ static enum cmd_status cmd_split(int argc, char **argv) {
 	return CMD_SUCCESS;
 }
 
-static enum cmd_status cmd_splitv(int argc, char **argv) {
-	return _do_split(argc, argv, L_VERT);
+enum cmd_status cmd_splitv(char *criteria, int argc, char **argv) {
+	return _do_split(criteria, argc, argv, L_VERT);
 }
 
-static enum cmd_status cmd_splith(int argc, char **argv) {
-	return _do_split(argc, argv, L_HORIZ);
+enum cmd_status cmd_splith(char *criteria, int argc, char **argv) {
+	return _do_split(criteria, argc, argv, L_HORIZ);
 }
 
-static enum cmd_status cmd_log_colors(int argc, char **argv) {
+enum cmd_status cmd_log_colors(char *criteria, int argc, char **argv) {
 	if (!checkarg(argc, "log_colors", EXPECTED_EQUAL_TO, 1)
 			|| !config->reading) {
 		return CMD_FAILURE;
@@ -960,7 +1000,7 @@ static enum cmd_status cmd_log_colors(int argc, char **argv) {
 	return CMD_SUCCESS;
 }
 
-static enum cmd_status cmd_fullscreen(int argc, char **argv) {
+enum cmd_status cmd_fullscreen(char *criteria, int argc, char **argv) {
 	if (!checkarg(argc, "fullscreen", EXPECTED_AT_LEAST, 0)
 			|| config->reading || !config->active) {
 		return CMD_FAILURE;
@@ -980,7 +1020,7 @@ static enum cmd_status cmd_fullscreen(int argc, char **argv) {
 	return CMD_SUCCESS;
 }
 
-static enum cmd_status cmd_workspace(int argc, char **argv) {
+enum cmd_status cmd_workspace(char *criteria, int argc, char **argv) {
 	if (!checkarg(argc, "workspace", EXPECTED_AT_LEAST, 1)) {
 		return CMD_FAILURE;
 	}
@@ -989,28 +1029,7 @@ static enum cmd_status cmd_workspace(int argc, char **argv) {
 		if (config->reading || !config->active) {
 			return CMD_DEFER;
 		}
-		// Handle workspace next/prev
-		swayc_t *ws = NULL;
-		if (strcasecmp(argv[0], "next") == 0) {
-			ws = workspace_next();
-		} else if (strcasecmp(argv[0], "prev") == 0) {
-			ws = workspace_prev();
-		} else if (strcasecmp(argv[0], "next_on_output") == 0) {
-			ws = workspace_output_next();
-		} else if (strcasecmp(argv[0], "prev_on_output") == 0) {
-			ws = workspace_output_prev();
-		} else if (strcasecmp(argv[0], "back_and_forth") == 0) {
-			if (prev_workspace_name) {
-				if (!(ws = workspace_by_name(prev_workspace_name))) {
-					ws = workspace_create(prev_workspace_name);
-				}
-			}
-		} else {
-			if (!(ws= workspace_by_name(argv[0]))) {
-				ws = workspace_create(argv[0]);
-			}
-		}
-		workspace_switch(ws);
+		workspace_switch(new_workspace(NULL, argv[0]));
 	} else {
 		if (strcasecmp(argv[1], "output") == 0) {
 			if (!checkarg(argc, "workspace", EXPECTED_EQUAL_TO, 3)) {
@@ -1021,15 +1040,12 @@ static enum cmd_status cmd_workspace(int argc, char **argv) {
 			wso->workspace = strdup(argv[0]);
 			wso->output = strdup(argv[2]);
 			list_add(config->workspace_outputs, wso);
-			if (!config->reading) {
-				// TODO: Move workspace to output. (dont do so when reloading)
-			}
 		}
 	}
 	return CMD_SUCCESS;
 }
 
-static enum cmd_status cmd_ws_auto_back_and_forth(int argc, char **argv) {
+enum cmd_status cmd_ws_auto_back_and_forth(char *criteria, int argc, char **argv) {
 	if (!checkarg(argc, "workspace_auto_back_and_forth", EXPECTED_EQUAL_TO, 1)) {
 		return CMD_FAILURE;
 	}
@@ -1044,7 +1060,7 @@ static enum cmd_status cmd_ws_auto_back_and_forth(int argc, char **argv) {
 }
 
