A bit more documentation on Patch.

diff --git a/toys/Config.in b/toys/Config.in
index ee5f3b7..0539c1c 100644 (file)
--- a/toys/Config.in
+++ b/toys/Config.in
@@ -286,8 +286,11 @@ config PATCH
          -R    Reverse patch.
          -u    Ignored (only handles "unified" diffs)
 
-         If a hunk fails to apply to a file, patch discards all changes to
-         that file and prints the failed hunk to stderr.
+         This version of patch only handles unified diffs, and only modifies
+         a file when all all hunks to that file apply.  Patch prints failed
+         hunks to stderr, and exits with nonzero status if any hunks fail.
+
+         A file compared against /dev/null is created/deleted as appropriate.
 
 config PWD
        bool "pwd"