On Wed, 31 Aug 2022 13:30:14 -0500, Walt Farrell wrote: > >>But it might be proper to emphasize any difference between DFSORT's use of >>reg-ex and traditional beliefs. > >But, whose "tradition"? PERL, PCRE, Python, Boost, ... > >Does the DFSORT documentation name a standard that they've implemented? > Several. "The great thing about standards ...". From the Guide: Regular expressions This support is based on the following Standards /Extensions: • XPG4 (X/Open Common Applications Environment Specification, System Interfaces and Headers, Issue 4.) • XPG4.2 (X/Open Common Applications Environment Specification, System Interfaces and Headers, Issue 4, Version 2.) • Single UNIX Specification, Version 3 (IEEE Std 1003.1-2001.) • z/OS UNIX (functions that provide z/OS UNIX support beyond the defined standards.) Two versions of regular expressions are supported: • Basic Regular expressions (BRE) • Extended Regular expressions (ERE)
I don't see where the Guide tells how the programmer may choose between BRE and ERE. (But it does provide the REH extension.) They didn't mention XLC/C++, probably the underlying support. -- Thanks, gil ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
