convert less-trivial versions of "write_in_full() != len"

diff --git a/sub-process.c b/sub-process.c
index 86de8d7bfbcd781b50571f867f0669c84093eca3..fcc4832c14f3fdbb41bea12142a8fbf167d2aa55 100644 (file)
--- a/sub-process.c
+++ b/sub-process.c
@@ -181,8 +181,8 @@ static int handshake_capabilities(struct child_process *process,
                        if (supported_capabilities)
                                *supported_capabilities |= capabilities[i].flag;
                } else {
-                       warning("external filter requested unsupported filter capability '%s'",
-                               p);
+                       warning("subprocess '%s' requested unsupported capability '%s'",
+                               process->argv[0], p);
                }
        }