fix base directory detection for makewhatis -t

1 files changed, 15 insertions, 1 deletions

diff --git a/mandocdb.c b/mandocdb.c
index ba7dda30..6fa441bf 100644
--- a/mandocdb.c
+++ b/mandocdb.c
@@ -1,4 +1,4 @@
-/*	$Id: mandocdb.c,v 1.238 2017/01/27 00:56:32 schwarze Exp $ */
+/*	$Id: mandocdb.c,v 1.239 2017/01/27 01:04:25 schwarze Exp $ */
 /*
  * Copyright (c) 2011, 2012 Kristaps Dzonsons <kristaps@bsd.lv>
  * Copyright (c) 2011-2017 Ingo Schwarze <schwarze@openbsd.org>
@@ -872,6 +872,20 @@ filescan(const char *file)
 	}
 
 	/*
+	 * In test mode or when the original name is absolute
+	 * but outside our tree, guess the base directory.
+	 */
+
+	if (op == OP_TEST || (start == buf && *start == '/')) {
+		if (strncmp(buf, "man/", 4) == 0)
+			start = buf + 4;
+		else if ((start = strstr(buf, "/man/")) != NULL)
+			start += 5;
+		else
+			start = buf;
+	}
+
+	/*
 	 * First try to guess our directory structure.
 	 * If we find a separator, try to look for man* or cat*.
 	 * If we find one of these and what's underneath is a directory,