why no mention of "hooks.allownonascii" in any man page?

["Robert P. J. Day" <rpjday@crashcourse.ca>]

  was just perusing the sample hook scripts, and the sample pre-commit
script provided with git does the following check:

# If you want to allow non-ASCII filenames set this variable to true.
allownonascii=$(git config --bool hooks.allownonascii)

  but that config variable (hooks.allownonascii) is not mentioned in
any man page. its entire existence in the git code base consists of:

$ grep -r allownonascii *
templates/hooks--pre-commit.sample:allownonascii=$(git config --bool hooks.allownonascii)
templates/hooks--pre-commit.sample:if [ "$allownonascii" != "true" ] &&
templates/hooks--pre-commit.sample:  git config hooks.allownonascii true

  technically, there's nothing wrong with that, i just thought it was
a bit weird that a sample hook script refers to a config variable that
is not referred to in any way elsewhere.

  should i care?

rday