Say when --track is useful in the git-checkout docs.

diff --git a/Documentation/diff-options.txt b/Documentation/diff-options.txt
index 0f07c9c4a86df8ac2d7ab2f99e31226e395b63ab..b1f528ae8864e429a509365a79d16bb8341620e1 100644 (file)
--- a/Documentation/diff-options.txt
+++ b/Documentation/diff-options.txt
@@ -4,6 +4,13 @@
 -u::
        Synonym for "-p".
 
+-U<n>::
+       Shorthand for "--unified=<n>".
+
+--unified=<n>::
+       Generate diffs with <n> lines of context instead of
+       the usual three. Implies "-p".
+
 --raw::
        Generate the raw format.
 
@@ -36,7 +43,9 @@
        Synonym for "-p --stat".
 
 -z::
-       \0 line termination on output
+       NUL-line termination on output.  This affects the --raw
+       output field terminator.  Also output from commands such
+       as "git-log" will be delimited with NUL between commits.
 
 --name-only::
        Show only names of changed files.
@@ -168,5 +177,13 @@
 --quiet::
        Disable all output of the program. Implies --exit-code.
 
+--ext-diff::
+       Allow an external diff helper to be executed. If you set an
+       external diff driver with gitlink:gitattributes[5], you need
+       to use this option with gitlink:git-log[1] and friends.
+
+--no-ext-diff::
+       Disallow external diff drivers.
+
 For more detailed explanation on these common options, see also
 link:diffcore.html[diffcore documentation].