Keep in mind that wiki is a mixed bag; its emphasis of secondary sources over 
primary sources tends to damage its reliability. Also, the URL you gave was for 
PL/I rather than for REXX.


--
Shmuel (Seymour J.) Metz
http://mason.gmu.edu/~smetz3

________________________________________
From: IBM Mainframe Discussion List <[email protected]> on behalf of 
David Crayford <[email protected]>
Sent: Thursday, January 10, 2019 10:17 PM
To: [email protected]
Subject: Re: Unreadable code (Was: Concurrent Server Task Dispatch issue 
multitasking issue)

On 11/01/2019 10:27 am, Paul Gilmartin wrote:
> Semicolons, yes, but:
>      do     <=> {
>      end    <=> }
>      switch <=> SELECT
>      ...
> I think Rexx got much of its lexical flavor from PL/I.  But that's easy for
> me to say becase I don't know PL/I.

 From Wiki "Rexx was also intended by its creator to be a simplified and
easier to learn version of the PL/I 
<https://secure-web.cisco.com/1T_zgNKTuiHHGZ-wMhMaY_Aq4goia3Y_0KIobX6TulyJSMMRpbNpl1BiSRozYv5QnZ4qXwAfPti4QlNm3jf6HtWswKG1xmXYLtRhUjMO0-JCZCDtOl_K_8wkSiHk10oiTsbp-aIQVHijMmECoAVrxktx-DswOhB0oEYg_Ct-6VQNyrYDTdcKX0F7h0eelJePTAzG_E7rW-K6KM6ngnOnJ1QWSvNtaYKO9nzsjOWB57W2p794YBikUCJIrNK3QmAtPU6w4uEESwor3KDkeh3-PERBKoJeex8DWg2m6VURvVuCccl6E7-zaO9Akap-x56aaoE5KvrHG8nNNIFVrof74ze8UNI7rvSX210wS9wR148bhlNmArH-p82RCei8JArZMVAqqY0vMeEDhPzU8OAn2E5He3DqyxHjAU77Ds2kpCug2WVxiUU4bKnKdykTwtR5b/https%3A%2F%2Fen.wikipedia.org%2Fwiki%2FPL%2FI>
programming language"

I agree with Steve. There is very little similarity between REXX and C.
A case in point would be short circuit evaluation which is fundamental
to C and
sadly lacking in REXX. There are some similarities between a language
like JavaScript and C because of the lineage of most curly bracket
languages.


>> On Thu, Jan 10, 2019 at 6:48 PM Steve Smith wrote:
>>
>>> REXX is lot like C?  I can't think of anything they have in common beyond
>>> the minimum basics of any procedural language.
> Bless Rexx for making ';' and newline very nearly interchangeable, in contrast
> to POSIX Shell script, where they aren't.
>
> -- gil
>
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