In PL/I, language keywords are not reserved. Makes for interesting work when writing the lex scanner. Joe McGuckin ViaNet Communications joe@via.net 650-207-0372 cell 650-213-1302 office 650-969-2124 fax > On Nov 24, 2021, at 12:15 PM, Rob Pike wrote: > > I thought it was > > TRY:PROC OPTIONS(MAIN); > DCL (IF,THEN,ELSE) FIXED BINARY (31); > > IF = 1; > THEN = 2; > ELSE = 3; > > IF IF = THEN THEN THEN = IF ; ELSE ELSE IF = THEN = ELSE; > > END TRY; > > But yeah. > > Best to Barry. > > -rob > > On Thu, Nov 25, 2021 at 2:23 AM Richard Salz wrote: >> >> I asked my pal Barry Shein, who many of you know, if he had his PL/1 syntax horror lying around, and he did. He said: "this was tested on the Iron Spring Software PL/1 compiler running on openSuSe Linux (http://www.iron-spring.com/)" >> >> IBM still uses PL/1. Remember, the main definition of "legacy" is "revenue-producing." >> >> TRY:PROC OPTIONS(MAIN); >> DCL (IF,THEN,ELSE) FIXED BINARY (31); >> >> IF = 1; >> THEN = 2; >> ELSE = 3; >> >> IF IF = THEN THEN THEN = IF ; ELSE ELSE = THEN; >> >> END TRY; >>