Warnings of dangling .el with bracket-less nesting

[Jim Avera]

The following code operates correctly in all cases but warns about 
"unbalanced .el request" if either the first or second condition is true 
(with -w all).

The warnings do not happen if the "else" statements are wrapped in \{\ 
... \} but is this supposed to be necessary?   The conditionals all seem 
to actually work correctly, in spite of the warnings.   Are the warnings 
a bug?

-Jim

#!/bin/sh
groff -w all >/dev/null <<'EOF'
.de mymac
.  tm1 "--- mymac called with '\\$1' ---
.  ie '\\$1'a' .tm1 "  CASE a
.  el .ie '\\$1'b' .tm1 "  CASE b
.  el .ie '\\$1'c' .tm1 "  CASE c
.  el .tm1 "  Got something else (\\$1)
..
.mymac a
.mymac b
.mymac c
.mymac d
EOF