Move my eshell prompt to separate module

To help with autoloading, also update the Makefile to create a
`site-lisp/site-autoloads.el' file which is loaded by emacs.

emacs/.emacs.d/Makefile

@@ -1,7 +1,10 @@
-.PHONY: all site-lisp
-all: init2.elc init.elc site-lisp/oni-smt.elc site-lisp/appt-init.elc \
+SITE_LISPS = site-lisp/oni-smt.elc site-lisp/appt-init.elc \
 	site-lisp/jabber-init.elc site-lisp/org-init.elc \
-	site-lisp/gnus-init.elc site-lisp/drd.elc
+	site-lisp/gnus-init.elc site-lisp/drd.elc \
+	site-lisp/oni-eshell-prompt.elc
+
+.PHONY: all site-lisp
+all: init2.elc init.elc $(SITE_LISPS) site-lisp/site-autoloads.el
 
 %.elc: %.el
 	@echo "ELC $<"
@@ -12,15 +15,29 @@ init2.el: init.org org/intro.org
 	@echo "OBT $<"
 	@emacs -Q -batch -l "ob-tangle" -eval "(org-babel-tangle-file \"init.org\")"
 
+site-lisp/site-autoloads.el: $(SITE_LISPS)
+	@echo "GEN $@"
+	@cask exec emacs -Q -batch \
+		-eval "(setq generated-autoload-file \"$(CURDIR)/$@\")" \
+		-eval "(update-directory-autoloads \"$(CURDIR)/site-lisp/\")"
+
 rudel:
 	git clone git://github.com/scymtym/rudel.git packages/rudel
 	emacs -Q --batch --visit packages/rudel/rudel-compile.el \
 		--eval "(eval-buffel)"
 
-clean:
+clean-byte-compiled:
+	rm -f $(SITE_LISPS) init2.elc init.elc
+
+clean-autoloads:
+	rm -f site-lisp/site-autoloads.el init2.el
+
+clean-export:
 	rm -rf _publish/*.*
 
-export: clean
+clean: clean-export clean-byte-compiled clean-generated
+
+export: clean-export
 	emacs -L $(CURDIR) -L ~/.emacs.d/vendor-lisp/org/lisp \
 		-L ~/.emacs.d/vendor-lisp/org/contrib/lisp -batch -l project.el \
 		-f org-publish-all

emacs/.emacs.d/init.el

@@ -251,12 +251,6 @@ But only if it is a maildir inbox."
                    'action (lambda (button)
                              (browse-url (button-label button)))))))
 
-(defun oni:eshell-prompt ()
-  "Show a pretty shell prompt."
-  (concat (if (not (looking-back "\n" nil)) "\n")
-          (oni:shorten-dir (abbreviate-file-name (eshell/pwd)))
-          " > "))
-
 (defun oni:go-mode-func ()
   "Function for `go-mode-hook'."
   (setq indent-tabs-mode nil))
@@ -710,12 +704,6 @@ For `python-mode' I prefer `python-imenu-create-flat-index'."
     (insert "`" command "':\n"))
   (shell-command command output-buffer))
 
-(defun oni:shorten-dir (dir)
-  "Shorten a directory, (almost) like fish does it."
-  (while (string-match "\\(\\.?[^./]\\)[^/]+/" dir)
-    (setq dir (replace-match "\\1/" nil nil dir)))
-  dir)
-
 (defun oni:show-buffer-position ()
   "Show the position in the current buffer."
   (interactive)
@@ -1011,9 +999,7 @@ from myaethon2.core.decorators import (
   (setq eltuki-blog-dir "~/documents/blog"))
 
 (stante-after em-prompt
-  (setq eshell-highlight-prompt nil)
-  (setq eshell-prompt-function 'oni:eshell-prompt)
-  (setq eshell-prompt-regexp "^[~/].* > "))
+  (setq eshell-highlight-prompt nil))
 
 (stante-after em-term
   (add-to-list 'eshell-visual-commands "unison"))
@@ -1287,6 +1273,7 @@ from myaethon2.core.decorators import (
 
 ;;;; Hooks
 
+(add-hook 'eshell-first-time-mode-hook 'oni-eshell-set-prompt)
 (add-hook 'after-save-hook 'oni:after-save-func t)
 (add-hook 'before-save-hook 'oni:before-save-func)
 (add-hook 'css-mode-hook #'rainbow-mode)
@@ -1504,6 +1491,7 @@ from myaethon2.core.decorators import (
 (windmove-default-keybindings)
 
 (load (system-name) :noerror)
+(load "site-autoloads")
 
 ;;; Test
 

emacs/.emacs.d/site-lisp/oni-eshell-prompt.el

@@ -0,0 +1,55 @@
+;;; oni-eshell-prompt.el --- Oni's eshell prompt functions  -*- lexical-binding: t; -*-
+
+;; Copyright (C) 2015  Tom Willemse
+
+;; Author: Tom Willemse <tom@ryuslash.org>
+;; Keywords:
+
+;; This program is free software; you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+
+;; This program is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;; GNU General Public License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+;;; Commentary:
+
+;; These are the functions I use to provide my eshell prompt.
+
+;; You can use it by adding `oni-eshell-set-prompt' to the
+;; `eshell-first-time-mode-hook'.
+
+;;; Code:
+
+(require 'em-dirs)
+(require 'em-prompt)
+
+(defvar oni:eshell-prompt-regexp "^[~/].* > "
+  "A regular expression that matches the prompt.")
+
+(defun oni:shorten-dir (dir)
+  "Shorten a directory, (almost) like fish does it."
+  (while (string-match "\\(\\.?[^./]\\)[^/]+/" dir)
+    (setq dir (replace-match "\\1/" nil nil dir)))
+  dir)
+
+(defun oni:eshell-prompt ()
+  "Show a pretty shell prompt."
+  (concat (if (not (looking-back "\n" nil)) "\n")
+          (oni:shorten-dir (abbreviate-file-name (eshell/pwd)))
+          " > "))
+
+;;;###autoload
+(defun oni-eshell-set-prompt ()
+  "Prepare eshell for using the prompt."
+  (setq eshell-prompt-function #'oni:eshell-prompt
+        eshell-prompt-regexp oni:eshell-prompt-regexp))
+
+(provide 'oni-eshell-prompt)
+;;; oni-eshell-prompt.el ends here