 /* Keep alphabetized */
-static struct cmd_handler handlers[] = {
+static const struct cmd_handler handlers[] = {
 	{ "bindsym", cmd_bindsym },
 	{ "default_orientation", cmd_orientation },
 	{ "exec", cmd_exec },
@@ -1054,6 +1070,7 @@ static struct cmd_handler handlers[] = {
 	{ "floating_modifier", cmd_floating_mod },
 	{ "focus", cmd_focus },
 	{ "focus_follows_mouse", cmd_focus_follows_mouse },
+	{ "for_window", cmd_for_window },
 	{ "fullscreen", cmd_fullscreen },
 	{ "gaps", cmd_gaps },
 	{ "kill", cmd_kill },
@@ -1090,6 +1107,7 @@ static struct cmd_handler *find_handler(char *line) {
 enum cmd_status handle_command(char *exec) {
 	sway_log(L_INFO, "Handling command '%s'", exec);
 	int argc;
+	char *criteria = NULL;
 	char **argv = split_args(exec, &argc);
 	enum cmd_status status = CMD_FAILURE;
 	struct cmd_handler *handler;
@@ -1097,7 +1115,7 @@ enum cmd_status handle_command(char *exec) {
 		return status;
 	}
 	if ((handler = find_handler(argv[0])) == NULL
-			|| (status = handler->handle(argc - 1, argv + 1)) != CMD_SUCCESS) {
+			|| (status = handler->handle(criteria, argc - 1, argv + 1)) != CMD_SUCCESS) {
 		sway_log(L_ERROR, "Command failed: %s", argv[0]);
 	}
 	free_argv(argc, argv);
@@ -1108,6 +1126,7 @@ enum cmd_status config_command(char *exec) {
 	sway_log(L_INFO, "handling config command '%s'", exec);
 	int argc;
 	char **argv = split_args(exec, &argc);
+	char *criteria = NULL;
 	enum cmd_status status = CMD_FAILURE;
 	struct cmd_handler *handler;
 	if (!argc) {
@@ -1127,7 +1146,7 @@ enum cmd_status config_command(char *exec) {
 		for (; i < e; ++i) {
 			argv[i] = do_var_replacement(argv[i]);
 		}
-		status = handler->handle(argc - 1, argv + 1);
+		status = handler->handle(criteria, argc - 1, argv + 1);
 		if (status == CMD_FAILURE) {
 			sway_log(L_ERROR, "Config load failed for line `%s'", exec);
 		} else if (status == CMD_DEFER) {
diff --git a/sway/config.c b/sway/config.c
index 23d6ac0d..da92030e 100644
--- a/sway/config.c
+++ b/sway/config.c
@@ -286,3 +286,28 @@ char *do_var_replacement(char *str) {
 	}
 	return str;
 }
+
+struct workspace_output *wsop_find_workspace(const char *name) {
+	int i, len = config->workspace_outputs->length;
+	struct workspace_output *wsop;
+	for (i = 0; i < len; ++i) {
+		wsop = config->workspace_outputs->items[i];
+		if (strcasecmp(wsop->workspace, name) == 0) {
+			return wsop;
+		}
+	}
+	return NULL;
+}
+
+struct workspace_output *wsop_find_output(const char *name) {
+	int i, len = config->workspace_outputs->length;
+	struct workspace_output *wsop;
+	for (i = 0; i < len; ++i) {
+		wsop = config->workspace_outputs->items[i];
+		if (strcasecmp(wsop->output, name) == 0) {
+			return wsop;
+		}
+	}
+	return NULL;
+}
+
diff --git a/sway/container.c b/sway/container.c
index ef0e6c55..baf84378 100644
--- a/sway/container.c
+++ b/sway/container.c
@@ -1,6 +1,7 @@
 #include <stdlib.h>
 #include <stdbool.h>
 #include <strings.h>
+#include <pcre.h>
 #include "config.h"
 #include "container.h"
 #include "workspace.h"
@@ -53,26 +54,30 @@ static void free_swayc(swayc_t *cont) {
 // New containers
 
 swayc_t *new_output(wlc_handle handle) {
-	const struct wlc_size *size = wlc_output_get_resolution(handle);
 	const char *name = wlc_output_get_name(handle);
+	int i, len;
+
 	// Find current outputs to see if this already exists
-	{
-		int i, len = root_container.children->length;
+	if (name) {
+		len = root_container.children->length;
 		for (i = 0; i < len; ++i) {
 			swayc_t *op = root_container.children->items[i];
-			const char *op_name = op->name;
-			if (op_name && name && strcmp(op_name, name) == 0) {
-				sway_log(L_DEBUG, "restoring output %lu:%s", handle, op_name);
+			if (strcmp(op->name, name) == 0) {
+				sway_log(L_DEBUG, "restoring output %lu:%s", handle, op->name);
 				return op;
 			}
 		}
+	} else {
+		sway_log(L_ERROR, "Output has no given name");
+		return NULL;
 	}
 
-	sway_log(L_DEBUG, "Added output %lu:%s", handle, name);
+	sway_log(L_DEBUG, "Adding output %lu:%s", handle, name);
 
