notmuch show: Avoid segmentation for message with no subject.

[notmuch] / lib / notmuch.h

diff --git a/lib/notmuch.h b/lib/notmuch.h
index bab573dd4b22ad8b407a7d7dc16e2ba83e4a01d0..40a1dca7e1cab7467c90372f330848733fba1056 100644 (file)
--- a/lib/notmuch.h
+++ b/lib/notmuch.h
@@ -114,19 +114,6 @@ typedef struct _notmuch_messages notmuch_messages_t;
 typedef struct _notmuch_message notmuch_message_t;
 typedef struct _notmuch_tags notmuch_tags_t;
 
-/* Lookup the default database path.
- *
- * This is the path that will be used by notmuch_database_create and
- * notmuch_database_open if given a NULL path. Specifically it will be
- * the value of the NOTMUCH_BASE environment variable if set,
- * otherwise ${HOME}/mail
- *
- * Returns a newly allocated string which the caller should free()
- * when finished with it.
- */
-char *
-notmuch_database_default_path (void);
-
 /* Create a new, empty notmuch database located at 'path'.
  *
  * The path should be a top-level directory to a collection of
@@ -134,11 +121,6 @@ notmuch_database_default_path (void);
  * create a new ".notmuch" directory within 'path' where notmuch will
  * store its data.
  *
- * Passing a value of NULL for 'path' will cause notmuch to open the
- * default database. The default database path can be specified by the
- * NOTMUCH_BASE environment variable, and is equivalent to
- * ${HOME}/mail if NOTMUCH_BASE is not set.
- *
  * After a successful call to notmuch_database_create, the returned
  * database will be open so the caller should call
  * notmuch_database_close when finished with it.
@@ -157,7 +139,7 @@ notmuch_database_create (const char *path);
 /* XXX: I think I'd like this to take an extra argument of
  * notmuch_status_t* for returning a status value on failure. */
 
-/* Open a an existing notmuch database located at 'path'.
+/* Open an existing notmuch database located at 'path'.
  *
  * The database should have been created at some time in the past,
  * (not necessarily by this process), by calling
@@ -166,11 +148,6 @@ notmuch_database_create (const char *path);
  * An existing notmuch database can be identified by the presence of a
  * directory named ".notmuch" below 'path'.
  *
- * Passing a value of NULL for 'path' will cause notmuch to open the
- * default database. The default database path can be specified by the
- * NOTMUCH_BASE environment variable, and is equivalent to
- * ${HOME}/mail if NOTMUCH_BASE is not set.
- *
  * The caller should call notmuch_database_close when finished with
  * this database.
  *
@@ -641,8 +618,8 @@ notmuch_message_get_date  (notmuch_message_t *message);
  * modified or freed by the caller (nor should it be referenced after
  * the message is destroyed).
  *
- * Returns NULL if the message does not contain a header line matching
- * 'header' of if any error occurs.
+ * Returns an empty string ("") if the message does not contain a
+ * header line matching 'header'. Returns NULL if any error occurs.
  */
 const char *
 notmuch_message_get_header (notmuch_message_t *message, const char *header);