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Lisp programs sometimes need to run a shell and give it a command
that contains file names that were specified by the user. These
programs ought to be able to support any valid file name. But the shell
gives special treatment to certain characters, and if these characters
occur in the file name, they will confuse the shell. To handle these
characters, use the function
Precisely what this function does depends on your operating system. The function is designed to work with the syntax of your system's standard shell; if you use an unusual shell, you will need to redefine this function.
;; This example shows the behavior on GNU and Unix systems. (shell-quote-argument "foo > bar") => "foo\\ \\>\\ bar" ;; This example shows the behavior on MS-DOS and MS-Windows systems. (shell-quote-argument "foo > bar") => "\"foo > bar\""
Here's an example of using
shell-quote-argument to construct
a shell command:
(concat "diff -c " (shell-quote-argument oldfile) " " (shell-quote-argument newfile))
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