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+From: David Bremner <david@tethera.net>\r
+To: notmuch@notmuchmail.org\r
+Subject: [Patch v4 5/9] lib/database: add field for last error string\r
+Date: Sat, 14 Mar 2015 18:02:30 +0100\r
+Message-Id: <1426352554-4383-6-git-send-email-david@tethera.net>\r
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+\r
+The idea is to have a logging function setting this string instead of\r
+printing to stderr.\r
+---\r
+ lib/database-private.h | 4 ++++\r
+ lib/database.cc | 7 +++++++\r
+ lib/notmuch.h | 7 +++++++\r
+ 3 files changed, 18 insertions(+)\r
+\r
+diff --git a/lib/database-private.h b/lib/database-private.h\r
+index 6d6fa2c..24243db 100644\r
+--- a/lib/database-private.h\r
++++ b/lib/database-private.h\r
+@@ -154,6 +154,10 @@ struct _notmuch_database {\r
+ unsigned int last_doc_id;\r
+ uint64_t last_thread_id;\r
+ \r
++ /* error reporting; this value persists only until the\r
++ * next library call. May be NULL */\r
++ char *status_string;\r
++\r
+ Xapian::QueryParser *query_parser;\r
+ Xapian::TermGenerator *term_gen;\r
+ Xapian::ValueRangeProcessor *value_range_processor;\r
+diff --git a/lib/database.cc b/lib/database.cc\r
+index b774edc..48a830f 100644\r
+--- a/lib/database.cc\r
++++ b/lib/database.cc\r
+@@ -873,6 +873,7 @@ notmuch_database_open_verbose (const char *path,\r
+ \r
+ notmuch = talloc_zero (NULL, notmuch_database_t);\r
+ notmuch->exception_reported = FALSE;\r
++ notmuch->status_string = NULL;\r
+ notmuch->path = talloc_strdup (notmuch, path);\r
+ \r
+ if (notmuch->path[strlen (notmuch->path) - 1] == '/')\r
+@@ -2558,3 +2559,9 @@ notmuch_database_get_all_tags (notmuch_database_t *db)\r
+ return NULL;\r
+ }\r
+ }\r
++\r
++const char *\r
++notmuch_database_status_string (notmuch_database_t *notmuch)\r
++{\r
++ return notmuch->status_string;\r
++}\r
+diff --git a/lib/notmuch.h b/lib/notmuch.h\r
+index c671d82..20c4e01 100644\r
+--- a/lib/notmuch.h\r
++++ b/lib/notmuch.h\r
+@@ -302,6 +302,13 @@ notmuch_database_open_verbose (const char *path,\r
+ char **error_message);\r
+ \r
+ /**\r
++ * Retrieve last status string for given database.\r
++ *\r
++ */\r
++const char *\r
++notmuch_database_status_string (notmuch_database_t *notmuch);\r
++\r
++/**\r
+ * Commit changes and close the given notmuch database.\r
+ *\r
+ * After notmuch_database_close has been called, calls to other\r
+-- \r
+2.1.4\r
+\r