run-command.c: print env vars in trace_run_command()

Occasionally submodule code could execute new commands with GIT_DIR set
to some submodule. GIT_TRACE prints just the command line which makes it
hard to tell that it's not really executed on this repository.

Print the env delta (compared to parent environment) in this case.

Helped-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Nguyễn Thái Ngọc Duy
2018-01-18 16:45:11 +07:00
committed by Junio C Hamano
parent 21dfc5e08f
commit c61a975df1
3 changed files with 109 additions and 0 deletions

View File

@ -141,4 +141,41 @@ test_expect_success 'run_command outputs ' '
test_cmp expect actual
'
test_trace () {
expect="$1"
shift
GIT_TRACE=1 test-run-command "$@" run-command true 2>&1 >/dev/null | \
sed 's/.* run_command: //' >actual &&
echo "$expect true" >expect &&
test_cmp expect actual
}
test_expect_success 'GIT_TRACE with environment variables' '
test_trace "abc=1 def=2" env abc=1 env def=2 &&
test_trace "abc=2" env abc env abc=1 env abc=2 &&
test_trace "abc=2" env abc env abc=2 &&
(
abc=1 && export abc &&
test_trace "def=1" env abc=1 env def=1
) &&
(
abc=1 && export abc &&
test_trace "def=1" env abc env abc=1 env def=1
) &&
test_trace "def=1" env non-exist env def=1 &&
test_trace "abc=2" env abc=1 env abc env abc=2 &&
(
abc=1 def=2 && export abc def &&
test_trace "unset abc def;" env abc env def
) &&
(
abc=1 def=2 && export abc def &&
test_trace "unset def; abc=3" env abc env def env abc=3
) &&
(
abc=1 && export abc &&
test_trace "unset abc;" env abc=2 env abc
)
'
test_done