Fix for dumb terminals like Vim's.

lib/completion.zsh

@@ -1,4 +1,5 @@
 # fixme - the load process here seems a bit bizarre
+[[ "$TERM" == "dumb" ]] && return
 
 unsetopt menu_complete   # do not autoselect the first completion entry
 unsetopt flowcontrol

lib/grep.zsh

@@ -1,6 +1,4 @@
-#
-# Color grep results
-# Examples: http://rubyurl.com/ZXv
-#
-export GREP_OPTIONS='--color=auto'
-export GREP_COLOR='1;32'
+if [[ "$DISABLE_COLOR" != "true" ]]; then
+    [[ -z "$GREP_OPTIONS" ]] && export GREP_OPTIONS='--color=auto'
+    [[ -z "$GREP_COLOR" ]] && export GREP_COLOR='1;32'
+fi

lib/misc.zsh

@@ -9,5 +9,5 @@ bindkey "^[m" copy-prev-shell-word
 setopt long_list_jobs
 
 ## pager
-export PAGER=less
-export LC_CTYPE=en_US.UTF-8
+[[ -z "$PAGER" ]] && export PAGER=less
+[[ -z "$LC_CTYPE" ]] && export LC_CTYPE=en_US.UTF-8

lib/termsupport.zsh

@@ -1,3 +1,5 @@
+[[ "$TERM" == "dumb" ]] && return
+
 #usage: title short_tab_title looooooooooooooooooooooggggggg_windows_title
 #http://www.faqs.org/docs/Linux-mini/Xterm-Title.html#ss3.1
 #Fully support screen, iterm, and probably most modern xterm and rxvt

lib/theme-and-appearance.zsh

@@ -1,10 +1,9 @@
 # ls colors
 autoload colors; colors;
-export LSCOLORS="Gxfxcxdxbxegedabagacad"
-#export LS_COLORS
+[[ -z "$LSCOLORS" ]] && export LSCOLORS="Gxfxcxdxbxegedabagacad"
 
 # Enable ls colors
-if [ "$DISABLE_LS_COLORS" != "true" ]
+if [ "$DISABLE_COLOR" != "true" ]
 then
   # Find the option for using colors in ls, depending on the version: Linux or BSD
   ls --color -d . &>/dev/null 2>&1 && alias ls='ls --color=tty' || alias ls='ls -G'