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+From: David Bremner <david@tethera.net>\r
+To: notmuch@notmuchmail.org\r
+Subject: [PATCH 1/4] lib: add passthrough logger function\r
+Date: Fri, 26 Dec 2014 18:42:38 +0100\r
+Message-Id: <1419615761-21581-2-git-send-email-david@tethera.net>\r
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+\r
+As a first step to eliminating all the fprintfs in the library, make a\r
+logger function that just calls fprintf. This is a bit more complex\r
+than needed, because we want to do something more interesting with the\r
+formatted string in the future.\r
+---\r
+ lib/database.cc | 19 +++++++++++++++++++\r
+ lib/notmuch.h | 10 +++++++++-\r
+ 2 files changed, 28 insertions(+), 1 deletion(-)\r
+\r
+diff --git a/lib/database.cc b/lib/database.cc\r
+index 3601f9d..f3c62ee 100644\r
+--- a/lib/database.cc\r
++++ b/lib/database.cc\r
+@@ -916,6 +916,25 @@ notmuch_database_open (const char *path,\r
+ return status;\r
+ }\r
+ \r
++void\r
++notmuch_database_log (notmuch_database_t *notmuch,\r
++ const char *format,\r
++ ...)\r
++{\r
++ va_list va_args;\r
++ const char *message;\r
++ \r
++ va_start (va_args, format);\r
++\r
++ message = talloc_vasprintf (notmuch, format, va_args);\r
++\r
++ /* XXX do something more clever here */\r
++ fputs (message, stderr);\r
++\r
++ talloc_free ((char *)message);\r
++\r
++}\r
++\r
+ notmuch_status_t\r
+ notmuch_database_close (notmuch_database_t *notmuch)\r
+ {\r
+diff --git a/lib/notmuch.h b/lib/notmuch.h\r
+index 220839b..c8c8124 100644\r
+--- a/lib/notmuch.h\r
++++ b/lib/notmuch.h\r
+@@ -279,7 +279,15 @@ notmuch_status_t\r
+ notmuch_database_open (const char *path,\r
+ notmuch_database_mode_t mode,\r
+ notmuch_database_t **database);\r
+-\r
++/**\r
++ * Log a message to where the database is configured to log it\r
++ *\r
++ * Initially this does notmuch interesting, since the output is not\r
++ * yet configurable.\r
++ */\r
++void\r
++notmuch_database_log (notmuch_database_t *notmuch,\r
++ const char *format, ...);\r
+ /**\r
+ * Commit changes and close the given notmuch database.\r
+ *\r
+-- \r
+2.1.3\r
+\r