doc hash-function-transition: clarify how older gits die on NewHash

diff --git a/Documentation/git-cat-file.txt b/Documentation/git-cat-file.txt
index fb09cd69d63fec03ad1987970fdbdffe8d8a4339..f90f09b03fae578e867335d1be3ab85d83195f27 100644 (file)
--- a/Documentation/git-cat-file.txt
+++ b/Documentation/git-cat-file.txt
@@ -42,8 +42,9 @@ OPTIONS
        <object>.
 
 -e::
-       Suppress all output; instead exit with zero status if <object>
-       exists and is a valid object.
+       Exit with zero status if <object> exists and is a valid
+       object. If <object> is of an invalid format exit with non-zero and
+       emits an error on stderr.
 
 -p::
        Pretty-print the contents of <object> based on its type.
@@ -168,7 +169,7 @@ If `-t` is specified, one of the <type>.
 
 If `-s` is specified, the size of the <object> in bytes.
 
-If `-e` is specified, no output.
+If `-e` is specified, no output, unless the <object> is malformed.
 
 If `-p` is specified, the contents of <object> are pretty-printed.