diff --git a/functions/..znap.compinit-hook b/functions/..znap.compinit-hook
index c30179d..aa6acac 100644
--- a/functions/..znap.compinit-hook
+++ b/functions/..znap.compinit-hook
@@ -21,9 +21,9 @@ if ! [[ -v _comp_setup && -f $_comp_dumpfile ]]; then
       ) &|
 fi
 
-private args=
-for args in "$_znap_compdef[@]"; do
-  eval "compdef $args"
+private _P__args=
+for _P__args in "$_znap_compdef[@]"; do
+  eval "compdef $_P__args"
 done
 
 unset _znap_compdef
diff --git a/functions/..znap.dirname b/functions/..znap.dirname
index d837aa0..c8e08a6 100644
--- a/functions/..znap.dirname
+++ b/functions/..znap.dirname
@@ -36,12 +36,12 @@
 
 # Complete ~[$PREFIX$SUFFIX
 ..znap.dirname.c() {
-  private tag=named-directories
-  _tags $tag
+  private _P__tag=named-directories
+  _tags $_P__tag
 
   local -a expl=()
   _tags &&
-      _requested $tag expl 'named directory' &&
+      _requested $_P__tag expl 'named directory' &&
           compadd "$expl[@]" -I ']' -Q - ~znap/*(on-/:t)
 }
 
diff --git a/functions/.znap.compdef b/functions/.znap.compdef
index 51e775c..b386a75 100644
--- a/functions/.znap.compdef
+++ b/functions/.znap.compdef
@@ -1,39 +1,39 @@
 #!/bin/zsh
-# add output of command as completion function (deprecated)
+# DEPRECATED
 # args: <function> <command>
 zmodload -F zsh/files b:zf_mkdir
 
-private name=$1 generator=$2
+private _P__name=$1 _P__generator=$2
 shift 2
 
-private cache_dir=$XDG_CACHE_HOME/zsh-snap/fpath
-zf_mkdir -pm 0700 $cache_dir
-fpath=( $cache_dir $fpath[@] )
+private _P__cache_dir=$XDG_CACHE_HOME/zsh-snap/fpath
+zf_mkdir -pm 0700 $_P__cache_dir
+fpath=( $_P__cache_dir $fpath[@] )
 
-private cache_file=$cache_dir/$name
-if [[ -r $cache_file ]]; then
+private _P__cache_file=$_P__cache_dir/$_P__name
+if [[ -r $_P__cache_file ]]; then
   local line=
-  IFS='' read -r line < $cache_file
+  IFS='' read -r line < $_P__cache_file
 
   [[ $line != '#compdef '* ]] &&
       return $(( sysexits[(i)DATAERR] + 63 ))
 
-  private -a cmds=( ${=line#'#compdef '} )
-  private c=
-  for c in $cmds[@]; do
-    if [[ ${${:-=$c}:a} -nt $cache_file ]]; then
-      eval "$generator" >| $cache_file ||
+  private -a _P__cmds=( ${=line#'#compdef '} )
+  private _P__c=
+  for _P__c in $_P__cmds[@]; do
+    if [[ ${${:-=$_P__c}:a} -nt $_P__cache_file ]]; then
+      eval "$_P__generator" >| $_P__cache_file ||
           return
       break
     fi
   done
 else
-  eval "$generator" > $cache_file ||
+  eval "$_P__generator" > $_P__cache_file ||
       return
 fi
-autoload -Uz $cache_file
+autoload -Uz $_P__cache_file
 
 [[ -v _comp_setup ]] &&
-    compdef $name $cmds[@]
+    compdef $_P__name $_P__cmds[@]
 
 true
diff --git a/functions/.znap.eval b/functions/.znap.eval
index 56d2c55..6de60b2 100644
--- a/functions/.znap.eval
+++ b/functions/.znap.eval
@@ -11,48 +11,48 @@ fi
 
 .znap.eval.generate() {
   (
-    private __repo=$1 __cache_file=$2
+    private _P__repo=$1 _P__cache_file=$2
     shift 2
-    private __header="#${(q)@}"
+    private _P__header="#${(q)@}"
 
     local __line
-    [[ -r $__cache_file ]] &&
-        IFS='' read -r __line < $__cache_file
-
-    if [[ $__line != $__header ||
-        ( -d $__repo && -f $__repo/${GIT_DIR:-.git}/index &&
-            $__repo/${GIT_DIR:-.git}/index -nt $__cache_file ) ]]; then
-      [[ -d $__repo ]] &&
-          cd -q -- $__repo
-      print -r -- "$__header" >| $__cache_file
-      eval "$@" >>| $__cache_file
-      .znap.compile $__cache_file
+    [[ -r $_P__cache_file ]] &&
+        IFS='' read -r __line < $_P__cache_file
+
+    if [[ $__line != $_P__header ||
+        ( -d $_P__repo && -f $_P__repo/${GIT_DIR:-.git}/index &&
+            $_P__repo/${GIT_DIR:-.git}/index -nt $_P__cache_file ) ]]; then
+      [[ -d $_P__repo ]] &&
+          cd -q -- $_P__repo
+      print -r -- "$_P__header" >| $_P__cache_file
+      eval "$@" >>| $_P__cache_file
+      .znap.compile $_P__cache_file
     fi
   )
 }
 
