users/15864: turn zsh_directory_name into a hook

Functions/Chpwd/.distfiles

@@ -5,4 +5,5 @@ _cdr
 chpwd_recent_add
 chpwd_recent_dirs
 chpwd_recent_filehandler
+zsh_directory_name_cdr
 '

Functions/Chpwd/zsh_directory_name_cdr

@@ -0,0 +1,25 @@
+if [[ $1 = n ]]; then
+  if [[ $2 = <-> ]]; then
+    # Recent directory
+    typeset -ga reply
+    autoload -Uz cdr
+    cdr -r
+    if [[ -n ${reply[$2]} ]]; then
+      reply=(${reply[$2]})
+      return 0
+    else
+      reply=()
+      return 1
+    fi
+  fi
+elif [[ $1 = c ]]; then
+  if [[ $PREFIX = <-> || -z $PREFIX ]]; then
+    typeset -a keys values
+    values=(${${(f)"$(cdr -l)"}/ ##/:})
+    keys=(${values%%:*})
+    _describe -t dir-index 'recent directory index' \
+      values keys -V unsorted -S']'
+    return
+  fi
+fi
+return 1

Functions/Misc/add-zsh-hook

@@ -1,6 +1,6 @@
 # Add to HOOK the given FUNCTION.
 # HOOK is one of chpwd, precmd, preexec, periodic, zshaddhistory,
-# zshexit (the _functions subscript is not required).
+# zshexit, zsh_directory_name (the _functions subscript is not required).
 #
 # With -d, remove the function from the hook instead; delete the hook
 # variable if it is empty.
@@ -15,7 +15,10 @@
 emulate -L zsh
 
 local -a hooktypes
-hooktypes=(chpwd precmd preexec periodic zshaddhistory zshexit)
+hooktypes=(
+  chpwd precmd preexec periodic zshaddhistory zshexit
+  zsh_directory_name
+)
 
 local opt
 local -a autoopts