5 Jan
2020
5 Jan
'20
9:16 p.m.
On 1/5/20 3:15 AM, Brantley Coile wrote:
V7 indeed did not have "#" as a comment.
Programs use the ":" command for that, and was careful of what was in the
comment. The ":" command was called SYSNULL in the source.
Later versions of Steve's shell had COMCHAR defined to be a "#" and
tested for that symbol in word(), eating up all the characters until it got to a newline.
The version of Seventh Edition I used to carry around and embed in things had that mod. My
original Seventh did not.
I think the 7th edition shell I have must have those changes, since it
definitely understands `#' comments.
--
``The lyf so short, the craft so long to lerne.'' - Chaucer
``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, UTech, CWRU chet(a)case.edu http://tiswww.cwru.edu/~chet/