[Snek] [keith-packard/snek] 191ae1: Support tuple dictionary indices without requiring...

[Keith Packard]

  Branch: refs/heads/tuple-index
  Home:   https://github.com/keith-packard/snek
  Commit: 191ae13a7ca9f5b7cbd45e71d67180a9618f8ddd
      https://github.com/keith-packard/snek/commit/191ae13a7ca9f5b7cbd45e71d67180a9618f8ddd
  Author: Keith Packard <keithp at keithp.com>
  Date:   2021-03-23 (Tue, 23 Mar 2021)

  Changed paths:
    M snek-gram.ll

  Log Message:
  -----------
  Support tuple dictionary indices without requiring parens

This is a syntactic 'feature' of python, allowing tuples to index
dictionaries without requiring that they be enclosed in parens.

	> a = {}
	> a[1,2] = 'hi'
	> a[1,2]
	hi
	>

This consumes a bit of ROM space, and doesn't seem like an important
enough feature to include, so I've left it on a branch.

Signed-off-by: Keith Packard <keithp at keithp.com>