Check for IO errors after running a command

diff --git a/Documentation/diff-options.txt b/Documentation/diff-options.txt
index 1689c748171a8ff48395cf432aabe0130fc6b8d2..0f07c9c4a86df8ac2d7ab2f99e31226e395b63ab 100644 (file)
--- a/Documentation/diff-options.txt
+++ b/Documentation/diff-options.txt
@@ -86,7 +86,7 @@
        Detect renames.
 
 -C::
-       Detect copies as well as renames.
+       Detect copies as well as renames.  See also `--find-copies-harder`.
 
 --diff-filter=[ACDMRTUXB*]::
        Select only files that are Added (`A`), Copied (`C`),
@@ -100,12 +100,13 @@
        that matches other criteria, nothing is selected.
 
 --find-copies-harder::
-       For performance reasons, by default, -C option finds copies only 
-       if the original file of the copy was modified in the same 
+       For performance reasons, by default, `-C` option finds copies only
+       if the original file of the copy was modified in the same
        changeset.  This flag makes the command
        inspect unmodified files as candidates for the source of
        copy.  This is a very expensive operation for large
-       projects, so use it with caution.
+       projects, so use it with caution.  Giving more than one
+       `-C` option has the same effect.
 
 -l<num>::
        -M and -C options require O(n^2) processing time where n