I installed this in response to a glitch with "set -" in coreutils:
2005-04-29 Paul Eggert <[EMAIL PROTECTED]>
* doc/autoconf.texi (Limitations of Builtins): Describe "set -"
problems.
--- autoconf.texi 29 Apr 2005 19:22:57 -0000 1.890
+++ autoconf.texi 29 Apr 2005 22:10:30 -0000 1.892
@@ -11180,9 +11180,14 @@ processing as soon as a non-option argum
set x $my_list; shift
@end example
-Some shells have the "opposite" problem of not recognizing all options
+Avoid @samp{set -}, e.g., @samp{set - $my_list}. Posix no
+longer requires support for this command, and in traditional shells
[EMAIL PROTECTED] - $my_list} resets the @samp{-v} and @samp{-x} options, which
+makes scripts harder to debug.
+
+Some nonstandard shells do not recognize more than one option
(e.g., @samp{set -e -x} assigns @samp{-x} to the command line). It is
-better to elide these:
+better to combine them:
@example
set -ex
