Module Name:	src
Committed By:	dean
Date:		Tue Feb  9 04:51:30 UTC 1999

Modified Files:
	src/usr.bin/mail: cmd1.c cmd3.c lex.c main.c
Log Message:
fixes for PR 3886, 4719, 5424
mail is more consistent in a su'd environment
unset works if the variable is in the environment
fixed off by one error with 'z' scrolling