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-rw-r--r--whatis.113
1 files changed, 12 insertions, 1 deletions
diff --git a/whatis.1 b/whatis.1
index 0537bbaf..09dcb9ce 100644
--- a/whatis.1
+++ b/whatis.1
@@ -111,11 +111,22 @@ as follows:
.Sh ENVIRONMENT
.Bl -tag -width Ds
.It Ev MANPATH
-Colon-separated paths overriding the default list of paths searched for
+Colon-separated paths modifying the default list of paths searched for
manual databases.
Invalid paths, or paths without manual databases, are ignored.
Overridden by
.Fl M .
+If
+.Ev MANPATH
+begins with a
+.Sq \&: ,
+it is appended to the default list;
+else if it ends with
+.Sq \&: ,
+it is prepended to the default list; else if it contains
+.Sq \&:: ,
+the default list is inserted between the colons.
+If none of these conditions are met, it overrides the default list.
.El
.Sh FILES
.Bl -tag -width "/etc/man.conf" -compact