doc: clarify "config --bool" behaviour with empty string
commit7f0a02be2f2712f66daa730e389f45e3e96f1edd
authorAndreas Heiduk <asheiduk@gmail.com>
Mon, 14 Aug 2017 22:12:18 +0000 (15 00:12 +0200)
committerJunio C Hamano <gitster@pobox.com>
Mon, 14 Aug 2017 22:47:56 +0000 (14 15:47 -0700)
tree29283dc443852273f63c48f04bf8fa39f3ac1ca5
parent3b827444811d7eddeddd44850f5dbbb4d59747f5
doc: clarify "config --bool" behaviour with empty string

`git config --bool xxx.yyy` returns `true` for `[xxx]yyy` but
`false` for `[xxx]yyy=` or `[xxx]yyy=""`.  This is tested in
t1300-repo-config.sh since 09bc098c2.

Signed-off-by: Andreas Heiduk <asheiduk@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Documentation/config.txt
Documentation/git.txt