docs: mention trace2 target-dir mode in git-config
Move the description of trace2's target-directory behavior into the
shared trace2-target-values file so that it is included in both the
git-config and api-trace2 docs. Leave the SID discussion only in
api-trace2 since it's a technical detail.
Signed-off-by: Josh Steadmon <steadmon@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/Documentation/trace2-target-values.txt b/Documentation/trace2-target-values.txt
index 27d3c64..3985b6d 100644
--- a/Documentation/trace2-target-values.txt
+++ b/Documentation/trace2-target-values.txt
@@ -2,7 +2,9 @@
* `0` or `false` - Disables the target.
* `1` or `true` - Writes to `STDERR`.
* `[2-9]` - Writes to the already opened file descriptor.
-* `<absolute-pathname>` - Writes to the file in append mode.
+* `<absolute-pathname>` - Writes to the file in append mode. If the target
+already exists and is a directory, the traces will be written to files (one
+per process) underneath the given directory.
* `af_unix:[<socket_type>:]<absolute-pathname>` - Write to a
Unix DomainSocket (on platforms that support them). Socket
type can be either `stream` or `dgram`; if omitted Git will
