allow setenv with 0 and 1 arugments:
[unix-history] / usr / src / bin / csh / csh.h
1984-12-14 Edward Wangperformance
1984-09-01 Ralph Campbelluse new signal calls instead of compatibility routines.
1983-07-02 Bill Joyinclude fixes
1983-06-12 Sam Lefflerdifferent approach, try signal compatibility package
1983-06-11 Sam Lefflernew signals; no libjobs
1983-02-10 Sam Lefflercleanups from sun
1983-02-04 Sam Leffleruse high precision time calls
1982-12-31 Sam Lefflerfinally works (updated for 4.1c and merged with sun)
1982-05-08 Kirk McKusickupdate to new fs
1982-02-13 Kirk McKusickconvert to new directory format
1981-11-20 Kirk McKusickadd ``history -h >file'' and ``source -h file'' to
1980-10-10 Bill Joydate and time created 80/10/09 12:41:08 by bill