zsh: move/hide initialization

this also improves .zsh bytecode compilation

.config/zsh/_.zsh

@@ -0,0 +1,59 @@
+#!/bin/zsh
+
+: "${ZDOTDIR:=${HOME}}"
+
+typeset -gA ZSHU
+
+ZSHU[t_begin]=${(%):-%D{%s.%6.}}
+
+ZSHU[d_zdot]="${ZDOTDIR}"
+ZSHU[d_cache]="${ZDOTDIR}/.cache/zsh"
+ZSHU[d_conf]="${ZDOTDIR}/.config/zsh"
+
+ZSHU[d_var]="${ZSHU[d_conf]}/var"
+
+ZSHU[d_bin]="${ZDOTDIR}/.config/dotfiles/bin/"
+
+for i ( d_zdot d_cache d_conf d_bin d_var ) ; do
+    d=${ZSHU[$i]}
+    [ -d "$d" ] || mkdir -p "$d"
+done ; unset i d
+
+## early escape
+unsetopt GLOBAL_RCS
+
+## safety measure:
+## redirect all following activity within ZDOTDIR to cache
+## (probably) these files are safe to remove
+ZDOTDIR="${ZSHU[d_cache]}"
+rm -f "${ZDOTDIR}/.zshrc" "${ZDOTDIR}/.zlogin"
+
+## cleanup: start from scratch
+for i ( a s f d ) ; do unhash -$i -m '*' ; done ; unset i
+
+## set default umask
+umask 0022
+
+zshu_parts=( env opt lib rc alias local )
+
+for n ( $zshu_parts ) ; do
+    f="${ZSHU[d_conf]}/$n.zsh"
+    [ -s "$f" ] && source "$f"
+done ; unset n f
+
+for n ( $zshu_parts ) ; do
+    d="${ZSHU[d_conf]}/$n"
+    [ -d "$d" ] || continue
+    for i ( $d/*.zsh(N.r) ) ; do
+        source "$i"
+    done ; unset i
+done ; unset n d
+
+unset zshu_parts
+
+ZSHU[t_end]=${(%):-%D{%s.%6.}}
+
+ZSHU[t_load]=$(( ZSHU[t_end] - ZSHU[t_begin] ))
+ZSHU[t_load]=${ZSHU[t_load]:0:6}
+
+unset "ZSHU[t_begin]" "ZSHU[t_end]"

.zshenv

@@ -1,62 +1,6 @@
 #!/bin/zsh
-
 if [[ -o interactive ]] ; then
-
+    ## early redirect
     : "${ZDOTDIR:=${HOME}}"
-
-    typeset -gA ZSHU
-
-    ZSHU[t_begin]=${(%):-%D{%s.%6.}}
-
-    ZSHU[d_zdot]="${ZDOTDIR}"
-    ZSHU[d_cache]="${ZDOTDIR}/.cache/zsh"
-    ZSHU[d_conf]="${ZDOTDIR}/.config/zsh"
-
-    ZSHU[d_var]="${ZSHU[d_conf]}/var"
-
-    ZSHU[d_bin]="${ZDOTDIR}/.config/dotfiles/bin/"
-
-    for i ( d_zdot d_cache d_conf d_bin d_var ) ; do
-        d=${ZSHU[$i]}
-        [ -d "$d" ] || mkdir -p "$d"
-    done ; unset i d
-
-    ## early escape
-    unsetopt GLOBAL_RCS
-
-    ## safety measure:
-    ## redirect all following activity within ZDOTDIR to cache
-    ## (probably) these files are safe to remove
-    ZDOTDIR="${ZSHU[d_cache]}"
-    rm -f "${ZDOTDIR}/.zshrc" "${ZDOTDIR}/.zlogin"
-
-    ## cleanup: start from scratch
-    for i ( a s f d ) ; do unhash -$i -m '*' ; done ; unset i
-
-    ## set default umask
-    umask 0022
-
-    zshu_parts=( env opt lib rc alias local )
-
-    for n ( $zshu_parts ) ; do
-        f="${ZSHU[d_conf]}/$n.zsh"
-        [ -s "$f" ] && source "$f"
-    done ; unset n f
-
-    for n ( $zshu_parts ) ; do
-        d="${ZSHU[d_conf]}/$n"
-        [ -d "$d" ] || continue
-        for i ( $d/*.zsh(N.r) ) ; do
-            source "$i"
-        done ; unset i
-    done ; unset n d
-
-    unset zshu_parts
-
-    ZSHU[t_end]=${(%):-%D{%s.%6.}}
-
-    ZSHU[t_load]=$(( ZSHU[t_end] - ZSHU[t_begin] ))
-    ZSHU[t_load]=${ZSHU[t_load]:0:6}
-
-    unset "ZSHU[t_begin]" "ZSHU[t_end]"
+    source "${ZDOTDIR}/.config/zsh/_.zsh"
 fi