.ig
This is like the "shift" test except that the .shift request occurs
in a file that's .so'd from within the macro, to verify that .shift
works even if the macro isn't the most recent input source.
..
.cp 0
.de shift-test
.sp
Number of arguments: \\n[.$]
.br
Arguments: \\$@
.if \\n[.$] \{\
.br
Recursing...
.so shift2b
.shift-test \\$@
.\}
..
.\"
.shift-test a b "two words" "" xyz
