read -d on a terminal

[Stephane Chazelas]

Configuration Information [Automatically generated, do not change]:
Machine: i486
OS: linux-gnu
Compiler: gcc
Compilation CFLAGS:  -DPROGRAM='bash' -DCONF_HOSTTYPE='i486' 
-DCONF_OSTYPE='linux-gnu' -DCONF_MACHTYPE='i486-pc-linux-gnu' 
-DCONF_VENDOR='pc' -DLOCALEDIR='/usr/share/locale' -DPACKAGE='bash' -DSHELL 
-DHAVE_CONFIG_H   -I.  -I../bash -I../bash/include -I../bash/lib   -g -O2 -Wall
uname output: Linux ant 2.6.24.2 #2 Tue Apr 22 09:55:40 BST 2008 i686 GNU/Linux
Machine Type: i486-pc-linux-gnu

Bash Version: 3.2
Patch Level: 39
Release Status: release

Description:
        Hiya,

        is there a way to tell bash *not* to change the termios setting
        when using read -d when the fd is a terminal?

        I tried

        read -u0 -d x var # as in zsh's read -u0 -k 10
        read -u4 -d x var 4<&0

        to no avail.

        I think it's not that much of a useful feature given that it
        can be implemented more nicely (i.e. the user can still use
        backspace, <Ctrl-W>...) with "stty eol" and standard read or dd,
        so it would be nice to be able to disable it.

        I'm not saying "read -d" is not useful, just that one may not
        want the extra undocumented behavior for terminal fds.

Best regards,
Stephane