GIT_PREFIX was added in 7cf16a14f5c070f7b14cf28023769450133172ae so that
aliases can know the directory from which a !alias was called.
Knowing the prefix relative to the root is helpful in other programs
so export it to built-ins as well.
Signed-off-by: David Aguilar <davvid@xxxxxxxxx>
---
setup.c | 6 ++++++
t/t1020-subdirectory.sh | 16 ++++++++++++++++
2 files changed, 22 insertions(+), 0 deletions(-)
diff --git a/setup.c b/setup.c
index b6e6b5a..fc169a4 100644
--- a/setup.c
+++ b/setup.c
@@ -603,6 +603,12 @@ const char *setup_git_directory_gently(int *nongit_ok)
const char *prefix;
prefix = setup_git_directory_gently_1(nongit_ok);
+ /* Provide the prefix to all external processes and programs */
+ if (prefix)
+ setenv("GIT_PREFIX", prefix, 1);
+ else
+ unsetenv("GIT_PREFIX");
+
if (startup_info) {
startup_info->have_repository = !nongit_ok || !*nongit_ok;
startup_info->prefix = prefix;
diff --git a/t/t1020-subdirectory.sh b/t/t1020-subdirectory.sh
index ddc3921..a85b594 100755
--- a/t/t1020-subdirectory.sh
+++ b/t/t1020-subdirectory.sh
@@ -139,6 +139,22 @@ test_expect_success 'GIT_PREFIX for !alias' '
test_cmp expect actual
'
+test_expect_success 'GIT_PREFIX for built-ins' '
+ # Use GIT_EXTERNAL_DIFF to test that the "diff" built-in
+ # receives the GIT_PREFIX variable.
+ printf "dir/" >expect &&
+ printf "#!/bin/sh\n" >diff &&
+ printf "printf \"\$GIT_PREFIX\"\n" >>diff &&
+ chmod +x diff &&
+ (
+ cd dir &&
+ printf "change" >two &&
+ env GIT_EXTERNAL_DIFF=./diff git diff >../actual
+ git checkout -- two
+ ) &&
+ test_cmp expect actual
+'
+
test_expect_success 'no file/rev ambiguity check inside .git' '
git commit -a -m 1 &&
(
--
1.7.5.2.317.g391b14
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