difftool: provide basename to external tools
authorMichael J Gruber <git@drmicha.warpmail.net>
Tue, 14 Dec 2010 09:18:35 +0000 (10:18 +0100)
committerJunio C Hamano <gitster@pobox.com>
Thu, 16 Dec 2010 21:01:36 +0000 (13:01 -0800)
commit4a689afb030c1cd5aa1c141db94bbf9dde42f05e
treee6cb1dd0c3149e47f6bc2187a51ade8057cdd35a
parent51baceeec4884c14ac8c77902ec6973ab36421ca
difftool: provide basename to external tools

Currently, only configured diff helpers get the basename of the file
being compared. Tools specified with "git difftool -x" only get the
names of temporary files for the different versions.

Export BASE so that an external tool can read the name from the
environment. Rather than using a third argument, this avoids breaking
existing scripts which may somewhat carelessly be using "$@" rather than
"$1" "$2".

Signed-off-by: Michael J Gruber <git@drmicha.warpmail.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Documentation/git-difftool.txt
git-difftool--helper.sh