Allow customization of the default layout name in mode-line

- Changed dotspacemacs variable

core/core-dotspacemacs.el

@@ -120,8 +120,8 @@ with `:' and Emacs commands are executed with `<leader> :'.")
 (defvaralias 'dotspacemacs-remap-Y-to-y$ 'evil-want-Y-yank-to-eol
   "If non nil `Y' is remapped to `y$'.")
 
-(defvar dotspacemacs-display-default-layout nil
-  "If non nil then the `Default' layout name is displayed in the mode-line.")
+(defvar dotspacemacs-default-layout-name nil
+  "If non nil then name of the default layout as a string to be displayed in the mode-line.")
 
 (defvar dotspacemacs-use-ido nil
   "If non nil then `ido' replaces `helm' for some commands. For now only

core/templates/.spacemacs.template

@@ -112,9 +112,9 @@ values."
    dotspacemacs-command-key ":"
    ;; If non nil `Y' is remapped to `y$'. (default t)
    dotspacemacs-remap-Y-to-y$ t
-   ;; If non nil then the `Default' layout name is displayed in the mode-line
+   ;; If non nil then name of the default layout as a string to be displayed in the mode-line.
    ;; (default nil)
-   dotspacemacs-display-default-layout nil
+   dotspacemacs-default-layout-name nil
    ;; Location where to auto-save files. Possible values are `original' to
    ;; auto-save the file in-place, `cache' to auto-save the file to another
    ;; file stored in the cache directory and `nil' to disable auto-saving.

layers/+window-management/spacemacs-layouts/packages.el

@@ -36,12 +36,14 @@
       (defvar spacemacs--layouts-autosave-timer nil
         "Timer for layouts auto-save.")
 
-      (when dotspacemacs-display-default-layout
+      (when dotspacemacs-default-layout-name
         ;; load `persp-mode' if default perspective must be
         ;; displayed
         (unless (bound-and-true-p persp-mode)
           ;; we need this check because calling persp-mode again seems to
           ;; reset the list of perspectives...
+          (when (stringp dotspacemacs-default-layout-name)
+            (setq persp-nil-name dotspacemacs-default-layout-name))
           (persp-mode)))
 
       (defun spacemacs/jump-to-last-layout ()
@@ -304,4 +306,4 @@ format so they are supported by the
                (fboundp 'safe-persp-name) (fboundp 'get-frame-persp)
                (or (not (equal persp-nil-name
                                (safe-persp-name (get-frame-persp))))
-                   dotspacemacs-display-default-layout))))
+                   dotspacemacs-default-layout-name))))