The functions directory should only hold functions.

functions/helper.zsh

@@ -1,50 +0,0 @@
-# Checks if a file can be autoloaded by trying to load it in a subshell.
-function autoloadable() {
-  ( unfunction $1 ; autoload -U +X $1 ) &> /dev/null
-}
-
-# Checks boolean variable for "true" (case insensitive "1", "y", "yes", "t", "true", "o", and "on").
-function check-bool {
-  [[ -n "$1" && "$1" == (1|[Yy]([Ee][Ss]|)|[Tt]([Rr][Uu][Ee]|)|[Oo]([Nn]|)) ]]
-}
-
-# Trap signals were generated with 'kill -l'.
-# DEBUG, EXIT, and ZERR are ZSH signals.
-TRAP_SIGNALS=(
-  ABRT ALRM BUS CHLD CONT EMT FPE HUP ILL INFO INT IO KILL PIPE PROF QUIT
-  SEGV STOP SYS TERM TRAP TSTP TTIN TTOU URG USR1 USR2 VTALRM WINCH XCPU XFSZ
-  DEBUG EXIT ZERR
-)
-
-# Adds a function to a list to be called when a trap is triggered.
-function add-zsh-trap {
-  if (( $# < 2 )); then
-    echo "Usage: $0 type function"
-    return 1
-  fi
-
-  if [[ -z "$TRAP_SIGNALS[(r)$1]" ]]; then
-    echo "$0: unknown signal: $1"
-    return 1
-  fi
-
-  local trap_functions="TRAP${1}_FUNCTIONS"
-  if (( ! ${(P)+trap_functions} )); then
-    typeset -gaU "$trap_functions"
-  fi
-  eval "$trap_functions+="$2""
-
-  if (( ! $+functions[TRAP${1}] )); then
-    eval "
-     function TRAP${1}() {
-        for trap_function in \"\$TRAP${1}_FUNCTIONS[@]\"; do
-          if (( \$+functions[\$trap_function] )); then
-            \"\$trap_function\" \"\$1\"
-          fi
-        done
-        return \$(( 128 + \$1 ))
-     }
-    "
-  fi
-}
-