On Wed, 6 Jun 2018 18:02:13 +0000, Seymour J Metz wrote: >>Except, does support of DSN=&TMP antedate any support of symbols in JCL, >> not only by SET but also as PROC parameters? > >Yes. Bitsavers is your friend. ><http://bitsavers.org/pdf/ibm/360/os/R01-08/C28-6539-4_OS_JCL_Mar67.pdf> > OK. That says use DSNAME=&name. R21.7 and later say use DSNAME=&&dsname. What happens if JCL performs symbol substitution? For example
// SET A1='&TEMP' // SET A2='&&TEMP' //* //STEP EXEC PGM=IEFBR14 //D1 DD DSN=&A1 * Should be unsupported; only one ampersand after substitution. //D1 DD DSN=&A2 * Should be accepted; two ampersands after substitution. There's been enough confusion among experts in this forum that a clarifying RCF seems appropriate. The existing doc antedates and takes scant account of symbol substitution -- gil ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
