Fix bug in zshrc and tighten up code

The bug was that tilde expansion was inconsistent, so one of the tests
always failed. Replaced ~ with $HOME.

zshrc

@@ -2,13 +2,10 @@
 setopt EXTENDED_GLOB
 
 # Source in resources
-find ~/.zsh/zshrc{,_local}.d/([a-zA-Z0-9-]##).zsh | sort -t/ -k6,6 | while read LINE; do
-	DIR="${LINE%/*}"
-	FILE="${LINE##*/}"
-
+ls $HOME/.zsh/zshrc{,_local}.d/([a-zA-Z0-9-]##).zsh | sort -t/ -k6,6 | while read LINE; do
 	# If there's a file in zshrc_local.d with the same name as one
 	# in zshrc.d, ignore the file in zshrc.d
-	if [[ "$DIR" =~ "zshrc.d" ]] && [ -e "~/.zsh/zshrc_local.d/$FILE" ]; then
+	if [[ "$LINE" =~ "zshrc.d" && -e "$HOME/.zsh/zshrc_local.d/${LINE:t}" ]] ; then
 		# Do nothing
 		:
 	else