[emacs] Various improvements

.emacs.d/emacs.org

@@ -8,12 +8,50 @@
   (setq inhibit-startup-screen +1)
 #+END_SRC
 * UI
+** Powerline
+Make the mode line prettier.
+#+name: look-and-feel
+#+BEGIN_SRC emacs-lisp
+  (use-package powerline
+    :ensure t
+    :config
+
+    (powerline-default-theme))
+#+END_SRC
+** Nyan-mode
+Visualize the current position within the buffer in the modeline with nyancat!
+#+name: look-and-feel
+#+BEGIN_SRC emacs-lisp
+  (use-package nyan-mode
+    :ensure t
+    :config
+    (nyan-mode)
+    (nyan-start-animation))
+#+END_SRC
 ** Theme
 #+name: look-and-feel
 #+BEGIN_SRC emacs-lisp
-  (use-package solarized-theme
+  (use-package moe-theme
     :ensure t
-    :init (load-theme 'solarized-dark 't))
+    :config
+
+    (setq moe-theme-resize-markdown-title '(1.5 1.4 1.3 1.2 1.0 1.0))
+    (setq moe-theme-resize-org-title '(1.5 1.4 1.3 1.2 1.1 1.0 1.0 1.0 1.0))
+    (setq moe-theme-resize-rst-title '(1.5 1.4 1.3 1.2 1.1 1.0))
+
+    (setq moe-theme-highlight-buffer-id t)
+    (moe-theme-set-color 'cyan)
+    (powerline-moe-theme)
+    (moe-light))
+
+#+END_SRC
+** Major mode icons
+Display major-mode names as icons in the mode line when possible.
+#+name: look-and-feel
+#+BEGIN_SRC emacs-lisp
+  (use-package mode-icons
+    :ensure t
+    :config (mode-icons-mode))
 #+END_SRC
 ** Helm
 #+name: packages
@@ -48,9 +86,9 @@
 Helm search plugin for [[Ag%20(The%20Silver%20Searcher)][Ag (The Silver Searcher)]]
 #+name: packages
 #+BEGIN_SRC emacs-lisp
-    (use-package helm-ag
-      :ensure t
-      :defer 1)
+  (use-package helm-ag
+    :ensure t
+    :commands (helm-ag))
 #+END_SRC
 *** helm-flyspell
 #+name: packages
@@ -65,12 +103,26 @@ Helm search plugin for [[Ag%20(The%20Silver%20Searcher)][Ag (The Silver Searcher
 
 Replace isearch-forward with helm-swoop for a nicer experience.
 
+#+BEGIN_NOTES
+Quite usefully, using prefix arguments expands the lines of context
+shown around the search results.
+#+END_NOTES
+
 #+name: packages
 #+BEGIN_SRC emacs-lisp
   (use-package helm-swoop
     :ensure t
     :commands (helm-swoop)
-    :bind (("C-s" . helm-swoop)))
+    :bind (("C-s" . helm-swoop))
+    :config
+    ;; Defaults to (lambda () (thing-at-point 'symbol)).
+    ;; Setting it to return nil, as I find it tends to be more annoying than useful.
+    (setq helm-swoop-pre-input-function (lambda () nil))
+    ;; Enable syntax highlighting. It makes it easier for my eyes to
+    ;; parse the results, and doesn't seem to slow things down
+    ;; measurably.
+    (setq helm-swoop-speed-or-color t)
+    )
 #+END_SRC
 * Coding
 ** Languages
@@ -94,13 +146,17 @@ Replace isearch-forward with helm-swoop for a nicer experience.
   (setq inferior-lisp-program "clisp")
 
   (use-package paredit
-    :ensure t)
+    :ensure t
+    :commands (paredit-mode)
+    :diminish " ❨❩")
 
   (use-package rainbow-identifiers
-    :ensure t)
+    :ensure t
+    :commands (rainbow-identifiers-mode))
 
   (use-package rainbow-delimiters
-    :ensure t)
+    :ensure t
+    :commands (rainbow-delimiters-mode))
 
   (let ((lisp-mode-hooks
          (mapcar (lambda (lisp)
@@ -346,23 +402,16 @@ Configure jedi and company-mode to provide auto-completion for python.
 #+END_SRC
 *** PlantUML
 
-Install [[https://github.com/skuro/puml-mode][puml-mode]] and alias it as plantuml-mode so it plays nice with
-org documents and ob-plantuml.
-
 #+name: programming
 #+BEGIN_SRC emacs-lisp
-  (use-package puml-mode
+  (use-package plantuml-mode
     :ensure t
     :mode "\\.plantuml\\'"
-    :commands puml-mode
-    :init
-
-    (define-derived-mode plantuml-mode
-      puml-mode "PlantUML Mode"))
+    :commands plantuml-mode)
 #+END_SRC
 
 Don't forget to configure =org-plantuml-jar-path= and
-=puml-plantuml-jar-path= to point to a version of plantuml.jar on your
+=plantuml-jar-path= to point to a version of plantuml.jar on your
 system.
 ** Tools
 *** Projectile
@@ -370,13 +419,13 @@ system.
 #+BEGIN_SRC emacs-lisp
   (use-package projectile
     :ensure t
-    :defer 1
-    :config
-
-    (projectile-mode t)
+    :diminish " 📁"
+    :init
     (use-package helm-projectile
       :ensure t
-      :config (helm-projectile-on)))
+      :config (helm-projectile-on))
+    :config
+    (projectile-mode t))
 #+END_SRC
 *** Autocomplete
 **** Company
@@ -387,6 +436,7 @@ Install and configure Company for auto-completion.
 #+BEGIN_SRC emacs-lisp
   (use-package company
     :ensure t
+    :commands (company-mode)
     :config (progn
               (add-hook 'prog-mode-hook 'company-mode)
 
@@ -401,7 +451,8 @@ require it.
 #+name: autocomplete
 #+begin_src emacs-lisp
   (use-package auto-complete
-    :ensure t)
+    :ensure t
+    :defer t)
 #+end_src
 
 *** Flycheck
@@ -409,6 +460,7 @@ require it.
 #+BEGIN_SRC emacs-lisp
   (use-package flycheck
     :ensure t
+    :diminish " ✓"
     :init
     (add-hook 'after-init-hook #'global-flycheck-mode))
 #+END_SRC
@@ -454,7 +506,7 @@ magnitude faster.
 #+BEGIN_SRC emacs-lisp
   (use-package ag
     :ensure t
-    :defer 1)
+    :commands (ag))
 #+END_SRC
 *** Expand Region
 Increase selected region by semantic units.
@@ -537,7 +589,8 @@ names.
 #+name: packages
 #+begin_src emacs-lisp
   (use-package ob-http
-    :ensure t)
+    :ensure t
+    :defer t)
 #+end_src
 ***** Language evaluation
 
@@ -664,7 +717,8 @@ Taken from [[http://pragmaticemacs.com/emacs/wrap-text-in-an-org-mode-block/][Pr
 #+name: packages
 #+BEGIN_SRC emacs-lisp
   (use-package tex-site
-    :ensure auctex)
+    :ensure auctex
+    :mode ("\\.tex$" . TeX-latex-mode))
 #+END_SRC
 **** LaTeX-Extra
 #+name: packages