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+From: David Bremner <david@tethera.net>\r
+To: notmuch@notmuchmail.org\r
+Subject: [PATCH 3/8] cli: let the user know which protocol is unknown or\r
+ unsupported\r
+Date: Sun, 16 Aug 2015 19:41:11 +0200\r
+Message-Id: <1439746876-23654-4-git-send-email-david@tethera.net>\r
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+\r
+From: Jani Nikula <jani@nikula.org>\r
+\r
+The current error message is not helpful.\r
+---\r
+ crypto.c | 3 ++-\r
+ 1 file changed, 2 insertions(+), 1 deletion(-)\r
+\r
+diff --git a/crypto.c b/crypto.c\r
+index f415abd..11c167e 100644\r
+--- a/crypto.c\r
++++ b/crypto.c\r
+@@ -67,7 +67,8 @@ notmuch_crypto_get_context (notmuch_crypto_t *crypto, const char *protocol)\r
+ return protocols[i].get_context (crypto);\r
+ }\r
+ \r
+- fprintf (stderr, "Unknown or unsupported cryptographic protocol.\n");\r
++ fprintf (stderr, "Unknown or unsupported cryptographic protocol %s.\n",\r
++ protocol);\r
+ \r
+ return NULL;\r
+ }\r
+-- \r
+2.5.0\r
+\r