hlib gives "Illegal variable name" error

[aggibb]

Building Starlink on Ubuntu 12.04 (with tcsh as my shell) I ran into the above error, which comes from running hlib on the .hlp files. The tcsh man page says that the status check, $?, is a tcsh enhancement and is not in csh. The first line of hlib is:

#!/bin/csh -f

and if I change it to tcsh, hlib runs fine. Alternatively, changing $? to $status works. Any preferences for which change to implement? I'm not sure of the ubiquity of tcsh so perhaps the latter would be preferable?

What I find odd is that I've never run into this error before, even with a previous build on the same OS, and I've always used tcsh.

[timj]

If $status is portable then that's fine. csh must be an alias for tcsh on OS X then (and presumably the CentOS builds that Jenkins uses at JAC).

[aggibb]

The csh man page makes no mention of $? but does state that the status shell variable contains the exit status for the last command. I take this to mean that $status should be portable since the tcsh man page specifically lists $? is equivalent to $status.

[timj]

Patch at will.