Fix mandocdb(8) to pass over the type when pruning the database. This

fixed `-d' perpetually adding the same files.  While here, clean up the
code and document it.  Remove -vv (complain if you want it back in).
Document the error messages in a DIAGNOSTICS section of mandocdb(8).

1 files changed, 21 insertions, 3 deletions

diff --git a/mandocdb.8 b/mandocdb.8
index 9e87b9f3..cba2c011 100644
--- a/mandocdb.8
+++ b/mandocdb.8
@@ -86,9 +86,7 @@ from the database in
 .Ar dir
 without truncating it.
 .It Fl v
-Verbose operation.
-Use once to display all files added or removed and twice for keywords as
-well.
+Display all files added or removed to the index.
 .El
 .Pp
 If fatal parse errors are encountered while parsing, the offending file
@@ -230,6 +228,26 @@ Such errors cause
 to exit at once, possibly in the middle of parsing or formatting a file.
 The output databases are corrupt and should be removed .
 .El
+.Sh DIAGNOSTICS
+If the following errors occur, the
+.Nm
+databases should be rebuilt.
+.Bl -diag
+.It "%s: Corrupt database"
+The keyword database file indicated by
+.Pa %s
+is unreadable.
+.It "%s: Corrupt index"
+The index database file indicated by
+.Pa %s
+is unreadable.
+.It "%s: Path too long"
+The file
+.Pa %s
+is too long.
+This usually indicates database corruption or invalid command-line
+arguments.
+.El
 .Sh SEE ALSO
 .Xr man 1 ,
 .Xr btree 3 ,