Re: [libvirt] [PATCH] Make virsh support '~' and '$HOME' in interactive mode

于 2013年03月21日 21:08, Eric Blake 写道: > On 03/21/2013 04:20 AM, Daniel P. Berrange wrote: > > In other words, if we're going to do this, go all the way and use > wordexp() to get shell-like expansion, instead of reinventing it > ourselves. Except that wordexp() is not portable to mingw, and not > provided in gnulib. > >> >> Also, we'll need a way to escape the special meaning of '~' >> and '$' to get them treated as literal characters instead of >> special characters. > > We already have the ability to quote characters, so that we can embed > spaces; our quoting rules are (intentionally) copied on shell rules, so > they would still work with a wordexp() approach. > This seems better than just expanding $HOME, i will try this wordexp(). One question, is variable can be accepted in the position of command and option? That is, is this form virsh # $VAR --$OPT=~/rpmbuild could be valid?