Configuration Information [Automatically generated, do not change]:
Machine: i686
OS: cygwin
Compiler: gcc
Compilation CFLAGS: -DPROGRAM='bash.exe' -DCONF_HOSTTYPE='i686'
-DCONF_OSTYPE='cygwin' -DCONF_MACHTYPE='i686-pc-cygwin' -DCONF_VENDOR='pc'
-DLOCALEDIR='/usr/share/locale' -DPACKAGE='bash' -DSHELL -DHAVE_CONFIG_H
-DRECYCLES_PIDS -I. -I/home/eblake/bash-3.2.15-13/src/bash-3.2
-I/home/eblake/bash-3.2.15-13/src/bash-3.2/include
-I/home/eblake/bash-3.2.15-13/src/bash-3.2/lib -O2 -pipe
uname output: CYGWIN_NT-5.1 nycutbalil 1.5.24(0.156/4/2) 2007-01-31 10:57 i686
Cygwin
Machine Type: i686-pc-cygwin
Bash Version: 3.2
Patch Level: 15
Release Status: release
Description:
Sometimes cd echos the new directory, sometimes it doesn't. This makes
picking up a new directory in an overridden cd function painful:
cd () {
local oldd=$(pwd)
local newd=$(command cd "$@" 2>/dev/null 1>&2 && pwd 2>/dev/null)
# echo oldd="<$oldd>"
# echo newd="<$newd>"
if [[ $newd == "" ]]; then
echo "cd $* failed" 1>&2
elif [[ $oldd == $newd ]]; then
echo "cd $* - no change" 1>&2
else
# do extra cd processing here
command cd "$@" 2>/dev/null 1>&2
# do extra cd processing here
fi
}
In the assignment of newd, curiously, we get either one line or two!
newd should be just the new directory (the result of running built-in
cd in a subshell) but since it sometimes outputs a result (which seems
to bypass the output redirection), newd may end up with two separate
directories in two lines.
It seems like this extra output only occurs when CDPATH is used for the
cd operation. Also, popd and pushd also have similarly inconvenient
outputs. None of this is documented in the manual, and there appear to
be no options at all to turn this superfluous output off.
Repeat-By:
Try the above function, with the commented lines uncommented. Use it
to change to a directory in the CDPATH. Check the newd=... output.
Fix:
Don't use CDPATH! But that's a shame...
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