Sort out typo-mode

config.org

@@ -313,7 +313,7 @@ This apparently deletes really old entries from the database.
 
 ** =git-gutter=
 
-Shows, or at least purports to show, =git diff= in the left margin if the file is being tracked by =git=.
+Shows, or at least purports to show, =git diff= in the left margin if the file is being tracked by =git=. The colours don’t seem to work properly with the current theme.
 
 #+BEGIN_SRC emacs-lisp
   (use-package git-gutter
@@ -666,14 +666,15 @@ As previously described, “the big boy”. I know little about most of these se
 
 ** =typo=
 
-Automatically use smart quotes in text modes. (This was set up with =org-mode-hook=, but surely should be =text-mode-hook=? Will revert if necessary.)
+Automatically use smart quotes. (Can’t be set to =text-mode-hook=, unfortunately, as this messes things up in LaTeX; but the only other text-modes I use are =org= and Markdown, I think.)
 
 #+BEGIN_SRC emacs-lisp
-  (use-package typo
-    :custom
-    (typo-global-mode 1)
-    :init
-    (add-hook 'text-mode-hook 'typo-mode))
+    (use-package typo
+      :custom
+      (typo-global-mode 1)
+      :init
+      (add-hook 'org-mode-hook 'typo-mode)
+      (add-hook 'markdown-mode-hook 'typo-mode))
 #+END_SRC
 
 ** =yasnippet=