[cvs-nhc98] Three fixes to the hat tools:

[Malcolm Wallace]

malcolm: Wed Aug 14 16:01:42 CEST 2002

Update of /usr/src/master/nhc/src/hat/tools
In directory hinken:/tmp/cvs-serv4485

Modified Files:
	HatObserve.hs observe.c HatTrail.hs LowLevel.hs artutils.c 
	observe.h 
Log Message:
Three fixes to the hat tools:
  * Change global `interrupted' to `hat_interrupted' to avoid a clash
    with a global in ghc's RTS, which caused ^C to terminate the program
    instead of being caught properly.
  * When passing a pattern to hat-observe on the commandline, it must be
    properly quoted, and shell special chars inside the quotes must be
    escaped.
  * Pass the name of the program down into the C routines to improve
    their error-reporting.