Re: Shell confusion over positional argumentsX

[Ken Hornstein <kenh%pobox.com@localhost>]

>>Hello.  A /bin/sh script I wrote about 10 years ago under NetBSD-5
>>broke under NetbSD-10.99.12.  The issue seems to be a change in the way
>>command line arguments are assigned to the $number variables, i.e. $1,
>>$2, $3, etc.
>
>Looks to me like $11 is being interpreted as ${1}1.  I wonder what ${11}
>comes out as?

Following up to myself, from section 2.5.1 of:

https://pubs.opengroup.org/onlinepubs/9699919799/utilities/V3_chap02.html#tag_18_06_02

  When a positional parameter with more than one digit is specified,
  the application shall enclose the digits in braces (see Parameter
  Expansion).

--Ken