-private __repo=~znap/$1 __cache_dir=$XDG_CACHE_HOME/zsh-snap/eval
+private _P__repo=~znap/$1 __cache_dir=$XDG_CACHE_HOME/zsh-snap/eval
 [[ $1 == */* ]] &&
-    __repo=~[$1]
+    _P__repo=~[$1]
 shift
 
 zf_mkdir -pm 0700 $__cache_dir
-private __cache_file=$__cache_dir/${__repo:t}.zsh
+private _P__cache_file=$__cache_dir/${_P__repo:t}.zsh
 
-if [[ -r $__cache_file ]]; then
-  .znap.eval.generate "$__repo" "$__cache_file" "$@" &|
+if [[ -r $_P__cache_file ]]; then
+  .znap.eval.generate "$_P__repo" "$_P__cache_file" "$@" &|
 else
   print -r "znap eval: generating cache for $*"
-  .znap.eval.generate "$__repo" "$__cache_file" "$@"
+  .znap.eval.generate "$_P__repo" "$_P__cache_file" "$@"
 fi
 
 # Wrap in a named function for profiling purposes.
-.znap.eval:${__cache_file:t}() {
+.znap.eval:${_P__cache_file:t}() {
   . "$1"
 }
 {
-  .znap.eval:${__cache_file:t} "$__cache_file"
+  .znap.eval:${_P__cache_file:t} "$_P__cache_file"
 } always {
   TRY_BLOCK_ERROR=
-  unfunction .znap.eval:${__cache_file:t}
+  unfunction .znap.eval:${_P__cache_file:t}
 }
diff --git a/functions/.znap.fpath b/functions/.znap.fpath
index 931623a..9fbd7b3 100644
--- a/functions/.znap.fpath
+++ b/functions/.znap.fpath
@@ -4,17 +4,17 @@
 emulate -L zsh; setopt $_znap_opts
 zmodload -F zsh/files b:zf_mkdir
 
-private name=$1 generator=$2 dir=${XDG_DATA_HOME:-~/.local/share}/zsh/site-functions
+private _P__name=$1 _P__generator=$2 dir=${XDG_DATA_HOME:-~/.local/share}/zsh/site-functions
 shift 2
 
 zf_mkdir -pm 0700 $dir
 
-private file=$dir/$name
-eval "$generator" >| $file ||
+private _P__file=$dir/$_P__name
+eval "$_P__generator" >| $_P__file ||
     return
 
-print -r -- "#$generator" >>| $file
-.znap.compile $file
+print -r -- "#$_P__generator" >>| $_P__file
+.znap.compile $_P__file
 
 [[ -f $_comp_dumpfile ]] &&
     zf_rm -f $_comp_dumpfile
diff --git a/functions/.znap.multi b/functions/.znap.multi
index 2a5297d..f8eb645 100644
--- a/functions/.znap.multi
+++ b/functions/.znap.multi
@@ -3,15 +3,15 @@
 # args: <command>
 
 local fd=
-private -a fds=()
-private cmd=
+private -a _P__fds=()
+private _P__cmd=
 {
-  for cmd in $@; do
-    exec {fd}< <( eval "$cmd" )
-    fds+=( $fd )
+  for _P__cmd in $@; do
+    exec {fd}< <( eval "$_P__cmd" )
+    _P__fds+=( $fd )
   done
 } always {
-  for fd in $fds[@]; do
+  for fd in $_P__fds[@]; do
     <&$fd
     exec {fd}<&-
   done
diff --git a/functions/.znap.prompt b/functions/.znap.prompt
index f1a7e03..265a080 100644
--- a/functions/.znap.prompt
+++ b/functions/.znap.prompt
@@ -7,11 +7,11 @@ autoload -Uz add-zsh-hook add-zle-hook-widget promptinit
 
 .znap.prompt() {
   if (( # )); then
-    private repo=~znap/$1
+    private _P__repo=~znap/$1
     [[ $1 == */* ]] &&
-        repo=~[$1]
-    private theme=${2:-${${repo##*/((oh-my-|)zsh-|)}%%((-zsh|)-(prompt|theme)|.zsh)}}
-    .znap.prompt.load $repo $theme
+        _P__repo=~[$1]
+    private _P__theme=${2:-${${_P__repo##*/((oh-my-|)zsh-|)}%%((-zsh|)-(prompt|theme)|.zsh)}}
+    .znap.prompt.load $_P__repo $_P__theme
   fi
 
