Fish config refactor

Move things into sub-files and sub-directories
Add ensure_path function to make sure stuff doesn't get spammed multiple
times into the PATH

fish/config.fish

@@ -2,68 +2,29 @@
 # Basics, etc…
 # ============
 
-# Default browser
+# Default editor
 set -g -x EDITOR "emacsclient"
 set -g -x ALTERNATE_EDITOR "vim"
 
-# Add ~/bin to PATH
-set -g -x PATH ~/bin $PATH
+# Setup PATH
+ensure_path ~/bin
+ensure_path ~/.emacs.d/bin
 
 # Disable Fish greeting banner
 set --universal fish_greeting
 
-# iTerm2 integration
-source ~/.config/fish/fish_startup.in
+# Configuration for apps
+for app in ~/.config/fish/apps/*.fish
+    source $app
+end
 
 # OS-specific configuration
-switch (uname)
-  case Linux
-    source ~/.config/fish/linux.fish
-  case Darwin
-    source ~/.config/fish/osx.fish
-  case '*'
-    echo 'Unknown OS. No specifc config'
-end
+source ~/.config/fish/os/os.fish
 
 # Machine-local config
 if test -e ~/.config/fish/local.fish
   source ~/.config/fish/local.fish
 end
 
-# =======
-# Vi Mode
-# =======
-
-function hybrid_bindings --description "Vi-style bindings that inherit emacs-style bindings in all modes"
-    for mode in default insert visual
-        fish_default_key_bindings -M $mode
-    end
-    fish_vi_key_bindings --no-erase
-end
+# Hybrid Vi Mode
 set -g fish_key_bindings hybrid_bindings
-
-# ========
-# Autojump
-# https://github.com/wting/autojump
-# ========
-
-[ -f /usr/local/share/autojump/autojump.fish ]; and . /usr/local/share/autojump/autojump.fish
-[ -f /usr/share/autojump/autojump.fish ]; and . /usr/share/autojump/autojump.fish
-
-# =========
-# Functions
-# =========
-
-function ec
-  emacsclient -n --alternate-editor=emacs $argv
-end
-
-# IP addresses
-function ip
-  curl icanhazip.com
-end
-
-# reload your Fish config
-function src
-  source ~/.config/fish/config.fish; and clear
-end