config: fail if --get-urlmatch finds no value

diff --git a/Documentation/git-update-index.txt b/Documentation/git-update-index.txt
index aff01798cdf6b114009eae8dfc4f2866a8a24d17..f4e5a85351d7a7fdda24ac497560f59ccdb6ef7b 100644 (file)
--- a/Documentation/git-update-index.txt
+++ b/Documentation/git-update-index.txt
@@ -17,6 +17,8 @@ SYNOPSIS
             [--[no-]assume-unchanged]
             [--[no-]skip-worktree]
             [--ignore-submodules]
+            [--[no-]split-index]
+            [--[no-|force-]untracked-cache]
             [--really-refresh] [--unresolve] [--again | -g]
             [--info-only] [--index-info]
             [-z] [--stdin] [--index-version <n>]
@@ -170,6 +172,20 @@ may not support it yet.
        the shared index file. This mode is designed for very large
        indexes that take a significant amount of time to read or write.
 
+--untracked-cache::
+--no-untracked-cache::
+       Enable or disable untracked cache extension. This could speed
+       up for commands that involve determining untracked files such
+       as `git status`. The underlying operating system and file
+       system must change `st_mtime` field of a directory if files
+       are added or deleted in that directory.
+
+--force-untracked-cache::
+       For safety, `--untracked-cache` performs tests on the working
+       directory to make sure untracked cache can be used. These
+       tests can take a few seconds. `--force-untracked-cache` can be
+       used to skip the tests.
+
 \--::
        Do not interpret any more arguments as options.