+	// Find output config
 	struct output_config *oc = NULL;
-	int i;
-	for (i = 0; i < config->output_configs->length; ++i) {
+	len = config->output_configs->length;
+	for (i = 0; i < len; ++i) {
 		oc = config->output_configs->items[i];
 		if (strcasecmp(name, oc->name) == 0) {
 			sway_log(L_DEBUG, "Matched output config for %s", name);
@@ -86,77 +91,88 @@ swayc_t *new_output(wlc_handle handle) {
 	}
 
 	swayc_t *output = new_swayc(C_OUTPUT);
-	if (oc && oc->width != -1 && oc->height != -1) {
-		output->width = oc->width;
-		output->height = oc->height;
-		struct wlc_size new_size = { .w = oc->width, .h = oc->height };
-		wlc_output_set_resolution(handle, &new_size);
-	} else {
-		output->width = size->w;
-		output->height = size->h;
-	}
 	output->handle = handle;
 	output->name = name ? strdup(name) : NULL;
-	
-	// Find position for it
-	if (oc && oc->x != -1 && oc->y != -1) {
-		sway_log(L_DEBUG, "Set %s position to %d, %d", name, oc->x, oc->y);
-		output->x = oc->x;
-		output->y = oc->y;
-	} else {
-		int x = 0;
-		for (i = 0; i < root_container.children->length; ++i) {
-			swayc_t *c = root_container.children->items[i];
-			if (c->type == C_OUTPUT) {
-				if (c->width + c->x > x) {
-					x = c->width + c->x;
+
+	if (oc) {
+		// Set output width/height
+		if (oc->width > 0 && oc->height > 0) {
+			output->width = oc->width;
+			output->height = oc->height;
+			struct wlc_size geo = { .w = oc->width, .h = oc->height};
+			wlc_output_set_resolution(handle, &geo);
+		} else {
+			struct wlc_size geo = *wlc_output_get_resolution(handle);
+			output->width = geo.w;
+			output->height = geo.h;
+		}
+		// find position in config or find where it should go
+		// TODO more intelligent method
+		if (oc->x > 0 && oc->y > 0) {
+			output->x = oc->x;
+			output->y = oc->y;
+		} else {
+			unsigned int x = 0;
+			len = root_container.children->length;
+			for (i = 0; i < len; ++i) {
+				swayc_t *c = root_container.children->items[i];
+				if (c->type == C_OUTPUT) {
+					unsigned int cx = c->width + c->x;
+					if (cx > x) {
+						x = cx;
+					}
 				}
 			}
+			output->x = x;
 		}
-		output->x = x;
 	}
-
+	// Add as child to root
 	add_child(&root_container, output);
 
-	// Create workspace
-	char *ws_name = NULL;
-	if (name) {
-		for (i = 0; i < config->workspace_outputs->length; ++i) {
-			struct workspace_output *wso = config->workspace_outputs->items[i];
-			if (strcasecmp(wso->output, name) == 0) {
-				sway_log(L_DEBUG, "Matched workspace to output: %s for %s", wso->workspace, wso->output);
-				// Check if any other workspaces are using this name
-				if (workspace_by_name(wso->workspace)) {
-					sway_log(L_DEBUG, "But it's already taken");
-					break;
-				}
-				sway_log(L_DEBUG, "So we're going to use it");
-				ws_name = strdup(wso->workspace);
-				break;
-			}
-		}
-	}
-	if (!ws_name) {
-		ws_name = workspace_next_name();
-	}
-
 	// create and initilize default workspace
-	swayc_t *ws = new_workspace(output, ws_name);
+	swayc_t *ws = new_workspace(output, NULL);
 	ws->is_focused = true;
 
-	free(ws_name);
-	
 	return output;
 }
 
 swayc_t *new_workspace(swayc_t *output, const char *name) {
-	if (!ASSERT_NONNULL(output)) {
-		return NULL;
+	swayc_t *ws = NULL;
+	struct workspace_output *wsop;
+	if (name) {
+		// Find existing workspace with same name.
+		// or workspace found by special name
+		if ((ws = workspace_by_name(name))) {
+			return ws;
+		}
+		// Find matching output from config
+		if (!output) {
+			if ((wsop = wsop_find_workspace(name))) {
+				int i, len = root_container.children->length;
+				for (i = 0; i < len; ++i) {
+					swayc_t *op = root_container.children->items[i];
+					if (strcasecmp(op->name, wsop->output) == 0) {
+						output = op;
+						goto find_wsop_end;
+					}
+				}
+			}
+			// Set output to active_output if there is no output.
+			output = swayc_active_output();
+			find_wsop_end:;
+		}
+	} else {
+		// No name or output, use active_output
+		if (!output) {
+			output = swayc_active_output();
+		}
+		// search for available output name
+		if (!(name = workspace_output_open_name(output))) {
+			// otherwise just use simple next name
+			name = workspace_next_name();
+		}
 	}
-	sway_log(L_DEBUG, "Added workspace %s for output %u", name, (unsigned int)output->handle);
 	swayc_t *workspace = new_swayc(C_WORKSPACE);
-
-	// TODO: default_layout
 	if (config->default_layout != L_NONE) {
 		workspace->layout = config->default_layout;
 	} else if (config->default_orientation != L_NONE) {
@@ -374,7 +390,7 @@ swayc_t *destroy_view(swayc_t *view) {
 // Container lookup
 
