shifty: fusion delete/rename tag function

When a tag is empty, delete it, otherwise, rename it.

lib/shifty.lua

@@ -449,7 +449,7 @@ function del(tag)
     for i, c in ipairs(clients) do
         if c.sticky then sticky = sticky + 1 end
     end
-    if #clients > sticky then return end
+    if #clients > sticky then return false end
 
     -- store index for later
     index_cache[scr][getname(t)] = idx
@@ -469,6 +469,7 @@ function del(tag)
 
     -- FIXME: what is this for??
     if capi.client.focus then capi.client.focus:raise() end
+    return true
 end
 
 --is_client_tagged : replicate behavior in tag.c - returns true if the

rc/tags.lua

@@ -93,6 +93,12 @@ shifty.config.defaults = {
 shifty.taglist = config.taglist -- Set in widget.lua
 shifty.init()
 
+local tag_del_or_rename = function(tag)
+   if not shifty.del(tag) then
+      shifty.rename(tag)
+   end
+end
+
 config.keys.global = awful.util.table.join(
    config.keys.global,
    keydoc.group("Tag management"),
@@ -121,8 +127,8 @@ config.keys.global = awful.util.table.join(
              end,
              "Send all tags to next screen"),
    awful.key({ modkey }, 0, shifty.add, "Create a new tag"),
-   awful.key({ modkey, "Shift" }, 0, shifty.del, "Delete tag"),
-   awful.key({ modkey, "Control" }, 0, shifty.rename, "Rename tag"))
+   awful.key({ modkey, "Shift" }, 0, tag_del_or_rename),
+   awful.key({ modkey, "Control" }, 0, tag_del_or_rename, "Rename or delete tag"))
 
 -- Bind all key numbers to tags.
 -- Be careful: we use keycodes to make it works on any keyboard layout.