why does "man git-clean" not mention files ignored by core.excludesFile?

  sort of related to my previous post, but in "man git-clean", one
reads:

  -e <pattern>, --exclude=<pattern>
     In addition to those found in .gitignore (per directory)
     and $GIT_DIR/info/exclude, also consider these patterns to
     be in the set of the ignore rules in effect.

  -x
     Don’t use the standard ignore rules read from .gitignore
     (per directory) and $GIT_DIR/info/exclude, but do still use
     the ignore rules given with -e options. This allows
     removing all untracked files, including build products.
     This can be used (possibly in conjunction with git reset)
     to create a pristine working directory to test a clean
     build.

  why is there no mention of files ignored via a user's
core.excludesFile configuration? those sections seem sufficiently
comprehensive to list all of the other ways to ignore files, is there
a reason that that config setting is not mentioned?

rday