Add a new command 'move to workspace current'

Added a new command 'move to workspace current' which can be used
with criteria to move a window to the current workspace.

docs/userguide

@@ -1293,8 +1293,9 @@ You can also switch to the next and previous workspace with the commands
 workspace 1, 3, 4 and 9 and you want to cycle through them with a single key
 combination. To restrict those to the current output, use +workspace
 next_on_output+ and +workspace prev_on_output+. Similarly, you can use +move
-container to workspace next+ and +move container to workspace prev+ to move a
+container to workspace next+, +move container to workspace prev+ to move a
-container to the next/previous workspace.
+container to the next/previous workspace and +move container to workspace current+
+(the last one makes sense only when used with criteria).
 
 [[back_and_forth]]
 To switch back to the previously focused workspace, use +workspace
@@ -1310,6 +1311,18 @@ you can use the +move workspace to output+ command followed by the name of the
 target output. You may also use +left+, +right+, +up+, +down+ instead of the
 xrandr output name to move to the next output in the specified direction.
 
+*Syntax*:
+-----------------------------------
+workspace <next|prev|next_on_output|prev_on_output>
+workspace back_and_forth
+workspace <name>
+workspace number <number>
+
+move [window|container] [to] workspace <name>
+move [window|container] [to] workspace number <number>
+move [window|container] [to] workspace <prev|next|current>
+-----------------------------------
+
 *Examples*:
 -------------------------
 bindsym mod+1 workspace 1
@@ -1325,6 +1338,9 @@ bindsym mod+b workspace back_and_forth
 
 # move the whole workspace to the next output
 bindsym mod+x move workspace to output right
+
+# move firefox to current workspace
+bindsym mod+F1 [class="Firefox"] move workspace current
 -------------------------
 
 ==== Named workspaces

parser-specs/commands.spec

@@ -190,7 +190,7 @@ state RENAME_WORKSPACE_TO:
       -> call cmd_rename_workspace($old_name, $new_name)
 
 # move <direction> [<pixels> [px]]
-# move [window|container] [to] workspace <str>
+# move [window|container] [to] workspace [<str>|next|prev|current]
 # move [window|container] [to] output <str>
 # move [window|container] [to] scratchpad
 # move workspace to [output] <str>
@@ -231,7 +231,7 @@ state MOVE_DIRECTION_PX:
 state MOVE_WORKSPACE:
   'to'
       -> MOVE_WORKSPACE_TO_OUTPUT
-  workspace = 'next', 'prev', 'next_on_output', 'prev_on_output'
+  workspace = 'next', 'prev', 'next_on_output', 'prev_on_output', 'current'
       -> call cmd_move_con_to_workspace($workspace)
   'number'
       -> MOVE_WORKSPACE_NUMBER

src/commands.c

@@ -351,7 +351,7 @@ void cmd_criteria_add(I3_CMD, char *ctype, char *cvalue) {
 
 /*
  * Implementation of 'move [window|container] [to] workspace
- * next|prev|next_on_output|prev_on_output'.
+ * next|prev|next_on_output|prev_on_output|current'.
  *
  */
 void cmd_move_con_to_workspace(I3_CMD, char *which) {
@@ -380,6 +380,8 @@ void cmd_move_con_to_workspace(I3_CMD, char *which) {
         ws = workspace_next_on_output();
     else if (strcmp(which, "prev_on_output") == 0)
         ws = workspace_prev_on_output();
+    else if (strcmp(which, "current") == 0)
+        ws = con_get_workspace(focused);
     else {
         ELOG("BUG: called with which=%s\n", which);
         ysuccess(false);

testcases/t/132-move-workspace.t

@@ -99,6 +99,26 @@ cmd 'move workspace prev';
 ok(@{get_ws_content($tmp)} == 3, 'three containers on first ws');
 ok(@{get_ws_content($tmp2)} == 0, 'no containers on second ws');
 
+###################################################################
+# check if 'move workspace current' works
+###################################################################
+
+$tmp = get_unused_workspace();
+$tmp2 = get_unused_workspace();
+
+cmd "workspace $tmp";
+$first = open_window(name => 'win-name');
+ok(@{get_ws_content($tmp)} == 1, 'one container on first ws');
+
+cmd "workspace $tmp2";
+ok(@{get_ws_content($tmp2)} == 0, 'no containers yet');
+
+cmd qq|[title="win-name"] move workspace $tmp2|;
+ok(@{get_ws_content($tmp2)} == 1, 'one container on second ws');
+
+cmd qq|[title="win-name"] move workspace $tmp|;
+ok(@{get_ws_content($tmp2)} == 0, 'no containers on second ws');
+
 ###################################################################
 # check if floating cons are moved to new workspaces properly
 # (that is, if they are floating on the target ws, too)