-# Sources a configuration file if it exists; loads a fallback .local file if
-# it doesn't. If the .local files doesn't exist nothing is sourced.
-#
-# $1: Path to directory where configuration files are located.
-# $2: Directory name in $1 where the non .local files are stored, can be
-# empty. If empty both configuration files (normal and .local) are stored
-# in $1.
-# $3: Base name of file in $2, for example "rc" or "env".
-# $4: Extension for $3, if this file doesn't exist "$1/$3.local" is sourced.
-# $5: Additional options, set to nolocal to prevent loading of "$1/$3.local"
-# if "$1/$2/$3.$4" doesn't exist.
-#
-# Example with the following directory/file structure, $os is Darwin and
-# $hostname is marvin.
-#
-# ~/.zsh
-# ~/.zsh/env
-# ~/.zsh/env.local
-# ~/.zsh/rc
-# ~/.zsh/rc.local
-# ~/.zsh/host/rc.marvin
-# ~/.zsh/os/rc.Darwin
-#
-# To load additional rc files from within ~/.zsh/rc use the following:
-#
-# source_config ~/.zsh os rc $os # loads os/rc.Darwin
-# source_config ~/.zsh host rc $hostname # loads host/rc.marvin
-#
-# To load additional env files from within ~/.zsh/env use the following (note
-# nolocal to prevent loading env.local two times if os and host files don't
-# exist):
-#
-# source_config zsh os env $os nolocal # loads os/rc.Darwin
-# source_config zsh host env $hostname # loads env.local
-#
-# Doesn't fit perfectly in this file, but this is the best place to make it
-# available everywhere.
-function source_config() {
- # Path to the file to source and its local counterpart.
- local source_file=$1/$2/$3.$4
- local source_file_local=$1/$3.local
+# Set colors for GNU ls (and zsh completions).
+# See `dircolors --print-database` for possible colors.
+LS_COLORS='no=00'
+LS_COLORS=$LS_COLORS':fi=00' # normal files: normal
+LS_COLORS=$LS_COLORS':di=34;01' # directories: blue bold
+LS_COLORS=$LS_COLORS':ln=36' # symbolic links: cyan
+LS_COLORS=$LS_COLORS':pi=00' # named pipes: normal
+LS_COLORS=$LS_COLORS':so=00' # sockets: normal
+LS_COLORS=$LS_COLORS':bd=00' # block devices: normal
+LS_COLORS=$LS_COLORS':cd=00' # character devices: normal
+LS_COLORS=$LS_COLORS':or=36;41' # orphaned links: red background
+LS_COLORS=$LS_COLORS':su=31;01;43' # setuid files: yellow background
+LS_COLORS=$LS_COLORS':sg=31;01;43' # setgid files: yellow background
+LS_COLORS=$LS_COLORS':ow=34;01;41' # directories writable by others: blue background
+LS_COLORS=$LS_COLORS':ex=31;01' # executables: bold red
+export LS_COLORS
+# Set the same colors for non GNU ls, except for orphaned links which aren't
+# supported.
+LSCOLORS='ExgxxxxxBxxxxxBdBdExEb'
+# ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^
+# | | | | | | | | | | |
+# | | | | | | | | | | *- directory writable to others, without sticky bit
+# | | | | | | | | | *--- directory writable to others, with sticky bit
+# | | | | | | | | *----- executable with setgid bit set
+# | | | | | | | *------- executable with setuid bit set
+# | | | | | | *--------- character special
+# | | | | | *----------- block special
+# | | | | *------------- executable
+# | | | *--------------- pipe
+# | | *----------------- socket
+# | *------------------- symbolic link
+# *--------------------- directory
+export LSCOLORS