@let: allow trailing comma.HEADmaster

We allow forms like @let(x,) and @let(x, y=1,) with the
trailing comma. This is helpful for code generators and macros,
which can then treat temporary variables as comma-terminated
items.

* awkgram.y (let_var_list_opt): Add a production which matches a
trailing comma after let_var_list.

* test/let1.awk, test/let1.ok: Test cases.

* doc/gawkt.texi, doc/gawktexi.in:  Trailing comma documented.

* awkgram.c: Regenerated with Bison 3.8.

0 files changed, 0 insertions, 0 deletions