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-rw-r--r--Documentation/git.txt52
1 files changed, 50 insertions, 2 deletions
diff --git a/Documentation/git.txt b/Documentation/git.txt
index 00156d64aa..81f7ecd52c 100644
--- a/Documentation/git.txt
+++ b/Documentation/git.txt
@@ -56,7 +56,8 @@ help ...`.
Run as if git was started in '<path>' instead of the current working
directory. When multiple `-C` options are given, each subsequent
non-absolute `-C <path>` is interpreted relative to the preceding `-C
- <path>`.
+ <path>`. If '<path>' is present but empty, e.g. `-C ""`, then the
+ current working directory is left unchanged.
+
This option affects options that expect path name like `--git-dir` and
`--work-tree` in that their interpretations of the path names would be
@@ -536,7 +537,6 @@ other
The command-line parameters passed to the configured command are
determined by the ssh variant. See `ssh.variant` option in
linkgit:git-config[1] for details.
-
+
`$GIT_SSH_COMMAND` takes precedence over `$GIT_SSH`, and is interpreted
by the shell, which allows additional arguments to be included.
@@ -661,6 +661,54 @@ of clones and fetches.
When a curl trace is enabled (see `GIT_TRACE_CURL` above), do not dump
data (that is, only dump info lines and headers).
+`GIT_TRACE2`::
+ Enables more detailed trace messages from the "trace2" library.
+ Output from `GIT_TRACE2` is a simple text-based format for human
+ readability.
++
+If this variable is set to "1", "2" or "true" (comparison
+is case insensitive), trace messages will be printed to
+stderr.
++
+If the variable is set to an integer value greater than 2
+and lower than 10 (strictly) then Git will interpret this
+value as an open file descriptor and will try to write the
+trace messages into this file descriptor.
++
+Alternatively, if the variable is set to an absolute path
+(starting with a '/' character), Git will interpret this
+as a file path and will try to append the trace messages
+to it. If the path already exists and is a directory, the
+trace messages will be written to files (one per process)
+in that directory, named according to the last component
+of the SID and an optional counter (to avoid filename
+collisions).
++
+In addition, if the variable is set to
+`af_unix:[<socket_type>:]<absolute-pathname>`, Git will try
+to open the path as a Unix Domain Socket. The socket type
+can be either `stream` or `dgram`.
++
+Unsetting the variable, or setting it to empty, "0" or
+"false" (case insensitive) disables trace messages.
++
+See link:technical/api-trace2.html[Trace2 documentation]
+for full details.
+
+
+`GIT_TRACE2_EVENT`::
+ This setting writes a JSON-based format that is suited for machine
+ interpretation.
+ See `GIT_TRACE2` for available trace output options and
+ link:technical/api-trace2.html[Trace2 documentation] for full details.
+
+`GIT_TRACE2_PERF`::
+ In addition to the text-based messages available in `GIT_TRACE2`, this
+ setting writes a column-based format for understanding nesting
+ regions.
+ See `GIT_TRACE2` for available trace output options and
+ link:technical/api-trace2.html[Trace2 documentation] for full details.
+
`GIT_REDACT_COOKIES`::
This can be set to a comma-separated list of strings. When a curl trace
is enabled (see `GIT_TRACE_CURL` above), whenever a "Cookies:" header