survive ancient zsh

config/p10k-classic.zsh

@@ -15,15 +15,18 @@
 () {
   emulate -L zsh
   setopt no_unset extended_glob
-  zmodload zsh/langinfo
-  if [[ ${langinfo[CODESET]:-} != (utf|UTF)(-|)8 ]]; then
-    local LC_ALL=${${(@M)$(locale -a):#*.(utf|UTF)(-|)8}[1]:-en_US.UTF-8}
-  fi
 
   # Unset all configuration options. This allows you to apply configiguration changes without
   # restarting zsh. Edit ~/.p10k.zsh and type `source ~/.p10k.zsh`.
   unset -m 'POWERLEVEL9K_*'
 
+  autoload -Uz is-at-least && is-at-least 5.1 || return
+
+  zmodload zsh/langinfo
+  if [[ ${langinfo[CODESET]:-} != (utf|UTF)(-|)8 ]]; then
+    local LC_ALL=${${(@M)$(locale -a):#*.(utf|UTF)(-|)8}[1]:-en_US.UTF-8}
+  fi
+
   # The list of segments shown on the left. Fill it with the most important segments.
   typeset -g POWERLEVEL9K_LEFT_PROMPT_ELEMENTS=(
       # =========================[ Line #1 ]=========================

config/p10k-lean.zsh

@@ -15,15 +15,18 @@
 () {
   emulate -L zsh
   setopt no_unset extended_glob
-  zmodload zsh/langinfo
-  if [[ ${langinfo[CODESET]:-} != (utf|UTF)(-|)8 ]]; then
-    local LC_ALL=${${(@M)$(locale -a):#*.(utf|UTF)(-|)8}[1]:-en_US.UTF-8}
-  fi
 
   # Unset all configuration options. This allows you to apply configiguration changes without
   # restarting zsh. Edit ~/.p10k.zsh and type `source ~/.p10k.zsh`.
   unset -m 'POWERLEVEL9K_*'
 
+  autoload -Uz is-at-least && is-at-least 5.1 || return
+
+  zmodload zsh/langinfo
+  if [[ ${langinfo[CODESET]:-} != (utf|UTF)(-|)8 ]]; then
+    local LC_ALL=${${(@M)$(locale -a):#*.(utf|UTF)(-|)8}[1]:-en_US.UTF-8}
+  fi
+
   # The list of segments shown on the left. Fill it with the most important segments.
   typeset -g POWERLEVEL9K_LEFT_PROMPT_ELEMENTS=(
       # =========================[ Line #1 ]=========================

config/p10k-pure.zsh

@@ -25,6 +25,8 @@
   emulate -L zsh
   setopt no_unset
 
+  autoload -Uz is-at-least && is-at-least 5.1 || return
+
   # Unset all configuration options.
   unset -m 'POWERLEVEL9K_*'
 

config/p10k-rainbow.zsh

@@ -15,15 +15,18 @@
 () {
   emulate -L zsh
   setopt no_unset extended_glob
-  zmodload zsh/langinfo
-  if [[ ${langinfo[CODESET]:-} != (utf|UTF)(-|)8 ]]; then
-    local LC_ALL=${${(@M)$(locale -a):#*.(utf|UTF)(-|)8}[1]:-en_US.UTF-8}
-  fi
 
   # Unset all configuration options. This allows you to apply configiguration changes without
   # restarting zsh. Edit ~/.p10k.zsh and type `source ~/.p10k.zsh`.
   unset -m 'POWERLEVEL9K_*'
 
+  autoload -Uz is-at-least && is-at-least 5.1 || return
+
+  zmodload zsh/langinfo
+  if [[ ${langinfo[CODESET]:-} != (utf|UTF)(-|)8 ]]; then
+    local LC_ALL=${${(@M)$(locale -a):#*.(utf|UTF)(-|)8}[1]:-en_US.UTF-8}
+  fi
+
   # The list of segments shown on the left. Fill it with the most important segments.
   typeset -g POWERLEVEL9K_LEFT_PROMPT_ELEMENTS=(
       # =========================[ Line #1 ]=========================