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Short explanation for & in key ! of dired

From: Daniel Clemente
Subject: Short explanation for & in key ! of dired
Date: Mon, 23 Jun 2008 10:13:37 +0200
User-agent: Gnus/5.11 (Gnus v5.11) Emacs/22.1 (gnu/linux)

  Hi, I think that in the docstring of method dired-do-shell-command (assigned 
to key !), it would be useful to add a paragraph like:

    Emacs will block until the program ends. To execute the command in the 
background, add `&' to the end of you string, as in `program * &'.

  For it's not completely obvious, and it's useful if you're opening graphical 
programs like xpdf, ooffice, a web browser, ...



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