Merge from trunk.

1 files changed, 4 insertions, 1 deletions

diff --git a/src/gnutls.c b/src/gnutls.c
index 99992e06cdc..a4eeb50bd74 100644
--- a/src/gnutls.c
+++ b/src/gnutls.c
@@ -1121,7 +1121,10 @@ syms_of_gnutls (void)
   defsubr (&Sgnutls_available_p);
 
   DEFVAR_INT ("gnutls-log-level", global_gnutls_log_level,
-              doc: /* Logging level used by the GnuTLS functions.  */);
+              doc: /* Logging level used by the GnuTLS functions.
+Set this larger than 0 to get debug output in the *Messages* buffer.
+1 is for important messages, 2 is for debug data, and higher numbers
+are as per the GnuTLS logging conventions.  */);
   global_gnutls_log_level = 0;
 }