doc addition: mention "set -e -x" lossage

[Thien-Thi Nguyen]

2002-04-26  Thien-Thi Nguyen  <address@hidden>

        * doc/autoconf.texi: Mention "set -e -x" lossage
        under node "Limitations of Builtins".

__________________________________________
Index: autoconf.texi
===================================================================
RCS file: /cvsroot/autoconf/autoconf/doc/autoconf.texi,v
retrieving revision 1.620
diff -u -p -w -c -r1.620 autoconf.texi
cvs server: conflicting specifications of output style
*** autoconf.texi       25 Apr 2002 15:32:15 -0000      1.620
--- autoconf.texi       26 Apr 2002 17:39:44 -0000
*************** processing as soon as a non-option argum
*** 9234,9239 ****
--- 9234,9247 ----
  set x $my_list; shift
  @end example
  
+ Some shells have the "opposite" problem of not recognizing all options
+ (e.g., @samp{set -e -x} assigns @samp{-x} to the command line).  It is
+ better to elide these:
+ 
+ @example
+ set -ex
+ @end example
+ 
  
  @item @command{shift}
  @c ------------------