I would check what "open" program it is that eventually gets used on your system. I imagine whichever one it is is trying to make your life easier by changing its behavior when invoke interactively vs in a script.
once you find which one it is, you may be able to suppress that helpfulness. --Aaron On Nov 10, 2012, at 5:27 PM, Andy Fingerhut <andy.finger...@gmail.com> wrote: > There must be a difference between these other folks's environments and mine, > given the different behavior. > > What I find so odd is that it hangs when invoked via clojure.java.shell/sh > from within the REPL, but returns immediately with another prompt when run > from bash. I've even copied the xdg-open on the system exhibiting this > problem, because it is a shell script, and added debug statements to it to > print out environment variables. They are nearly identical when invoked from > bash vs. when invoked from in the REPL, except for the value of > LD_LIBRARY_PATH. I thought that might cause the different behavior, but > after tweaking things to make them the same I still saw the hang from the > REPL. > > I'll try creating another user on that system to see if it happens there, but > if most people don't see this behavior, that is a good thing for when/if the > patch for CLJ-896 is committed, which is the reason I was testing this and > finding the odd behavior. > > http://dev.clojure.org/jira/browse/CLJ-896 > > Thanks, > Andy > > On Nov 10, 2012, at 12:26 PM, Aaron Cohen wrote: > >> I'm pretty sure xdg-open ends up being a thin wrapper that delegates >> to your desktop environment's open program (gnome-open, kde-open, >> xce-open, etc) >> so probably that is where the difference lies. >> >> --Aaron >> >> On Nov 10, 2012, at 12:52 AM, Michael Gardner <gardne...@gmail.com> wrote: >> >>> I can't duplicate your results on my Debian wheezy box (Clojure 1.4, >>> openjdk 1.6.0_24, xdg-open 1.1.0 rc1); the call to (sh "xdg-open" …) >>> returns immediately. The only possibilities I can think of are that your >>> version of xdg-open blocks when run from a non-interactive shell, or that >>> your version of Java somehow handles subprocesses differently. >>> >>> The first possibility should be easy to test. And you should be able to >>> test the second by writing your own shell script that forks and then exits >>> (at least, I assume that's what xdg-open is doing). >>> >>> On Nov 9, 2012, at 19:26 , Andy Fingerhut <andy.finger...@gmail.com> wrote: >>> >>>> This issue may be specific to Linux, or even to a particular version of >>>> Linux that I am using (Ubuntu 11.10 32-bit desktop), although I doubt it >>>> is. If others try this out, I'd be curious to know what your results are, >>>> especially if you know why it is happening, and how it can be fixed. >>>> >>>> First, some behavior from a bash window on Ubuntu 11.10: >>>> >>>> % echo hi >>>> hi >>>> % xdg-open http://www.google.com >>>> % >>>> >>>> After pressing return for the xdg-open command above, my browser opens a >>>> tab to Google's home page. Back in the shell window, the next prompt >>>> appears immediately, even though the browser is still running and open to >>>> that page. That is what I expect to happen. >>>> >>>> However, if I do the following commands inside of a Clojure REPL (tested >>>> Clojure 1.4 and 1.5-beta1 so far): >>>> >>>> % rlwrap java -cp ~/lein/clojure-1.4.0/lib/clojure-1.4.0.jar clojure.main >>>> Clojure 1.4.0 >>>> user=> (require '[clojure.java.shell :as sh]) >>>> nil >>>> user=> (sh/sh "echo" "hi") >>>> {:exit 0, :out "hi\n", :err ""} >>>> user=> (sh/sh "xdg-open" "http://www.google.com";) >>>> >>>> The invocation of echo returns immediately, printing the result and the >>>> next REPL prompt. But when I invoke xdg-open, while the browser window >>>> appears and goes to the Google home page, back in the bash window I see no >>>> return value and no new REPL prompt. >>>> >>>> If I quit the browser, then back in the bash window I finally see the >>>> return value and a REPL prompt, as shown below: >>>> >>>> {:exit 0, :out "", :err ""} >>>> user=> >>>> >>>> >>>> What I'm wishing would happen is for the return value and REPL prompt to >>>> appear very soon after pressing return when invoking xdg-open with >>>> clojure.java.shell/sh. >>>> >>>> I added some debug print messages to a local copy of >>>> clojure.java.shell/sh, and it is stopping when waiting for the evaluation >>>> of either @out or @err in the final line of the function. >>>> >>>> If I do the same commands above on Mac OS X, with "open" instead of >>>> "xdg-open", it all works as I expect. >>>> >>>> Any clues? >>>> >>>> Thanks, >>>> Andy >>>> >>>> -- >>>> You received this message because you are subscribed to the Google >>>> Groups "Clojure" group. >>>> To post to this group, send email to clojure@googlegroups.com >>>> Note that posts from new members are moderated - please be patient with >>>> your first post. >>>> To unsubscribe from this group, send email to >>>> clojure+unsubscr...@googlegroups.com >>>> For more options, visit this group at >>>> http://groups.google.com/group/clojure?hl=en >>> >>> -- >>> You received this message because you are subscribed to the Google >>> Groups "Clojure" group. >>> To post to this group, send email to clojure@googlegroups.com >>> Note that posts from new members are moderated - please be patient with >>> your first post. >>> To unsubscribe from this group, send email to >>> clojure+unsubscr...@googlegroups.com >>> For more options, visit this group at >>> http://groups.google.com/group/clojure?hl=en >> >> -- >> You received this message because you are subscribed to the Google >> Groups "Clojure" group. >> To post to this group, send email to clojure@googlegroups.com >> Note that posts from new members are moderated - please be patient with your >> first post. >> To unsubscribe from this group, send email to >> clojure+unsubscr...@googlegroups.com >> For more options, visit this group at >> http://groups.google.com/group/clojure?hl=en > > -- > You received this message because you are subscribed to the Google > Groups "Clojure" group. > To post to this group, send email to clojure@googlegroups.com > Note that posts from new members are moderated - please be patient with your > first post. > To unsubscribe from this group, send email to > clojure+unsubscr...@googlegroups.com > For more options, visit this group at > http://groups.google.com/group/clojure?hl=en -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