 
-swayc_t *swayc_by_test(swayc_t *container, bool (*test)(swayc_t *view, void *data), void *data) {
+swayc_t *swayc_by_test_r(swayc_t *container, swayc_test_func test, void *data) {
 	if (!container->children) {
 		return NULL;
 	}
@@ -393,7 +409,7 @@ swayc_t *swayc_by_test(swayc_t *container, bool (*test)(swayc_t *view, void *dat
 		if (test(child, data)) {
 			return child;
 		} else {
-			swayc_t *res = swayc_by_test(child, test, data);
+			swayc_t *res = swayc_by_test_r(child, test, data);
 			if (res) {
 				return res;
 			}
@@ -401,17 +417,192 @@ swayc_t *swayc_by_test(swayc_t *container, bool (*test)(swayc_t *view, void *dat
 	}
 	return NULL;
 }
+swayc_t *swayc_by_test(swayc_test_func test, void *data) {
+	return swayc_by_test_r(&root_container, test, data);
+}
 
-static bool test_name(swayc_t *view, void *data) {
-	if (!view && !view->name) {
-		return false;
+void swayc_map_r(swayc_t *container, swayc_map_func f, void *data) {
+	if (container) {
+		f(container, data);
+		int i;
+		if (container->children)  {
+			for (i = 0; i < container->children->length; ++i) {
+				swayc_t *child = container->children->items[i];
+				swayc_map_r(child, f, data);
+			}
+		}
+		if (container->floating) {
+			for (i = 0; i < container->floating->length; ++i) {
+				swayc_t *child = container->floating->items[i];
+				swayc_map_r(child, f, data);
+			}
+		}
 	}
-	return strcmp(view->name, data) == 0;
+}
+void swayc_map(swayc_map_func f, void *data) {
+	swayc_map_r(&root_container, f, data);
 }
 
-swayc_t *swayc_by_name(const char *name) {
-	return swayc_by_test(&root_container, test_name, (void *)name);
+void swayc_map_by_test_r(swayc_t *container,
+		swayc_map_func func, swayc_test_func test,
+		void *funcdata, void *testdata) {
+	if (container) {
+		if (test(container, testdata)) {
+			func(container, funcdata);
+		}
+		int i;
+		if (container->children)  {
+			for (i = 0; i < container->children->length; ++i) {
+				swayc_t *child = container->children->items[i];
+				swayc_map_by_test_r(child, func, test, funcdata, testdata);
+			}
+		}
+		if (container->floating) {
+			for (i = 0; i < container->floating->length; ++i) {
+				swayc_t *child = container->floating->items[i];
+				swayc_map_by_test_r(child, func, test, funcdata, testdata);
+			}
+		}
+	}
 }
+void swayc_map_by_test(
+		swayc_map_func func, swayc_test_func test,
+		void *funcdata, void *testdata) {
+	swayc_map_by_test_r(&root_container, func, test, funcdata, testdata);
+}
+
+
+
+// Map functions
+void set_gaps(swayc_t *view, void *_data) {
+	int *data = _data;
+	if (view->type == C_WORKSPACE || view->type == C_VIEW) {
+		view->gaps = *data;
+	}
+}
+
+void add_gaps(swayc_t *view, void *_data) {
+	int *data = _data;
+	if (view->type == C_WORKSPACE || view->type == C_VIEW) {
+		if ((view->gaps += *data) < 0) {
+			view->gaps = 0;
+		}
+	}
+}
+
+// Test functions
+bool test_name(swayc_t *view, void *data) {
+	return view->name && strcmp(view->name, data) == 0;
+}
+
+// test_name_regex
+struct test_name_regex {
+	pcre *reg;
+	pcre_extra *regext;
+};
+
+void *compile_regex(const char *pattern) {
+	struct test_name_regex *regex = malloc(sizeof *regex);
+	const char *error;
+	int erroffset;
+	if (!(regex->reg = pcre_compile(pattern, 0, &error, &erroffset, NULL))) {
+		sway_log(L_ERROR, "Regex compilation failed:%s:%s", pattern, error);
+		free(regex);
+		return NULL;
+	}
+	regex->regext = pcre_study(regex->reg, 0, &error);
+	if (error) {
+		sway_log(L_DEBUG, "Regex study failed:%s:%s", pattern, error);
+	}
+	return regex;
+}
+
+void free_regex(void *_regex) {
+	struct test_name_regex *regex = _regex;
+	pcre_free(regex->reg);
+	pcre_free_study(regex->regext);
+	free(regex);
+}
+
+static bool exec_regex(const char *pattern, struct test_name_regex *regex) {
+	int ovector[300];
+	return 0 < pcre_exec(regex->reg, regex->regext, pattern,
+			strlen(pattern), 0, 0, ovector, 300);
+}
+
+bool test_name_regex(swayc_t *view, void *data) {
+	return view->name && exec_regex(view->name, data);
+}
+bool test_layout(swayc_t *view, void *data) {
+	return view->layout & *(enum swayc_layouts *)data;
+}
+bool test_type(swayc_t *view, void *data) {
+	return view->layout & *(enum swayc_types *)data;
+}
+bool test_visibility(swayc_t *view, void *data) {
+	return view->visible == *(bool *)data;
+}
+bool test_handle(swayc_t *view, void *data) {
+	return view->handle == *(wlc_handle *)data;
+}
+
+// C_VIEW tests
+bool test_view_state(swayc_t *view, void *data) {
+	return view->type == C_VIEW
+		&& wlc_view_get_state(view->handle) & *(int *)data;
+}
+bool test_view_type(swayc_t *view, void *data) {
+	return view->type == C_VIEW
+		&& wlc_view_get_type(view->handle) & *(int *)data;
+}
+bool test_view_title(swayc_t *view, void *data) {
+	return view->type == C_VIEW
+		&& strcmp(view->name, data) == 0;
+}
+bool test_view_class(swayc_t *view, void *data) {
+	return view->type == C_VIEW
+		&& strcmp(wlc_view_get_class(view->handle), data) == 0;
+}
+bool test_view_appid(swayc_t *view, void *data) {
+	return view->type == C_VIEW
+		&& strcmp(wlc_view_get_app_id(view->handle), data) == 0;
+}
+bool test_view_title_regex(swayc_t *view, void *data) {
+	return view->type == C_VIEW
+		&& exec_regex(view->name, data);
+}
+bool test_view_class_regex(swayc_t *view, void *data) {
+	return view->type == C_VIEW
+		&& exec_regex(wlc_view_get_class(view->handle), data);
+}
+bool test_view_appid_regex(swayc_t *view, void *data) {
+	return view->type == C_VIEW
+		&& exec_regex(wlc_view_get_app_id(view->handle), data);
+}
+
+// Fancy test combiners
+bool test_and(swayc_t *view, void *data) {
+	struct test_list *list = data;
+	while (list->test) {
+		if (!list->test(view, list->data)) {
+			return false;
+		}
+		++list;
+	}
+	return true;
+}
+bool test_or(swayc_t *view, void *data) {
+	struct test_list *list = data;
+	while (list->test) {
+		if (list->test(view, list->data)) {
+			return true;
+		}
+		++list;
+	}
+	return false;
+}
+
+// Focus|parent lookup
 