   ..znap.tput civis # Make cursor invisible.
@@ -26,20 +26,20 @@ autoload -Uz add-zsh-hook add-zle-hook-widget promptinit
   exec 2> $_znap_prompt_tmp  # Redirect std err to tmp file.
 
   promptinit
-  if [[ -n $theme ]]; then
-    prompt_themes+=( $theme )
-    prompt $theme
+  if [[ -n $_P__theme ]]; then
+    prompt_themes+=( $_P__theme )
+    prompt $_P__theme
     ..znap.tput sc  # Save cursor position (overwriting the previous save).
 
-    private precmd=prompt_${theme}_precmd
-    if [[ -n $functions[$precmd] ]]; then
-      $precmd
+    private _P__precmd=prompt_${_P__theme}_precmd
+    if [[ -n $functions[$_P__precmd] ]]; then
+      $_P__precmd
 
-      # Ensure $precmd doesn't get called twice before the first prompt.
-      functions[:znap:$precmd]=$functions[$precmd]
-      eval "$precmd() {
-        functions[$precmd]=\$functions[:znap:$precmd]
-        unfunction :znap:$precmd
+      # Ensure $_P__precmd doesn't get called twice before the first prompt.
+      functions[:znap:$_P__precmd]=$functions[$_P__precmd]
+      eval "$_P__precmd() {
+        functions[$_P__precmd]=\$functions[:znap:$_P__precmd]
+        unfunction :znap:$_P__precmd
       }"
     fi
   fi
diff --git a/functions/.znap.source b/functions/.znap.source
index 9570ee6..a8bf7c1 100644
--- a/functions/.znap.source
+++ b/functions/.znap.source
@@ -8,24 +8,24 @@ if ! (( # )); then
   return $(( sysexits[(i)USAGE] + 63 ))
 fi
 
-private __file= __src= __repo=~[$1]
+private _P__file= _P__src= _P__repo=~[$1]
 shift
 
-for __src in ${@:-''}; do
-  __file=~/.local/bin/${__repo:t}${__src:+.}${__src//\//.}
-  if ! [[ -r $__file:P ]]; then
-    .znap.source.link "$__repo" "$__src" "$__file" ||
+for _P__src in ${@:-''}; do
+  _P__file=~/.local/bin/${_P__repo:t}${_P__src:+.}${_P__src//\//.}
+  if ! [[ -r $_P__file:P ]]; then
+    .znap.source.link "$_P__repo" "$_P__src" "$_P__file" ||
         return
   fi
 
   # Wrap in a named function for profiling purposes.
-  .znap.source:${__file:t}() {
+  .znap.source:${_P__file:t}() {
     . "$1"
   }
   {
-    .znap.source:${__file:t} "$__file:P"
+    .znap.source:${_P__file:t} "$_P__file:P"
   } always {
     TRY_BLOCK_ERROR=
-    unfunction .znap.source:${__file:t}
+    unfunction .znap.source:${_P__file:t}
   }
 done
diff --git a/functions/znap b/functions/znap
index cee253c..159d81b 100644
--- a/functions/znap
+++ b/functions/znap
@@ -13,12 +13,12 @@ if ! (( $# )); then
   return
 fi
 
-private cmd=$1
+private _P__cmd=$1
 shift
 
-case $cmd in
+case $_P__cmd in
   ( cd | ls )
-    print -u2 'znap: try `'"$cmd ~${${1:+[$1]}:-znap}"'` instead'
+    print -u2 'znap: try `'"$_P__cmd ~${${1:+[$1]}:-znap}"'` instead'
     return $(( sysexits[(i)USAGE] + 63 ))
   ;;
   ( path )
@@ -34,15 +34,15 @@ esac
 local -A opts_pre=() opts_post=()
 zparseopts -A opts_post -D -- h -help
 
-private func=.znap.$cmd
-if [[ -v functions[$func] ]]; then
+private _P__func=.znap.$_P__cmd
+if [[ -v functions[$_P__func] ]]; then
   if (( ${#opts_pre} || ${#opts_post} )); then
-    .znap.help $cmd
+    .znap.help $_P__cmd
   else
-    $func $@
+    $_P__func $@
   fi
 else
-  print -u2 "znap: unknown command: $cmd"
+  print -u2 "znap: unknown command: $_P__cmd"
   .znap.help
   return $(( sysexits[(i)USAGE] + 63 ))
 fi