embed.fnc: Clarify that varargs suppresses embed.h

Macro don't have variable numbers of args, hence the entry in embed.h is
suppressed.

diff --git a/embed.fnc b/embed.fnc
index ccfc38a..730691a 100644 (file)
--- a/embed.fnc
+++ b/embed.fnc
@@ -51,7 +51,8 @@
 :      Should always be combined with "X" to be usable from dynamically
 :      loaded extensions.
 :
-:   f  Function takes printf style format string, varargs:
+:   f  Function takes printf style format string, varargs (hence any entry that
+:      would otherwise go in embed.h is suppressed):
 :
 :         proto.h: add __attribute__format__ (or ...null_ok__)
 :