 swayc_t *swayc_parent_by_type(swayc_t *container, enum swayc_types type) {
 	if (!ASSERT_NONNULL(container)) {
@@ -465,42 +656,6 @@ swayc_t *swayc_focus_by_layout(swayc_t *container, enum swayc_layouts layout) {
 	return container;
 }
 
-
-static swayc_t *_swayc_by_handle_helper(wlc_handle handle, swayc_t *parent) {
-	if (!parent || !parent->children) {
-		return NULL;
-	}
-	int i, len;
-	swayc_t **child;
-	if (parent->type == C_WORKSPACE) {
-		len = parent->floating->length;
-		child = (swayc_t **)parent->floating->items;
-		for (i = 0; i < len; ++i, ++child) {
-			if ((*child)->handle == handle) {
-				return *child;
-			}
-		}
-	}
-
-	len = parent->children->length;
-	child = (swayc_t**)parent->children->items;
-	for (i = 0; i < len; ++i, ++child) {
-		if ((*child)->handle == handle) {
-			return *child;
-		} else {
-			swayc_t *res;
-			if ((res = _swayc_by_handle_helper(handle, *child))) {
-				return res;
-			}
-		}
-	}
-	return NULL;
-}
-
-swayc_t *swayc_by_handle(wlc_handle handle) {
-	return _swayc_by_handle_helper(handle, &root_container);
-}
-
 swayc_t *swayc_active_output(void) {
 	return root_container.focused;
 }
@@ -533,11 +688,13 @@ swayc_t *swayc_active_workspace_for(swayc_t *cont) {
 // Container information
 
 bool swayc_is_fullscreen(swayc_t *view) {
-	return view && view->type == C_VIEW && (wlc_view_get_state(view->handle) & WLC_BIT_FULLSCREEN);
+	return view && view->type == C_VIEW
+		&& wlc_view_get_state(view->handle) & WLC_BIT_FULLSCREEN;
 }
 
 bool swayc_is_active(swayc_t *view) {
-	return view && view->type == C_VIEW && (wlc_view_get_state(view->handle) & WLC_BIT_ACTIVATED);
+	return view && view->type == C_VIEW
+		&& wlc_view_get_state(view->handle) & WLC_BIT_ACTIVATED;
 }
 
 bool swayc_is_parent_of(swayc_t *parent, swayc_t *child) {
@@ -566,25 +723,6 @@ int swayc_gap(swayc_t *container) {
 
