Documentation: document the pager.* configuration setting

diff --git a/Documentation/git-update-index.txt b/Documentation/git-update-index.txt
index 6b930bc16303e6a17554a551badfe01febaf3ca1..1d9d81a702d26706047ae6ea29b4ca62ebe59460 100644 (file)
--- a/Documentation/git-update-index.txt
+++ b/Documentation/git-update-index.txt
@@ -323,6 +323,11 @@ from symbolic link to regular file.
 The command looks at `core.ignorestat` configuration variable.  See
 'Using "assume unchanged" bit' section above.
 
+The command also looks at `core.trustctime` configuration variable.
+It can be useful when the inode change time is regularly modified by
+something outside Git (file system crawlers and backup systems use
+ctime for marking files processed) (see linkgit:git-config[1]).
+
 
 SEE ALSO
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