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Use perl:

perl -e '$a=shift; `<< other code >>`; exit $a' $? # Fails in csh

Edit This works in csh, too (and zsh, tcsh, sh, pdksh - though not fish):

perl -e '$a=shift; `<< other code >>`; $a=~s/h// and exit $a; exit shift' "$?h" "$status"

Use perl:

perl -e '$a=shift; `<< other code >>`; exit $a' $? # Fails in csh

Edit This works in csh, too (and zsh, tcsh, sh, pdksh, ksh93 - though not fish):

perl -e '$a=shift; `<< other code >>`; $a=~s/h// and exit $a; exit shift' "$?h" "$status"

Use perl:

perl -e '$a=shift; `<< other code >>`; exit $a' $? # Fails in csh

Edit This works in csh, too:

perl -e '$a=shift; `<< other code >>`; $a=~s/h// and exit $a; exit shift' "$?h" "$status"

Use perl:

perl -e '$a=shift; `<< other code >>`; exit $a' $? # Fails in csh

Edit This works in csh, too (and zsh, tcsh, sh, pdksh - though not fish):

perl -e '$a=shift; `<< other code >>`; $a=~s/h// and exit $a; exit shift' "$?h" "$status"

Use perl:

perl -e '$a=shift; `<< other code >>`; exit $a' $? # Fails in csh

Edit This works in csh, too:

perl -e '$a=shift; `pwd`; $a=~s/h// and exit $a; exit shift' "$?h" "$status"

Use perl:

perl -e '$a=shift; `<< other code >>`; exit $a' $? # Fails in csh

Edit This works in csh, too:

perl -e '$a=shift; `<< other code >>`; $a=~s/h// and exit $a; exit shift' "$?h" "$status"