Add Spacemacs docs minor mode to hide meta tags.

`space-doc-mode` - Buffer local minor mode for Spacemacs documentation files. The mode hides org meta tags.
Enabled when viewing documentation via `SPC` `h` `SPC`

core/core-funcs.el

@@ -171,6 +171,7 @@ Supported properties:
   (find-file file)
   (org-indent-mode)
   (view-mode)
+  (when(and(boundp 'space-doc-mode)(fboundp 'space-doc-mode)(space-doc-mode)))
   (goto-char (point-min))
 
   (when anchor-text

layers/org/local/space-doc/space-doc.el

@@ -0,0 +1,46 @@
+;;; space-doc.el --- Spacemacs documentation minor mode.
+;;
+;; Copyright (c) 2012-2016 Sylvain Benner & Contributors
+;;
+;; Author: Sylvain Benner <sylvain.benner@gmail.com>
+;; URL: https://github.com/syl20bnr/spacemacs
+;;
+;; This file is not part of GNU Emacs.
+;;
+;;; License: GPLv3
+;;; Code:
+(require 'face-remap)
+(require 'org)
+
+;;;###autoload
+(define-minor-mode space-doc-mode
+  "Buffer local minor mode for Spacemacs documentation files.
+The mode hides `org-mode' meta tags like #+TITLE: while
+keeping their content visible."
+  :init-value nil
+  :lighter " ❤"
+  (if (eq major-mode 'org-mode)
+      (if space-doc-mode
+          (let ((bg (face-attribute 'default :background)))
+            (progn
+              ;; Make `org-mode' meta tags invisible.
+              (set (make-local-variable 'spacemacs--org-face-remap-cookie-org-tag)
+                   (face-remap-add-relative 'org-tag                  `(:foreground ,bg)))
+              (set (make-local-variable 'spacemacs--org-face-remap-cookie-org-meta-line)
+                   (face-remap-add-relative 'org-meta-line             `(:foreground ,bg)))
+              (set (make-local-variable 'spacemacs--org-face-remap-cookie-org-block-begin-line)
+                   (face-remap-add-relative 'org-block-begin-line      `(:foreground ,bg)))
+              (set (make-local-variable 'spacemacs--org-face-remap-cookie-org-document-info-keyword)
+                   (face-remap-add-relative 'org-document-info-keyword `(:foreground ,bg)))))
+        (progn
+          ;; Make `org-mode' meta tags visible.
+          (face-remap-remove-relative spacemacs--org-face-remap-cookie-org-tag)
+          (face-remap-remove-relative spacemacs--org-face-remap-cookie-org-meta-line)
+          (face-remap-remove-relative spacemacs--org-face-remap-cookie-org-block-begin-line)
+          (face-remap-remove-relative spacemacs--org-face-remap-cookie-org-document-info-keyword)
+          (setq spacemacs--org-face-remap-p nil)))
+    (progn (message (format "space-doc-mode error:%s isn't an org-mode buffer" (buffer-name)))
+           (setq org-mode nil))))
+
+(provide 'space-doc)
+;;; space-doc.el ends here

layers/org/packages.el

@@ -32,6 +32,7 @@
     org-repo-todo
     (ox-gfm :location local)
     persp-mode
+    (space-doc :location local)
     toc-org
     ))
 
@@ -546,3 +547,6 @@ a Markdown buffer and use this command to convert it.
 (defun org/init-htmlize ()
  (use-package htmlize
     :defer t))
+
+(defun org/init-space-doc ()
+  (use-package space-doc))