Fix for bad LC_CTYPE entry

LANG is a colon-separated list of prefered locales; LC_CTYPE is single entry,
therefore we need to remove all but one entry.

Also, there is no need setting it if it is already set (LC_ALL also sets
LC_CTYPE, so we check it too).

lib/misc.zsh

@@ -9,11 +9,21 @@ setopt long_list_jobs
 export PAGER="less"
 export LESS="-R"
 
-export LC_CTYPE=$LANG
-
 ## super user alias
 alias _='sudo'
 alias please='sudo'
 
 ## more intelligent acking for ubuntu users
 alias afind='ack-grep -il'
+
+## how to interpret text characters
+if [[ -z "$LC_CTYPE" && -z "$LC_ALL" ]]; then # only define if undefined
+	export LC_CTYPE=${LANG%%:*}                 # pick the first entry from LANG
+	[[ -z "$LC_CTYPE" ]] && \
+		export LC_CTYPE=`locale -a | grep en_US.utf8 | head -1`
+	[[ -z "$LC_CTYPE" ]] && \
+		export LC_CTYPE=`locale -a | grep en_US | head -1`
+	[[ -z "$LC_CTYPE" ]] && \
+		export LC_CTYPE=C                         # default to internal encoding.
+fi
+