minibuffer-prompt-properties

minibuffer-prompt-properties is a variable defined in `C source code'.
Its value is

(read-only t face minibuffer-prompt)

Original value was


Documentation:
Text properties that are added to minibuffer prompts.
These are in addition to the basic `field' property, and stickiness
properties.

You can customize this variable.

This variable was introduced, or its default value was changed, in version 21.1 of Emacs.