Hang on Glenn. The syntax check is fairly old, but not "forever". It is later than the spring of '86, early '87 more likely. Commit was introduced a lot later, in the summer of '90.
On 24 November 2010 15:36, Glenn Knickerbocker <[email protected]> wrote: > On Tue, 23 Nov 2010 07:54:19 -0700, gil wrote: >>Thanks. "commit" isn't really in my vocabulary. I don't think it >>existed when I first brushed against Pipelines, perhaps before SFS >>was a consideration. > > It's always been there. It's what each stage does once it's determined > it can actually run, before any of them process any records. Each stage > checks its syntax, and device drivers check their devices. The latter's > what's going on here: < checks whether it can read the file, and doesn't > commit when it can't. > doesn't erase the old file until it's processed > the new one, and it never gets to the point of processing the new one > because < didn't commit. > > ¬R Blather, Rinse, Repeat. > http://users.bestweb.net/~notr/telecom.html >
