* doc/autoconf.texi (Special Shell Variables): Mention

ENV, MAIL, MAILPATH, PS1, PS2, PS4.  Index PWD.

* lib/m4sugar/m4sh.m4 (AS_SHELL_SANITIZE): Unset ENV, MAIL,
MAILPATH and set PS1, PS2, PS4 to default values, to work
around bug in pre-3.0 UWIN ksh reported by Bruce Lilly.
For LC_ALL etc, first try to set to "C" as POSIX requires and as
the Autoconf documentation specifies; fall back to "unset" only if
this fails.  Use a shell for-loop for this rather than an m4 loop,
to shorten the output script.

diff --git a/ChangeLog b/ChangeLog
index 86885214bac0892811264f29ba9e68cd730da91b..aa3492bcd1502d0508150f0326c53892cdc2f94b 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,16 @@
+2002-09-01  Paul Eggert  <eggert@twinsun.com>
+
+       * doc/autoconf.texi (Special Shell Variables): Mention
+       ENV, MAIL, MAILPATH, PS1, PS2, PS4.  Index PWD.
+
+       * lib/m4sugar/m4sh.m4 (AS_SHELL_SANITIZE): Unset ENV, MAIL,
+       MAILPATH and set PS1, PS2, PS4 to default values, to work
+       around bug in pre-3.0 UWIN ksh reported by Bruce Lilly.
+       For LC_ALL etc, first try to set to "C" as POSIX requires and as
+       the Autoconf documentation specifies; fall back to "unset" only if
+       this fails.  Use a shell for-loop for this rather than an m4 loop,
+       to shorten the output script.
+
 2002-08-30  Paul Eggert  <eggert@twinsun.com>
 
        * doc/autoconf.texi (Special Shell Variables): Mention POSIX