 // Mapping
 
-void container_map(swayc_t *container, void (*f)(swayc_t *view, void *data), void *data) {
-	if (container) {
-		f(container, data);
-		int i;
-		if (container->children)  {
-			for (i = 0; i < container->children->length; ++i) {
-				swayc_t *child = container->children->items[i];
-				container_map(child, f, data);
-			}
-		}
-		if (container->floating) {
-			for (i = 0; i < container->floating->length; ++i) {
-				swayc_t *child = container->floating->items[i];
-				container_map(child, f, data);
-			}
-		}
-	}
-}
-
 void update_visibility_output(swayc_t *container, wlc_handle output) {
 	// Inherit visibility
 	swayc_t *parent = container->parent;
@@ -653,24 +791,3 @@ void update_visibility(swayc_t *container) {
 	}
 }
 
-void set_gaps(swayc_t *view, void *_data) {
-	int *data = _data;
-	if (!ASSERT_NONNULL(view)) {
-		return;
-	}
-	if (view->type == C_WORKSPACE || view->type == C_VIEW) {
-		view->gaps = *data;
-	}
-}
-
-void add_gaps(swayc_t *view, void *_data) {
-	int *data = _data;
-	if (!ASSERT_NONNULL(view)) {
-		return;
-	}
-	if (view->type == C_WORKSPACE || view->type == C_VIEW) {
-		if ((view->gaps += *data) < 0) {
-			view->gaps = 0;
-		}
-	}
-}
diff --git a/sway/handlers.c b/sway/handlers.c
index 096df53c..1a8138f8 100644
--- a/sway/handlers.c
+++ b/sway/handlers.c
@@ -126,7 +126,7 @@ static void handle_output_destroyed(wlc_handle output) {
 
 static void handle_output_resolution_change(wlc_handle output, const struct wlc_size *from, const struct wlc_size *to) {
 	sway_log(L_DEBUG, "Output %u resolution changed to %d x %d", (unsigned int)output, to->w, to->h);
-	swayc_t *c = swayc_by_handle(output);
+	swayc_t *c = swayc_by_test(test_handle, &output);
 	if (!c) return;
 	c->width = to->w;
 	c->height = to->h;
@@ -134,7 +134,7 @@ static void handle_output_resolution_change(wlc_handle output, const struct wlc_
 }
 
 static void handle_output_focused(wlc_handle output, bool focus) {
-	swayc_t *c = swayc_by_handle(output);
+	swayc_t *c = swayc_by_test(test_handle, &output);
 	// if for some reason this output doesnt exist, create it.
 	if (!c) {
 		handle_output_created(output);
@@ -152,7 +152,7 @@ static bool handle_view_created(wlc_handle handle) {
 
 	// Get parent container, to add view in
 	if (parent) {
-		focused = swayc_by_handle(parent);
+		focused = swayc_by_test(test_handle, &parent);
 	}
 	if (!focused || focused->type == C_OUTPUT) {
 		focused = get_focused_container(&root_container);
@@ -221,7 +221,7 @@ static bool handle_view_created(wlc_handle handle) {
 
 static void handle_view_destroyed(wlc_handle handle) {
 	sway_log(L_DEBUG, "Destroying window %lu", handle);
-	swayc_t *view = swayc_by_handle(handle);
+	swayc_t *view = swayc_by_test(test_handle, &handle);
 
 	// destroy views by type
 	switch (wlc_view_get_type(handle)) {
@@ -258,7 +258,7 @@ static void handle_view_geometry_request(wlc_handle handle, const struct wlc_geo
 	// If the view is floating, then apply the geometry.
 	// Otherwise save the desired width/height for the view.
 	// This will not do anything for the time being as WLC improperly sends geometry requests
-	swayc_t *view = swayc_by_handle(handle);
+	swayc_t *view = swayc_by_test(test_handle, &handle);
 	if (view) {
 		view->desired_width = geometry->size.w;
 		view->desired_height = geometry->size.h;
@@ -274,7 +274,7 @@ static void handle_view_geometry_request(wlc_handle handle, const struct wlc_geo
 }
 
