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diff --git a/awklib/eg/lib/shellquote.awk b/awklib/eg/lib/shellquote.awk
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+# shell_quote --- quote an argument for passing to the shell
+#
+# Michael Brennan
+# brennan@madronabluff.com
+# September 2014
+
+function shell_quote(s, # parameter
+ SINGLE, QSINGLE, i, X, n, ret) # locals
+{
+ if (s == "")
+ return "\"\""
+
+ SINGLE = "\x27" # single quote
+ QSINGLE = "\"\x27\""
+ n = split(s, X, SINGLE)
+
+ ret = SINGLE X[1] SINGLE
+ for (i = 2; i <= n; i++)
+ ret = ret QSINGLE SINGLE X[i] SINGLE
+
+ return ret
+}