Add 'filter' attribute and external filter driver definition.
The interface is similar to the custom low-level merge drivers.
First you configure your filter driver by defining 'filter.<name>.*'
variables in the configuration.
filter.<name>.clean filter command to run upon checkin
filter.<name>.smudge filter command to run upon checkout
Then you assign filter attribute to each path, whose name
matches the custom filter driver's name.
Example:
(in .gitattributes)
*.c filter=indent
(in config)
[filter "indent"]
clean = indent
smudge = cat
Signed-off-by: Junio C Hamano <junkio@cox.net>
diff --git a/t/t0021-conversion.sh b/t/t0021-conversion.sh
index ad952c9..bab9ecc 100755
--- a/t/t0021-conversion.sh
+++ b/t/t0021-conversion.sh
@@ -4,8 +4,17 @@
. ./test-lib.sh
+cat <<\EOF >rot13.sh
+tr '[a-zA-Z]' '[n-za-mN-ZA-M]'
+EOF
+chmod +x rot13.sh
+
test_expect_success setup '
+ git config filter.rot13.smudge ./rot13.sh &&
+ git config filter.rot13.clean ./rot13.sh &&
+
{
+ echo "*.t filter=rot13"
echo "*.i ident"
} >.gitattributes &&