 static void handle_view_state_request(wlc_handle view, enum wlc_view_state_bit state, bool toggle) {
-	swayc_t *c = swayc_by_handle(view);
+	swayc_t *c = swayc_by_test(test_handle, &view);
 	switch (state) {
 	case WLC_BIT_FULLSCREEN:
 		// i3 just lets it become fullscreen
diff --git a/sway/ipc.c b/sway/ipc.c
index abf2ed0c..86518bc6 100644
--- a/sway/ipc.c
+++ b/sway/ipc.c
@@ -207,7 +207,7 @@ void ipc_client_handle_command(struct ipc_client *client) {
 	case IPC_GET_WORKSPACES:
 	{
 		json_object *workspaces = json_object_new_array();
-		container_map(&root_container, ipc_get_workspaces_callback, workspaces);
+		swayc_map(ipc_get_workspaces_callback, workspaces);
 		const char *json_string = json_object_to_json_string(workspaces);
 		ipc_send_reply(client, json_string, (uint32_t) strlen(json_string));
 		json_object_put(workspaces); // free
@@ -216,7 +216,7 @@ void ipc_client_handle_command(struct ipc_client *client) {
 	case IPC_GET_OUTPUTS:
 	{
 		json_object *outputs = json_object_new_array();
-		container_map(&root_container, ipc_get_outputs_callback, outputs);
+		swayc_map(ipc_get_outputs_callback, outputs);
 		const char *json_string = json_object_to_json_string(outputs);
 		ipc_send_reply(client, json_string, (uint32_t) strlen(json_string));
 		json_object_put(outputs); // free
diff --git a/sway/stringop.c b/sway/stringop.c
index 191e40c8..54faf74c 100644
--- a/sway/stringop.c
+++ b/sway/stringop.c
@@ -258,7 +258,7 @@ int unescape_string(char *string) {
 	return len - shift;
 }
 
-char *join_args(char **argv, int argc) {
+char *join_args(int argc, char **argv) {
 	int len = 0, i;
 	for (i = 0; i < argc; ++i) {
 		len += strlen(argv[i]) + 1;
diff --git a/sway/workspace.c b/sway/workspace.c
index 658f79bc..80141f71 100644
--- a/sway/workspace.c
+++ b/sway/workspace.c
@@ -15,7 +15,26 @@
 
 char *prev_workspace_name = NULL;
 
-char *workspace_next_name(void) {
+static swayc_t *workspace_by_name_only(const char *name);
+
+const char *workspace_output_open_name(swayc_t *output) {
+	struct workspace_output *wsop;
+	int i, len = config->workspace_outputs->length;
+	// Search config for output
+	for (i = 0; i < len; ++i) {
+		wsop = config->workspace_outputs->items[i];
+		// Find matching outputs
+		if (strcasecmp(wsop->output, output->name)) {
+			// Check if workspace is available and use that name
+			if (!workspace_by_name(wsop->workspace)) {
+				return wsop->workspace;
+			}
+		}
+	}
+	return NULL;
+}
+
+const char *workspace_next_name(void) {
 	sway_log(L_DEBUG, "Workspace: Generating new name");
 	int i;
 	int l = 1;
@@ -25,42 +44,29 @@ char *workspace_next_name(void) {
 
 	for (i = 0; i < mode->bindings->length; ++i) {
 		struct sway_binding *binding = mode->bindings->items[i];
-		const char* command = binding->command;
-		list_t *args = split_string(command, " ");
-
-		if (strcmp("workspace", args->items[0]) == 0 && args->length > 1) {
-			sway_log(L_DEBUG, "Got valid workspace command for target: '%s'", (char *)args->items[1]);
-			char* target = malloc(strlen(args->items[1]) + 1);
-			strcpy(target, args->items[1]);
-			while (*target == ' ' || *target == '\t')
-				target++;
-
-			// Make sure that the command references an actual workspace
-			// not a command about workspaces
-			if (strcmp(target, "next") == 0 ||
-				strcmp(target, "prev") == 0 ||
-				strcmp(target, "next_on_output") == 0 ||
-				strcmp(target, "prev_on_output") == 0 ||
-				strcmp(target, "number") == 0 ||
-				strcmp(target, "back_and_forth") == 0 ||
-				strcmp(target, "current") == 0)
-			{
-				free_flat_list(args);
+		const char *command = binding->command;
+		const char *ws = "workspace";
+		const int wslen = sizeof("workspace") - 1;
+		if (strncmp(ws, command, wslen) == 0) {
+			command += wslen;
+			// Skip whitespace
+			command += strspn(command, whitespace);
+			// make sure its not a special command
+			if (strcmp(command, "next") == 0
+					|| strcmp(command, "prev") == 0
+					|| strcmp(command, "next_on_output") == 0
+					|| strcmp(command, "prev_on_output") == 0
+					|| strcmp(command, "number") == 0
+					|| strcmp(command, "back_and_forth") == 0
+					|| strcmp(command, "current") == 0
+					// Or if it already exists
+					|| workspace_by_name_only(command)) {
 				continue;
+			} else {
+				// otherwise we found it
+				return command;
 			}
-
-			// Make sure that the workspace doesn't already exist
-			if (workspace_by_name(target)) {
-				free_flat_list(args);
-				continue;
-			}
-
-			free_flat_list(args);
-
-			sway_log(L_DEBUG, "Workspace: Found free name %s", target);
-			return target;
 		}
-		free_flat_list(args);
 	}
 	// As a fall back, get the current number of active workspaces
 	// and return that + 1 for the next workspace's name
@@ -75,55 +81,40 @@ char *workspace_next_name(void) {
 	return name;
 }
 
