It is a feature of *nix shells that an ending "&" in the command line will make the process forked. eg,
2!:1 '/Applications/TextEdit.app/Contents/MacOS/TextEdit &' Пнд, 09 Янв 2012, Ian Clark писал(а): > I try: > > 2!:1 '/Applications/Google\ Chrome.app/Contents/MacOS/Google\ Chrome' > > Chome starts up... the J session freezes. It only unfreezes when I quit > Chrome. > > This happens with all apps I can launch from the UNIX command line. Eg: > > 2!:1 '/Applications/TextEdit.app/Contents/MacOS/TextEdit' > > > > On Mon, Jan 9, 2012 at 2:43 AM, bill lam <bbill....@gmail.com> wrote: > > Try, eg, > > > > 2!:1 'firefox &' > > > > Пнд, 09 Янв 2012, Ian Clark писал(а): > >> AFAICS the purpose of 2!:1 (spawn) is to launch an asynchronous > >> process, eg a separate, parallel J session, and resume immediately it > >> is launched. Am I right? > >> > >> On my Mac it doesn't do that. (I can't establish what it does under > >> Windows because I don't have a Windows machine just now). > >> > >> Sure, it starts the specified process, but then the original J session > >> freezes solid until the spawned process terminates. This behavior is > >> no different from 2!:0 except to discard any returned value. > >> > >> Absence of this facility is preventing me from doing a lot of the > >> things I want to. In particular I can't play a sound without my app > >> hanging until the sound has finished playing. Nor can I write a server > >> in J and have it fire off a client. I have to launch the client > >> manually. > >> > >> Has nobody reported this behavior before? Any chance of getting it > >> fixed? Anyone know a workaround (such as a dll/dylib call)? > >> > >> JVERSION > >> Installer: j602a_mac_intel.dmg > >> Engine: j602/2008-03-03/16:45 > >> Library: 6.02.057 > >> > >> JVERSION > >> Engine: j701/2011-01-10/11:25 build: Feb 6 2011 16:16:29 > >> Library: 7.01.052 > >> Platform: Darwin 64 > >> Installer: j701a_mac64.dmg > >> > >> InstallPath: /Applications/j64-701 > >> ---------------------------------------------------------------------- > >> For information about J forums see http://www.jsoftware.com/forums.htm > > > > -- > > regards, > > ==================================================== > > GPG key 1024D/4434BAB3 2008-08-24 > > gpg --keyserver subkeys.pgp.net --recv-keys 4434BAB3 > > ---------------------------------------------------------------------- > > For information about J forums see http://www.jsoftware.com/forums.htm > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm -- regards, ==================================================== GPG key 1024D/4434BAB3 2008-08-24 gpg --keyserver subkeys.pgp.net --recv-keys 4434BAB3 ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
