-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 According to Eric Blake on 8/12/2005 7:20 AM: > According to Eric Blake on 7/23/2005 7:14 AM: > >>>The following patch, to both readline and bash, allows readline to export >>>a hook (rather than trying to import a function, which doesn't work in >>>dynamic libraries for at least cygwin), so that bash can then override >>>getenv() even within the context of a dynamic readline library. It fixes >>>not only tilde expansion (HOME), but also other uses of sh_get_env_value, >>>where readline needs to read environment variables from bash, rather than >>>the original program environ: INPUTRC, LC_ALL, LANG, EMACS, TERM, COLUMNS, >>>and LINES. > > > [Patch is available at > http://lists.gnu.org/archive/html/bug-bash/2005-07/msg00135.html] > > This patch is still needed with bash-3.1-alpha, when dynamically linked > against readline-5.1-alpha. Even with the bash-3.1 trick of setting > environ, cygwin's getenv() does not track the new environ from within the > shared library.
Actually, setting the environ works, it is just not done enough. So a simpler patch may be finding the extra places where environ needs to be set so that the readline library will see the new environment: $ echo $HOME /home/eblake $ ./bash --version GNU bash, version 3.1.0(1)-alpha1 (i686-pc-cygwin) Copyright (C) 2005 Free Software Foundation, Inc. $ ./bash -c 'HOME=/; /bin/echo -n; echo ~' / $ ./bash -c 'HOME=/; echo -n; echo ~' /home/eblake Notice that 3.1-alpha is currently setting environ just before executing a disk command, but not after changing an assignment of one of the variables that readline cares about. If only built-in commands are executed between the change in the variable, then environ is not updated, and readline's use of the stale environ prints the wrong results. - -- Life is short - so eat dessert first! Eric Blake [EMAIL PROTECTED] -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.1 (Cygwin) Comment: Public key at home.comcast.net/~ericblake/eblake.gpg Comment: Using GnuPG with Thunderbird - http://enigmail.mozdev.org iD8DBQFC/RLA84KuGfSFAYARAv65AJ0WN1KBH81xGQhErt+rjzikwxhHtwCg0LlP 0WYiaS72CQdDIIOa9ypJJEE= =DsR2 -----END PGP SIGNATURE----- _______________________________________________ Bug-bash mailing list Bug-bash@gnu.org http://lists.gnu.org/mailman/listinfo/bug-bash