-swayc_t *workspace_create(const char* name) {
-	swayc_t *parent;
-	// Search for workspace<->output pair
-	int i, e = config->workspace_outputs->length;
-	for (i = 0; i < e; ++i) {
-		struct workspace_output *wso = config->workspace_outputs->items[i];
-		if (strcasecmp(wso->workspace, name) == 0)
-		{
-			// Find output to use if it exists
-			e = root_container.children->length;
-			for (i = 0; i < e; ++i) {
-				parent = root_container.children->items[i];
-				if (strcmp(parent->name, wso->output) == 0) {
-					return new_workspace(parent, name);
-				}
+swayc_t *workspace_by_name_only(const char *name) {
+	int i, len = root_container.children->length;
+	for (i = 0; i < len; ++i) {
+		swayc_t *op = root_container.children->items[i];
+		int i, len = op->children->length;
+		for (i = 0; i < len; ++i) {
+			swayc_t *ws = op->children->items[i];
+			if (strcasecmp(ws->name, name) == 0) {
+				return ws;
 			}
-			break;
 		}
 	}
-	// Otherwise create a new one
-	parent = get_focused_container(&root_container);
-	parent = swayc_parent_by_type(parent, C_OUTPUT);
-	return new_workspace(parent, name);
-}
-
-static bool _workspace_by_name(swayc_t *view, void *data) {
-	return (view->type == C_WORKSPACE) &&
-		   (strcasecmp(view->name, (char *) data) == 0);
+	return NULL;
 }
 
 swayc_t *workspace_by_name(const char* name) {
 	if (strcmp(name, "prev") == 0) {
 		return workspace_prev();
-	}
-	else if (strcmp(name, "prev_on_output") == 0) {
+	} else if (!strcmp(name, "prev_on_output")) {
 		return workspace_output_prev();
-	}
-	else if (strcmp(name, "next") == 0) {
+	} else if (!strcmp(name, "next")) {
 		return workspace_next();
-	}
-	else if (strcmp(name, "next_on_output") == 0) {
+	} else if (!strcmp(name, "next_on_output")) {
 		return workspace_output_next();
-	}
-	else if (strcmp(name, "current") == 0) {
+	} else if (!strcmp(name, "current")) {
 		return swayc_active_workspace();
+	} else if (!strcmp(name, "back_and_forth")) {
+		if (prev_workspace_name) {
+			name = prev_workspace_name;
+		} else { // If there is no prev workspace name. just return current
+			return swayc_active_workspace();
+		}
 	}
-	else {
-		return swayc_by_test(&root_container, _workspace_by_name, (void *) name);
-	}
+	return workspace_by_name_only(name);
 }
 
 /**
@@ -181,19 +172,19 @@ swayc_t *workspace_prev_next_impl(swayc_t *workspace, bool next) {
 	return NULL;
 }
 
-swayc_t *workspace_output_next() {
+swayc_t *workspace_output_next(void) {
 	return workspace_output_prev_next_impl(swayc_active_output(), true);
 }
 
-swayc_t *workspace_next() {
+swayc_t *workspace_next(void) {
 	return workspace_prev_next_impl(swayc_active_workspace(), true);
 }
 
-swayc_t *workspace_output_prev() {
+swayc_t *workspace_output_prev(void) {
 	return workspace_output_prev_next_impl(swayc_active_output(), false);
 }
 
-swayc_t *workspace_prev() {
+swayc_t *workspace_prev(void) {
 	return workspace_prev_next_impl(swayc_active_workspace(), false);
 }
 
@@ -202,17 +193,17 @@ void workspace_switch(swayc_t *workspace) {
 		return;
 	}
 	swayc_t *active_ws = swayc_active_workspace();
-	if (config->auto_back_and_forth && active_ws == workspace && prev_workspace_name) {
-		swayc_t *new_ws = workspace_by_name(prev_workspace_name);
-		workspace = new_ws ? new_ws : workspace_create(prev_workspace_name);
+	// set workspace to prev_workspace
+	if (config->auto_back_and_forth && active_ws == workspace) {
+		workspace = new_workspace(NULL, "back_and_forth");
 	}
 
+	// set prev workspace name
 	if (!prev_workspace_name
 			|| (strcmp(prev_workspace_name, active_ws->name)
 				&& active_ws != workspace)) {
 		free(prev_workspace_name);
-		prev_workspace_name = malloc(strlen(active_ws->name)+1);
-		strcpy(prev_workspace_name, active_ws->name);
+		prev_workspace_name = strdup(active_ws->name);
 	}
 
 	sway_log(L_DEBUG, "Switching to workspace %p:%s", workspace, workspace->name);