commit bash-20080424 snapshot

doc/bashref.texi

@@ -2301,7 +2301,12 @@ pathnames of executable files to avoid multiple @env{PATH} searches
 (see the description of @code{hash} in @ref{Bourne Shell Builtins}).
 A full search of the directories in @env{$PATH}
 is performed only if the command is not found in the hash table.
-If the search is unsuccessful, the shell prints an error
+If the search is unsuccessful, the shell searches for a defined shell
+function named @code{command_not_found_handle}.
+If that function exists, it is invoked with the original command and
+the original command's arguments as its arguments, and the function's
+exit status becomes the exit status of the shell.
+If that function is not defined, the shell prints an error
 message and returns an exit status of 127.
 
 @item