#racket on 2020-02-27 — irc logs at freenode.irclog.whitequark.org

2020-02-20 18:27 samth changed the topic of #racket to: Racket v7.6 has been released: https://blog.racket-lang.org/2020/02/racket-v7-6.html -- Racket -- https://racket-lang.org -- https://pkgs.racket-lang.org -- Paste at http://pasterack.org

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14:35 <panico> Hello, I am trying to use subprocess to run dmenu and then write some new line separated strings to dmenu's std input (which is the output port returned from subprocess).

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14:40 <panico> Sorry, I will have to paste the code here as I am unable to get past the recaptcha on pasterack.org

14:40 <panico> (define-values (s o i e) (subprocess #f #f #f "dmenu" "-i -l 2"))

14:40 <panico> (write "Hello\nWorld" i)

14:40 <panico> (flush-output i)

14:41 <panico> The program does not error but dmenu never visually appears display Hello and World.

14:42 <panico> I am able to print out the subprocess pid, via (subprocess-pid s), and also when I print (subprocess-status s) I see "running".

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14:42 <panico> I don't need to read anything from the dmenu process, only write the strings to be displayed. The racket program can quit once the dmenu process has exited.

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15:19 <greghendershott> panico: I'm not sure but as a quick experiment what if you try one of the other, "simple" flavors: https://docs.racket-lang.org/reference/subprocess.html#%28part._.Simple_.Subprocesses%29

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17:07 <friscosam> panico: I don't think subprocess splits the arguments for you so dmenu is getting one argument with the value "-i -l 2"

17:10 <friscosam> panico: also I don't think subprocess uses the PATH environment variable to look for programs so you should either put the absolute path or use find-executable-path

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17:11 <friscosam> If you use the "simple" flavors as suggested you can avoid these problems as they work more like a command line string.

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