RE: feature request: indicator of minibuffer-recursion depth

[Drew Adams]

    2) use propertized "[%d]" as depth>1 marker

a. I prefer unpropertized (certainly not `highlight'). There is no need to
make this so prominent. It's been missing altogether for decades with no
disastrous consequences.

b. I prefer "%d) ":

 Find file:
 2) Match also (regexp):
 3) Match also (regexp):

instead of "[%d]":

 Find file:
 [2]Match also (regexp):
 [3]Match also (regexp):

There's no need to enclose the level in brackets (or parens or braces).
There is nothing to its left to separate it from. There is a need, howeve,
to separate it from the prompt. At least a space is needed.