lib: speed up slow parts of the lib files; other small fixes

lib/completion.zsh

@@ -73,4 +73,4 @@ if [[ $COMPLETION_WAITING_DOTS = true ]]; then
 fi
 
 # automatically load bash completion functions
-autoload -Uz bashcompinit && bashcompinit
+autoload -U +X bashcompinit && bashcompinit

lib/functions.zsh

@@ -89,7 +89,7 @@ function default() {
 #    0 if the env variable exists, 3 if it was set
 #
 function env_default() {
-    (( ${${(@f):-$(typeset +xg)}[(I)$1]} )) && return 0
+    [[ ${parameters[$1]} = *-export* ]] && return 0
     export "$1=$2" && return 3
 }
 

lib/misc.zsh

@@ -25,7 +25,7 @@ env_default 'LESS' '-R'
 alias _='sudo '
 
 ## more intelligent acking for ubuntu users
-if which ack-grep &> /dev/null; then
+if (( $+commands[ack-grep] )); then
   alias afind='ack-grep -il'
 else
   alias afind='ack -il'

lib/spectrum.zsh

-#! /bin/zsh
 # A script to make using 256 colors in zsh less painful.
 # P.C. Shyamshankar <sykora@lucentbeing.com>
 # Copied from https://github.com/sykora/etc/blob/master/zsh/functions/spectrum/
@@ -19,19 +18,18 @@ for color in {000..255}; do
   BG[$color]="%{[48;5;${color}m%}"
 done
 
-
-ZSH_SPECTRUM_TEXT=${ZSH_SPECTRUM_TEXT:-Arma virumque cano Troiae qui primus ab oris}
-
 # Show all 256 colors with color number
 function spectrum_ls() {
+  local ZSH_SPECTRUM_TEXT=${ZSH_SPECTRUM_TEXT:-Arma virumque cano Troiae qui primus ab oris}
   for code in {000..255}; do
-    print -P -- "$code: %{$FG[$code]%}$ZSH_SPECTRUM_TEXT%{$reset_color%}"
+    print -P -- "$code: $FG[$code]$ZSH_SPECTRUM_TEXT%{$reset_color%}"
   done
 }
 
 # Show all 256 colors where the background is set to specific color
 function spectrum_bls() {
+  local ZSH_SPECTRUM_TEXT=${ZSH_SPECTRUM_TEXT:-Arma virumque cano Troiae qui primus ab oris}
   for code in {000..255}; do
-    print -P -- "$code: %{$BG[$code]%}$ZSH_SPECTRUM_TEXT%{$reset_color%}"
+    print -P -- "$code: $BG[$code]$ZSH_SPECTRUM_TEXT%{$reset_color%}"
   done
 }