-(defcustom filesets-cache-fill-content-hooks nil
- "Hooks to run when writing the contents of filesets' cache file.
+(define-obsolete-variable-alias 'filesets-cache-fill-content-hooks
+ 'filesets-cache-fill-content-hook "24.3")
+(defcustom filesets-cache-fill-content-hook nil
+ "Hook run when writing the contents of filesets' cache file.