config.txt: document add.ignore-errors

Use the description of "--ignore-errors" from git-add.txt as

Signed-off-by: Stephen Boyd <>
Signed-off-by: Junio C Hamano <>
diff --git a/Documentation/config.txt b/Documentation/config.txt
index c06eca4..ae0e5db 100644
--- a/Documentation/config.txt
+++ b/Documentation/config.txt
@@ -438,6 +438,11 @@
 Set this config setting to 'rename' there; However, This will remove the
 check that makes sure that existing object files will not get overwritten.
+	Tells 'git-add' to continue adding files when some files cannot be
+	added due to indexing errors. Equivalent to the '--ignore-errors'
+	option of linkgit:git-add[1].
 	Command aliases for the linkgit:git[1] command wrapper - e.g.
 	after defining "alias.last = cat-file commit HEAD", the invocation