The termcap linux console entry contains incorrect strings for as
& ae (enter & exit alternate charset) which cause curses line-drawing
to appear as the original characters.

Using "tput smacs" and "tput rmacs" on my Linux machine, I found
the correct strings, ^N and ^O. With the following patch I was able
to correctly render curses line-drawing.

--- /usr/share/misc/termcap	2017-08-06 19:08:54.038974000 -0400
+++ termcap	2018-08-05 14:23:36.643969000 -0400
@@ -4567,7 +4567,7 @@
 	:co#80:it#8:li#25:\
 	:pa#64:Co#8:AF=\E[3%dm:AB=\E[4%dm:op=\E[39;49m:\
 	:AL=\E[%dL:DC=\E[%dP:DL=\E[%dM:K2=\E[G:\
-	:ae=\E[10m:al=\E[L:as=\E[11m:bl=^G:cd=\E[J:ce=\E[K:\
+	:ae=^O:al=\E[L:as=^N:bl=^G:cd=\E[J:ce=\E[K:\
 	:cl=\E[H\E[J:cm=\E[%i%d;%dH:cr=^M:cs=\E[%i%d;%dr:\
 	:ct=\E[3g:dc=\E[P:dl=\E[M:do=^J:ei=\E[4l:ho=\E[H:\
 	:im=\E[4h:k1=\E[[A:k2=\E[[B:k3=\E[[C:k4=\E[[D:k5=\E[[E:\