What is VM, chopped liver? Before REXX there were EXEC2 and EXEC, all before TSO/E had REXX.
-- Shmuel (Seymour J.) Metz http://mason.gmu.edu/~smetz3 ________________________________________ From: IBM Mainframe Discussion List [IBM-MAIN@LISTSERV.UA.EDU] on behalf of CM Poncelet [ponce...@bcs.org.uk] Sent: Saturday, March 21, 2020 5:06 PM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: Does anybody remember CLIST? Try the following in REXX: ARG DEBUG IF DEBUG = 'DEBUG' THEN , TRACE I T = A A = B B = C C = 123 INTERPRET 'SAY "T = "'T /* THIS SHOULD GIVE T = B */ EXIT 0 Then try the following in Clist: PROC 0 SET T = A SET A = B SET B = C SET C = 123 WRITE "T = " &T /* THIS SHOULD GIVE T = A */ WRITE "T = " &&T /* THIS SHOULD GIVE T = B */ WRITE "T = " &&&&T /* THIS SHOULD GIVE T = C */ WRITE "T = " &&&&&&&&T /* THIS SHOULD GIVE T = 123 */ /* I HAVE NO ACCESS TO CLIST HENCE CANNOT VERIFY HOW MANY &'S */ EXIT CODE(&MAXCC) IIRC, IBM's REXX was distributed in 1990. Before that it was Clist. VPUT/VGET SHARED works also in batch TSO jobs, not only in ISPF/PDF. How did I *ever* come to be in that situation? Because I had written my own ISPF/PDF dialog that bypassed IBM's ISR@PRIM etc. "IVP" one. Cheers. On 21/03/2020 01:44, Paul Gilmartin wrote: > On Sat, 21 Mar 2020 00:39:16 +0000, CM Poncelet wrote: > >> No, there is no problem with that. I assume you meant "EXECIO 1 DISKR >> "ddn1" (STEM foo." >> > More likely: "EXECIO * DISKR" ddn1 "(STEM foo." > >> The problem happens e.g. if a variable X contains the names of other >> variables, which in turn contain the names of yet other variables etc. >> etc. which finally - with say names Z1 Z2 Z3 etc. - have values that >> need to be accessed. >> > How did you *ever* come to be in that situation? > >> We can "VPUT X (and all the other variables' names) SHARED" and call an >> > Why drag ISPF into the game? > >> external exec. It issues "VGET X SHARED" and then "VGET "X" SHARED". But >> how does it then VGET the other variables and their values in such way >> that they can be processed? The variable names can be VGET as data, but >> REXX cannot use data - such as names Z1 Z2 Z3 etc. - as names of >> variables (although INTERPRET *might* be able to fix that.) >> > VALUE() should suffice. > >> Clist can allocate variable names dynamically, using &'s, and can then >> use SYSSCAN to control how many &'s are interpreted. Its problem is it >> > Ouch! And such people sneer at C. > >> cannot ADDRESS environments and cannot process binary data, which REXX can. >> > In effect, CLIST can ADDRESS one environment, TSO. > (What are ISPEXEC and ISREDIT? Perhaps TSO subcommands?) > > Are the examples in the ISPF docs still biased toward CLIST rather than Rexx? > > Did CMS ISPF ever recover from the need to: > ADDRESS ISPEXEC ISPEXEC whatever-command? > > -- gil > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN > . > ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
