~emersion/mrsh

ref: 07e65a3a88e03c6d9e6f1f6ac4a1cfa9a74a9b09 mrsh/array.c -rw-r--r-- 860 bytes
shell: fix words only expanded once

Fixes #35
array: fix write past end of array
Execute instructions line by line
Add nodes to AST
Start building AST