On 22 August 2017 at 10:47, Eliot Moss <m...@cs.umass.edu> wrote: > On 8/22/2017 10:31 AM, Stephen John Smoogen wrote: > >> I replicated this problem on my system and found that the fix is to add a >> >> shopt -s expand_aliases >> >> at the top of the script. I don't know why the option is turned off >> when running scripts versus in a plain script but that seems to be a >> default in Cygwin. > > > It's a *bash* default - it has nothing to do with Cygwin as distinct > from other bash installations. If you had a different experience > elsewhere, it could be that the default was overridden in some system > wide bashrc file - but that strikes me as unlikely. I suspect that > this is done as a security measure, to prevent an alias from introducing > a surprise. >
I checked on CentOS and there is no shopt option set in any of the /etc/ files. It must be a compiled in default of some sort as EL6 and EL7 both work without an explicit `shopt -s expand_aliases`. I then tried on an Ubuntu 16.04 system and it works without the `shopt -s expand_aliases` also. I didn't have access to anything else at the moment so I can't say which other systems might actually follow the default other than Cygwin at the moment. > Regards - EM > > > -- > Problem reports: http://cygwin.com/problems.html > FAQ: http://cygwin.com/faq/ > Documentation: http://cygwin.com/docs.html > Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple > -- Stephen J Smoogen. -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
