trace2: teach Git to log environment variables
Via trace2, Git can already log interesting config parameters (see the
trace2_cmd_list_config() function). However, this can grant an
incomplete picture because many config parameters also allow overrides
via environment variables.
To allow for more complete logs, we add a new trace2_cmd_list_env_vars()
function and supporting implementation, modeled after the pre-existing
config param logging implementation.
Signed-off-by: Josh Steadmon <steadmon@google.com>
Acked-by: Jeff Hostetler <jeffhost@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/trace2/tr2_sysenv.c b/trace2/tr2_sysenv.c
index 3c3792e..a380dcf 100644
--- a/trace2/tr2_sysenv.c
+++ b/trace2/tr2_sysenv.c
@@ -29,6 +29,8 @@ struct tr2_sysenv_entry {
static struct tr2_sysenv_entry tr2_sysenv_settings[] = {
[TR2_SYSENV_CFG_PARAM] = { "GIT_TRACE2_CONFIG_PARAMS",
"trace2.configparams" },
+ [TR2_SYSENV_ENV_VARS] = { "GIT_TRACE2_ENV_VARS",
+ "trace2.envvars" },
[TR2_SYSENV_DST_DEBUG] = { "GIT_TRACE2_DST_DEBUG",
"trace2.destinationdebug" },
