Whether a post-update function is already recorded as run (key_value, post_update); matches the bytes s:<len>:"<fn>";, so a short name cannot match inside a longer one.
key_value
post_update
s:<len>:"<fn>";
Whether a post-update function is already recorded as run (
key_value,post_update); matches the bytess:<len>:"<fn>";, so a short name cannot match inside a longer one.